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package org.elasticsearch.plugin.nlpcn;

import org.elasticsearch.action.search.MultiSearchRequest;
import org.elasticsearch.action.search.MultiSearchRequestBuilder;
import org.elasticsearch.client.Client;
import org.nlpcn.es4sql.exception.SqlParseException;
import org.nlpcn.es4sql.query.multi.MultiQueryAction;
import org.nlpcn.es4sql.query.multi.MultiQueryRequestBuilder;

/**
 * Created by Eliran on 21/8/2016.
 */
public class MultiRequestExecutorFactory {
     public static ElasticHitsExecutor createExecutor(Client client,MultiQueryRequestBuilder builder) throws SqlParseException {
         switch (builder.getRelation()){
             case UNION_ALL:
             case UNION:
                 return new UnionExecutor(client,builder);
             case MINUS:
                 return new MinusExecutor(client,builder);
             default:
                 throw new SqlParseException("only supports union, and minus operations");
         }
     }
}