org.eclipse.persistence.jpa.jpql.tools.resolver.MathFunctionResolver Maven / Gradle / Ivy
/*
* Copyright (c) 2022 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// 04/21/2022: Tomas Kraus
// - Issue 1474: Update JPQL Grammar for Jakarta Persistence 2.2, 3.0 and 3.1
package org.eclipse.persistence.jpa.jpql.tools.resolver;
import org.eclipse.persistence.jpa.jpql.tools.spi.IType;
import org.eclipse.persistence.jpa.jpql.tools.spi.ITypeDeclaration;
/**
* This {@link Resolver} is responsible to calculate the {@link IType} based on the type of the
* math function expression. The valid type is a Number type.
*
* The math function takes a numeric argument and returns a number (integer, float, or double)
* of the same type as the argument to the function.
*/
public abstract class MathFunctionResolver extends Resolver {
/**
* The CEILING math function expression resolver.
*/
public static final class Ceiling extends MathFunctionResolver {
/**
* Creates a new instance of CEILING function expression resolver.
*
* @param parent The parent {@link Resolver}, which is never null
*/
public Ceiling(Resolver parent) {
super(parent);
}
}
/**
* The FLOOR math function expression resolver.
*/
public static final class Floor extends MathFunctionResolver {
/**
* Creates a new instance of FLOOR function expression resolver.
*
* @param parent The parent {@link Resolver}, which is never null
*/
public Floor(Resolver parent) {
super(parent);
}
}
/**
* The ROUND math function expression resolver.
*/
public static final class Round extends MathFunctionResolver {
/**
* Creates a new instance of ROUND function expression resolver.
*
* @param parent The parent {@link Resolver}, which is never null
*/
public Round(Resolver parent) {
super(parent);
}
}
/**
* Creates a new instance of math function expression resolver.
*
* @param parent The parent {@link Resolver}, which is never null
*/
public MathFunctionResolver(Resolver parent) {
super(parent);
}
@Override
protected IType buildType() {
IType type = getParentType();
// Anything else is an invalid type
if (!getTypeHelper().isNumericType(type)) {
type = getTypeHelper().objectType();
}
return type;
}
@Override
protected ITypeDeclaration buildTypeDeclaration() {
return getParentTypeDeclaration();
}
}