com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBSaveExpression Maven / Gradle / Ivy

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The Amazon Web Services SDK for Java provides Java APIs for building software on AWS' cost-effective, scalable, and reliable infrastructure products. The AWS Java SDK allows developers to code against APIs for all of Amazon's infrastructure web services (Amazon S3, Amazon EC2, Amazon SQS, Amazon Relational Database Service, Amazon AutoScaling, etc).

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/*
 * Copyright 2011-2014 Amazon Technologies, Inc.
 *
 * Licensed 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://aws.amazon.com/apache2.0
 *
 * 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.datamodeling;

import java.util.Map;

import com.amazonaws.services.dynamodbv2.model.ExpectedAttributeValue;

/**
 * Enables adding options to a save operation.
 * For example, you may want to save only if an attribute has a particular value.
 * @see DynamoDBMapper#save(Object, DynamoDBSaveExpression)
 */
public class DynamoDBSaveExpression {
    /** Optional expected attributes */
    private Map expectedAttributes;

    /**
     * Sets the expected condition to the map of attribute names to expected attribute values given.
     * 
     * @param expectedAttributes
     *            The map of attribute names to expected attribute value conditions to check on save
     */
    public void setExpected(Map expectedAttributes) {
        this.expectedAttributes = expectedAttributes;
    }

    /**
     * Gets the map of attribute names to expected attribute values to check on save.
     * 
     * @return The map of attribute names to expected attribute value conditions to check on save
     */
    public Map getExpected() {
        return expectedAttributes;
    }

}