/**
* 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.ddb;
import com.amazonaws.services.dynamodb.AmazonDynamoDB;
import com.amazonaws.services.dynamodb.model.AttributeValue;
import com.amazonaws.services.dynamodb.model.Condition;
import com.amazonaws.services.dynamodb.model.Key;
import com.amazonaws.services.dynamodb.model.QueryRequest;
import com.amazonaws.services.dynamodb.model.QueryResult;
import org.apache.camel.Exchange;
public class QueryCommand extends AbstractDdbCommand {
public QueryCommand(AmazonDynamoDB ddbClient, DdbConfiguration configuration, Exchange exchange) {
super(ddbClient, configuration, exchange);
}
@Override
public void execute() {
QueryResult result = ddbClient.query(new QueryRequest()
.withTableName(determineTableName())
.withAttributesToGet(determineAttributeNames())
.withCount(determineExactCount())
.withConsistentRead(determineConsistentRead())
.withExclusiveStartKey(determineStartKey())
.withHashKeyValue(determineHashKeyValue())
.withLimit(determineLimit())
.withRangeKeyCondition(determineRangeKeyCondition())
.withScanIndexForward(determineScanIndexForward()));
addToResult(DdbConstants.ITEMS, result.getItems());
addToResult(DdbConstants.LAST_EVALUATED_KEY, result.getLastEvaluatedKey());
addToResult(DdbConstants.CONSUMED_CAPACITY, result.getConsumedCapacityUnits());
addToResult(DdbConstants.COUNT, result.getCount());
}
private Key determineStartKey() {
return exchange.getIn().getHeader(DdbConstants.START_KEY, Key.class);
}
private Boolean determineScanIndexForward() {
return exchange.getIn().getHeader(DdbConstants.SCAN_INDEX_FORWARD, Boolean.class);
}
private Condition determineRangeKeyCondition() {
return exchange.getIn().getHeader(DdbConstants.SCAN_RANGE_KEY_CONDITION, Condition.class);
}
private Integer determineLimit() {
return exchange.getIn().getHeader(DdbConstants.LIMIT, Integer.class);
}
private AttributeValue determineHashKeyValue() {
return exchange.getIn().getHeader(DdbConstants.HASH_KEY_VALUE, AttributeValue.class);
}
private Boolean determineExactCount() {
return exchange.getIn().getHeader(DdbConstants.EXACT_COUNT, Boolean.class);
}
}