org.eclipse.persistence.internal.jpa.parsing.ParameterNode Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of eclipselink Show documentation

EclipseLink build based upon Git transaction f2b9fc5

There is a newer version: 5.0.0-B03

/*
 * Copyright (c) 1998, 2019 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:
//     Oracle - initial API and implementation from Oracle TopLink
package org.eclipse.persistence.internal.jpa.parsing;

import org.eclipse.persistence.expressions.Expression;

/**
 * INTERNAL
 * Purpose: This node represnts a Parameter (?1) in an EJBQL
 * 
Responsibilities:

 *  Generate the correct expression for an AND in EJBQL
 * 
 Maintain a
 * 

 * 
 *    @author Jon Driscoll and Joel Lucuik
 *    @since TopLink 4.0
 */
public class ParameterNode extends Node {

    /** */
    private String name;

    /**
     * Return a new ParameterNode.
     */
    public ParameterNode() {
        super();
    }

    /**
     * INTERNAL
     * Create a new ParameterNode with the passed string.
     * @param newParameterName java.lang.String
     */
    public ParameterNode(String newParameterName) {
        setParameterName(newParameterName);
    }

    /**
     * INTERNAL
     */
    @Override
    public void validateParameter(ParseTreeContext context, Object contextType) {
        context.defineParameterType(name, contextType, getLine(), getColumn());
        setType(context.getParameterType(name));
    }

    /**
     * Generate the result expression, must use the base builder
     * to avoid getting multiple builders.
     */
    @Override
    public Expression generateExpression(GenerationContext context) {
        Expression whereClause = context.getBaseExpression().getParameter(getParameterName(), getType());
        return whereClause;
    }

    /**
     * INTERNAL
     * Return the parameterName
     */
    @Override
    public String getAsString() {
        return getParameterName();
    }

    /**
     * INTERNAL
     * Return the parameter name
     */
    public String getParameterName() {
        return name;
    }

    /** */
    public void setParameterName(String name) {
        this.name = name;
    }

    /**
     * INTERNAL
     * Yes this is a Parameter node
     */
    @Override
    public boolean isParameterNode() {
        return true;
    }

}