de.huberlin.cuneiform.dax.repl.DaxRepl.java Source code

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Here is the source code for de.huberlin.cuneiform.dax.repl.DaxRepl.java

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/*******************************************************************************
 * In the Hi-WAY project we propose a novel approach of executing scientific
 * workflows processing Big Data, as found in NGS applications, on distributed
 * computational infrastructures. The Hi-WAY software stack comprises the func-
 * tional workflow language Cuneiform as well as the Hi-WAY ApplicationMaster
 * for Apache Hadoop 2.x (YARN).
 *
 * List of Contributors:
 *
 * Jrgen Brandt (HU Berlin)
 * Marc Bux (HU Berlin)
 * Ulf Leser (HU Berlin)
 *
 * Jrgen Brandt is funded by the European Commission through the BiobankCloud
 * project. Marc Bux is funded by the Deutsche Forschungsgemeinschaft through
 * research training group SOAMED (GRK 1651).
 *
 * Copyright 2014 Humboldt-Universitt zu Berlin
 *
 * 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 de.huberlin.cuneiform.dax.repl;

import java.util.UUID;

import org.antlr.v4.runtime.ANTLRInputStream;
import org.antlr.v4.runtime.CommonTokenStream;
import org.antlr.v4.runtime.tree.ParseTree;
import org.antlr.v4.runtime.tree.ParseTreeWalker;
import org.apache.commons.logging.Log;

import de.huberlin.cuneiform.dax.semanticmodel.DaxSemanticModelListener;
import de.huberlin.cuneiform.libdax.parser.DaxLexer;
import de.huberlin.cuneiform.libdax.parser.DaxParser;
import de.huberlin.wbi.cuneiform.core.repl.BaseRepl;
import de.huberlin.wbi.cuneiform.core.semanticmodel.CompoundExpr;
import de.huberlin.wbi.cuneiform.core.semanticmodel.TopLevelContext;
import de.huberlin.wbi.cuneiform.core.ticketsrc.TicketSrcActor;

public class DaxRepl extends BaseRepl {

    public DaxRepl(TicketSrcActor ticketSrc, Log statLog) {
        super(ticketSrc, statLog);
    }

    @Override
    public synchronized int interpret(String input) {

        DaxSemanticModelListener adag;
        TopLevelContext tlc;

        adag = process(input);
        tlc = adag.toTopLevelContext();

        return interpret(tlc);

    }

    @Override
    public void queryFailedPost(UUID queryId, Long ticketId, Exception e, String script, String stdOut,
            String stdErr) {
    }

    @Override
    public void queryFinishedPost(UUID queryId, CompoundExpr result) {
    }

    @Override
    public void queryStartedPost(UUID runId) {
    }

    public static DaxSemanticModelListener process(String input) {

        ANTLRInputStream instream;
        DaxLexer lexer;
        CommonTokenStream tokenStream;
        DaxParser parser;
        ParseTree tree;
        ParseTreeWalker walker;
        DaxSemanticModelListener adag;

        walker = new ParseTreeWalker();

        // parse original content
        instream = new ANTLRInputStream(input);

        lexer = new DaxLexer(instream);
        lexer.removeErrorListeners();

        tokenStream = new CommonTokenStream(lexer);

        parser = new DaxParser(tokenStream);
        parser.removeErrorListeners();

        adag = new DaxSemanticModelListener();
        lexer.addErrorListener(adag);
        parser.addErrorListener(adag);

        tree = parser.adag();

        walker.walk(adag, tree);

        return adag;
    }

}