ActiveMQ example source code file (ValidateXMLConfigTest.java)

This example ActiveMQ source code file (ValidateXMLConfigTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

documentbuilder, entityresolver, exception, exception, file, file, inputsource, io, ioexception, parser, sax, saxexception, saxexception, string, string, test, xml, xsd_schema_language

The ActiveMQ ValidateXMLConfigTest.java source code

/**
 * 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.
 */
package org.apache.activemq.config;

import static org.junit.Assert.fail;

import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import java.io.InputStream;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.junit.Test;
import org.xml.sax.EntityResolver;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;


public class ValidateXMLConfigTest {
    private static final String SCHEMA_LANGUAGE_ATTRIBUTE = "http://java.sun.com/xml/jaxp/properties/schemaLanguage";
    private static final String XSD_SCHEMA_LANGUAGE = "http://www.w3.org/2001/XMLSchema";

    
    @Test
    public void validateDefaultConfig() throws Exception {
        validateXML("src/release/conf/activemq.xml");
    }
    
    @Test
    public void validateExampleConfig() throws Exception {
        // resource:copy-resource brings all config files into target/conf
        File sampleConfDir = new File("target/conf");
        
        for (File xmlFile : sampleConfDir.listFiles(new FileFilter() {
            public boolean accept(File pathname) {
                return pathname.isFile() && pathname.getName().endsWith("xml");
            }})) {
            
            validateXML(xmlFile);
        }
    }
    
    private void validateXML(String fileName) throws Exception {
        File xmlFile = new File(fileName);
        validateXML(xmlFile);
    }
        
    private void validateXML(File file) throws Exception {
        getDocumentBuilder(file.getAbsolutePath()).parse(file);
    }
    
    private DocumentBuilder getDocumentBuilder(final String fileName) throws Exception {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setValidating(true);
        factory.setNamespaceAware(true);       
        factory.setAttribute(SCHEMA_LANGUAGE_ATTRIBUTE, XSD_SCHEMA_LANGUAGE);
        
        DocumentBuilder builder = factory.newDocumentBuilder();
       
        builder.setEntityResolver(new EntityResolver() {

            public InputSource resolveEntity(String publicId, String systemId)
                    throws SAXException, IOException {
                System.err.println("resolve: " + publicId + ", sys: " +  systemId);
                InputSource source = null;
                if (systemId.endsWith("activemq-core.xsd")) {
                   InputStream stream = this.getClass().getClassLoader().getResourceAsStream("activemq.xsd");
                   source = new InputSource(stream);
                   source.setPublicId(publicId);
                   source.setSystemId(systemId);
                }
                return source;       
            }
        });
        
        builder.setErrorHandler(new ErrorHandler() {
            public void error(SAXParseException exception) throws SAXException {
                fail(fileName + ", " + exception.toString());
            }
            public void fatalError(SAXParseException exception)
                    throws SAXException {
                fail(fileName + ", " + exception.toString());
            }
            public void warning(SAXParseException exception)
                    throws SAXException {
                fail(fileName + ", " + exception.toString());
            }
        });
        
        return builder;
    }
    
    
}