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1
11 package org.eclipse.pde.internal.core.schema;
12
13 import java.io.File  ;
14 import java.net.MalformedURLException ;
15 import java.net.URL ;
16 import java.util.HashMap ;
17
18 import org.eclipse.core.runtime.IPath;
19 import org.eclipse.core.runtime.Path;
20 import org.eclipse.pde.core.plugin.IFragment;
21 import org.eclipse.pde.core.plugin.IFragmentModel;
22 import org.eclipse.pde.core.plugin.IPluginBase;
23 import org.eclipse.pde.core.plugin.IPluginExtensionPoint;
24 import org.eclipse.pde.core.plugin.IPluginModelBase;
25 import org.eclipse.pde.core.plugin.ModelEntry;
26 import org.eclipse.pde.core.plugin.PluginRegistry;
27 import org.eclipse.pde.internal.core.PDECore;
28 import org.eclipse.pde.internal.core.PDEStateHelper;
29 import org.eclipse.pde.internal.core.SourceLocationManager;
30 import org.eclipse.pde.internal.core.ischema.ISchema;
31 import org.eclipse.pde.internal.core.ischema.ISchemaDescriptor;
32 import org.eclipse.pde.internal.core.text.plugin.PluginExtensionPointNode;
33 import org.eclipse.pde.internal.core.util.CoreUtility;
34
35
36 public class SchemaRegistry {
37
38 private HashMap fRegistry = new HashMap ();
39
40 public ISchema getSchema(String extPointID) {
41 IPluginExtensionPoint point = PDEStateHelper.findExtensionPoint(extPointID);
42 if (point == null) {
43 if (fRegistry.containsKey(extPointID))
45 fRegistry.remove(extPointID);
46 return null;
47 }
48
49 URL url = getSchemaURL(point);
50 if (url == null)
51 return null;
52
53 ISchemaDescriptor desc = getExistingDescriptor(extPointID, url);
54 if (desc == null) {
55 desc = new SchemaDescriptor(extPointID, url);
56 fRegistry.put(extPointID, desc);
57 }
58
59 return (desc == null) ? null : desc.getSchema(true);
60 }
61
62 public ISchema getIncludedSchema(ISchemaDescriptor parent, String schemaLocation) {
63 try {
64 URL url = IncludedSchemaDescriptor.computeURL(parent, schemaLocation);
65 if (url == null)
66 return null;
67
68 ISchemaDescriptor desc = getExistingDescriptor(url.toString(), url);
69 if (desc == null) {
70 desc = new IncludedSchemaDescriptor(url);
71 fRegistry.put(url.toString(), desc);
72 }
73 return desc.getSchema(true);
74 } catch (MalformedURLException e) {
75 }
76 return null;
77 }
78
79 private ISchemaDescriptor getExistingDescriptor(String key, URL url) {
80 ISchemaDescriptor desc = null;
81 if (fRegistry.containsKey(key)) {
82 desc = (ISchemaDescriptor)fRegistry.get(key);
83 if (hasSchemaChanged(desc, url))
84 desc = null;
85 }
86 return desc;
87 }
88
89 public static URL getSchemaURL(IPluginExtensionPoint point,
90 IPluginModelBase base) {
91 URL url = getSchemaURL(point);
92 if (url != null) {
93 return url;
94 }
95 String schema = point.getSchema();
96 if ((schema == null) ||
97 (schema.trim().length() == 0)) {
98 return null;
99 }
100 return getSchemaURL(getId(point, base), schema);
101 }
102
103 public static URL getSchemaURL(IPluginExtensionPoint point) {
104 String schema = point.getSchema();
105 if (schema == null || schema.trim().length() == 0)
106 return null;
107
108 IPluginModelBase model = point.getPluginModel();
109 URL url = getSchemaURL(model.getPluginBase().getId(), schema);
110 if (url == null)
111 url = getSchemaFromSourceExtension(point.getPluginBase(), new Path(schema));
112 return url;
113 }
114
115 public static URL getSchemaFromSourceExtension(IPluginBase plugin, IPath path) {
116 SourceLocationManager mgr = PDECore.getDefault().getSourceLocationManager();
117 File file = mgr.findSourceFile(plugin, path);
118 try {
119 if (file != null && file.exists() && file.isFile())
120 return file.toURL();
121 } catch (MalformedURLException e) {
122 }
123 return null;
124 }
125
126 public static URL getSchemaURL(String pluginID, String schema) {
127 if (pluginID == null)
128 return null;
129
130 URL url = null;
131 ModelEntry entry = PluginRegistry.findEntry(pluginID);
132 if (entry != null) {
133 IPluginModelBase[] models = entry.getWorkspaceModels();
134 for (int i = 0; i < models.length; i++) {
135 url = getSchemaURL(models[i], schema);
136 if (url != null)
137 break;
138 }
139 if (url == null) {
140 models = entry.getExternalModels();
141 for (int i = 0; i < models.length; i++) {
142 url = getSchemaURL(models[i], schema);
143 if (url != null)
144 break;
145 }
146 }
147 }
148 return url;
149 }
150
151 private static URL getSchemaURL(IPluginModelBase model, String schema) {
152 try {
153 if (model == null)
154 return null;
155
156 String location = model.getInstallLocation();
157 if (location == null)
158 return null;
159
160 File file = new File (location);
161 if (file.isDirectory()) {
162 File schemaFile = new File (file, schema);
163 if (schemaFile.exists())
164 return schemaFile.toURL();
165 } else if (CoreUtility.jarContainsResource(file, schema, false)) { return new URL ("jar:file:" + file.getAbsolutePath() + "!/" + schema); }
168 } catch (MalformedURLException e) {
169 }
170 return null;
171 }
172
173 private boolean hasSchemaChanged(ISchemaDescriptor desc, URL url) {
174 if (!desc.getSchemaURL().equals(url))
175 return true;
176 File file = new File (url.getFile());
177 return (desc.getLastModified() != file.lastModified());
178 }
179
180 public void shutdown() {
181 fRegistry.clear();
182 }
183
184 private static String getId(IPluginExtensionPoint point, IPluginModelBase base) {
185 String id = null;
186 if (point instanceof PluginExtensionPointNode) {
187 if (base instanceof IFragmentModel) {
188 IFragment fragment = ((IFragmentModel)base).getFragment();
189 if (fragment != null) {
190 id = fragment.getPluginId();
191 }
192 }
193 if (id == null) {
194 id = base.getPluginBase().getId();
195 }
196 }
197 return id;
198 }
199
200 }
201 |
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