Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/**
 * Copyright 2005-2015 The Kuali Foundation
 *
 * Licensed under the Educational Community License, Version 2.0 (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.opensource.org/licenses/ecl2.php
 *
 * 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.
 */

import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;

public class Main {
    /**
     * Convenience method that performs an xpath evaluation to determine whether the expression
     * evaluates to true (a node exists).
     * This is method exists only to disambiguate the cases of determining the *presence* of a node
     * and determining the *boolean value of the node as converted from a string*, as the syntaxes
     * are very similar and could be misleading.
     *
     * @param xpath      the XPath object
     * @param expression the XPath expression
     * @param object     the object on which to evaluate the expression as required by the XPath API, typically a Node
     * @return whether the result of the expression evaluation, which is whether or not a node was present
     * @throws XPathExpressionException if the expression fails
     */
    public static boolean pathExists(XPath xpath, String expression, Object object)
            throws XPathExpressionException {
        return ((Boolean) xpath.evaluate(expression, object, XPathConstants.BOOLEAN)).booleanValue();
    }
}