slider-core/src/main/java/org/apache/slider/providers/agent/application/metadata/DefaultConfigParser.java

/*
 * 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.slider.providers.agent.application.metadata;

import org.apache.commons.digester.Digester;
import org.xml.sax.SAXException;

import java.io.IOException;
import java.io.InputStream;

/**
 *
 */
public class DefaultConfigParser {

  public DefaultConfig parse(InputStream configFileStream) throws IOException {
    Digester digester = new Digester();
    digester.setValidating(false);

    digester.addObjectCreate("configuration", DefaultConfig.class);

    digester.addObjectCreate("*/property", PropertyInfo.class);
    digester.addBeanPropertySetter("*/property/name");
    digester.addBeanPropertySetter("*/property/value");
    digester.addBeanPropertySetter("*/property/description");
    digester.addSetNext("*/property", "addPropertyInfo");

    try {
      return (DefaultConfig) digester.parse(configFileStream);
    } catch (IOException e) {

    } catch (SAXException e) {

    } finally {
      configFileStream.close();
    }

    return null;
  }
}