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

Class RowNumberFunction

java.lang.Object

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

com.blazebit.persistence.impl.function.window.row.RowNumberFunction

All Implemented Interfaces:

JpqlFunction

public class RowNumberFunction
extends AbstractWindowFunction

Number of the current row within its partition, counting from 1. Syntax: row_number()

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
RowNumberFunction(DbmsDialect dbmsDialect)

Method Summary

Modifier and Type	Method	Description
Class<?>	getReturnType(Class<?> firstArgumentType)
protected void	renderArguments(FunctionRenderContext context, AbstractWindowFunction.WindowFunction windowFunction)
protected boolean	requiresOver()

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

appendEmulatedOrderByElementWithNulls, getCaseWhenPost, getCaseWhenPre, getWindowFunction, getWindowFunction, hasArguments, hasParenthesesIfNoArguments, optimizeNullPrecedence, processArgument, render, render, renderArgument, 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

RowNumberFunction

public RowNumberFunction(DbmsDialect dbmsDialect)

Method Details

getReturnType

public Class<?> getReturnType(Class<?> firstArgumentType)

Specified by:

getReturnType in interface JpqlFunction

Overrides:

getReturnType in class AbstractWindowFunction

renderArguments

protected void renderArguments(FunctionRenderContext context,
 AbstractWindowFunction.WindowFunction windowFunction)

Overrides:

renderArguments in class AbstractWindowFunction

requiresOver

protected boolean requiresOver()

Overrides:

requiresOver in class AbstractWindowFunction