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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
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package org.apache.wink.common.internal.providers.entity.app;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.List;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import javax.ws.rs.ext.Providers;
import org.apache.wink.common.annotations.Scope;
import org.apache.wink.common.annotations.Scope.ScopeType;
import org.apache.wink.common.categories.Categories;
import org.apache.wink.common.internal.utils.MediaTypeUtils;
import org.apache.wink.common.model.app.AppCategories;
import org.apache.wink.common.model.app.AppYesNo;
import org.apache.wink.common.model.atom.AtomCategory;
/**
* Representation of Atom Category Document. Category Document is a document
* that describes the categories allowed in a Collection. This provider is used
* when collection resource exposes its categories by implementing
* CollectionCategories interface
*/
@Provider
@Scope(ScopeType.PROTOTYPE)
@Produces(MediaTypeUtils.ATOM_CATEGORIES_DOCUMENT)
public class CategoriesProvider implements MessageBodyWriter<Categories> {
@Context
Providers providers;
// AppCategories serializer
MessageBodyWriter<AppCategories> appCatProvider;
public long getSize(Categories t,
Class<?> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType) {
return -1;
}
public boolean isWriteable(Class<?> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType) {
if (type != Categories.class) {
return false;
}
appCatProvider = providers.getMessageBodyWriter(AppCategories.class, null, null, mediaType);
if (appCatProvider == null || type != Categories.class) {
return false;
}
return true;
}
public void writeTo(Categories categories,
Class<?> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType,
MultivaluedMap<String, Object> httpHeaders,
OutputStream entityStream) throws IOException, WebApplicationException {
AppCategories catDoc = buildAppCatDoc(categories);
appCatProvider.writeTo(catDoc, AppCategories.class, AppCategories.class, annotations, mediaType, httpHeaders, entityStream);
}
private AppCategories buildAppCatDoc(Categories cats) {
AppCategories appCategories = new AppCategories();
List<AtomCategory> categoryList = appCategories.getCategory();
List<AtomCategory> categories = cats.getCategories();
for (AtomCategory cat : categories) {
AtomCategory atomCategory = new AtomCategory();
String catLabel = cat.getLabel();
if (catLabel != null) {
atomCategory.setLabel(catLabel);
}
String catScheme = cat.getScheme();
if (catScheme != null) {
atomCategory.setScheme(catScheme);
}
String catTerm = cat.getTerm();
if (catTerm != null) {
atomCategory.setTerm(catTerm);
}
categoryList.add(atomCategory);
}
String catsScheme = cats.getScheme();
boolean fixed = cats.isFixed();
if (catsScheme != null) {
appCategories.setScheme(catsScheme);
}
if (fixed == true) {
appCategories.setFixed(AppYesNo.YES);
}
return appCategories;
}
}