com.basho.riak.client.api.commands.search.FetchIndex Maven / Gradle / Ivy

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HttpClient-based client for Riak

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/*
 * Copyright 2013 Basho 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://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.basho.riak.client.api.commands.search;

import com.basho.riak.client.api.RiakCommand;
import com.basho.riak.client.api.commands.CoreFutureAdapter;
import com.basho.riak.client.core.RiakCluster;
import com.basho.riak.client.core.RiakFuture;
import com.basho.riak.client.core.operations.YzFetchIndexOperation;


/**
 * Command used to fetch a search index from Riak.
 * @author Dave Rusek 
 * @since 2.0
 */
public class FetchIndex extends RiakCommand
{
	private final String index;

	FetchIndex(Builder builder)
	{
		this.index = builder.index;
	}

	@Override
    protected final RiakFuture executeAsync(RiakCluster cluster)
    {
        RiakFuture coreFuture =
            cluster.execute(buildCoreOperation());

        CoreFutureAdapter future =
            new CoreFutureAdapter(coreFuture)
            {
                @Override
                protected YzFetchIndexOperation.Response convertResponse(YzFetchIndexOperation.Response coreResponse)
                {
                    return coreResponse;
                }

                @Override
                protected String convertQueryInfo(String coreQueryInfo)
                {
                    return coreQueryInfo;
                }
            };
        coreFuture.addListener(future);
        return future;
    }

    private YzFetchIndexOperation buildCoreOperation()
    {
        return new YzFetchIndexOperation.Builder().withIndexName(index).build();
    }

    /**
     * Builder for a FetchIndex command.
     */
	public static class Builder
	{
		private final String index;

        /**
         * Construct a Builder for a FetchIndex command.
         *
         * @param index The name of the search index to fetch from Riak.
         */
		public Builder(String index)
		{
			this.index = index;
		}

        /**
         * Construct the FetchIndex command.
         * @return the new FetchIndex command.
         */
		public FetchIndex build()
		{
			return new FetchIndex(this);
		}
	}
}