001/**
002 *
003 * Copyright the original author or authors
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * 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 */
017package org.jivesoftware.smack.initializer;
018
019import java.util.Collections;
020import java.util.List;
021
022import org.jivesoftware.smack.provider.ProviderManager;
023
024
025/**
026 * Looks for a provider file location based on the VM argument <i>smack.provider.file</i>.  If it is supplied, its value will
027 * be used as a file location for a providers file and loaded into the {@link ProviderManager} on Smack initialization.
028 *
029 * @author Robin Collier
030 *
031 */
032public class VmArgInitializer extends UrlInitializer {
033
034    protected String getFilePath() {
035        return System.getProperty("smack.provider.file");
036    }
037
038    @Override
039    public List<Exception> initialize() {
040        if (getFilePath() != null) {
041            super.initialize();
042        }
043        return Collections.emptyList();
044    }
045}