/*
* Copyright 2013 the original author or authors.
*
* 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 org.socialsignin.spring.data.dynamodb.query;
import org.socialsignin.spring.data.dynamodb.core.DynamoDBOperations;
/**
* @author Michael Lavelle
*/
public class CountByHashAndRangeKeyQuery<T> extends AbstractSingleEntityQuery<Long> implements Query<Long> {
private Object hashKey;
private Object rangeKey;
private Class<T> entityClass;
public CountByHashAndRangeKeyQuery(DynamoDBOperations dynamoDBOperations, Class<T> clazz, Object hashKey, Object rangeKey) {
super(dynamoDBOperations, Long.class);
this.hashKey = hashKey;
this.rangeKey = rangeKey;
this.entityClass = clazz;
}
@Override
public Long getSingleResult() {
return dynamoDBOperations.load(entityClass, hashKey, rangeKey) == null ? 0l : 1l;
}
}