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org.hibernate.dialect.function

Class CharIndexFunction

Implemented Interfaces:
SQLFunction
public class CharIndexFunction
extends java.lang.Object
implements SQLFunction
Emulation of locate() on Sybase
Author:
Nathan Moon

Method Summary

Type
getReturnType(Type columnType, Mapping mapping)
The return type of the function.
boolean
hasArguments()
Does this function have any arguments?
boolean
hasParenthesesIfNoArguments()
If there are no arguments, are parens required?
String
render(List args, SessionFactoryImplementor factory)
Render the function call as SQL fragment.

Method Details

getReturnType

public Type getReturnType(Type columnType,
                          Mapping mapping)
            throws QueryException
The return type of the function. May be either a concrete type which is preset, or variable depending upon the type of the first function argument.
Specified by:
getReturnType in interface SQLFunction
Parameters:
columnType - the type of the first argument
mapping - The mapping source.
Returns:
The type to be expected as a return.
Throws:
QueryException - Indicates an issue resolving the return type.

hasArguments

public boolean hasArguments()
Does this function have any arguments?
Specified by:
hasArguments in interface SQLFunction
Returns:
True if the function expects to have parameters; false otherwise.

hasParenthesesIfNoArguments

public boolean hasParenthesesIfNoArguments()
If there are no arguments, are parens required?
Specified by:
hasParenthesesIfNoArguments in interface SQLFunction
Returns:
True if a no-arg call of this function requires parentheses.

render

public String render(List args,
                     SessionFactoryImplementor factory)
            throws QueryException
Render the function call as SQL fragment.
Specified by:
render in interface SQLFunction
Parameters:
args - The function arguments
factory - The SessionFactory
Returns:
The rendered function call
Throws:
QueryException - Indicates a problem rendering the function call.

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