Java XPath Expression isValidFilter(String xPathString)

Description

is Valid Filter

License

Apache License

Declaration

public static boolean isValidFilter(String xPathString) 

Method Source Code

//package com.java2s;
/**/*from  w w  w.  j  a va2s .c om*/
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache 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.apache.org/licenses/LICENSE-2.0
 *
 * 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.XPathExpressionException;
import javax.xml.xpath.XPathFactory;

public class Main {
    private static XPathFactory xPathFactory = XPathFactory.newInstance();

    public static boolean isValidFilter(String xPathString) {
        if (xPathString == null) {
            return true;
        }
        try {
            XPath xPath = xPathFactory.newXPath();
            xPath.compile(xPathString);
            return true;
        } catch (XPathExpressionException ex) {
            return false;
        }
    }
}

Related

1. extractNodes(File xmlFile, String xpathLocator)
2. extractValue(String xml, String xpathExpression)
3. findElements(final String xPathExpression, final Element root)
4. hasAnimatedPng(ImageReader reader)
5. isLegalXPath(final String xPath)
6. isXPathAbsolute(String path)
7. loadFromXmlNode(String xmlFile, String prefix)
8. loadNodeList(String file, String path)
9. merge(XPathExpression expression, InputStream... files)