com.vivastream.security.oauth2.common.util.DynamoDBUtils.java Source code

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Here is the source code for com.vivastream.security.oauth2.common.util.DynamoDBUtils.java

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/**
 * Copyright 2014 Vivastream 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://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 com.vivastream.security.oauth2.common.util;

import java.util.Map;

import com.amazonaws.services.dynamodbv2.model.AttributeAction;
import com.amazonaws.services.dynamodbv2.model.AttributeValue;
import com.amazonaws.services.dynamodbv2.model.AttributeValueUpdate;

/**
 * @author Zac Balson
 */
public class DynamoDBUtils {

    public static void nullSafeUpdateS(Map<String, AttributeValueUpdate> updates, String column, String value) {
        if (value == null || value.length() == 0) {
            updates.put(column, new AttributeValueUpdate().withAction(AttributeAction.DELETE));
        } else {
            updates.put(column, new AttributeValueUpdate(new AttributeValue(value), AttributeAction.PUT));
        }
    }

    public static String nullSafeGetS(AttributeValue value) {
        return value == null ? null : value.getS();
    }

}