Top Description Constructors Methods
org.hibernate.dialect.function

public Class CastFunction

extends Object
implements SQLFunction
Class Inheritance
All Implemented Interfaces
org.hibernate.dialect.function.SQLFunction
Imports
java.util.List, org.hibernate.QueryException, org.hibernate.engine.Mapping, .SessionFactoryImplementor, org.hibernate.type.Type
ANSI-SQL style cast(foo as type) where the type is a Hibernate type
Author
Gavin King

Constructor Summary

AccessConstructor and Description
public
CastFunction()

Method Summary

Modifier and TypeMethod and Description
public Type
getReturnType(Type
The type of the first argument
columnType, Mapping
The mapping source.
mapping)

Implements org.hibernate.dialect.function.SQLFunction.getReturnType.

The return type of the function.
public boolean
hasArguments()

Implements org.hibernate.dialect.function.SQLFunction.hasArguments.

Does this function have any arguments?
public boolean
hasParenthesesIfNoArguments()

Implements org.hibernate.dialect.function.SQLFunction.hasParenthesesIfNoArguments.

If there are no arguments, are parentheses required?
public String
render(Type
The type of the first argument
columnType, List<E>
The function arguments
args, SessionFactoryImplementor
The SessionFactory
factory)

Implements org.hibernate.dialect.function.SQLFunction.render.

Render the function call as SQL fragment.
Inherited from java.lang.Object:
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Constructor Detail

CastFunctionback to summary
public CastFunction()

Method Detail

getReturnTypeback to summary
public Type getReturnType(Type columnType, Mapping mapping) throws QueryException

Implements org.hibernate.dialect.function.SQLFunction.getReturnType.

Doc from org.hibernate.dialect.function.SQLFunction.getReturnType.

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.

Note, the 'firstArgumentType' parameter should match the one passed into render

Parameters
columnType:Type

The type of the first argument

mapping:Mapping

The mapping source.

Returns:Type

The type to be expected as a return.

Exceptions
QueryException:
Indicates an issue resolving the return type.
hasArgumentsback to summary
public boolean hasArguments()

Implements org.hibernate.dialect.function.SQLFunction.hasArguments.

Doc from org.hibernate.dialect.function.SQLFunction.hasArguments.

Does this function have any arguments?

Returns:boolean

True if the function expects to have parameters; false otherwise.

hasParenthesesIfNoArgumentsback to summary
public boolean hasParenthesesIfNoArguments()

Implements org.hibernate.dialect.function.SQLFunction.hasParenthesesIfNoArguments.

Doc from org.hibernate.dialect.function.SQLFunction.hasParenthesesIfNoArguments.

If there are no arguments, are parentheses required?

Returns:boolean

True if a no-arg call of this function requires parentheses.

renderback to summary
public String render(Type columnType, List<E> args, SessionFactoryImplementor factory) throws QueryException

Implements org.hibernate.dialect.function.SQLFunction.render.

Doc from org.hibernate.dialect.function.SQLFunction.render.

Render the function call as SQL fragment.

Note, the 'firstArgumentType' parameter should match the one passed into getReturnType

Parameters
columnType:Type

The type of the first argument

args:List<E>

The function arguments

factory:SessionFactoryImplementor

The SessionFactory

Returns:String

The rendered function call

Exceptions
QueryException:
Indicates a problem rendering the function call.