org.revenj.postgres.jinq.transform

Class GroupingTransform

java.lang.Object

org.revenj.postgres.jinq.transform.RevenjQueryTransform

org.revenj.postgres.jinq.transform.RevenjMultiLambdaQueryTransform

org.revenj.postgres.jinq.transform.GroupingTransform

public class GroupingTransform
extends RevenjMultiLambdaQueryTransform

Constructor Summary

Constructors

Constructor and Description
GroupingTransform(RevenjQueryTransformConfiguration config)

Method Summary

Modifier and Type	Method and Description
<U,V> JinqPostgresQuery<U>	apply(JinqPostgresQuery<V> query, LambdaAnalysis[] lambdas, SymbExArgumentHandler parentArgumentScope)
protected <U> RowReader<U>	createTupleReader(RowReader<?>[] readers)
String	getTransformationTypeCachingTag() Returns a String that can be used to identify the type of transformation being applied.

Methods inherited from class org.revenj.postgres.jinq.transform.RevenjQueryTransform

makeSelectExpression, pathConditionsToExpr, simplifyAndTranslateMainPathToColumns, simplifyAndTranslatePathToColumns

Methods inherited from class java.lang.Object

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

Constructor Detail

GroupingTransform

public GroupingTransform(RevenjQueryTransformConfiguration config)

Method Detail

createTupleReader

protected <U> RowReader<U> createTupleReader(RowReader<?>[] readers)

apply

public <U,V> JinqPostgresQuery<U> apply(JinqPostgresQuery<V> query,
                                        LambdaAnalysis[] lambdas,
                                        SymbExArgumentHandler parentArgumentScope)
                                 throws QueryTransformException

Overrides:

apply in class RevenjMultiLambdaQueryTransform

Throws:

QueryTransformException

getTransformationTypeCachingTag

public String getTransformationTypeCachingTag()

Description copied from class: RevenjQueryTransform

Returns a String that can be used to identify the type of transformation being applied. This is useful for caching the effects of query transforms.

Specified by:

getTransformationTypeCachingTag in class RevenjQueryTransform