Package org.apache.camel.component.aws.ddb

Source Code of org.apache.camel.component.aws.ddb.BatchGetItemsCommand

/**
* 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 java.util.Map;

import com.amazonaws.services.dynamodb.AmazonDynamoDB;
import com.amazonaws.services.dynamodb.model.BatchGetItemRequest;
import com.amazonaws.services.dynamodb.model.BatchGetItemResult;
import com.amazonaws.services.dynamodb.model.KeysAndAttributes;

import org.apache.camel.Exchange;

public class BatchGetItemsCommand extends AbstractDdbCommand {
    public BatchGetItemsCommand(AmazonDynamoDB ddbClient, DdbConfiguration configuration, Exchange exchange) {
        super(ddbClient, configuration, exchange);
    }

    @Override
    public void execute() {
        BatchGetItemResult result = ddbClient.batchGetItem(
                new BatchGetItemRequest().withRequestItems(determineBatchItems()));

        addToResult(DdbConstants.BATCH_RESPONSE, result.getResponses());
        addToResult(DdbConstants.UNPROCESSED_KEYS, result.getUnprocessedKeys());
    }

    @SuppressWarnings("unchecked")
    private Map<String, KeysAndAttributes> determineBatchItems() {
        return exchange.getIn().getHeader(DdbConstants.BATCH_ITEMS, Map.class);
    }
}
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