de.tudarmstadt.ukp.csniper.webapp.search.tgrep.TgrepEngine.java Source code

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/*******************************************************************************
 * Copyright 2013
 * Ubiquitous Knowledge Processing (UKP) Lab
 * Technische Universitt Darmstadt
 * 
 * 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.tudarmstadt.ukp.csniper.webapp.search.tgrep;

import java.io.File;
import java.io.Serializable;

import org.apache.commons.lang.SystemUtils;
import org.springframework.beans.factory.annotation.Required;

import de.tudarmstadt.ukp.csniper.webapp.search.CorpusService;
import de.tudarmstadt.ukp.csniper.webapp.search.SearchEngine;

public class TgrepEngine implements SearchEngine, Serializable {
    private static final long serialVersionUID = 1375358091252109037L;

    public static final String EXT_CORPUS = ".txt";
    public static final String EXT_BINARY = ".t2c";
    public static final String EXT_COMPRESSED = EXT_BINARY + ".gz";
    public static final String COMMENT_SEPARATOR = ",";

    private String name;
    private File tgrepExecutable;
    private CorpusService corpusService;

    @Required
    public void setTgrepExecutable(File aTgrepExecutable) {
        tgrepExecutable = aTgrepExecutable;
    }

    public File getTgrepExecutable() {
        return tgrepExecutable;
    }

    @Override
    public void setBeanName(String aName) {
        name = aName;
    }

    @Override
    public String getName() {
        return name;
    }

    @Override
    public void setCorpusService(CorpusService aCorpusService) {
        corpusService = aCorpusService;
    }

    @Override
    public TgrepQuery createQuery(String aType, String aCollectionId, String aQuery) {
        return new TgrepQuery(this, aType, aCollectionId, aQuery);
    }

    public String getCorpusPath(String aCollectionId) {
        File base = new File(new File(corpusService.getRepositoryPath(), aCollectionId), name);

        // try gzipped corpus file first
        File cFile = new File(base, aCollectionId + EXT_COMPRESSED);

        // workaround for cygwin: packed corpus files only work with this approach
        if (cFile.exists() && SystemUtils.IS_OS_WINDOWS) {
            return "/cygdrive/" + cFile.getAbsolutePath().replace("\\", "/").replace(":", "");
        } else {
            cFile = new File(base, aCollectionId + EXT_BINARY);
            return cFile.getAbsolutePath();
        }
    }
}