/**
* 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.camel.component.aws.sdb;
import com.amazonaws.services.simpledb.AmazonSimpleDB;
import com.amazonaws.services.simpledb.model.SelectRequest;
import com.amazonaws.services.simpledb.model.SelectResult;
import org.apache.camel.Exchange;
import org.apache.camel.Message;
public class SelectCommand extends AbstractSdbCommand {
public SelectCommand(AmazonSimpleDB sdbClient, SdbConfiguration configuration, Exchange exchange) {
super(sdbClient, configuration, exchange);
}
public void execute() {
SelectRequest request = new SelectRequest()
.withSelectExpression(determineSelectExpression())
.withConsistentRead(determineConsistentRead())
.withNextToken(determineNextToken());
log.trace("Sending request [{}] for exchange [{}]...", request, exchange);
SelectResult result = this.sdbClient.select(request);
log.trace("Received result [{}]", result);
Message msg = getMessageForResponse(exchange);
msg.setHeader(SdbConstants.ITEMS, result.getItems());
msg.setHeader(SdbConstants.NEXT_TOKEN, result.getNextToken());
}
protected String determineSelectExpression() {
return exchange.getIn().getHeader(SdbConstants.SELECT_EXPRESSION, String.class);
}
}