Package org.hibernate.dialect.function

Class TimestampdiffFunction

java.lang.Object

org.hibernate.query.sqm.function.AbstractSqmFunctionDescriptor

org.hibernate.query.sqm.function.AbstractSqmSelfRenderingFunctionDescriptor

org.hibernate.dialect.function.TimestampdiffFunction

All Implemented Interfaces:

FunctionRenderingSupport, SqmFunctionDescriptor

public class TimestampdiffFunction
extends AbstractSqmSelfRenderingFunctionDescriptor

The timestampdiff() or datediff() function has a funny syntax which accepts a TemporalUnit as the first argument, and the actual set of accepted units varies widely. This class uses Dialect.timestampdiffPattern(TemporalUnit, TemporalType, TemporalType) to abstract these differences.

Constructor Summary

Constructors

Constructor	Description
TimestampdiffFunction(Dialect dialect, TypeConfiguration typeConfiguration)

Method Summary

Modifier and Type	Method	Description
SelfRenderingFunctionSqlAstExpression	expression(ReturnableType<?> impliedResultType, SqlAstNode... sqlAstArguments)
String	getArgumentListSignature()
void	render(SqlAppender sqlAppender, List<? extends SqlAstNode> arguments, SqlAstTranslator<?> walker)

Methods inherited from class org.hibernate.query.sqm.function.AbstractSqmSelfRenderingFunctionDescriptor

generateSqmAggregateFunctionExpression, generateSqmFunctionExpression, generateSqmOrderedSetAggregateFunctionExpression, generateSqmWindowFunctionExpression, getFunctionKind

Methods inherited from class org.hibernate.query.sqm.function.AbstractSqmFunctionDescriptor

generateAggregateSqmExpression, generateOrderedSetAggregateSqmExpression, generateSqmExpression, generateWindowSqmExpression, getArgumentsValidator, getArgumentTypeResolver, getName, getReturnSignature, getReturnTypeResolver, getSignature

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.hibernate.query.sqm.function.FunctionRenderingSupport

render, render, render

Methods inherited from interface org.hibernate.query.sqm.function.SqmFunctionDescriptor

alwaysIncludesParentheses, generateSqmExpression, generateSqmExpression

Constructor Detail

TimestampdiffFunction

public TimestampdiffFunction(Dialect dialect,
                             TypeConfiguration typeConfiguration)

Method Detail

render

public void render(SqlAppender sqlAppender,
                   List<? extends SqlAstNode> arguments,
                   SqlAstTranslator<?> walker)

expression

public SelfRenderingFunctionSqlAstExpression expression(ReturnableType<?> impliedResultType,
                                                        SqlAstNode... sqlAstArguments)

getArgumentListSignature

public String getArgumentListSignature()

Overrides:

getArgumentListSignature in class AbstractSqmFunctionDescriptor