Package org.hibernate.dialect.function

Class LpadRpadPadEmulation

java.lang.Object

org.hibernate.query.sqm.function.AbstractSqmFunctionDescriptor

org.hibernate.dialect.function.LpadRpadPadEmulation

All Implemented Interfaces:

SqmFunctionDescriptor

public class LpadRpadPadEmulation
extends AbstractSqmFunctionDescriptor

HQL function inspired by the ANSI SQL trim function, with a funny syntax involving a TrimSpec. Emulated using rpad() and lpad() or by equivalent emulations of those functions.

For example, pad(text with 5 leading ' ').

Constructor Summary

Constructors

Constructor	Description
LpadRpadPadEmulation(TypeConfiguration typeConfiguration)

Method Summary

Modifier and Type	Method	Description
protected <T> SelfRenderingSqmFunction<T>	generateSqmFunctionExpression(List<? extends SqmTypedNode<?>> arguments, ReturnableType<T> impliedResultType, QueryEngine queryEngine)	Return an SQM node or subtree representing an invocation of this function with the given arguments.
String	getArgumentListSignature()

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

generateAggregateSqmExpression, generateOrderedSetAggregateSqmExpression, generateSqmAggregateFunctionExpression, generateSqmExpression, generateSqmOrderedSetAggregateFunctionExpression, generateSqmWindowFunctionExpression, 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.SqmFunctionDescriptor

alwaysIncludesParentheses, generateSqmExpression, generateSqmExpression, getFunctionKind, isPredicate

Constructor Details

LpadRpadPadEmulation

public LpadRpadPadEmulation(TypeConfiguration typeConfiguration)

Method Details

generateSqmFunctionExpression

protected <T> SelfRenderingSqmFunction<T> generateSqmFunctionExpression(List<? extends SqmTypedNode<?>> arguments,
 ReturnableType<T> impliedResultType,
 QueryEngine queryEngine)

Description copied from class: AbstractSqmFunctionDescriptor

Return an SQM node or subtree representing an invocation of this function with the given arguments. This method may be overridden in the case of function descriptors that wish to customize creation of the node.

Specified by:

generateSqmFunctionExpression in class AbstractSqmFunctionDescriptor

Parameters:

arguments - the arguments of the function invocation

impliedResultType - the function return type as inferred from its usage

getArgumentListSignature

public String getArgumentListSignature()

Overrides:

getArgumentListSignature in class AbstractSqmFunctionDescriptor