org.apache.drill.exec.ref.ReferenceInterpreter.java Source code

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Here is the source code for org.apache.drill.exec.ref.ReferenceInterpreter.java

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/*******************************************************************************
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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,
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package org.apache.drill.exec.ref;

import java.io.File;
import java.io.IOException;
import java.util.*;

import org.apache.drill.common.config.DrillConfig;
import org.apache.drill.common.logical.LogicalPlan;
import org.apache.drill.common.logical.data.LogicalOperator;
import org.apache.drill.exec.ref.eval.BasicEvaluatorFactory;
import org.apache.drill.exec.ref.eval.EvaluatorFactory;
import org.apache.drill.exec.ref.rops.SinkROP;
import org.apache.drill.exec.ref.rse.RSERegistry;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.common.base.Charsets;
import com.google.common.io.Files;

public class ReferenceInterpreter {
    static final Logger logger = LoggerFactory.getLogger(ReferenceInterpreter.class);

    private List<SinkROP> sinks = new ArrayList<SinkROP>();
    private LogicalPlan plan;
    private ROPConverter converter;
    private IteratorRegistry registry;

    public ReferenceInterpreter(LogicalPlan p, IteratorRegistry r, EvaluatorFactory builder, RSERegistry rses) {
        this.plan = p;
        this.registry = r;
        this.converter = new ROPConverter(p, registry, builder, rses);
    }

    /** Generate Reference equivalents to each operation and then collect and store all the sinks. 
     * @throws IOException **/
    public void setup() throws IOException {
        for (LogicalOperator op : plan.getSortedOperators()) {
            converter.convert(op);
        }
        sinks.addAll(registry.getSinks());
    }

    public Collection<RunOutcome> run() {
        Collection<RunOutcome> outcomes = new LinkedList<RunOutcome>();

        for (SinkROP r : sinks) {
            outcomes.add(r.run(new BasicStatusHandle()));
        }

        return outcomes;
    }

    public void cleanup() {

    }

    public static void main(String[] args) throws Exception {
        DrillConfig config = DrillConfig.create();
        final String jsonFile = args[0];
        LogicalPlan plan = LogicalPlan.parse(config, Files.toString(new File(jsonFile), Charsets.UTF_8));
        IteratorRegistry ir = new IteratorRegistry();
        ReferenceInterpreter i = new ReferenceInterpreter(plan, ir, new BasicEvaluatorFactory(ir),
                new RSERegistry(config));
        i.setup();
        Collection<RunOutcome> outcomes = i.run();

        for (RunOutcome outcome : outcomes) {
            System.out.println("============");
            System.out.println(outcome);
            if (outcome.outcome == RunOutcome.OutcomeType.FAILED && outcome.exception != null) {
                outcome.exception.printStackTrace();
            }

        }

    }
}