/**
* Copyright T Jake Luciani
*
* 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 solandra;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import org.apache.cassandra.utils.ByteBufferUtil;
import org.apache.log4j.Logger;
import org.apache.lucene.document.FieldSelector;
import org.apache.solr.handler.component.ResponseBuilder;
import org.apache.solr.handler.component.SearchComponent;
import org.apache.solr.highlight.SolrHighlighter;
import org.apache.solr.schema.SchemaField;
import org.apache.solr.search.DocIterator;
import org.apache.solr.search.DocList;
public class SolandraQueryComponent extends SearchComponent
{
private static final Logger logger = Logger.getLogger(SolandraComponent.class);
@Override
public void prepare(ResponseBuilder rb) throws IOException
{
SolandraComponent.prepare(rb);
}
@Override
public void process(ResponseBuilder rb) throws IOException
{
DocList list = rb.getResults().docList;
DocIterator it = list.iterator();
List<Integer> docIds = new ArrayList<Integer>(list.size());
while (it.hasNext())
docIds.add(it.next());
if(logger.isDebugEnabled())
logger.debug("Fetching " + docIds.size() + " Docs");
if (docIds.size() > 0)
{
List<ByteBuffer> fieldFilter = null;
Set<String> returnFields = rb.rsp.getReturnFields();
if (returnFields != null)
{
// copy return fields list
fieldFilter = new ArrayList<ByteBuffer>(returnFields.size());
for (String field : returnFields)
{
fieldFilter.add(ByteBufferUtil.bytes(field));
}
// add highlight fields
SolrHighlighter highligher = rb.req.getCore().getHighlighter();
if (highligher.isHighlightingEnabled(rb.req.getParams()))
{
for (String field : highligher.getHighlightFields(rb.getQuery(), rb.req, null))
if (!returnFields.contains(field))
fieldFilter.add(ByteBufferUtil.bytes(field));
}
// fetch unique key if one exists.
SchemaField keyField = rb.req.getSearcher().getSchema().getUniqueKeyField();
if (null != keyField)
if (!returnFields.contains(keyField))
fieldFilter.add(ByteBufferUtil.bytes(keyField.getName()));
}
FieldSelector selector = new SolandraFieldSelector(docIds, fieldFilter);
//This will bulk load these docs
rb.req.getSearcher().getReader().document(docIds.get(0), selector);
}
}
public String getDescription()
{
return "Solandra Query Component";
}
public String getSource()
{
return null;
}
public String getSourceId()
{
return null;
}
public String getVersion()
{
return "1.0";
}
}