01: /*
02: * Copyright 2004 Sun Microsystems, Inc.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: *
16: */
17: package com.sun.syndication.io.impl;
18:
19: import com.sun.syndication.feed.module.Module;
20: import com.sun.syndication.io.ModuleParser;
21: import com.sun.syndication.io.WireFeedParser;
22: import org.jdom.Element;
23: import org.jdom.Namespace;
24:
25: import java.util.ArrayList;
26: import java.util.List;
27:
28: /**
29: */
30: public class ModuleParsers extends PluginManager {
31: public ModuleParsers(String propertyKey, WireFeedParser parentParser) {
32: super (propertyKey, parentParser, null);
33: }
34:
35: public String getKey(Object obj) {
36: return ((ModuleParser) obj).getNamespaceUri();
37: }
38:
39: public List getModuleNamespaces() {
40: return getKeys();
41: }
42:
43: public List parseModules(Element root) {
44: List parsers = getPlugins();
45: List modules = null;
46: for (int i = 0; i < parsers.size(); i++) {
47: ModuleParser parser = (ModuleParser) parsers.get(i);
48: String namespaceUri = parser.getNamespaceUri();
49: Namespace namespace = Namespace.getNamespace(namespaceUri);
50: if (hasElementsFrom(root, namespace)) {
51: Module module = parser.parse(root);
52: if (module != null) {
53: if (modules == null) {
54: modules = new ArrayList();
55: }
56: modules.add(module);
57: }
58: }
59: }
60: return modules;
61: }
62:
63: private boolean hasElementsFrom(Element root, Namespace namespace) {
64: boolean hasElements = false;
65: // boolean hasElements = namespace.equals(root.getNamespace());
66:
67: if (!hasElements) {
68: List children = root.getChildren();
69: for (int i = 0; !hasElements && i < children.size(); i++) {
70: Element child = (Element) children.get(i);
71: hasElements = namespace.equals(child.getNamespace());
72: }
73: }
74: return hasElements;
75: }
76: }
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