com.joyveb.dbpimpl.cass.prepare.schema.AbstractFindOperation.java Source code

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Here is the source code for com.joyveb.dbpimpl.cass.prepare.schema.AbstractFindOperation.java

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/*
 * Copyright 2014 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 com.joyveb.dbpimpl.cass.prepare.schema;

import java.util.Collections;
import java.util.List;

import org.springframework.data.convert.EntityReader;

import com.datastax.driver.core.ResultSet;
import com.datastax.driver.core.Row;
import com.datastax.driver.core.Session;
import com.google.common.collect.Lists;
import com.joyveb.dbpimpl.cass.prepare.convert.CassandraConverter;

/**
 * Abstract Find Operation
 * 
 * @author Alex Shvid
 * 
 * @param <T> - return Type
 */
public abstract class AbstractFindOperation<T> extends AbstractGetOperation<List<T>> {

    protected final EntityReader<? super T, Object> entityReader;
    protected final Class<T> entityClass;

    public AbstractFindOperation(Session session, CassandraConverter cassandraConverter, Class<T> entityClass) {
        super(session);
        this.entityReader = cassandraConverter;
        this.entityClass = entityClass;
    }

    @Override
    public String getTableName() {
        String tableName = super.getTableName();
        if (tableName != null) {
            return tableName;
        }
        return ((CassandraConverter) entityReader).getMappingContext().getPersistentEntity(entityClass)
                .getTableName();
    }

    @Override
    public List<T> transform(ResultSet resultSet) {
        List<T> result = Lists.newArrayList();
        for (Row row : resultSet) {
            T obj = entityReader.read(entityClass, row);
            result.add(obj);
        }
        return Collections.unmodifiableList(result);

    }

}