Java tutorial
/* * Copyright 2011 GeoSolutions SAS * * Licensed 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 it.geosolutions.geoserver.jms.impl.handlers.catalog; import it.geosolutions.geoserver.jms.events.ToggleSwitch; import java.io.IOException; import java.lang.reflect.InvocationTargetException; import java.util.Properties; import org.apache.commons.lang.NullArgumentException; import org.geoserver.catalog.Catalog; import org.geoserver.catalog.CatalogInfo; import org.geoserver.catalog.LayerGroupInfo; import org.geoserver.catalog.LayerInfo; import org.geoserver.catalog.MapInfo; import org.geoserver.catalog.NamespaceInfo; import org.geoserver.catalog.ResourceInfo; import org.geoserver.catalog.StoreInfo; import org.geoserver.catalog.StyleInfo; import org.geoserver.catalog.WorkspaceInfo; import org.geoserver.catalog.event.CatalogEvent; import org.geoserver.catalog.event.CatalogRemoveEvent; import com.thoughtworks.xstream.XStream; /** * * @author Carlo Cancellieri - carlo.cancellieri@geo-solutions.it * */ public class JMSCatalogRemoveEventHandler extends JMSCatalogEventHandler { private final Catalog catalog; private final ToggleSwitch producer; public JMSCatalogRemoveEventHandler(Catalog catalog, XStream xstream, Class clazz, ToggleSwitch producer) { super(xstream, clazz); this.catalog = catalog; this.producer = producer; } @Override public boolean synchronize(CatalogEvent event) throws Exception { if (event == null) { throw new NullArgumentException("Incoming object is null"); } try { if (event instanceof CatalogRemoveEvent) { final CatalogRemoveEvent removeEv = ((CatalogRemoveEvent) event); // get the source final CatalogInfo info = removeEv.getSource(); // disable the producer to avoid recursion producer.disable(); // remove the selected CatalogInfo JMSCatalogRemoveEventHandler.remove(catalog, info, getProperties()); } else { // incoming object not recognized if (LOGGER.isLoggable(java.util.logging.Level.SEVERE)) LOGGER.severe("Unrecognized event type"); return false; } } catch (Exception e) { if (LOGGER.isLoggable(java.util.logging.Level.SEVERE)) LOGGER.severe(this.getClass() + " is unable to synchronize the incoming event: " + event); throw e; } finally { // re enable the producer producer.enable(); } return true; } private static void remove(final Catalog catalog, CatalogInfo info, Properties options) throws IllegalArgumentException, IllegalAccessException, InvocationTargetException { if (info instanceof LayerGroupInfo) { final LayerGroupInfo deserObject = CatalogUtils.localizeLayerGroup((LayerGroupInfo) info, catalog); catalog.remove(deserObject); // catalog.save(CatalogUtils.getProxy(deserObject)); // info=CatalogUtils.localizeLayerGroup((LayerGroupInfo) info, // catalog); } else if (info instanceof LayerInfo) { final LayerInfo layer = CatalogUtils.localizeLayer((LayerInfo) info, catalog); catalog.remove(layer); // catalog.save(CatalogUtils.getProxy(layer)); // info=CatalogUtils.localizeLayer((LayerInfo) info, catalog); } else if (info instanceof MapInfo) { final MapInfo localObject = CatalogUtils.localizeMapInfo((MapInfo) info, catalog); catalog.remove(localObject); // catalog.save(CatalogUtils.getProxy(localObject)); // info= CatalogUtils.localizeMapInfo((MapInfo) info,catalog); } else if (info instanceof NamespaceInfo) { final NamespaceInfo namespace = CatalogUtils.localizeNamespace((NamespaceInfo) info, catalog); catalog.remove(namespace); // catalog.save(CatalogUtils.getProxy(namespace)); // info =CatalogUtils.localizeNamespace((NamespaceInfo) info, // catalog); } else if (info instanceof StoreInfo) { StoreInfo store = CatalogUtils.localizeStore((StoreInfo) info, catalog); catalog.remove(store); // catalog.save(CatalogUtils.getProxy(store)); // info=CatalogUtils.localizeStore((StoreInfo)info,catalog); } else if (info instanceof ResourceInfo) { final ResourceInfo resource = CatalogUtils.localizeResource((ResourceInfo) info, catalog); catalog.remove(resource); // catalog.save(CatalogUtils.getProxy(resource)); // info =CatalogUtils.localizeResource((ResourceInfo)info,catalog); } else if (info instanceof StyleInfo) { final StyleInfo style = CatalogUtils.localizeStyle((StyleInfo) info, catalog); catalog.remove(style); // check options final String purge = (String) options.get("purge"); if (purge != null && Boolean.parseBoolean(purge)) { try { catalog.getResourcePool().deleteStyle(style, true); } catch (IOException e) { if (LOGGER.isLoggable(java.util.logging.Level.SEVERE)) { LOGGER.severe(e.getLocalizedMessage()); } } } // catalog.detach(CatalogUtils.getProxy(deserializedObject)); // info = CatalogUtils.localizeStyle((StyleInfo) info, catalog); } else if (info instanceof WorkspaceInfo) { final WorkspaceInfo workspace = CatalogUtils.localizeWorkspace((WorkspaceInfo) info, catalog); catalog.remove(workspace); // catalog.detach(workspace); // info = CatalogUtils.localizeWorkspace((WorkspaceInfo) info, // catalog); } else if (info instanceof CatalogInfo) { // TODO may we don't want to send this empty message! // TODO check the producer // DO NOTHING if (LOGGER.isLoggable(java.util.logging.Level.WARNING)) { LOGGER.warning("info - ID: " + info.getId() + " toString: " + info.toString()); } } else { throw new IllegalArgumentException("Bad incoming object: " + info.toString()); } } }