Class SpannerPostgreSQLAggregateSupport

java.lang.Object

org.hibernate.dialect.aggregate.AggregateSupportImpl

org.hibernate.dialect.aggregate.PostgreSQLAggregateSupport

org.hibernate.dialect.aggregate.SpannerPostgreSQLAggregateSupport

All Implemented Interfaces:

AggregateSupport

public class SpannerPostgreSQLAggregateSupport
extends PostgreSQLAggregateSupport

Spanner supports only JSON aggregation. It doesn't support XML or STRUCT aggregation

Nested Class Summary

Nested classes/interfaces inherited from interface AggregateSupport

AggregateSupport.AggregateColumnWriteExpression, AggregateSupport.WriteExpressionRenderer

Field Summary

Fields

Modifier and Type	Field	Description
static final AggregateSupport	INSTANCE

Constructor Summary

Constructors

Constructor	Description
SpannerPostgreSQLAggregateSupport()

Method Summary

Modifier and Type	Method	Description
String	aggregateComponentAssignmentExpression(String aggregateParentAssignmentExpression, String columnExpression, int aggregateColumnTypeCode, Column column)	Returns the assignment expression to use for column, which is part of the aggregate type of aggregatePath.
String	aggregateComponentCustomReadExpression(String template, String placeholder, String aggregateParentReadExpression, String columnExpression, int aggregateColumnTypeCode, SqlTypedMapping column, TypeConfiguration typeConfiguration)	Returns the custom read expression to use for column.
AggregateSupport.WriteExpressionRenderer	aggregateCustomWriteExpressionRenderer(SelectableMapping aggregateColumn, SelectableMapping[] columnsToUpdate, TypeConfiguration typeConfiguration)
boolean	requiresAggregateCustomWriteExpressionRenderer(int aggregateSqlTypeCode)	Whether AggregateSupport.aggregateCustomWriteExpressionRenderer(SelectableMapping, SelectableMapping[], TypeConfiguration) is needed when assigning an expression to individual aggregated columns in an update statement.

Methods inherited from class PostgreSQLAggregateSupport

preferSelectAggregateMapping, valueOf

Methods inherited from class AggregateSupportImpl

aggregateAuxiliaryDatabaseObjects, aggregateComponentSqlTypeCode, aggregateCustomWriteExpression, preferBindAggregateMapping, supportsComponentCheckConstraints

Methods inherited from class Object

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

Methods inherited from interface AggregateSupport

aggregateComponentAssignmentExpression, aggregateComponentCustomReadExpression, useLengthsInCasts

Field Details

INSTANCE

public static final AggregateSupport INSTANCE

Constructor Details

SpannerPostgreSQLAggregateSupport

public SpannerPostgreSQLAggregateSupport()

Method Details

aggregateComponentCustomReadExpression

public String aggregateComponentCustomReadExpression(String template,
 String placeholder,
 String aggregateParentReadExpression,
 String columnExpression,
 int aggregateColumnTypeCode,
 SqlTypedMapping column,
 TypeConfiguration typeConfiguration)

Description copied from interface: AggregateSupport

Returns the custom read expression to use for column. Replaces the given placeholder in the given template by the custom read expression to use for column.

Specified by:

aggregateComponentCustomReadExpression in interface AggregateSupport

Overrides:

aggregateComponentCustomReadExpression in class PostgreSQLAggregateSupport

Parameters:

template - The custom read expression template of the column

placeholder - The placeholder to replace with the actual read expression

aggregateParentReadExpression - The expression to the aggregate column, which contains the column

columnExpression - The column within the aggregate type, for which to return the read expression

aggregateColumnTypeCode - The SQL type code of the aggregate column

column - The column within the aggregate type, for which to return the read expression

typeConfiguration - The type configuration

aggregateComponentAssignmentExpression

public String aggregateComponentAssignmentExpression(String aggregateParentAssignmentExpression,
 String columnExpression,
 int aggregateColumnTypeCode,
 Column column)

Description copied from interface: AggregateSupport

Returns the assignment expression to use for column, which is part of the aggregate type of aggregatePath.

Specified by:

aggregateComponentAssignmentExpression in interface AggregateSupport

Overrides:

aggregateComponentAssignmentExpression in class PostgreSQLAggregateSupport

Parameters:

aggregateParentAssignmentExpression - The expression to the aggregate column, which contains the column

columnExpression - The column within the aggregate type, for which to return the assignment expression

aggregateColumnTypeCode - The SQL type code of the aggregate column

column - The column within the aggregate type, for which to return the assignment expression

requiresAggregateCustomWriteExpressionRenderer

public boolean requiresAggregateCustomWriteExpressionRenderer(int aggregateSqlTypeCode)

Description copied from interface: AggregateSupport

Whether AggregateSupport.aggregateCustomWriteExpressionRenderer(SelectableMapping, SelectableMapping[], TypeConfiguration) is needed when assigning an expression to individual aggregated columns in an update statement.

Specified by:

requiresAggregateCustomWriteExpressionRenderer in interface AggregateSupport

Overrides:

requiresAggregateCustomWriteExpressionRenderer in class PostgreSQLAggregateSupport

aggregateCustomWriteExpressionRenderer

public AggregateSupport.WriteExpressionRenderer aggregateCustomWriteExpressionRenderer(SelectableMapping aggregateColumn,
 SelectableMapping[] columnsToUpdate,
 TypeConfiguration typeConfiguration)

Specified by:

aggregateCustomWriteExpressionRenderer in interface AggregateSupport

Overrides:

aggregateCustomWriteExpressionRenderer in class PostgreSQLAggregateSupport

Parameters:

aggregateColumn - The mapping of the aggregate column

columnsToUpdate - The mappings of the columns that should be updated

typeConfiguration - The type configuration