    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *     http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017
    018package org.apache.commons.jxpath.ri.compiler;
    019
    020import org.apache.commons.jxpath.ri.EvalContext;
    021import org.apache.commons.jxpath.ri.InfoSetUtil;
    022
    023/**
    024 * Implementation of {@link Expression} for the operation "or".
    025 */
    026public class CoreOperationOr extends CoreOperation {
    027
    028    /**
    029     * Constructs a new CoreOperationOr.
    030     *
    031     * @param args or'd Expression components
    032     */
    033    public CoreOperationOr(final Expression[] args) {
    034        super(args);
    035    }
    036
    037    @Override
    038    public Object computeValue(final EvalContext context) {
    039        for (final Expression arg : args) {
    040            if (InfoSetUtil.booleanValue(arg.computeValue(context))) {
    041                return Boolean.TRUE;
    042            }
    043        }
    044        return Boolean.FALSE;
    045    }
    046
    047    @Override
    048    protected int getPrecedence() {
    049        return OR_PRECEDENCE;
    050    }
    051
    052    @Override
    053    public String getSymbol() {
    054        return "or";
    055    }
    056
    057    @Override
    058    protected boolean isSymmetric() {
    059        return true;
    060    }
    061}