/*
* 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.geode.internal.cache.tier.sockets.command;
import java.io.IOException;
import java.util.List;
import java.util.Set;
import org.apache.geode.cache.operations.QueryOperationContext;
import org.apache.geode.cache.query.QueryExecutionLowMemoryException;
import org.apache.geode.cache.query.QueryInvalidException;
import org.apache.geode.cache.query.QueryService;
import org.apache.geode.cache.query.SelectResults;
import org.apache.geode.cache.query.internal.DefaultQuery;
import org.apache.geode.cache.query.internal.types.CollectionTypeImpl;
import org.apache.geode.cache.query.types.CollectionType;
import org.apache.geode.internal.cache.GemFireCacheImpl;
import org.apache.geode.internal.cache.tier.Command;
import org.apache.geode.internal.cache.tier.sockets.BaseCommandQuery;
import org.apache.geode.internal.cache.tier.sockets.Message;
import org.apache.geode.internal.cache.tier.sockets.ServerConnection;
import org.apache.geode.internal.security.AuthorizeRequest;
public class Query extends BaseCommandQuery {
private final static Query singleton = new Query();
public static Command getCommand() {
return singleton;
}
protected Query() {}
@Override
public void cmdExecute(Message msg, ServerConnection servConn, long start)
throws IOException, InterruptedException {
// Based on MessageType.DESTROY
// Added by gregp 10/18/05
servConn.setAsTrue(REQUIRES_RESPONSE);
servConn.setAsTrue(REQUIRES_CHUNKED_RESPONSE);
// Retrieve the data from the message parts
String queryString = msg.getPart(0).getString();
// this is optional part for message specific timeout, which right now send by native client
// need to take care while adding new message
if (msg.getNumberOfParts() == 3) {
int timeout = msg.getPart(2).getInt();
servConn.setRequestSpecificTimeout(timeout);
}
if (logger.isDebugEnabled()) {
logger.debug("{}: Received query request from {} queryString: {}", servConn.getName(),
servConn.getSocketString(), queryString);
}
try {
// Create query
QueryService queryService =
((GemFireCacheImpl) servConn.getCachedRegionHelper().getCache()).getLocalQueryService();
org.apache.geode.cache.query.Query query = queryService.newQuery(queryString);
Set regionNames = ((DefaultQuery) query).getRegionsInQuery(null);
// Authorization check
QueryOperationContext queryContext = null;
AuthorizeRequest authzRequest = servConn.getAuthzRequest();
if (authzRequest != null) {
queryContext = authzRequest.queryAuthorize(queryString, regionNames);
String newQueryString = queryContext.getQuery();
if (queryString != null && !queryString.equals(newQueryString)) {
query = queryService.newQuery(newQueryString);
queryString = newQueryString;
regionNames = queryContext.getRegionNames();
if (regionNames == null) {
regionNames = ((DefaultQuery) query).getRegionsInQuery(null);
}
}
}
processQuery(msg, query, queryString, regionNames, start, null, queryContext, servConn, true);
} catch (QueryInvalidException e) {
throw new QueryInvalidException(e.getMessage() + queryString);
} catch (QueryExecutionLowMemoryException e) {
writeQueryResponseException(msg, e, false, servConn);
}
}
protected CollectionType getCollectionType(SelectResults selectResults) {
return new CollectionTypeImpl(List.class, selectResults.getCollectionType().getElementType());
}
}