/*
* Copyright 2010-2012 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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 com.amazonaws.services.dynamodb.model.transform;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.OutputStreamWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.util.Map;
import java.util.List;
import com.amazonaws.AmazonClientException;
import com.amazonaws.Request;
import com.amazonaws.DefaultRequest;
import com.amazonaws.http.HttpMethodName;
import com.amazonaws.services.dynamodb.model.*;
import com.amazonaws.transform.Marshaller;
import com.amazonaws.util.StringUtils;
import com.amazonaws.util.StringInputStream;
import com.amazonaws.util.json.*;
/**
* Batch Get Item Request Marshaller
*/
public class BatchGetItemRequestMarshaller implements Marshaller<Request<BatchGetItemRequest>, BatchGetItemRequest> {
public Request<BatchGetItemRequest> marshall(BatchGetItemRequest batchGetItemRequest) {
if (batchGetItemRequest == null) {
throw new AmazonClientException("Invalid argument passed to marshall(...)");
}
Request<BatchGetItemRequest> request = new DefaultRequest<BatchGetItemRequest>(batchGetItemRequest, "AmazonDynamoDB");
String target = "DynamoDB_20111205.BatchGetItem";
request.addHeader("X-Amz-Target", target);
request.addHeader("Content-Type", "application/x-amz-json-1.0");
request.setHttpMethod(HttpMethodName.POST);
String uriResourcePath = "";
if (uriResourcePath.contains("?")) {
String queryString = uriResourcePath.substring(uriResourcePath.indexOf("?") + 1);
uriResourcePath = uriResourcePath.substring(0, uriResourcePath.indexOf("?"));
for (String s : queryString.split("[;&]")) {
String[] nameValuePair = s.split("=");
if (nameValuePair.length == 2) {
request.addParameter(nameValuePair[0], nameValuePair[1]);
} else {
request.addParameter(s, null);
}
}
}
request.setResourcePath(uriResourcePath);
try {
StringWriter stringWriter = new StringWriter();
JSONWriter jsonWriter = new JSONWriter(stringWriter);
jsonWriter.object();
if (batchGetItemRequest.getRequestItems() != null) {
jsonWriter.key("RequestItems");
jsonWriter.object();
for (Map.Entry<String, KeysAndAttributes> requestItemsListValue : batchGetItemRequest.getRequestItems().entrySet()) {
if (requestItemsListValue.getValue() != null) {
jsonWriter.key(requestItemsListValue.getKey());
jsonWriter.object();
java.util.List<Key> keysList = requestItemsListValue.getValue().getKeys();
if (keysList != null && keysList.size() > 0) {
jsonWriter.key("Keys");
jsonWriter.array();
for (Key keysListValue : keysList) {
jsonWriter.object();
AttributeValue hashKeyElement = keysListValue.getHashKeyElement();
if (hashKeyElement != null) {
jsonWriter.key("HashKeyElement");
jsonWriter.object();
if (hashKeyElement.getS() != null) {
jsonWriter.key("S").value(hashKeyElement.getS());
}
if (hashKeyElement.getN() != null) {
jsonWriter.key("N").value(hashKeyElement.getN());
}
if (hashKeyElement.getB() != null) {
jsonWriter.key("B").value(hashKeyElement.getB());
}
java.util.List<String> sSList = hashKeyElement.getSS();
if (sSList != null && sSList.size() > 0) {
jsonWriter.key("SS");
jsonWriter.array();
for (String sSListValue : sSList) {
jsonWriter.value(sSListValue);
}
jsonWriter.endArray();
}
java.util.List<String> nSList = hashKeyElement.getNS();
if (nSList != null && nSList.size() > 0) {
jsonWriter.key("NS");
jsonWriter.array();
for (String nSListValue : nSList) {
jsonWriter.value(nSListValue);
}
jsonWriter.endArray();
}
java.util.List<java.nio.ByteBuffer> bSList = hashKeyElement.getBS();
if (bSList != null && bSList.size() > 0) {
jsonWriter.key("BS");
jsonWriter.array();
for (java.nio.ByteBuffer bSListValue : bSList) {
jsonWriter.value(bSListValue);
}
jsonWriter.endArray();
}
jsonWriter.endObject();
}
AttributeValue rangeKeyElement = keysListValue.getRangeKeyElement();
if (rangeKeyElement != null) {
jsonWriter.key("RangeKeyElement");
jsonWriter.object();
if (rangeKeyElement.getS() != null) {
jsonWriter.key("S").value(rangeKeyElement.getS());
}
if (rangeKeyElement.getN() != null) {
jsonWriter.key("N").value(rangeKeyElement.getN());
}
if (rangeKeyElement.getB() != null) {
jsonWriter.key("B").value(rangeKeyElement.getB());
}
java.util.List<String> sSList = rangeKeyElement.getSS();
if (sSList != null && sSList.size() > 0) {
jsonWriter.key("SS");
jsonWriter.array();
for (String sSListValue : sSList) {
jsonWriter.value(sSListValue);
}
jsonWriter.endArray();
}
java.util.List<String> nSList = rangeKeyElement.getNS();
if (nSList != null && nSList.size() > 0) {
jsonWriter.key("NS");
jsonWriter.array();
for (String nSListValue : nSList) {
jsonWriter.value(nSListValue);
}
jsonWriter.endArray();
}
java.util.List<java.nio.ByteBuffer> bSList = rangeKeyElement.getBS();
if (bSList != null && bSList.size() > 0) {
jsonWriter.key("BS");
jsonWriter.array();
for (java.nio.ByteBuffer bSListValue : bSList) {
jsonWriter.value(bSListValue);
}
jsonWriter.endArray();
}
jsonWriter.endObject();
}
jsonWriter.endObject();
}
jsonWriter.endArray();
}
java.util.List<String> attributesToGetList = requestItemsListValue.getValue().getAttributesToGet();
if (attributesToGetList != null && attributesToGetList.size() > 0) {
jsonWriter.key("AttributesToGet");
jsonWriter.array();
for (String attributesToGetListValue : attributesToGetList) {
jsonWriter.value(attributesToGetListValue);
}
jsonWriter.endArray();
}
jsonWriter.endObject();
}
}
jsonWriter.endObject();
}
jsonWriter.endObject();
String snippet = stringWriter.toString();
byte[] content = snippet.getBytes("UTF-8");
request.setContent(new StringInputStream(snippet));
request.addHeader("Content-Length", Integer.toString(content.length));
} catch(Throwable t) {
throw new AmazonClientException("Unable to marshall request to JSON: " + t.getMessage(), t);
}
return request;
}
private String getString(String s) {
if (s == null) return "";
return s;
}
}