Package org.hibernate.sql.ast.spi

Interface SqlExpressionResolver

All Known Implementing Classes:

AbstractSqlAstQueryNodeProcessingStateImpl, BaseSqmToSqlAstConverter.DelegatingSqmAliasedNodeCollector, BaseSqmToSqlAstConverter.SqmAliasedNodePositionTracker, DomainResultCreationStateImpl, SqlAstProcessingStateImpl, SqlAstQueryNodeProcessingStateImpl, SqlAstQueryPartProcessingStateImpl

public interface SqlExpressionResolver

Resolution of a SqlSelection reference for a given SqlSelectable. Some SqlSelectable are required to be qualified (e.g. a Column) - this is indicated by the QualifiableSqlSelectable subtype. The NonQualifiableSqlSelectable subtype indicates a SqlSelectable that does not require qualification (e.g. a literal).

The point of this contract is to allow "unique-ing" of SqlSelectable references in a query to a single SqlSelection reference - effectively a caching of SqlSelection instances keyed by the SqlSelectable (+ qualifier when applicable) that it refers to.

Note also that the returns can be a specialized Expression represented by SqlSelectionExpression

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static final class	SqlExpressionResolver.ColumnReferenceKey

Method Summary

Modifier and Type	Method	Description
static SqlExpressionResolver.ColumnReferenceKey	createColumnReferenceKey(String columnExpression)
static SqlExpressionResolver.ColumnReferenceKey	createColumnReferenceKey(String tableExpression, String columnExpression, JdbcMapping jdbcMapping)	Helper for generating an expression key for a column reference.
static SqlExpressionResolver.ColumnReferenceKey	createColumnReferenceKey(String tableExpression, SelectableMapping selectable)	Convenience form for creating a key from table expression and SelectableMapping
static SqlExpressionResolver.ColumnReferenceKey	createColumnReferenceKey(String qualifier, SelectablePath selectablePath, JdbcMapping jdbcMapping)
static SqlExpressionResolver.ColumnReferenceKey	createColumnReferenceKey(TableReference tableReference, String columnExpression, JdbcMapping jdbcMapping)	Helper for generating an expression key for a column reference.
static SqlExpressionResolver.ColumnReferenceKey	createColumnReferenceKey(TableReference tableReference, SelectableMapping selectable)	Convenience form for creating a key from TableReference and SelectableMapping
static SqlExpressionResolver.ColumnReferenceKey	createColumnReferenceKey(TableReference tableReference, SelectablePath selectablePath, JdbcMapping jdbcMapping)
static SqlExpressionResolver.ColumnReferenceKey	createDiscriminatorColumnReferenceKey(TableReference tableReference, EntityDiscriminatorMapping discriminatorMapping)	Convenience form for creating a key from TableReference and EntityDiscriminatorMapping
Expression	resolveSqlExpression(SqlExpressionResolver.ColumnReferenceKey key, Function<SqlAstProcessingState,Expression> creator)	Given a qualifier + a qualifiable SqlExpressible, resolve the (Sql)Expression reference.
default Expression	resolveSqlExpression(TableReference tableReference, SelectableMapping selectableMapping)
SqlSelection	resolveSqlSelection(Expression expression, JavaType<?> javaType, FetchParent fetchParent, TypeConfiguration typeConfiguration)	Resolve the SqlSelection for the given expression

Method Details

createColumnReferenceKey

static SqlExpressionResolver.ColumnReferenceKey createColumnReferenceKey(String tableExpression,
 String columnExpression,
 JdbcMapping jdbcMapping)

Helper for generating an expression key for a column reference.

See Also:

• resolveSqlExpression(org.hibernate.sql.ast.tree.from.TableReference, org.hibernate.metamodel.mapping.SelectableMapping)

createColumnReferenceKey

static SqlExpressionResolver.ColumnReferenceKey createColumnReferenceKey(TableReference tableReference,
 String columnExpression,
 JdbcMapping jdbcMapping)

Helper for generating an expression key for a column reference.

See Also:

• resolveSqlExpression(org.hibernate.sql.ast.tree.from.TableReference, org.hibernate.metamodel.mapping.SelectableMapping)

createColumnReferenceKey

static SqlExpressionResolver.ColumnReferenceKey createColumnReferenceKey(TableReference tableReference,
 SelectablePath selectablePath,
 JdbcMapping jdbcMapping)

createColumnReferenceKey

static SqlExpressionResolver.ColumnReferenceKey createColumnReferenceKey(String qualifier,
 SelectablePath selectablePath,
 JdbcMapping jdbcMapping)

createColumnReferenceKey

static SqlExpressionResolver.ColumnReferenceKey createColumnReferenceKey(String columnExpression)

createColumnReferenceKey

static SqlExpressionResolver.ColumnReferenceKey createColumnReferenceKey(String tableExpression,
 SelectableMapping selectable)

Convenience form for creating a key from table expression and SelectableMapping

createColumnReferenceKey

static SqlExpressionResolver.ColumnReferenceKey createColumnReferenceKey(TableReference tableReference,
 SelectableMapping selectable)

Convenience form for creating a key from TableReference and SelectableMapping

createDiscriminatorColumnReferenceKey

static SqlExpressionResolver.ColumnReferenceKey createDiscriminatorColumnReferenceKey(TableReference tableReference,
 EntityDiscriminatorMapping discriminatorMapping)

Convenience form for creating a key from TableReference and EntityDiscriminatorMapping

resolveSqlExpression

default Expression resolveSqlExpression(TableReference tableReference,
 SelectableMapping selectableMapping)

resolveSqlExpression

Expression resolveSqlExpression(SqlExpressionResolver.ColumnReferenceKey key,
 Function<SqlAstProcessingState,Expression> creator)

Given a qualifier + a qualifiable SqlExpressible, resolve the (Sql)Expression reference.

resolveSqlSelection

SqlSelection resolveSqlSelection(Expression expression,
 JavaType<?> javaType,
 FetchParent fetchParent,
 TypeConfiguration typeConfiguration)

Resolve the SqlSelection for the given expression