org.eclipse.persistence.jpa.jpql

Class AbsFunctionResolver

java.lang.Object

org.eclipse.persistence.jpa.jpql.Resolver

org.eclipse.persistence.jpa.jpql.AbsFunctionResolver

public class AbsFunctionResolver
extends Resolver

This Resolver is responsible to calculate the IType based on the type of the ABS expression. The valid type is a Number type.

The ABS function takes a numeric argument and returns a number (integer, float, or double) of the same type as the argument to the function.

Version:

2.4

Author:

Pascal Filion

Since:

2.3

Constructor Summary

Constructors

Constructor and Description
AbsFunctionResolver(Resolver parent) Creates a new AbsFunctionResolver.

Method Summary

Methods

Modifier and Type	Method and Description
void	accept(ResolverVisitor visitor) Visits this Resolver by the given visitor.
protected IType	buildType() Resolves the IType of the property handled by this Resolver.
protected ITypeDeclaration	buildTypeDeclaration() Resolves the ITypeDeclaration of the property handled by this Resolver.

Methods inherited from class org.eclipse.persistence.jpa.jpql.Resolver

addChild, checkParent, getChild, getManagedType, getMapping, getParent, getParentManagedType, getParentMapping, getParentType, getParentTypeDeclaration, getProvider, getQuery, getType, getType, getType, getTypeDeclaration, getTypeHelper, getTypeRepository, isNullAllowed, setNullAllowed

Methods inherited from class java.lang.Object

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

Constructor Detail

AbsFunctionResolver

public AbsFunctionResolver(Resolver parent)

Creates a new AbsFunctionResolver.

Parameters:

parent - The parent Resolver, which is never null

Method Detail

accept

public void accept(ResolverVisitor visitor)

Visits this Resolver by the given visitor.

Specified by:

accept in class Resolver

Parameters:

visitor - The visitor to visit this object

buildType

protected IType buildType()

Resolves the IType of the property handled by this Resolver.

Overrides:

buildType in class Resolver

Returns:

Either the IType that was resolved by this Resolver or the IType for IType.UNRESOLVABLE_TYPE if it could not be resolved

buildTypeDeclaration

protected ITypeDeclaration buildTypeDeclaration()

Resolves the ITypeDeclaration of the property handled by this Resolver.

Specified by:

buildTypeDeclaration in class Resolver

Returns:

Either the ITypeDeclaration that was resolved by this Resolver or the ITypeDeclaration for IType.UNRESOLVABLE_TYPE if it could not be resolved