eqlreqsubwherecond.java

CRM源码This file describes some issues that should be implemented in future and how it should be imple

/*
 * Copyright 2006-2007 Queplix Corp.
 *
 * Licensed under the Queplix Public License, Version 1.1.1 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.queplix.com/solutions/commercial-open-source/queplix-public-license/
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package com.queplix.core.modules.eql;

/**
 * <p>EQL Sub Where Condition abstract class</p>
 * @author Baranov Andrey [ALB]
 * @version $Revision: 1.1.1.1 $ $Date: 2005/09/12 15:30:21 $
 */

public abstract class EQLReqSubWhereCond
    implements java.io.Serializable {

    private EQLReqOp leftMember;
    private EQLReqOp rightMember;

    protected EQLReqSubWhereCond( EQLReqOp leftMember, EQLReqOp rightMember ) {
        if( leftMember == null ) {
            throw new NullPointerException( "Left EQLReqOp cannot be NULL" );
        }
        this.leftMember = leftMember;
        this.rightMember = rightMember;
    }

    public EQLReqOp getLeftMember() {
        return leftMember;
    }

    public EQLReqOp getRightMember() {
        return rightMember;
    }

    public int hashCode() {
        return leftMember.hashCode() | rightMember.hashCode();
    }

    public boolean equals( Object o ) {
        if( ! ( o instanceof EQLReqSubWhereCond ) ) {
            return false;
        }
        if( o == this ) {
            return true;
        }

        EQLReqSubWhereCond reqSubWhereCond = ( EQLReqSubWhereCond ) o;
        return leftMember.equals( reqSubWhereCond.getLeftMember() ) &&
            ( ( rightMember != null && rightMember.equals( reqSubWhereCond.getRightMember() ) ) ||
              ( rightMember == null && reqSubWhereCond.getRightMember() == null ) );
    }
}