/*
* Copyright 2010-2016 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.dynamodbv2.model.transform;
import static com.amazonaws.util.StringUtils.UTF8;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.OutputStreamWriter;
import java.io.StringWriter;
import java.io.Writer;
import com.amazonaws.AmazonClientException;
import com.amazonaws.Request;
import com.amazonaws.DefaultRequest;
import com.amazonaws.http.HttpMethodName;
import com.amazonaws.services.dynamodbv2.model.*;
import com.amazonaws.transform.Marshaller;
import com.amazonaws.util.BinaryUtils;
import com.amazonaws.util.StringUtils;
import com.amazonaws.util.StringInputStream;
import com.amazonaws.util.json.AwsJsonWriter;
import com.amazonaws.util.json.JsonUtils;
/**
* JSON request marshaller for UpdateItemRequest
*/
public class UpdateItemRequestMarshaller implements
Marshaller<Request<UpdateItemRequest>, UpdateItemRequest> {
public Request<UpdateItemRequest> marshall(UpdateItemRequest updateItemRequest) {
if (updateItemRequest == null) {
throw new AmazonClientException(
"Invalid argument passed to marshall(UpdateItemRequest)");
}
Request<UpdateItemRequest> request = new DefaultRequest<UpdateItemRequest>(
updateItemRequest, "AmazonDynamoDB");
String target = "DynamoDB_20120810.UpdateItem";
request.addHeader("X-Amz-Target", target);
request.setHttpMethod(HttpMethodName.POST);
String uriResourcePath = "/";
request.setResourcePath(uriResourcePath);
try {
StringWriter stringWriter = new StringWriter();
AwsJsonWriter jsonWriter = JsonUtils.getJsonWriter(stringWriter);
jsonWriter.beginObject();
if (updateItemRequest.getTableName() != null) {
String tableName = updateItemRequest.getTableName();
jsonWriter.name("TableName");
jsonWriter.value(tableName);
}
if (updateItemRequest.getKey() != null) {
java.util.Map<String, AttributeValue> key = updateItemRequest.getKey();
jsonWriter.name("Key");
jsonWriter.beginObject();
for (java.util.Map.Entry<String, AttributeValue> keyEntry : key.entrySet()) {
AttributeValue keyValue = keyEntry.getValue();
if (keyValue != null) {
jsonWriter.name(keyEntry.getKey());
AttributeValueJsonMarshaller.getInstance().marshall(keyValue, jsonWriter);
}
}
jsonWriter.endObject();
}
if (updateItemRequest.getAttributeUpdates() != null) {
java.util.Map<String, AttributeValueUpdate> attributeUpdates = updateItemRequest
.getAttributeUpdates();
jsonWriter.name("AttributeUpdates");
jsonWriter.beginObject();
for (java.util.Map.Entry<String, AttributeValueUpdate> attributeUpdatesEntry : attributeUpdates
.entrySet()) {
AttributeValueUpdate attributeUpdatesValue = attributeUpdatesEntry.getValue();
if (attributeUpdatesValue != null) {
jsonWriter.name(attributeUpdatesEntry.getKey());
AttributeValueUpdateJsonMarshaller.getInstance().marshall(
attributeUpdatesValue, jsonWriter);
}
}
jsonWriter.endObject();
}
if (updateItemRequest.getExpected() != null) {
java.util.Map<String, ExpectedAttributeValue> expected = updateItemRequest
.getExpected();
jsonWriter.name("Expected");
jsonWriter.beginObject();
for (java.util.Map.Entry<String, ExpectedAttributeValue> expectedEntry : expected
.entrySet()) {
ExpectedAttributeValue expectedValue = expectedEntry.getValue();
if (expectedValue != null) {
jsonWriter.name(expectedEntry.getKey());
ExpectedAttributeValueJsonMarshaller.getInstance().marshall(expectedValue,
jsonWriter);
}
}
jsonWriter.endObject();
}
if (updateItemRequest.getConditionalOperator() != null) {
String conditionalOperator = updateItemRequest.getConditionalOperator();
jsonWriter.name("ConditionalOperator");
jsonWriter.value(conditionalOperator);
}
if (updateItemRequest.getReturnValues() != null) {
String returnValues = updateItemRequest.getReturnValues();
jsonWriter.name("ReturnValues");
jsonWriter.value(returnValues);
}
if (updateItemRequest.getReturnConsumedCapacity() != null) {
String returnConsumedCapacity = updateItemRequest.getReturnConsumedCapacity();
jsonWriter.name("ReturnConsumedCapacity");
jsonWriter.value(returnConsumedCapacity);
}
if (updateItemRequest.getReturnItemCollectionMetrics() != null) {
String returnItemCollectionMetrics = updateItemRequest
.getReturnItemCollectionMetrics();
jsonWriter.name("ReturnItemCollectionMetrics");
jsonWriter.value(returnItemCollectionMetrics);
}
if (updateItemRequest.getUpdateExpression() != null) {
String updateExpression = updateItemRequest.getUpdateExpression();
jsonWriter.name("UpdateExpression");
jsonWriter.value(updateExpression);
}
if (updateItemRequest.getConditionExpression() != null) {
String conditionExpression = updateItemRequest.getConditionExpression();
jsonWriter.name("ConditionExpression");
jsonWriter.value(conditionExpression);
}
if (updateItemRequest.getExpressionAttributeNames() != null) {
java.util.Map<String, String> expressionAttributeNames = updateItemRequest
.getExpressionAttributeNames();
jsonWriter.name("ExpressionAttributeNames");
jsonWriter.beginObject();
for (java.util.Map.Entry<String, String> expressionAttributeNamesEntry : expressionAttributeNames
.entrySet()) {
String expressionAttributeNamesValue = expressionAttributeNamesEntry.getValue();
if (expressionAttributeNamesValue != null) {
jsonWriter.name(expressionAttributeNamesEntry.getKey());
jsonWriter.value(expressionAttributeNamesValue);
}
}
jsonWriter.endObject();
}
if (updateItemRequest.getExpressionAttributeValues() != null) {
java.util.Map<String, AttributeValue> expressionAttributeValues = updateItemRequest
.getExpressionAttributeValues();
jsonWriter.name("ExpressionAttributeValues");
jsonWriter.beginObject();
for (java.util.Map.Entry<String, AttributeValue> expressionAttributeValuesEntry : expressionAttributeValues
.entrySet()) {
AttributeValue expressionAttributeValuesValue = expressionAttributeValuesEntry
.getValue();
if (expressionAttributeValuesValue != null) {
jsonWriter.name(expressionAttributeValuesEntry.getKey());
AttributeValueJsonMarshaller.getInstance().marshall(
expressionAttributeValuesValue, jsonWriter);
}
}
jsonWriter.endObject();
}
jsonWriter.endObject();
jsonWriter.close();
String snippet = stringWriter.toString();
byte[] content = snippet.getBytes(UTF8);
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);
}
if (!request.getHeaders().containsKey("Content-Type")) {
request.addHeader("Content-Type", "application/x-amz-json-1.0");
}
return request;
}
}