org.eclipse.help.internal.search.AnalyzerFactory.java Source code

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Here is the source code for org.eclipse.help.internal.search.AnalyzerFactory.java

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/*******************************************************************************
 * Copyright (c) 2012 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.help.internal.search;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.br.BrazilianAnalyzer;
import org.apache.lucene.analysis.cjk.CJKAnalyzer;
import org.apache.lucene.analysis.cz.CzechAnalyzer;
import org.apache.lucene.analysis.de.GermanAnalyzer;
import org.apache.lucene.analysis.el.GreekAnalyzer;
import org.apache.lucene.analysis.fr.FrenchAnalyzer;
import org.apache.lucene.analysis.nl.DutchAnalyzer;
import org.apache.lucene.analysis.ru.RussianAnalyzer;
import org.apache.lucene.util.Version;
import org.eclipse.core.runtime.*;

/**
 * A factory responsible for instantiating a lucene {@link Analyzer}.
 */
public class AnalyzerFactory implements IExecutableExtension {
    private String locale = null;

    public Analyzer create() {
        if (locale == null)
            return null;
        Version version = Version.LUCENE_35;
        if ("pt".equals(locale)) //$NON-NLS-1$
            return new BrazilianAnalyzer(version);
        if ("ja".equals(locale)) //$NON-NLS-1$
            return new CJKAnalyzer(version);
        if ("ko".equals(locale)) //$NON-NLS-1$
            return new CJKAnalyzer(version);
        if ("pt".equals(locale)) //$NON-NLS-1$
            return new BrazilianAnalyzer(version);
        if ("cs".equals(locale)) //$NON-NLS-1$
            return new CzechAnalyzer(version);
        if ("de".equals(locale)) //$NON-NLS-1$
            return new GermanAnalyzer(version);
        if ("el".equals(locale)) //$NON-NLS-1$
            return new GreekAnalyzer(version);
        if ("fr".equals(locale)) //$NON-NLS-1$
            return new FrenchAnalyzer(version);
        if ("nl".equals(locale)) //$NON-NLS-1$
            return new DutchAnalyzer(version);
        if ("ru".equals(locale)) //$NON-NLS-1$
            return new RussianAnalyzer(version);
        //unknown language
        return null;

    }

    public void setInitializationData(IConfigurationElement config, String propertyName, Object data)
            throws CoreException {
        if (data instanceof String)
            locale = (String) data;
    }

}