/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file 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 under the License.
*/
package org.apache.lenya.modules.lucene;
import java.util.Map;
import org.apache.cocoon.environment.ObjectModelHelper;
import org.apache.cocoon.environment.Request;
import org.apache.lenya.cms.metadata.MetaDataRegistry;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.TermQuery;
/**
* Same as {@link QueryStringModule}, but searches only for images.
* If the <em>queryString</em> request parameter is empty, all images are shown.
*/
public class ImageQueryStringModule extends QueryStringModule {
protected static final String DOCUMENT_METADATA_NAMESPACE = "http://apache.org/lenya/metadata/document/1.0";
protected String getQueryString(Map objectModel) {
Request request = ObjectModelHelper.getRequest(objectModel);
String searchTerm = request.getParameter(PARAM_QUERY_STRING);
if (searchTerm != null && searchTerm.indexOf(' ') > -1) {
searchTerm = "(" + searchTerm + ")";
}
BooleanQuery query = getQuery(searchTerm);
return query.toString();
}
protected BooleanQuery getQuery(String searchTerm) {
BooleanQuery query = new BooleanQuery();
if (!isEmpty(searchTerm)) {
query.add(super.getQuery(searchTerm), true, false);
}
MetaDataRegistry registry = null;
MetaDataFieldRegistry fieldRegistry = null;
try {
registry = (MetaDataRegistry) this.manager.lookup(MetaDataRegistry.ROLE);
fieldRegistry = (MetaDataFieldRegistry) this.manager.lookup(MetaDataFieldRegistry.ROLE);
String typeField = fieldRegistry.getFieldName(DOCUMENT_METADATA_NAMESPACE, "resourceType");
Term typeTerm = getTerm(typeField, "resource");
query.add(new TermQuery(typeTerm), true, false);
String mimeTypeField = fieldRegistry.getFieldName(DOCUMENT_METADATA_NAMESPACE, "mimeType");
Term mimeTypeTerm = getTerm(mimeTypeField, "image*");
query.add(new TermQuery(mimeTypeTerm), true, false);
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
if (registry != null) {
this.manager.release(registry);
}
if (fieldRegistry != null) {
this.manager.release(fieldRegistry);
}
}
return query;
}
}