com.amazonaws.services.dynamodbv2.model.transform.UpdateItemRequestMarshaller Maven / Gradle / Ivy
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The AWS Java SDK for Amazon DynamoDB module holds the client classes that are used for communicating with Amazon DynamoDB Service
/*
* Copyright 2010-2015 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 static com.amazonaws.util.StringUtils.COMMA_SEPARATOR;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.OutputStreamWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.List;
import java.util.regex.Pattern;
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.*;
/**
* Update Item Request Marshaller
*/
public class UpdateItemRequestMarshaller implements Marshaller, UpdateItemRequest> {
public Request marshall(UpdateItemRequest updateItemRequest) {
if (updateItemRequest == null) {
throw new AmazonClientException("Invalid argument passed to marshall(...)");
}
Request request = new DefaultRequest(updateItemRequest, "AmazonDynamoDBv2");
String target = "DynamoDB_20120810.UpdateItem";
request.addHeader("X-Amz-Target", target);
request.setHttpMethod(HttpMethodName.POST);
request.setResourcePath("");
try {
StringWriter stringWriter = new StringWriter();
JSONWriter jsonWriter = new JSONWriter(stringWriter);
jsonWriter.object();
if (updateItemRequest.getTableName() != null) {
jsonWriter.key("TableName").value(updateItemRequest.getTableName());
}
if (updateItemRequest.getKey() != null) {
jsonWriter.key("Key");
jsonWriter.object();
for (Map.Entry keyListValue : updateItemRequest.getKey().entrySet()) {
if (keyListValue.getValue() != null) {
jsonWriter.key(keyListValue.getKey());
AttributeValueJsonMarshaller.getInstance().marshall(keyListValue.getValue(), jsonWriter);
}
}
jsonWriter.endObject();
}
if (updateItemRequest.getAttributeUpdates() != null) {
jsonWriter.key("AttributeUpdates");
jsonWriter.object();
for (Map.Entry attributeUpdatesListValue : updateItemRequest.getAttributeUpdates().entrySet()) {
if (attributeUpdatesListValue.getValue() != null) {
jsonWriter.key(attributeUpdatesListValue.getKey());
jsonWriter.object();
AttributeValue value = attributeUpdatesListValue.getValue().getValue();
if (value != null) {
jsonWriter.key("Value");
AttributeValueJsonMarshaller.getInstance().marshall(value, jsonWriter);
}
if (attributeUpdatesListValue.getValue().getAction() != null) {
jsonWriter.key("Action").value(attributeUpdatesListValue.getValue().getAction());
}
jsonWriter.endObject();
}
}
jsonWriter.endObject();
}
if (updateItemRequest.getExpected() != null) {
jsonWriter.key("Expected");
jsonWriter.object();
for (Map.Entry expectedListValue : updateItemRequest.getExpected().entrySet()) {
if (expectedListValue.getValue() != null) {
jsonWriter.key(expectedListValue.getKey());
jsonWriter.object();
AttributeValue value = expectedListValue.getValue().getValue();
if (value != null) {
jsonWriter.key("Value");
AttributeValueJsonMarshaller.getInstance().marshall(value, jsonWriter);
}
if (expectedListValue.getValue().isExists() != null) {
jsonWriter.key("Exists").value(expectedListValue.getValue().isExists());
}
if (expectedListValue.getValue().getComparisonOperator() != null) {
jsonWriter.key("ComparisonOperator").value(expectedListValue.getValue().getComparisonOperator());
}
com.amazonaws.internal.ListWithAutoConstructFlag attributeValueListList = (com.amazonaws.internal.ListWithAutoConstructFlag)(expectedListValue.getValue().getAttributeValueList());
if (attributeValueListList != null && !(attributeValueListList.isAutoConstruct() && attributeValueListList.isEmpty())) {
jsonWriter.key("AttributeValueList");
jsonWriter.array();
for (AttributeValue attributeValueListListValue : attributeValueListList) {
if (attributeValueListListValue != null) {
AttributeValueJsonMarshaller.getInstance().marshall(attributeValueListListValue, jsonWriter);
}
}
jsonWriter.endArray();
}
jsonWriter.endObject();
}
}
jsonWriter.endObject();
}
if (updateItemRequest.getConditionalOperator() != null) {
jsonWriter.key("ConditionalOperator").value(updateItemRequest.getConditionalOperator());
}
if (updateItemRequest.getReturnValues() != null) {
jsonWriter.key("ReturnValues").value(updateItemRequest.getReturnValues());
}
if (updateItemRequest.getReturnConsumedCapacity() != null) {
jsonWriter.key("ReturnConsumedCapacity").value(updateItemRequest.getReturnConsumedCapacity());
}
if (updateItemRequest.getReturnItemCollectionMetrics() != null) {
jsonWriter.key("ReturnItemCollectionMetrics").value(updateItemRequest.getReturnItemCollectionMetrics());
}
if (updateItemRequest.getUpdateExpression() != null) {
jsonWriter.key("UpdateExpression").value(updateItemRequest.getUpdateExpression());
}
if (updateItemRequest.getConditionExpression() != null) {
jsonWriter.key("ConditionExpression").value(updateItemRequest.getConditionExpression());
}
if (updateItemRequest.getExpressionAttributeNames() != null) {
jsonWriter.key("ExpressionAttributeNames");
jsonWriter.object();
for (Map.Entry expressionAttributeNamesListValue : updateItemRequest.getExpressionAttributeNames().entrySet()) {
if (expressionAttributeNamesListValue.getValue() != null) {
jsonWriter.key(expressionAttributeNamesListValue.getKey());
jsonWriter.value(expressionAttributeNamesListValue.getValue());
}
}
jsonWriter.endObject();
}
if (updateItemRequest.getExpressionAttributeValues() != null) {
jsonWriter.key("ExpressionAttributeValues");
jsonWriter.object();
for (Map.Entry expressionAttributeValuesListValue : updateItemRequest.getExpressionAttributeValues().entrySet()) {
if (expressionAttributeValuesListValue.getValue() != null) {
jsonWriter.key(expressionAttributeValuesListValue.getKey());
AttributeValueJsonMarshaller.getInstance().marshall(expressionAttributeValuesListValue.getValue(), jsonWriter);
}
}
jsonWriter.endObject();
}
jsonWriter.endObject();
String snippet = stringWriter.toString();
byte[] content = snippet.getBytes(UTF8);
request.setContent(new StringInputStream(snippet));
request.addHeader("Content-Length", Integer.toString(content.length));
request.addHeader("Content-Type", "application/x-amz-json-1.0");
} catch(Throwable t) {
throw new AmazonClientException("Unable to marshall request to JSON: " + t.getMessage(), t);
}
return request;
}
}