Package org.hibernate.dialect.function

Class DB2SubstringFunction

java.lang.Object

org.hibernate.query.sqm.function.AbstractSqmFunctionDescriptor

org.hibernate.query.sqm.function.AbstractSqmSelfRenderingFunctionDescriptor

org.hibernate.dialect.function.DB2SubstringFunction

All Implemented Interfaces:

FunctionRenderer, FunctionRenderingSupport, SqmFunctionDescriptor

public class DB2SubstringFunction
extends AbstractSqmSelfRenderingFunctionDescriptor

DB2's substring() function requires a code unit and substr() can't optionally take it, so we render substr() by default. If the code unit is passed, we render substring().

Constructor Summary

Constructors

Constructor	Description
DB2SubstringFunction(TypeConfiguration typeConfiguration)

Method Summary

Modifier and Type	Method	Description
String	getSignature(String name)	Used only for pretty-printing the function signature in the log.
void	render(SqlAppender sqlAppender, List<? extends SqlAstNode> arguments, ReturnableType<?> returnType, 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, getArgumentListSignature, getArgumentsValidator, getArgumentTypeResolver, getName, getReturnSignature, getReturnTypeResolver

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.FunctionRenderer

render, render, render, render

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 Details

DB2SubstringFunction

public DB2SubstringFunction(TypeConfiguration typeConfiguration)

Method Details

render

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

Specified by:

render in interface FunctionRenderer

Specified by:

render in interface FunctionRenderingSupport

Overrides:

render in class AbstractSqmSelfRenderingFunctionDescriptor

getSignature

public String getSignature(String name)

Description copied from interface: SqmFunctionDescriptor

Used only for pretty-printing the function signature in the log.

Specified by:

getSignature in interface SqmFunctionDescriptor

Overrides:

getSignature in class AbstractSqmFunctionDescriptor

Parameters:

name - the function name

Returns:

the signature of the function