Class SpannerPostgreSQLDialect

java.lang.Object

org.hibernate.dialect.Dialect

org.hibernate.dialect.PostgreSQLDialect

org.hibernate.dialect.SpannerPostgreSQLDialect

All Implemented Interfaces:

FunctionContributor, TypeContributor, ConversionContext

public class SpannerPostgreSQLDialect
extends PostgreSQLDialect

Nested Class Summary

Nested classes/interfaces inherited from class Dialect

Dialect.SizeStrategy, Dialect.SizeStrategyImpl

Field Summary

Fields

Modifier and Type	Field	Description
protected static final DatabaseVersion	MINIMUM_POSTGRES_VERSION

Fields inherited from class PostgreSQLDialect

driverKind, MINIMUM_VERSION

Fields inherited from class Dialect

CLOSED_QUOTE, FALSE_STRING_VALUES, LEGACY_LOB_MERGE_STRATEGY, LOG_BASE2OF10, NEW_LOCATOR_LOB_MERGE_STRATEGY, QUOTE, STANDARD_MULTI_KEY_LOAD_SIZING_STRATEGY, STREAM_XFER_LOB_MERGE_STRATEGY, TRUE_STRING_VALUES

Constructor Summary

Constructors

Constructor	Description
SpannerPostgreSQLDialect()
SpannerPostgreSQLDialect(DatabaseVersion version)
SpannerPostgreSQLDialect(DialectResolutionInfo info)

Method Summary

Modifier and Type	Method	Description
boolean	addPartitionKeyToPrimaryKey()	Does this dialect require that the columns listed in partition by also occur in the primary key, when defining table partitioning?
void	appendDateTimeLiteral(SqlAppender appender, TemporalAccessor temporalAccessor, TemporalType precision, TimeZone jdbcTimeZone)	Append a datetime literal representing the given java.time value to the given SqlAppender.
void	appendDateTimeLiteral(SqlAppender appender, Calendar calendar, TemporalType precision, TimeZone jdbcTimeZone)	Append a datetime literal representing the given Calendar value to the given SqlAppender.
void	appendDateTimeLiteral(SqlAppender appender, Date date, TemporalType precision, TimeZone jdbcTimeZone)	Append a datetime literal representing the given Date value to the given SqlAppender.
SQLExceptionConversionDelegate	buildSQLExceptionConversionDelegate()	An instance of SQLExceptionConversionDelegate for interpreting dialect-specific error or SQLState codes.
boolean	canBatchTruncate()	Does the truncate table statement accept multiple tables?
String	castPattern(CastType from, CastType to)	Obtain a pattern for the SQL equivalent to a cast() function call.
protected String	castType(int sqlTypeCode)	The SQL type to use in cast( ... as ... ) expressions when casting to the target type represented by the given JDBC type code.
protected String	columnType(int sqlTypeCode)	The database column type name for a given JDBC type code defined in Types or SqlTypes.
protected void	contributePostgreSQLTypes(TypeContributions typeContributions, ServiceRegistry serviceRegistry)	Allow for extension points to override this only
void	contributeTypes(TypeContributions typeContributions, ServiceRegistry serviceRegistry)	A callback which allows the Dialect to contribute types.
MutationOperation	createOptionalTableUpdateOperation(EntityMutationTarget mutationTarget, org.hibernate.sql.model.internal.OptionalTableUpdate optionalTableUpdate, SessionFactoryImplementor factory)	Create a MutationOperation for a updating an optional table
String	currentLocalTime()	Translation of the HQL local_time function, which maps to the Java type LocalTime which is a time with no time zone.
String	currentLocalTimestamp()	Translation of the HQL local_datetime function, which maps to the Java type LocalDateTime which is a datetime with no time zone.
String	currentTime()	Translation of the HQL/JPQL current_time function, which maps to the Java type Time which is a time with no time zone.
String	currentTimestamp()	Translation of the HQL/JPQL current_timestamp function, which maps to the Java type Timestamp which is a datetime with no time zone.
Replacer	datetimeFormat(String format)
ScrollMode	defaultScrollMode()	A default ScrollMode to be used by Query.scroll().
String	getAddForeignKeyConstraintString(String constraintName, String[] foreignKey, String referencedTable, String[] primaryKey, boolean referencesPrimaryKey)	The syntax used to add a foreign key constraint to a table, with the referenced key columns explicitly specified.
AggregateSupport	getAggregateSupport()	How does this dialect support aggregate types like SqlTypes.STRUCT.
String	getArrayTypeName(String javaElementTypeName, String elementTypeName, Integer maxLength)	The SQL type name for the array type with elements of the given type name.
String	getBeforeDropStatement()	A command to execute before dropping tables.
CallableStatementSupport	getCallableStatementSupport()	The CallableStatementSupport for this database.
String	getCascadeConstraintsString()	The keyword that specifies that a drop table operation should be cascaded to its constraints, typically " cascade" where the leading space is required, or the empty string if there is no such keyword in this dialect.
String	getCheckCondition(String columnName, Long[] values)	Render a SQL check condition for a column that represents an enumerated value by its ordinal representation or a given list of values.
String	getCheckCondition(String columnName, String[] values)	Render a SQL check condition for a column that represents an enumerated value by its string representation or a given list of values (with NULL value allowed).
String	getCheckCondition(String columnName, Collection<?> valueSet, JdbcType jdbcType)	Generate a SQL check condition for the given column, constraining to the given values.
String	getCurrentSchemaCommand()	Get the SQL command used to retrieve the current schema name.
String	getDual()	Returns a table expression that has one row.
SqmMultiTableInsertStrategy	getFallbackSqmInsertStrategy(EntityMappingType rootEntityDescriptor, RuntimeModelCreationContext runtimeModelCreationContext)	The SqmMultiTableInsertStrategy to use when not specified by QueryEngineOptions.getCustomSqmMultiTableInsertStrategy().
SqmMultiTableMutationStrategy	getFallbackSqmMutationStrategy(EntityMappingType rootEntityDescriptor, RuntimeModelCreationContext runtimeModelCreationContext)	The SqmMultiTableMutationStrategy to use when not specified by QueryEngineOptions.getCustomSqmMultiTableMutationStrategy().
String	getForUpdateNowaitString()	Retrieves the FOR UPDATE NOWAIT syntax specific to this dialect.
String	getForUpdateNowaitString(String aliases)	Get the FOR UPDATE OF column_list NOWAIT fragment appropriate for this dialect, given the aliases of the columns to be write locked.
String	getForUpdateSkipLockedString()	Retrieves the FOR UPDATE SKIP LOCKED syntax specific to this dialect.
String	getForUpdateSkipLockedString(String aliases)	Get the FOR UPDATE OF column_list SKIP LOCKED fragment appropriate for this dialect, given the aliases of the columns to be write-locked.
String	getForUpdateString()	Get the string to append to SELECT statements to acquire pessimistic UPGRADE locks for this dialect.
String	getForUpdateString(String aliases)	Get the FOR UPDATE OF column_list fragment appropriate for this dialect, given the aliases of the columns that are to be write-locked.
String	getFromDualForSelectOnly()
FunctionalDependencyAnalysisSupport	getFunctionalDependencyAnalysisSupport()	Get this dialect's level of support for primary key functional dependency analysis within GROUP BY and ORDER BY clauses.
@Nullable TemporaryTableStrategy	getGlobalTemporaryTableStrategy()	The strategy to use for global temporary tables.
int	getInExpressionCountLimit()	Return the limit that the underlying database places on the number of elements in an IN predicate.
InformationExtractor	getInformationExtractor(ExtractionContext extractionContext)	A InformationExtractor which is able to extract table, primary key, foreign key, index information etc.
LimitHandler	getLimitHandler()	Obtain a LimitHandler that implements pagination support for Query.setMaxResults(int) and Query.setFirstResult(int).
TemporaryTableStrategy	getLocalTemporaryTableStrategy()	The strategy to use for local temporary tables.
LockingClauseStrategy	getLockingClauseStrategy(QuerySpec querySpec, LockOptions lockOptions)	Strategy for handling locking clause as part of SqlAstTranslator.
LockingSupport	getLockingSupport()	Access to various details and operations related to this Dialect's support for pessimistic locking.
int	getMaxVarbinaryLength()	The biggest size value that can be supplied as argument to a Types.VARBINARY-like type.
int	getMaxVarcharLength()	The biggest size value that can be supplied as argument to a Types.VARCHAR-like type.
TemporaryTableStrategy	getPersistentTemporaryTableStrategy()	The strategy to use for persistent temporary tables.
String	getReadLockString(int timeout)	Get the string to append to SELECT statements to acquire READ locks for this dialect.
String	getReadLockString(Timeout timeout)	Get the string to append to SELECT statements to acquire READ locks for this dialect.
String	getReadLockString(String aliases, int timeout)	Get the string to append to SELECT statements to acquire READ locks for this dialect, given the aliases of the columns to be read locked.
String	getReadLockString(String aliases, Timeout timeout)	Get the string to append to SELECT statements to acquire READ locks for this dialect, given the aliases of the columns to be read locked.
SequenceSupport	getSequenceSupport()	Get the appropriate SequenceSupport for this dialect.
SqlAstTranslatorFactory	getSqlAstTranslatorFactory()	Return a SqlAstTranslatorFactory specific to this dialect, or null to use the standard translator.
org.hibernate.tool.schema.internal.StandardTableExporter	getTableExporter()	Get an Exporter for Tables, usually StandardTableExporter.
String	getTruncateTableStatement(String tableName)	A SQL statement that truncates the given table.
UniqueDelegate	getUniqueDelegate()	Get the UniqueDelegate supported by this dialect
String	getWriteLockString(int timeout)	Get the string to append to SELECT statements to acquire pessimistic WRITE locks for this dialect.
String	getWriteLockString(Timeout timeout)	Get the string to append to SELECT statements to acquire pessimistic WRITE locks for this dialect.
String	getWriteLockString(String aliases, int timeout)	Get the string to append to SELECT statements to acquire WRITE locks for this dialect, given the aliases of the columns to be WRITE locked.
String	getWriteLockString(String aliases, Timeout timeout)	Get the string to append to SELECT statements to acquire WRITE locks for this dialect, given the aliases of the columns to be WRITE locked.
protected void	initDefaultProperties()	Set appropriate default values for configuration properties.
void	initializeFunctionRegistry(FunctionContributions functionContributions)	Initialize the given registry with any dialect-specific functions.
protected void	registerArrayFunctions(CommonFunctionFactory functionFactory)
protected void	registerJsonFunction(CommonFunctionFactory functionFactory)
protected void	registerPostgreSQLColumnTypes(TypeContributions typeContributions, ServiceRegistry serviceRegistry)
protected void	registerUtilityFunctions(FunctionContributions functionContributions)
protected void	registerXmlFunctions(CommonFunctionFactory functionFactory)
protected Integer	resolveSqlTypeCode(String columnTypeName, TypeConfiguration typeConfiguration)	Resolves the SqlTypes type code for the given column type name as reported by the database, or null if it can't be resolved.
String	rowId(String rowId)	The name of a rowid-like pseudo-column which acts as a high-performance row locator, or null if this dialect has no such pseudo-column.
boolean	supportsCaseInsensitiveLike()	Does this dialect support case-insensitive LIKE comparisons?
boolean	supportsCommentOn()	Does this dialect support commenting on tables and columns?
boolean	supportsCteHeaderColumnList()	Does this dialect support defining the column list in the CTE header?
boolean	supportsDistinctFromPredicate()	Does this dialect support some kind of distinct from predicate?
boolean	supportsFetchClause(FetchClauseType type)	Does this dialect support the given FETCH clause type.
boolean	supportsFilterClause()	Whether the FILTER clause for aggregate functions is supported.
boolean	supportsFromClauseInUpdate()	Does this dialect support the from clause for update statements?
boolean	supportsIfExistsAfterAlterTable()	For an alter table, can the phrase if exists be applied?
boolean	supportsIfExistsBeforeConstraintName()	For dropping a constraint with an alter table statement, can the phrase if exists be applied before the constraint name?
boolean	supportsLateral()	Does this dialect support the SQL lateral keyword or a proprietary alternative?
boolean	supportsNestedWithClause()	Whether the SQL with clause is supported within a CTE.
boolean	supportsPartitionBy()	Does is dialect support partition by in window functions?
boolean	supportsRecursiveCTE()	Does this dialect/database support recursive CTEs?
boolean	supportsRecursiveCycleUsingClause()	Whether the SQL cycle clause supports the using sub-clause.
boolean	supportsRecursiveSearchClause()	Whether the SQL search clause is supported, which can be used for recursive CTEs.
boolean	supportsRowConstructor()	Whether the SQL row constructor is supported.
boolean	supportsRowValueConstructorGtLtSyntax()	Is this dialect known to support what ANSI SQL calls the row value constructor syntax with the < >, <= and >= operators.
boolean	supportsRowValueConstructorSyntax()	Is this dialect known to support what ANSI SQL calls the row value constructor syntax, sometimes called "tuples".
boolean	supportsRowValueConstructorSyntaxInInSubQuery()	If the dialect supports row value constructors, does it allow them in IN subqueries?
boolean	supportsRowValueConstructorSyntaxInQuantifiedPredicates()	Is this dialect known to support what ANSI SQL calls the row value constructor syntax with quantified predicates.
boolean	supportsTupleCounts()	Does this dialect support count(a,b)?
boolean	supportsTupleDistinctCounts()	Does this dialect support count(distinct a,b)?
boolean	supportsUniqueConstraints()
boolean	supportsUserDefinedTypes()	Does the database support user-defined types?
boolean	supportsValuesList()	Does this dialect support values lists of form VALUES (1), (2), (3)?
boolean	supportsWindowFunctions()	Does this dialect support window functions like row_number() over (..)?
boolean	supportsWithClauseInSubquery()	Whether the SQL with clause is supported within a subquery.
String	timestampaddPattern(TemporalUnit unit, TemporalType temporalType, IntervalType intervalType)	Obtain a pattern for the SQL equivalent to a timestampadd() function call.
String	timestampdiffPattern(TemporalUnit unit, TemporalType fromTemporalType, TemporalType toTemporalType)	Obtain a pattern for the SQL equivalent to a timestampdiff() function call.
boolean	useIntegerForPrimaryKey()

Methods inherited from class PostgreSQLDialect

addSqlHintOrComment, appendBinaryLiteral, appendBooleanValueString, appendDatetimeFormat, augmentRecognizedTableTypes, buildIdentifierHelper, causesRollback, currentTimestampWithTimeZone, extractPattern, generatedAs, getAlterColumnTypeString, getCaseInsensitiveLike, getCreateEnumTypeCommand, getCurrentTimestampSelectString, getDefaultIntervalSecondScale, getDefaultNonContextualLobCreation, getDefaultOrdinalityColumnName, getDefaultStatementBatchSize, getDmlTargetColumnQualifierSupport, getDriverKind, getDropEnumTypeCommand, getEnumTypeDeclaration, getForUpdateString, getFractionalSecondPrecisionInNanos, getGroupBySelectItemReferenceStrategy, getIdentityColumnSupport, getMaxIdentifierLength, getMaxVarcharCapacity, getMinimumSupportedVersion, getNameQualifierSupport, getNationalizationSupport, getNativeParameterMarkerStrategy, getNativeValueGenerationStrategy, getNoColumnsInsertString, getQueryHintString, getQuerySequencesString, getResultSet, getResultSet, getResultSet, getSelectClauseNullString, getSelectClauseNullString, getTemporalTableSupport, getTimeZoneSupport, getViolatedConstraintNameExtractor, isCurrentTimestampSelectStringCallable, isCurrentTimestampStable, qualifyIndexName, quoteCollation, registerColumnTypes, registerResultSetOutParameter, requiresParensForTupleDistinctCounts, resolveSqlTypeDescriptor, rowIdSqlType, supportsAlterColumnType, supportsArrayConstructor, supportsBindingNullSqlTypeForSetNull, supportsConflictClauseForInsertCTE, supportsCurrentTimestampSelection, supportsIfExistsBeforeIndexName, supportsIfExistsBeforeTableName, supportsIfExistsBeforeTypeName, supportsInsertReturning, supportsIsTrue, supportsJdbcConnectionLobCreation, supportsLobValueChangePropagation, supportsMaterializedLobAccess, supportsMinMaxOnUuid, supportsNonQueryWithCTE, supportsNotNullAfterGeneratedAs, supportsOffsetInSubquery, supportsRecursiveCycleClause, supportsStandardArrays, supportsTemporalLiteralOffset, supportsUnboundedLobLocatorMaterialization, translateExtractField, useConnectionToCreateLob, useInputStreamToInsertBlob

Methods inherited from class Dialect

addUseIndexQueryHint, appendArrayLiteral, appendCheckConstraintOptions, appendIntervalLiteral, appendIntervalLiteral, appendLiteral, appendLockHint, appendUUIDLiteral, applyLocksToSql, augmentPhysicalTableTypes, buildLockingClauseStrategy, buildOptimisticForceIncrementStrategy, buildOptimisticStrategy, buildPessimisticForceIncrementStrategy, buildPessimisticReadStrategy, buildPessimisticWriteStrategy, buildReadStrategy, buildStringToBooleanCast, buildStringToBooleanCastDecode, buildStringToBooleanDecode, canCreateCatalog, canCreateSchema, canDisableConstraints, checkVersion, closeQuote, contribute, contributeFunctions, currentDate, determineDatabaseVersion, doesReadCommittedCauseWritersToBlockReaders, doesRepeatableReadCauseReadersToBlockWriters, doesRoundTemporalOnOverflow, dropConstraints, equivalentTypes, escapeComment, forceLobAsLastValue, getAddColumnString, getAddColumnSuffixString, getAddForeignKeyConstraintString, getAddPrimaryKeyConstraintString, getAlterTableString, getAuxiliaryDatabaseObjectExporter, getBatchLoadSizingStrategy, getCatalogSeparator, getCheckCondition, getCheckCondition, getCheckCondition, getCheckConstraintString, getColumnAliasExtractor, getColumnComment, getColumnDefaultString, getCreateCatalogCommand, getCreateEnumTypeCommand, getCreateIndexString, getCreateIndexTail, getCreateMultisetTableString, getCreateSchemaCommand, getCreateTableString, getCreateTemporaryTableColumnAnnotation, getCreateUserDefinedTypeExtensionsString, getCreateUserDefinedTypeKindString, getCrossReferenceParentTableFilter, getDefaultDecimalPrecision, getDefaultLobLength, getDefaultProperties, getDefaultTimestampPrecision, getDefaultUseGetGeneratedKeys, getDisableConstraintsStatement, getDisableConstraintStatement, getDoublePrecision, getDropCatalogCommand, getDropEnumTypeCommand, getDropForeignKeyString, getDropSchemaCommand, getDropTableString, getDropUniqueKeyString, getEnableConstraintsStatement, getEnableConstraintStatement, getEnumTypeDeclaration, getFallbackSchemaManagementTool, getFloatPrecision, getForeignKeyExporter, getForUpdateString, getForUpdateString, getForUpdateString, getForUpdateString, getForUpdateString, getHqlTranslator, getIndexExporter, getKeywords, getLobMergeStrategy, getLockingStrategy, getLockingStrategy, getLockRowIdentifier, getLowercaseFunction, getMaxAliasLength, getMaxNVarcharCapacity, getMaxNVarcharLength, getMaxVarbinaryCapacity, getMultiKeyLoadSizingStrategy, getNativeIdentifierGeneratorStrategy, getNullColumnString, getNullColumnString, getNullOrdering, getParameterCountLimit, getPessimisticLockStyle, getPreferredSqlTypeCodeForArray, getPreferredSqlTypeCodeForBoolean, getQueryHintString, getReadRowLockStrategy, getRowIdColumnString, getSchemaNameResolver, getSelectGUIDString, getSequenceExporter, getSequenceInformationExtractor, getSetOperatorSqlString, getSizeStrategy, getSqmTranslatorFactory, getSupportedTemporaryTableKind, getTableCleaner, getTableComment, getTableMigrator, getTableTypeString, getTemporaryTableAfterUseAction, getTemporaryTableBeforeUseAction, getTemporaryTableCreateCommand, getTemporaryTableCreateOptions, getTemporaryTableDdlTransactionHandling, getTemporaryTableDropCommand, getTemporaryTableExporter, getTemporaryTableTruncateCommand, getTimeoutInSeconds, getTruncateTableStatements, getUniqueKeyExporter, getUserDefinedTypeExporter, getVersion, getWriteRowLockStrategy, hasAlterTable, hasDataTypeBeforeGeneratedAs, hasSelfReferentialForeignKeyBug, isEmptyStringTreatedAsNull, isJdbcLogWarningsEnabledByDefault, isLob, narrowCastType, openQuote, ordinal, prependComment, quote, registerDefaultKeywords, registerKeyword, registerKeywords, registerResultSetOutParameter, requiresCastForConcatenatingNonStrings, requiresColumnListInCreateView, requiresFloatCastingOfIntegerDivision, requiresNotNullBeforeDefault, requiresParensForTupleCounts, resolveSqlTypeCode, resolveSqlTypeLength, stripsTrailingSpacesFromChar, supportsBatchUpdates, supportsBindAsCallableArgument, supportsBindingNullForSetObject, supportsBitType, supportsCascadeDelete, supportsCircularCascadeDeleteConstraints, supportsColumnCheck, supportsCrossJoin, supportsDuplicateSelectItemsInQueryGroup, supportsExceptAll, supportsExistsInSelect, supportsExpectedLobUsagePattern, supportsForUpdate, supportsFractionalTimestampArithmetic, supportsIfExistsAfterConstraintName, supportsIfExistsAfterTableName, supportsIfExistsAfterTypeName, supportsInsertReturningGeneratedKeys, supportsInsertReturningRowId, supportsIntersect, supportsJoinInMutationStatementSubquery, supportsJoinsInDelete, supportsLockTimeouts, supportsNamedColumnCheck, supportsNamedParameters, supportsNationalizedMethods, supportsNestedSubqueryCorrelation, supportsNoColumnsInsert, supportsNoWait, supportsNullPrecedence, supportsOrderByInSubquery, supportsOrdinalSelectItemReference, supportsOuterJoinForUpdate, supportsPredicateAsExpression, supportsRefCursors, supportsResultSetPositionQueryMethodsOnForwardOnlyCursor, supportsRowValueConstructorDistinctFromSyntax, supportsRowValueConstructorSyntaxInInList, supportsSimpleQueryGrouping, supportsSkipLocked, supportsStandardCurrentTimestampFunction, supportsSubqueryInSelect, supportsSubqueryOnMutatingTable, supportsSubselectAsInPredicateLHS, supportsTableCheck, supportsTableOptions, supportsTemporaryTablePrimaryKey, supportsTemporaryTables, supportsTruncateWithCast, supportsUnionAll, supportsUnionInSubquery, supportsUpdateReturning, supportsValuesListForInsert, supportsWait, supportsWithClause, throttleDdl, toBooleanValueString, toQuotedIdentifier, toString, transformSelectString, translateDurationField, trimPattern, unquoteGetGeneratedKeys, useArrayForMultiValuedParameters, useCrossReferenceForeignKeys, useFollowOnLocking, useMaterializedLobWhenCapacityExceeded

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

MINIMUM_POSTGRES_VERSION

protected static final DatabaseVersion MINIMUM_POSTGRES_VERSION

Constructor Details

SpannerPostgreSQLDialect

public SpannerPostgreSQLDialect()

SpannerPostgreSQLDialect

public SpannerPostgreSQLDialect(DialectResolutionInfo info)

SpannerPostgreSQLDialect

public SpannerPostgreSQLDialect(DatabaseVersion version)

Method Details

initializeFunctionRegistry

public void initializeFunctionRegistry(FunctionContributions functionContributions)

Description copied from class: Dialect

Initialize the given registry with any dialect-specific functions.

Support for certain SQL functions is required, and if the database does not support a required function, then the dialect must define a way to emulate it.

These required functions include the functions defined by the JPA query language specification:

• avg(arg) - aggregate function
• count([distinct ]arg) - aggregate function
• max(arg) - aggregate function
• min(arg) - aggregate function
• sum(arg) - aggregate function

• coalesce(arg0, arg1, ...)
• nullif(arg0, arg1)

• lower(arg)
• upper(arg)
• length(arg)
• concat(arg0, arg1, ...)
• locate(pattern, string[, start])
• substring(string, start[, length])
• trim([[spec ][character ]from] string)

• abs(arg)
• mod(arg0, arg1)
• sqrt(arg)

• current date
• current time
• current timestamp

Along with an additional set of functions defined by ANSI SQL:

• any(arg) - aggregate function
• every(arg) - aggregate function

• var_samp(arg) - aggregate function
• var_pop(arg) - aggregate function
• stddev_samp(arg) - aggregate function
• stddev_pop(arg) - aggregate function

• cast(arg as Type)
• extract(field from arg)

• ln(arg)
• exp(arg)
• power(arg0, arg1)
• floor(arg)
• ceiling(arg)

• position(pattern in string)
• substring(string from start[ for length])
• overlay(string placing replacement from start[ for length])

And the following functions for working with java.time types:

• local date
• local time
• local datetime
• offset datetime
• instant

And a number of additional "standard" functions:

• left(string, length)
• right(string, length)
• replace(string, pattern, replacement)
• pad(string with length spec[ character])
• repeat(string, times)

• pi
• log10(arg)
• log(base, arg)
• sign(arg)
• sin(arg)
• cos(arg)
• tan(arg)
• asin(arg)
• acos(arg)
• atan(arg)
• atan2(arg0, arg1)
• round(arg0[, arg1])
• truncate(arg0[, arg1])
• sinh(arg)
• tanh(arg)
• cosh(arg)
• least(arg0, arg1, ...)
• greatest(arg0, arg1, ...)
• degrees(arg)
• radians(arg)
• bitand(arg1, arg1)
• bitor(arg1, arg1)
• bitxor(arg1, arg1)

• format(datetime as pattern)
• collate(string as collation)
• str(arg) - synonym of cast(a as String)
• ifnull(arg0, arg1) - synonym of coalesce(a, b)

• ordinal(arg)
• string(arg)

Finally, the following functions are defined as abbreviations for extract(), and desugared by the parser:

• second(arg) - synonym of extract(second from a)
• minute(arg) - synonym of extract(minute from a)
• hour(arg) - synonym of extract(hour from a)
• day(arg) - synonym of extract(day from a)
• month(arg) - synonym of extract(month from a)
• year(arg) - synonym of extract(year from a)

Note that according to this definition, the second() function returns a floating point value, contrary to the integer type returned by the native function with this name on many databases. Thus, we don't just naively map these HQL functions to the native SQL functions with the same names.

Overrides:

initializeFunctionRegistry in class PostgreSQLDialect

registerJsonFunction

protected void registerJsonFunction(CommonFunctionFactory functionFactory)

Overrides:

registerJsonFunction in class PostgreSQLDialect

registerArrayFunctions

protected void registerArrayFunctions(CommonFunctionFactory functionFactory)

Overrides:

registerArrayFunctions in class PostgreSQLDialect

registerXmlFunctions

protected void registerXmlFunctions(CommonFunctionFactory functionFactory)

Overrides:

registerXmlFunctions in class PostgreSQLDialect

registerUtilityFunctions

protected void registerUtilityFunctions(FunctionContributions functionContributions)

Overrides:

registerUtilityFunctions in class PostgreSQLDialect

initDefaultProperties

protected void initDefaultProperties()

Description copied from class: Dialect

Set appropriate default values for configuration properties.

This default implementation sets "hibernate.jdbc.batch_size", "hibernate.jdbc.lob.non_contextual_creation", and "hibernate.jdbc.use_get_generated_keys" to defaults determined by calling Dialect.getDefaultStatementBatchSize(), Dialect.getDefaultNonContextualLobCreation(), and Dialect.getDefaultUseGetGeneratedKeys().

An implementation may set additional configuration properties, but this is discouraged.

Overrides:

initDefaultProperties in class Dialect

getArrayTypeName

public String getArrayTypeName(String javaElementTypeName,
 String elementTypeName,
 Integer maxLength)

Description copied from class: Dialect

The SQL type name for the array type with elements of the given type name.

The ANSI-standard syntax is integer array.

Overrides:

getArrayTypeName in class Dialect

getTableExporter

public org.hibernate.tool.schema.internal.StandardTableExporter getTableExporter()

Description copied from class: Dialect

Get an Exporter for Tables, usually StandardTableExporter.

Overrides:

getTableExporter in class PostgreSQLDialect

getUniqueDelegate

public UniqueDelegate getUniqueDelegate()

Description copied from class: Dialect

Get the UniqueDelegate supported by this dialect

Overrides:

getUniqueDelegate in class PostgreSQLDialect

Returns:

The UniqueDelegate

getSequenceSupport

public SequenceSupport getSequenceSupport()

Description copied from class: Dialect

Get the appropriate SequenceSupport for this dialect.

Overrides:

getSequenceSupport in class PostgreSQLDialect

getLimitHandler

public LimitHandler getLimitHandler()

Description copied from class: Dialect

Obtain a LimitHandler that implements pagination support for Query.setMaxResults(int) and Query.setFirstResult(int).

Overrides:

getLimitHandler in class PostgreSQLDialect

getCheckCondition

public String getCheckCondition(String columnName,
 String[] values)

Description copied from class: Dialect

Render a SQL check condition for a column that represents an enumerated value by its string representation or a given list of values (with NULL value allowed).

Overrides:

getCheckCondition in class Dialect

Returns:

a SQL expression that will occur in a check constraint

getCheckCondition

public String getCheckCondition(String columnName,
 Long[] values)

Description copied from class: Dialect

Render a SQL check condition for a column that represents an enumerated value by its ordinal representation or a given list of values.

Overrides:

getCheckCondition in class Dialect

Returns:

a SQL expression that will occur in a check constraint

getCheckCondition

public String getCheckCondition(String columnName,
 Collection<?> valueSet,
 JdbcType jdbcType)

Description copied from class: Dialect

Generate a SQL check condition for the given column, constraining to the given values.

Overrides:

getCheckCondition in class Dialect

Returns:

a SQL expression that will occur in a check constraint

getAggregateSupport

public AggregateSupport getAggregateSupport()

Description copied from class: Dialect

How does this dialect support aggregate types like SqlTypes.STRUCT.

Overrides:

getAggregateSupport in class PostgreSQLDialect

getLockingSupport

public LockingSupport getLockingSupport()

Description copied from class: Dialect

Access to various details and operations related to this Dialect's support for pessimistic locking.

Overrides:

getLockingSupport in class PostgreSQLDialect

resolveSqlTypeCode

protected Integer resolveSqlTypeCode(String columnTypeName,
 TypeConfiguration typeConfiguration)

Description copied from class: Dialect

Resolves the SqlTypes type code for the given column type name as reported by the database, or null if it can't be resolved.

Overrides:

resolveSqlTypeCode in class PostgreSQLDialect

supportsFetchClause

public boolean supportsFetchClause(FetchClauseType type)

Description copied from class: Dialect

Does this dialect support the given FETCH clause type.

Overrides:

supportsFetchClause in class PostgreSQLDialect

Parameters:

type - The fetch clause type

Returns:

true if the underlying database supports the given fetch clause type, false otherwise. The default is false.

getForUpdateString

public String getForUpdateString()

Description copied from class: Dialect

Get the string to append to SELECT statements to acquire pessimistic UPGRADE locks for this dialect.

Overrides:

getForUpdateString in class PostgreSQLDialect

Returns:

The appropriate FOR UPDATE clause string.

getForUpdateString

public String getForUpdateString(String aliases)

Description copied from class: Dialect

Get the FOR UPDATE OF column_list fragment appropriate for this dialect, given the aliases of the columns that are to be write-locked.

Overrides:

getForUpdateString in class PostgreSQLDialect

Parameters:

aliases - The columns to be write-locked.

Returns:

The appropriate FOR UPDATE OF column_list clause string.

getWriteLockString

public String getWriteLockString(int timeout)

Description copied from class: Dialect

Get the string to append to SELECT statements to acquire pessimistic WRITE locks for this dialect.

Location of the returned string is treated the same as Dialect.getForUpdateString().

Overrides:

getWriteLockString in class PostgreSQLDialect

Parameters:

timeout - How long, in milliseconds, the database should wait to acquire the lock. See Timeouts for some "magic values".

Returns:

The appropriate LOCK clause string.

getWriteLockString

public String getWriteLockString(String aliases,
 int timeout)

Description copied from class: Dialect

Get the string to append to SELECT statements to acquire WRITE locks for this dialect, given the aliases of the columns to be WRITE locked.

Location of the returned string is treated the same as Dialect.getForUpdateString().

Overrides:

getWriteLockString in class PostgreSQLDialect

Parameters:

aliases - The columns to be read locked.

timeout - How long, in milliseconds, the database should wait to acquire the lock. See Timeouts for some "magic values".

Returns:

The appropriate LOCK clause string.

getWriteLockString

public String getWriteLockString(Timeout timeout)

Description copied from class: Dialect

Get the string to append to SELECT statements to acquire pessimistic WRITE locks for this dialect.

Overrides:

getWriteLockString in class PostgreSQLDialect

Parameters:

timeout - How long the database should wait to acquire the lock. See Timeouts for some "magic values".

Returns:

The appropriate lock clause.

getWriteLockString

public String getWriteLockString(String aliases,
 Timeout timeout)

Description copied from class: Dialect

Get the string to append to SELECT statements to acquire WRITE locks for this dialect, given the aliases of the columns to be WRITE locked. * * @param timeout How long the database should wait to acquire the lock.

Location of the returned string is treated the same as Dialect.getForUpdateString().

Overrides:

getWriteLockString in class PostgreSQLDialect

Parameters:

aliases - The columns to be read locked.

timeout - How long the database should wait to acquire the lock. See Timeouts for some "magic values".

Returns:

The appropriate LOCK clause string.

getReadLockString

public String getReadLockString(int timeout)

Description copied from class: Dialect

Get the string to append to SELECT statements to acquire READ locks for this dialect.

Location of the returned string is treated the same as Dialect.getForUpdateString().

Overrides:

getReadLockString in class PostgreSQLDialect

Parameters:

timeout - in milliseconds, -1 for indefinite wait and 0 for no wait.

Returns:

The appropriate LOCK clause string.

getReadLockString

public String getReadLockString(Timeout timeout)

Description copied from class: Dialect

Get the string to append to SELECT statements to acquire READ locks for this dialect.

Overrides:

getReadLockString in class PostgreSQLDialect

Parameters:

timeout - How long the database should wait to acquire the lock. See Timeouts for some "magic values".

Returns:

The appropriate LOCK clause string.

getReadLockString

public String getReadLockString(String aliases,
 Timeout timeout)

Description copied from class: Dialect

Get the string to append to SELECT statements to acquire READ locks for this dialect, given the aliases of the columns to be read locked.

Overrides:

getReadLockString in class PostgreSQLDialect

Parameters:

aliases - The columns to be read locked.

timeout - How long the database should wait to acquire the lock. See Timeouts for some "magic values".

Returns:

The appropriate LOCK clause string.

getReadLockString

public String getReadLockString(String aliases,
 int timeout)

Description copied from class: Dialect

Get the string to append to SELECT statements to acquire READ locks for this dialect, given the aliases of the columns to be read locked.

Location of the returned string is treated the same as Dialect.getForUpdateString().

Overrides:

getReadLockString in class PostgreSQLDialect

Parameters:

aliases - The columns to be read locked.

timeout - in milliseconds, -1 for indefinite wait and 0 for no wait.

Returns:

The appropriate LOCK clause string.

getForUpdateNowaitString

public String getForUpdateNowaitString()

Description copied from class: Dialect

Retrieves the FOR UPDATE NOWAIT syntax specific to this dialect.

Overrides:

getForUpdateNowaitString in class PostgreSQLDialect

Returns:

The appropriate FOR UPDATE NOWAIT clause string.

getForUpdateNowaitString

public String getForUpdateNowaitString(String aliases)

Description copied from class: Dialect

Get the FOR UPDATE OF column_list NOWAIT fragment appropriate for this dialect, given the aliases of the columns to be write locked.

Overrides:

getForUpdateNowaitString in class PostgreSQLDialect

Parameters:

aliases - The columns to be write locked.

Returns:

The appropriate FOR UPDATE OF colunm_list NOWAIT clause string.

getForUpdateSkipLockedString

public String getForUpdateSkipLockedString()

Description copied from class: Dialect

Retrieves the FOR UPDATE SKIP LOCKED syntax specific to this dialect.

Overrides:

getForUpdateSkipLockedString in class PostgreSQLDialect

Returns:

The appropriate FOR UPDATE SKIP LOCKED clause string.

getForUpdateSkipLockedString

public String getForUpdateSkipLockedString(String aliases)

Description copied from class: Dialect

Get the FOR UPDATE OF column_list SKIP LOCKED fragment appropriate for this dialect, given the aliases of the columns to be write-locked.

Overrides:

getForUpdateSkipLockedString in class PostgreSQLDialect

Parameters:

aliases - The columns to be write-locked.

Returns:

The appropriate FOR UPDATE colunm_list SKIP LOCKED clause string.

getLockingClauseStrategy

public LockingClauseStrategy getLockingClauseStrategy(QuerySpec querySpec,
 LockOptions lockOptions)

Description copied from class: Dialect

Strategy for handling locking clause as part of SqlAstTranslator.

Overrides:

getLockingClauseStrategy in class Dialect

contributeTypes

public void contributeTypes(TypeContributions typeContributions,
 ServiceRegistry serviceRegistry)

Description copied from class: Dialect

A callback which allows the Dialect to contribute types.

Overrides:

contributeTypes in class PostgreSQLDialect

Parameters:

typeContributions - Callback to contribute the types

serviceRegistry - The service registry

getFunctionalDependencyAnalysisSupport

public FunctionalDependencyAnalysisSupport getFunctionalDependencyAnalysisSupport()

Description copied from class: Dialect

Get this dialect's level of support for primary key functional dependency analysis within GROUP BY and ORDER BY clauses.

Overrides:

getFunctionalDependencyAnalysisSupport in class PostgreSQLDialect

contributePostgreSQLTypes

protected void contributePostgreSQLTypes(TypeContributions typeContributions,
 ServiceRegistry serviceRegistry)

Description copied from class: PostgreSQLDialect

Allow for extension points to override this only

Overrides:

contributePostgreSQLTypes in class PostgreSQLDialect

getSqlAstTranslatorFactory

public SqlAstTranslatorFactory getSqlAstTranslatorFactory()

Description copied from class: Dialect

Return a SqlAstTranslatorFactory specific to this dialect, or null to use the standard translator.

Overrides:

getSqlAstTranslatorFactory in class PostgreSQLDialect

See Also:

• StandardSqlAstTranslatorFactory
• JdbcEnvironment.getSqlAstTranslatorFactory()

registerPostgreSQLColumnTypes

protected void registerPostgreSQLColumnTypes(TypeContributions typeContributions,
 ServiceRegistry serviceRegistry)

Overrides:

registerPostgreSQLColumnTypes in class PostgreSQLDialect

appendDateTimeLiteral

public void appendDateTimeLiteral(SqlAppender appender,
 TemporalAccessor temporalAccessor,
 TemporalType precision,
 TimeZone jdbcTimeZone)

Description copied from class: Dialect

Append a datetime literal representing the given java.time value to the given SqlAppender.

Overrides:

appendDateTimeLiteral in class PostgreSQLDialect

appendDateTimeLiteral

public void appendDateTimeLiteral(SqlAppender appender,
 Date date,
 TemporalType precision,
 TimeZone jdbcTimeZone)

Description copied from class: Dialect

Append a datetime literal representing the given Date value to the given SqlAppender.

Overrides:

appendDateTimeLiteral in class PostgreSQLDialect

appendDateTimeLiteral

public void appendDateTimeLiteral(SqlAppender appender,
 Calendar calendar,
 TemporalType precision,
 TimeZone jdbcTimeZone)

Description copied from class: Dialect

Append a datetime literal representing the given Calendar value to the given SqlAppender.

Overrides:

appendDateTimeLiteral in class PostgreSQLDialect

castType

protected String castType(int sqlTypeCode)

Description copied from class: Dialect

The SQL type to use in cast( ... as ... ) expressions when casting to the target type represented by the given JDBC type code.

Overrides:

castType in class PostgreSQLDialect

Parameters:

sqlTypeCode - The JDBC type code representing the target type

Returns:

The SQL type to use in cast()

timestampaddPattern

public String timestampaddPattern(TemporalUnit unit,
 TemporalType temporalType,
 IntervalType intervalType)

Description copied from class: Dialect

Obtain a pattern for the SQL equivalent to a timestampadd() function call. The resulting pattern must contain ?1, ?2, and ?3 placeholders for the arguments.

Overrides:

timestampaddPattern in class PostgreSQLDialect

Parameters:

unit - The unit to add to the temporal

temporalType - The type of the temporal

intervalType - The type of interval to add or null if it's not a native interval

timestampdiffPattern

public String timestampdiffPattern(TemporalUnit unit,
 TemporalType fromTemporalType,
 TemporalType toTemporalType)

Description copied from class: Dialect

Obtain a pattern for the SQL equivalent to a timestampdiff() function call. The resulting pattern must contain ?1, ?2, and ?3 placeholders for the arguments.

Overrides:

timestampdiffPattern in class PostgreSQLDialect

Parameters:

unit - the first argument

fromTemporalType - true if the first argument is a timestamp, false if a date

toTemporalType - true if the second argument is

castPattern

public String castPattern(CastType from,
 CastType to)

Description copied from class: Dialect

Obtain a pattern for the SQL equivalent to a cast() function call. The resulting pattern must contain ?1 and ?2 placeholders for the arguments.

Overrides:

castPattern in class PostgreSQLDialect

Parameters:

from - a CastType indicating the type of the value argument

to - a CastType indicating the type the value argument is cast to

columnType

protected String columnType(int sqlTypeCode)

Description copied from class: Dialect

The database column type name for a given JDBC type code defined in Types or SqlTypes. This default implementation returns the ANSI-standard type name.

This method may be overridden by concrete Dialects as an alternative to Dialect.registerColumnTypes(TypeContributions, ServiceRegistry) for simple registrations.

Note that:

1. Implementations of this method are expected to define a sensible mapping forTypes.NCLOB Types.NCHAR, and Types.NVARCHAR. On some database, these types are simply remapped to CLOB, CHAR, and VARCHAR.
2. Mappings for Types.TIMESTAMP and Types.TIMESTAMP_WITH_TIMEZONE should support explicit specification of precision if possible.
3. As specified by DdlTypeRegistry.getDescriptor(int), this method never receives Types.LONGVARCHAR, Types.LONGNVARCHAR, nor Types.LONGVARBINARY, which are considered synonyms for their non-LONG counterparts.
4. On the other hand, the types SqlTypes.LONG32VARCHAR, SqlTypes.LONG32NVARCHAR, and SqlTypes.LONG32VARBINARY are not synonyms, and implementations of this method must define sensible mappings, for example to database-native TEXT or CLOB types.

Overrides:

columnType in class PostgreSQLDialect

Parameters:

sqlTypeCode - a SQL type code

Returns:

a column type name, with $l, $p, $s placeholders for length, precision, scale

See Also:

• SqlTypes

defaultScrollMode

public ScrollMode defaultScrollMode()

Description copied from class: Dialect

A default ScrollMode to be used by Query.scroll().

Overrides:

defaultScrollMode in class Dialect

Returns:

the default ScrollMode to use.

supportsTupleCounts

public boolean supportsTupleCounts()

Description copied from class: Dialect

Does this dialect support count(a,b)?

Overrides:

supportsTupleCounts in class PostgreSQLDialect

Returns:

True if the database supports counting tuples; false otherwise.

supportsUserDefinedTypes

public boolean supportsUserDefinedTypes()

Description copied from class: Dialect

Does the database support user-defined types?

Overrides:

supportsUserDefinedTypes in class PostgreSQLDialect

See Also:

• Struct

supportsFilterClause

public boolean supportsFilterClause()

Description copied from class: Dialect

Whether the FILTER clause for aggregate functions is supported.

Overrides:

supportsFilterClause in class PostgreSQLDialect

supportsRecursiveCycleUsingClause

public boolean supportsRecursiveCycleUsingClause()

Description copied from class: Dialect

Whether the SQL cycle clause supports the using sub-clause.

Overrides:

supportsRecursiveCycleUsingClause in class PostgreSQLDialect

supportsRecursiveSearchClause

public boolean supportsRecursiveSearchClause()

Description copied from class: Dialect

Whether the SQL search clause is supported, which can be used for recursive CTEs.

Overrides:

supportsRecursiveSearchClause in class PostgreSQLDialect

supportsUniqueConstraints

public boolean supportsUniqueConstraints()

Overrides:

supportsUniqueConstraints in class Dialect

Returns:

True if database supports UNIQUE constraint definitions in the create table and alter table statements. If this is not supported, then Hibernate will create a unique index instead.

supportsRowValueConstructorGtLtSyntax

public boolean supportsRowValueConstructorGtLtSyntax()

Description copied from class: Dialect

Is this dialect known to support what ANSI SQL calls the row value constructor syntax with the < >, <= and >= operators.

That is, does it support comparisons like:

(FIRST_NAME, LAST_NAME) < ('Steve', 'Ebersole')

Overrides:

supportsRowValueConstructorGtLtSyntax in class Dialect

Returns:

True if this SQL dialect is known to support the use of row value constructors as operands of relational comparison operators; false otherwise.

supportsRowValueConstructorSyntax

public boolean supportsRowValueConstructorSyntax()

Description copied from class: Dialect

Is this dialect known to support what ANSI SQL calls the row value constructor syntax, sometimes called "tuples".

That is, does it support comparisons like:

(FIRST_NAME, LAST_NAME) = ('Steve', 'Ebersole')

Overrides:

supportsRowValueConstructorSyntax in class Dialect

Returns:

True if this SQL dialect is known to support the use of row value constructors as operands of the equality operator; false otherwise.

supportsRowValueConstructorSyntaxInQuantifiedPredicates

public boolean supportsRowValueConstructorSyntaxInQuantifiedPredicates()

Description copied from class: Dialect

Is this dialect known to support what ANSI SQL calls the row value constructor syntax with quantified predicates.

That is, does it support comparisons like:

(FIRST_NAME, LAST_NAME) = ALL (select ...)

Overrides:

supportsRowValueConstructorSyntaxInQuantifiedPredicates in class Dialect

Returns:

True if this SQL dialect is known to support the use of row value constructors as operands with quantified predicates; false otherwise.

supportsValuesList

public boolean supportsValuesList()

Description copied from class: Dialect

Does this dialect support values lists of form VALUES (1), (2), (3)?

Overrides:

supportsValuesList in class PostgreSQLDialect

Returns:

true if values list are supported

supportsRowValueConstructorSyntaxInInSubQuery

public boolean supportsRowValueConstructorSyntaxInInSubQuery()

Description copied from class: Dialect

If the dialect supports row value constructors, does it allow them in IN subqueries?

For example:

(FIRST_NAME, LAST_NAME) IN (SELECT ... )

Overrides:

supportsRowValueConstructorSyntaxInInSubQuery in class Dialect

Returns:

True if this SQL dialect is known to support the use of row value constructors in IN subqueries; false otherwise.

supportsCaseInsensitiveLike

public boolean supportsCaseInsensitiveLike()

Description copied from class: Dialect

Does this dialect support case-insensitive LIKE comparisons?

Overrides:

supportsCaseInsensitiveLike in class PostgreSQLDialect

Returns:

true if the database supports case-insensitive like comparisons, false otherwise. The default is false.

currentTimestamp

public String currentTimestamp()

Description copied from class: Dialect

Translation of the HQL/JPQL current_timestamp function, which maps to the Java type Timestamp which is a datetime with no time zone. This contradicts ANSI SQL where current_timestamp has the type TIMESTAMP WITH TIME ZONE.

It is recommended to override this in dialects for databases which support localtimestamp or timestamp at local.

Overrides:

currentTimestamp in class PostgreSQLDialect

currentTime

public String currentTime()

Description copied from class: Dialect

Translation of the HQL/JPQL current_time function, which maps to the Java type Time which is a time with no time zone. This contradicts ANSI SQL where current_time has the type TIME WITH TIME ZONE.

It is recommended to override this in dialects for databases which support localtime or time at local.

Overrides:

currentTime in class PostgreSQLDialect

currentLocalTimestamp

public String currentLocalTimestamp()

Description copied from class: Dialect

Translation of the HQL local_datetime function, which maps to the Java type LocalDateTime which is a datetime with no time zone. It should usually be the same SQL function as for Dialect.currentTimestamp().

It is recommended to override this in dialects for databases which support localtimestamp or current_timestamp at local.

Overrides:

currentLocalTimestamp in class Dialect

currentLocalTime

public String currentLocalTime()

Description copied from class: Dialect

Translation of the HQL local_time function, which maps to the Java type LocalTime which is a time with no time zone. It should usually be the same SQL function as for Dialect.currentTime().

It is recommended to override this in dialects for databases which support localtime or current_time at local.

Overrides:

currentLocalTime in class Dialect

supportsLateral

public boolean supportsLateral()

Description copied from class: Dialect

Does this dialect support the SQL lateral keyword or a proprietary alternative?

Overrides:

supportsLateral in class PostgreSQLDialect

Returns:

true if the underlying database supports lateral, false otherwise. The default is false.

supportsFromClauseInUpdate

public boolean supportsFromClauseInUpdate()

Description copied from class: Dialect

Does this dialect support the from clause for update statements?

Overrides:

supportsFromClauseInUpdate in class PostgreSQLDialect

Returns:

true if from clause is supported

getMaxVarcharLength

public int getMaxVarcharLength()

Description copied from class: Dialect

The biggest size value that can be supplied as argument to a Types.VARCHAR-like type.

For longer column lengths, use some sort of text-like type for the column.

Overrides:

getMaxVarcharLength in class PostgreSQLDialect

getMaxVarbinaryLength

public int getMaxVarbinaryLength()

Description copied from class: Dialect

The biggest size value that can be supplied as argument to a Types.VARBINARY-like type.

For longer column lengths, use some sort of image-like type for the column.

Overrides:

getMaxVarbinaryLength in class PostgreSQLDialect

getCurrentSchemaCommand

public String getCurrentSchemaCommand()

Description copied from class: Dialect

Get the SQL command used to retrieve the current schema name.

Works in conjunction with Dialect.getSchemaNameResolver(), unless the resulting SchemaNameResolver does not need this information. For example, a custom implementation might make use of the Java 1.7 Connection.getSchema() method.

Overrides:

getCurrentSchemaCommand in class PostgreSQLDialect

Returns:

The current schema retrieval SQL

supportsCommentOn

public boolean supportsCommentOn()

Description copied from class: Dialect

Does this dialect support commenting on tables and columns?

Overrides:

supportsCommentOn in class PostgreSQLDialect

Returns:

true if commenting is supported

supportsWindowFunctions

public boolean supportsWindowFunctions()

Description copied from class: Dialect

Does this dialect support window functions like row_number() over (..)?

Overrides:

supportsWindowFunctions in class PostgreSQLDialect

Returns:

true if the underlying database supports window functions, false otherwise. The default is false.

getInExpressionCountLimit

public int getInExpressionCountLimit()

Description copied from class: Dialect

Return the limit that the underlying database places on the number of elements in an IN predicate. If the database defines no such limits, simply return zero or a number smaller than zero.

Overrides:

getInExpressionCountLimit in class Dialect

Returns:

The limit, or a non-positive integer to indicate no limit.

getAddForeignKeyConstraintString

public String getAddForeignKeyConstraintString(String constraintName,
 String[] foreignKey,
 String referencedTable,
 String[] primaryKey,
 boolean referencesPrimaryKey)

Description copied from class: Dialect

The syntax used to add a foreign key constraint to a table, with the referenced key columns explicitly specified.

Overrides:

getAddForeignKeyConstraintString in class Dialect

Parameters:

constraintName - The foreign key constraint name

foreignKey - The names of the columns comprising the foreign key

referencedTable - The table referenced by the foreign key

primaryKey - The explicit columns in the referencedTable referenced by this foreign key.

referencesPrimaryKey - if false, constraint should be explicit about which column names the constraint refers to

Returns:

the "add FK" fragment

canBatchTruncate

public boolean canBatchTruncate()

Description copied from class: Dialect

Does the truncate table statement accept multiple tables?

Overrides:

canBatchTruncate in class PostgreSQLDialect

Returns:

true, but only because we can "batch" truncate

rowId

public String rowId(String rowId)

Description copied from class: Dialect

The name of a rowid-like pseudo-column which acts as a high-performance row locator, or null if this dialect has no such pseudo-column.

If the rowid-like value is an explicitly declared named column instead of an implicit pseudo-column, and if the given name is nonempty, return the given name.

Overrides:

rowId in class PostgreSQLDialect

Parameters:

rowId - the name specified by RowId.value(), which is ignored if Dialect.getRowIdColumnString(String) is not overridden

supportsRowConstructor

public boolean supportsRowConstructor()

Description copied from class: Dialect

Whether the SQL row constructor is supported.

Overrides:

supportsRowConstructor in class PostgreSQLDialect

getTruncateTableStatement

public String getTruncateTableStatement(String tableName)

Description copied from class: Dialect

A SQL statement that truncates the given table.

Overrides:

getTruncateTableStatement in class Dialect

Parameters:

tableName - the name of the table

getBeforeDropStatement

public String getBeforeDropStatement()

Description copied from class: Dialect

A command to execute before dropping tables.

Overrides:

getBeforeDropStatement in class PostgreSQLDialect

Returns:

A SQL statement, or null

getCascadeConstraintsString

public String getCascadeConstraintsString()

Description copied from class: Dialect

The keyword that specifies that a drop table operation should be cascaded to its constraints, typically " cascade" where the leading space is required, or the empty string if there is no such keyword in this dialect.

Overrides:

getCascadeConstraintsString in class PostgreSQLDialect

Returns:

The cascade drop keyword, if any, with a leading space

supportsIfExistsBeforeConstraintName

public boolean supportsIfExistsBeforeConstraintName()

Description copied from class: Dialect

For dropping a constraint with an alter table statement, can the phrase if exists be applied before the constraint name?

Overrides:

supportsIfExistsBeforeConstraintName in class PostgreSQLDialect

Returns:

true if if exists can be applied before the constraint name

supportsIfExistsAfterAlterTable

public boolean supportsIfExistsAfterAlterTable()

Description copied from class: Dialect

For an alter table, can the phrase if exists be applied?

Overrides:

supportsIfExistsAfterAlterTable in class PostgreSQLDialect

Returns:

true if if exists can be applied after alter table

supportsDistinctFromPredicate

public boolean supportsDistinctFromPredicate()

Description copied from class: Dialect

Does this dialect support some kind of distinct from predicate?

That is, does it support syntax like:

... where FIRST_NAME IS DISTINCT FROM LAST_NAME

Overrides:

supportsDistinctFromPredicate in class PostgreSQLDialect

Returns:

True if this SQL dialect is known to support some kind of distinct from predicate; false otherwise

supportsPartitionBy

public boolean supportsPartitionBy()

Description copied from class: Dialect

Does is dialect support partition by in window functions?

Overrides:

supportsPartitionBy in class PostgreSQLDialect

addPartitionKeyToPrimaryKey

public boolean addPartitionKeyToPrimaryKey()

Description copied from class: Dialect

Does this dialect require that the columns listed in partition by also occur in the primary key, when defining table partitioning?

Overrides:

addPartitionKeyToPrimaryKey in class PostgreSQLDialect

getDual

public String getDual()

Description copied from class: Dialect

Returns a table expression that has one row.

Overrides:

getDual in class Dialect

Returns:

the SQL equivalent to Oracle's dual.

getFromDualForSelectOnly

public String getFromDualForSelectOnly()

Overrides:

getFromDualForSelectOnly in class Dialect

datetimeFormat

public Replacer datetimeFormat(String format)

Overrides:

datetimeFormat in class PostgreSQLDialect

supportsRecursiveCTE

public boolean supportsRecursiveCTE()

Description copied from class: Dialect

Does this dialect/database support recursive CTEs?

Overrides:

supportsRecursiveCTE in class PostgreSQLDialect

Returns:

true if recursive CTEs are supported

supportsWithClauseInSubquery

public boolean supportsWithClauseInSubquery()

Description copied from class: Dialect

Whether the SQL with clause is supported within a subquery.

Overrides:

supportsWithClauseInSubquery in class Dialect

supportsNestedWithClause

public boolean supportsNestedWithClause()

Description copied from class: Dialect

Whether the SQL with clause is supported within a CTE.

Overrides:

supportsNestedWithClause in class Dialect

supportsCteHeaderColumnList

public boolean supportsCteHeaderColumnList()

Description copied from class: Dialect

Does this dialect support defining the column list in the CTE header?

Standard syntax: WITH cte (col1, col2) AS ...

If false, Hibernate will generate: WITH cte AS (SELECT ... AS col1, ... AS col2)

Overrides:

supportsCteHeaderColumnList in class Dialect

Returns:

true if the dialect supports the column list in the CTE header; false otherwise.

supportsTupleDistinctCounts

public boolean supportsTupleDistinctCounts()

Description copied from class: Dialect

Does this dialect support count(distinct a,b)?

Overrides:

supportsTupleDistinctCounts in class Dialect

Returns:

True if the database supports counting distinct tuples; false otherwise.

getInformationExtractor

public InformationExtractor getInformationExtractor(ExtractionContext extractionContext)

Description copied from class: Dialect

A InformationExtractor which is able to extract table, primary key, foreign key, index information etc. via JDBC.

Overrides:

getInformationExtractor in class PostgreSQLDialect

getFallbackSqmMutationStrategy

public SqmMultiTableMutationStrategy getFallbackSqmMutationStrategy(EntityMappingType rootEntityDescriptor,
 RuntimeModelCreationContext runtimeModelCreationContext)

Description copied from class: Dialect

The SqmMultiTableMutationStrategy to use when not specified by QueryEngineOptions.getCustomSqmMultiTableMutationStrategy().

Overrides:

getFallbackSqmMutationStrategy in class PostgreSQLDialect

See Also:

• SqmMultiTableMutationStrategyProvider.createMutationStrategy(EntityMappingType, MappingModelCreationProcess)

getFallbackSqmInsertStrategy

public SqmMultiTableInsertStrategy getFallbackSqmInsertStrategy(EntityMappingType rootEntityDescriptor,
 RuntimeModelCreationContext runtimeModelCreationContext)

Description copied from class: Dialect

The SqmMultiTableInsertStrategy to use when not specified by QueryEngineOptions.getCustomSqmMultiTableInsertStrategy().

Overrides:

getFallbackSqmInsertStrategy in class PostgreSQLDialect

See Also:

• SqmMultiTableMutationStrategyProvider.createInsertStrategy(EntityMappingType, MappingModelCreationProcess)

getLocalTemporaryTableStrategy

public TemporaryTableStrategy getLocalTemporaryTableStrategy()

Description copied from class: Dialect

The strategy to use for local temporary tables.

Overrides:

getLocalTemporaryTableStrategy in class PostgreSQLDialect

getGlobalTemporaryTableStrategy

public @Nullable TemporaryTableStrategy getGlobalTemporaryTableStrategy()

Description copied from class: Dialect

The strategy to use for global temporary tables.

Overrides:

getGlobalTemporaryTableStrategy in class Dialect

getPersistentTemporaryTableStrategy

public TemporaryTableStrategy getPersistentTemporaryTableStrategy()

Description copied from class: Dialect

The strategy to use for persistent temporary tables.

Overrides:

getPersistentTemporaryTableStrategy in class Dialect

buildSQLExceptionConversionDelegate

public SQLExceptionConversionDelegate buildSQLExceptionConversionDelegate()

Description copied from class: Dialect

An instance of SQLExceptionConversionDelegate for interpreting dialect-specific error or SQLState codes.

If this method is overridden to return a non-null value, the default SQLExceptionConverter will use the returned SQLExceptionConversionDelegate in addition to the following standard delegates:

1. a "static" delegate based on the JDBC4-defined SQLException hierarchy, and
2. a delegate that interprets SQLState codes as either X/Open or SQL-2003 codes, depending on what is reported by the JDBC driver.

It is strongly recommended that every Dialect implementation override this method, since interpretation of a SQL error is much more accurate when based on the vendor-specific error code, rather than on the SQLState.

Overrides:

buildSQLExceptionConversionDelegate in class PostgreSQLDialect

Returns:

The SQLExceptionConversionDelegate for this dialect

getCallableStatementSupport

public CallableStatementSupport getCallableStatementSupport()

Description copied from class: Dialect

The CallableStatementSupport for this database. Does this database support returning cursors?

Overrides:

getCallableStatementSupport in class PostgreSQLDialect

useIntegerForPrimaryKey

public boolean useIntegerForPrimaryKey()

createOptionalTableUpdateOperation

public MutationOperation createOptionalTableUpdateOperation(EntityMutationTarget mutationTarget,
 org.hibernate.sql.model.internal.OptionalTableUpdate optionalTableUpdate,
 SessionFactoryImplementor factory)

Description copied from class: Dialect

Create a MutationOperation for a updating an optional table

Overrides:

createOptionalTableUpdateOperation in class PostgreSQLDialect