/*
* Copyright 2004 Sun Microsystems, Inc.
*
* 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 com.rometools.rome.io.impl;
import java.util.List;
import java.util.Locale;
import org.jdom2.Element;
import org.jdom2.Namespace;
import com.rometools.rome.feed.module.Module;
import com.rometools.rome.io.ModuleParser;
import com.rometools.rome.io.WireFeedParser;
import com.rometools.utils.Lists;
/**
*/
public class ModuleParsers extends PluginManager<ModuleParser> {
public ModuleParsers(final String propertyKey, final WireFeedParser parentParser) {
super(propertyKey, parentParser, null);
}
@Override
public String getKey(final ModuleParser obj) {
return obj.getNamespaceUri();
}
public List<String> getModuleNamespaces() {
return getKeys();
}
public List<Module> parseModules(final Element root, final Locale locale) {
final List<ModuleParser> parsers = getPlugins();
List<Module> modules = null;
for (final ModuleParser parser : parsers) {
final String namespaceUri = parser.getNamespaceUri();
final Namespace namespace = Namespace.getNamespace(namespaceUri);
if (hasElementsFrom(root, namespace)) {
final Module module = parser.parse(root, locale);
if (module != null) {
modules = Lists.createWhenNull(modules);
modules.add(module);
}
}
}
return modules;
}
private boolean hasElementsFrom(final Element root, final Namespace namespace) {
boolean hasElements = false;
for (final Element child : root.getChildren()) {
final Namespace childNamespace = child.getNamespace();
if (namespace.equals(childNamespace)) {
hasElements = true;
break;
}
}
return hasElements;
}
}