Source Code Cross Referenced for MutableComponentModelImpl.java in  » Library » Tapestry » org » apache » tapestry » internal » model » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Library » Tapestry » org.apache.tapestry.internal.model 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        // Copyright 2006, 2007 The Apache Software Foundation
002:        //
003:        // Licensed under the Apache License, Version 2.0 (the "License");
004:        // you may not use this file except in compliance with the License.
005:        // You may obtain a copy of the License at
006:        //
007:        //     http://www.apache.org/licenses/LICENSE-2.0
008:        //
009:        // Unless required by applicable law or agreed to in writing, software
010:        // distributed under the License is distributed on an "AS IS" BASIS,
011:        // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012:        // See the License for the specific language governing permissions and
013:        // limitations under the License.
014:
015:        package org.apache.tapestry.internal.model;
016:
017:        import static org.apache.tapestry.ioc.internal.util.CollectionFactory.newCaseInsensitiveMap;
018:        import static org.apache.tapestry.ioc.internal.util.CollectionFactory.newList;
019:        import static org.apache.tapestry.ioc.internal.util.CollectionFactory.newMap;
020:        import static org.apache.tapestry.ioc.internal.util.Defense.notBlank;
021:
022:        import java.util.Collections;
023:        import java.util.List;
024:        import java.util.Map;
025:
026:        import org.apache.commons.logging.Log;
027:        import org.apache.tapestry.ioc.Location;
028:        import org.apache.tapestry.ioc.Resource;
029:        import org.apache.tapestry.ioc.internal.util.IdAllocator;
030:        import org.apache.tapestry.ioc.internal.util.InternalUtils;
031:        import org.apache.tapestry.model.ComponentModel;
032:        import org.apache.tapestry.model.EmbeddedComponentModel;
033:        import org.apache.tapestry.model.MutableComponentModel;
034:        import org.apache.tapestry.model.MutableEmbeddedComponentModel;
035:        import org.apache.tapestry.model.ParameterModel;
036:
037:        /**
038:         * Internal implementation of {@link org.apache.tapestry.model.MutableComponentModel}.
039:         */
040:        public final class MutableComponentModelImpl implements 
041:                MutableComponentModel {
042:            private final ComponentModel _parentModel;
043:
044:            private final Resource _baseResource;
045:
046:            private final String _componentClassName;
047:
048:            private final IdAllocator _persistentFieldNameAllocator = new IdAllocator();
049:
050:            private final Log _log;
051:
052:            private Map<String, ParameterModel> _parameters;
053:
054:            private Map<String, EmbeddedComponentModel> _embeddedComponents;
055:
056:            /** Maps from field name to strategy. */
057:            private Map<String, String> _persistentFields;
058:
059:            private List<String> _mixinClassNames;
060:
061:            private boolean _informalParametersSupported;
062:
063:            private boolean _mixinAfter;
064:
065:            private Map<String, String> _metaData;
066:
067:            public MutableComponentModelImpl(String componentClassName,
068:                    Log log, Resource baseResource, ComponentModel parentModel) {
069:                _componentClassName = componentClassName;
070:                _log = log;
071:                _baseResource = baseResource;
072:                _parentModel = parentModel;
073:
074:                // Pre-allocate names from the parent, to avoid name collisions.
075:
076:                if (_parentModel != null) {
077:                    for (String name : _parentModel.getPersistentFieldNames()) {
078:                        _persistentFieldNameAllocator.allocateId(name);
079:                    }
080:                }
081:            }
082:
083:            @Override
084:            public String toString() {
085:                return String.format("ComponentModel[%s]", _componentClassName);
086:            }
087:
088:            public Log getLog() {
089:                return _log;
090:            }
091:
092:            public Resource getBaseResource() {
093:                return _baseResource;
094:            }
095:
096:            public String getComponentClassName() {
097:                return _componentClassName;
098:            }
099:
100:            public void addParameter(String name, boolean required,
101:                    String defaultBindingPrefix) {
102:                notBlank(name, "name");
103:                notBlank(defaultBindingPrefix, "defaultBindingPrefix");
104:
105:                // TODO: Check for conflict with base model
106:
107:                if (_parameters == null)
108:                    _parameters = newCaseInsensitiveMap();
109:                else {
110:                    if (_parameters.containsKey(name))
111:                        throw new IllegalArgumentException(ModelMessages
112:                                .duplicateParameter(name, _componentClassName));
113:                }
114:
115:                _parameters.put(name, new ParameterModelImpl(name, required,
116:                        defaultBindingPrefix));
117:            }
118:
119:            public ParameterModel getParameterModel(String parameterName) {
120:                ParameterModel result = InternalUtils.get(_parameters,
121:                        parameterName.toLowerCase());
122:
123:                if (result == null && _parentModel != null)
124:                    result = _parentModel.getParameterModel(parameterName);
125:
126:                return result;
127:            }
128:
129:            public List<String> getParameterNames() {
130:                List<String> names = newList();
131:
132:                if (_parameters != null)
133:                    names.addAll(_parameters.keySet());
134:
135:                if (_parentModel != null)
136:                    names.addAll(_parentModel.getParameterNames());
137:
138:                Collections.sort(names);
139:
140:                return names;
141:            }
142:
143:            public List<String> getDeclaredParameterNames() {
144:                return InternalUtils.sortedKeys(_parameters);
145:            }
146:
147:            public MutableEmbeddedComponentModel addEmbeddedComponent(
148:                    String id, String type, String componentClassName,
149:                    Location location) {
150:                // TODO: Parent compent model? Or would we simply override the parent?
151:
152:                if (_embeddedComponents == null)
153:                    _embeddedComponents = newCaseInsensitiveMap();
154:                else if (_embeddedComponents.containsKey(id))
155:                    throw new IllegalArgumentException(ModelMessages
156:                            .duplicateComponentId(id, _componentClassName));
157:
158:                MutableEmbeddedComponentModel embedded = new MutableEmbeddedComponentModelImpl(
159:                        id, type, componentClassName, _componentClassName,
160:                        location);
161:
162:                _embeddedComponents.put(id, embedded);
163:
164:                return embedded; // So that parameters can be filled in
165:            }
166:
167:            public List<String> getEmbeddedComponentIds() {
168:                List<String> result = newList();
169:
170:                if (_embeddedComponents != null)
171:                    result.addAll(_embeddedComponents.keySet());
172:
173:                if (_parentModel != null)
174:                    result.addAll(_parentModel.getEmbeddedComponentIds());
175:
176:                Collections.sort(result);
177:
178:                return result;
179:            }
180:
181:            public EmbeddedComponentModel getEmbeddedComponentModel(
182:                    String componentId) {
183:                EmbeddedComponentModel result = InternalUtils.get(
184:                        _embeddedComponents, componentId);
185:
186:                if (result == null && _parentModel != null)
187:                    result = _parentModel
188:                            .getEmbeddedComponentModel(componentId);
189:
190:                return result;
191:            }
192:
193:            public String getFieldPersistenceStrategy(String fieldName) {
194:                String result = InternalUtils.get(_persistentFields, fieldName);
195:
196:                if (result == null && _parentModel != null)
197:                    result = _parentModel
198:                            .getFieldPersistenceStrategy(fieldName);
199:
200:                if (result == null)
201:                    throw new IllegalArgumentException(ModelMessages
202:                            .missingPersistentField(fieldName));
203:
204:                return result;
205:            }
206:
207:            public List<String> getPersistentFieldNames() {
208:                return _persistentFieldNameAllocator.getAllocatedIds();
209:            }
210:
211:            public String setFieldPersistenceStrategy(String fieldName,
212:                    String strategy) {
213:                String stripped = InternalUtils.stripMemberPrefix(fieldName);
214:
215:                String logicalFieldName = _persistentFieldNameAllocator
216:                        .allocateId(stripped);
217:
218:                if (_persistentFields == null)
219:                    _persistentFields = newMap();
220:
221:                _persistentFields.put(logicalFieldName, strategy);
222:
223:                return logicalFieldName;
224:            }
225:
226:            public boolean isRootClass() {
227:                return _parentModel == null;
228:            }
229:
230:            public void addMixinClassName(String mixinClassName) {
231:                if (_mixinClassNames == null)
232:                    _mixinClassNames = newList();
233:
234:                _mixinClassNames.add(mixinClassName);
235:            }
236:
237:            public List<String> getMixinClassNames() {
238:                List<String> result = newList();
239:
240:                if (_mixinClassNames != null)
241:                    result.addAll(_mixinClassNames);
242:
243:                if (_parentModel != null)
244:                    result.addAll(_parentModel.getMixinClassNames());
245:
246:                Collections.sort(result);
247:
248:                return result;
249:            }
250:
251:            public void enableSupportsInformalParameters() {
252:                _informalParametersSupported = true;
253:            }
254:
255:            public boolean getSupportsInformalParameters() {
256:                return _informalParametersSupported;
257:            }
258:
259:            public ComponentModel getParentModel() {
260:                return _parentModel;
261:            }
262:
263:            public boolean isMixinAfter() {
264:                return _mixinAfter;
265:            }
266:
267:            public void setMixinAfter(boolean mixinAfter) {
268:                _mixinAfter = mixinAfter;
269:            }
270:
271:            public void setMeta(String key, String value) {
272:                notBlank(key, "key");
273:                notBlank(value, "value");
274:
275:                if (_metaData == null)
276:                    _metaData = newCaseInsensitiveMap();
277:
278:                // TODO: Error if duplicate?
279:
280:                _metaData.put(key, value);
281:            }
282:
283:            public String getMeta(String key) {
284:                String result = InternalUtils.get(_metaData, key);
285:
286:                if (result == null && _parentModel != null)
287:                    result = _parentModel.getMeta(key);
288:
289:                return result;
290:            }
291:
292:        }
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