Package com.blazebit.persistence.impl.function.window.lag

Class LagFunction

java.lang.Object

com.blazebit.persistence.impl.function.window.AbstractWindowFunction

com.blazebit.persistence.impl.function.window.lag.LagFunction

All Implemented Interfaces:

JpqlFunction

public class LagFunction
extends AbstractWindowFunction

Since:

1.4.0

Author:

Jan-Willem Gmelig Meyling, Sayra Ranjha

Nested Class Summary

Nested classes/interfaces inherited from class com.blazebit.persistence.impl.function.window.AbstractWindowFunction

AbstractWindowFunction.WindowFunction

Field Summary

Fields

Modifier and Type	Field	Description
static final String	FUNCTION_NAME

Fields inherited from class com.blazebit.persistence.impl.function.window.AbstractWindowFunction

allowsFilterClause, functionName, nullIsSmallest, supportsFilterClause, supportsNullPrecedence

Constructor Summary

Constructors

Constructor	Description
LagFunction(DbmsDialect dbmsDialect)

Method Summary

Modifier and Type	Method	Description
protected void	renderArgument(FunctionRenderContext context, AbstractWindowFunction.WindowFunction windowFunction, String caseWhenPre, String caseWhenPost, String argument, int argumentIndex)
protected boolean	requiresOver()

Methods inherited from class com.blazebit.persistence.impl.function.window.AbstractWindowFunction

appendEmulatedOrderByElementWithNulls, getCaseWhenPost, getCaseWhenPre, getReturnType, getWindowFunction, getWindowFunction, hasArguments, hasParenthesesIfNoArguments, optimizeNullPrecedence, processArgument, render, render, renderArguments, renderFilterExpressions, renderFrame, renderFramePosition, renderFunction, renderOrder, renderOrderBy, renderPartitions, renderWithinGroup

Methods inherited from class java.lang.Object

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

Field Details

FUNCTION_NAME

public static final String FUNCTION_NAME

See Also:

• Constant Field Values

Constructor Details

LagFunction

public LagFunction(DbmsDialect dbmsDialect)

Method Details

renderArgument

protected void renderArgument(FunctionRenderContext context,
 AbstractWindowFunction.WindowFunction windowFunction,
 String caseWhenPre,
 String caseWhenPost,
 String argument,
 int argumentIndex)

Overrides:

renderArgument in class AbstractWindowFunction

requiresOver

protected boolean requiresOver()

Overrides:

requiresOver in class AbstractWindowFunction