de.tudarmstadt.ukp.csniper.webapp.evaluation.CorpusServiceImpl.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.evaluation;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Properties;

import org.apache.commons.io.IOUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Required;

import de.tudarmstadt.ukp.csniper.webapp.evaluation.model.Corpus;
import de.tudarmstadt.ukp.csniper.webapp.search.CorpusService;
import de.tudarmstadt.ukp.csniper.webapp.search.SearchEngine;

public class CorpusServiceImpl implements CorpusService, Serializable {
    private static final long serialVersionUID = 5380779638911392541L;

    private final Log log = LogFactory.getLog(getClass());

    private File repositoryPath;
    private String corpusInfoFile;
    private List<SearchEngine> engines;

    @Required
    public void setEngines(List<SearchEngine> aEngines) {
        engines = aEngines;
    }

    @Required
    public void setCorpusInfoFile(String aFilename) {
        corpusInfoFile = aFilename;
    }

    @Required
    public void setRepositoryPath(File aFile) {
        repositoryPath = aFile;
    }

    @Override
    public File getRepositoryPath() {
        return repositoryPath;
    }

    @Override
    public List<String> listCorpora() {
        List<String> corpora = new ArrayList<String>();
        for (File f : getCorporaDirs()) {
            corpora.add(f.getName().toUpperCase());
        }
        return corpora;
    }

    @Override
    public Corpus getCorpus(String aCorpusId) {
        BufferedReader br = null;
        Corpus c = new Corpus();
        c.setId(aCorpusId);

        try {
            File corpusPath = new File(repositoryPath, aCorpusId);
            Properties p = new Properties();
            br = new BufferedReader(
                    new InputStreamReader(new FileInputStream(new File(corpusPath, corpusInfoFile)), "UTF-8"));
            p.load(br);
            c.setName(p.getProperty("name"));
            c.setDescription(p.getProperty("description"));
            c.setLanguage(p.getProperty("language"));
        } catch (IOException e) {
            if (log.isErrorEnabled()) {
                log.error(e);
            }
        } finally {
            IOUtils.closeQuietly(br);
        }
        return c;
    }

    @Override
    public List<SearchEngine> listEngines(String aCorpusId) {
        File corpusPath = new File(repositoryPath, aCorpusId);
        List<SearchEngine> filteredEngines = new ArrayList<SearchEngine>();
        for (SearchEngine engine : engines) {
            if (new File(corpusPath, engine.getName()).exists()) {
                filteredEngines.add(engine);
            }
        }
        return filteredEngines;
    }

    private List<File> getCorporaDirs() {
        File[] dirs = repositoryPath.listFiles(new FileFilter() {
            @Override
            public boolean accept(File aPath) {
                return new File(aPath, corpusInfoFile).exists();
            }
        });
        return (dirs == null) ? new ArrayList<File>() : Arrays.asList(dirs);
    }
}