mitm.common.extractor.impl.TextExtractorFactoryRegistryImpl.java Source code

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Here is the source code for mitm.common.extractor.impl.TextExtractorFactoryRegistryImpl.java

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/*
 * Copyright (c) 2010-2011, Martijn Brinkers, Djigzo.
 * 
 * This file is part of Djigzo email encryption.
 *
 * Djigzo is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License 
 * version 3, 19 November 2007 as published by the Free Software 
 * Foundation.
 *
 * Djigzo is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public 
 * License along with Djigzo. If not, see <http://www.gnu.org/licenses/>
 *
 * Additional permission under GNU AGPL version 3 section 7
 * 
 * If you modify this Program, or any covered work, by linking or 
 * combining it with aspectjrt.jar, aspectjweaver.jar, tyrex-1.0.3.jar, 
 * freemarker.jar, dom4j.jar, mx4j-jmx.jar, mx4j-tools.jar, 
 * spice-classman-1.0.jar, spice-loggerstore-0.5.jar, spice-salt-0.8.jar, 
 * spice-xmlpolicy-1.0.jar, saaj-api-1.3.jar, saaj-impl-1.3.jar, 
 * wsdl4j-1.6.1.jar (or modified versions of these libraries), 
 * containing parts covered by the terms of Eclipse Public License, 
 * tyrex license, freemarker license, dom4j license, mx4j license,
 * Spice Software License, Common Development and Distribution License
 * (CDDL), Common Public License (CPL) the licensors of this Program grant 
 * you additional permission to convey the resulting work.
 */
package mitm.common.extractor.impl;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.lang.StringUtils;

import mitm.common.extractor.TextExtractorFactory;
import mitm.common.extractor.TextExtractorFactoryRegistry;
import mitm.common.util.Check;

/**
 * Implementation of {@link TextExtractorFactoryRegistry}.
 * 
 * @author Martijn Brinkers
 *
 */
public class TextExtractorFactoryRegistryImpl implements TextExtractorFactoryRegistry {
    /*
     * Mapping from mime type to TextExtractorFactory.
     */
    private final Map<String, TextExtractorFactory> factories = new HashMap<String, TextExtractorFactory>();

    public TextExtractorFactoryRegistryImpl(Collection<TextExtractorFactory> factories) {
        registerTextExtractorFactories(factories);
    }

    private String normalizeMimeType(String mimeType) {
        return StringUtils.trimToEmpty(StringUtils.lowerCase(mimeType));
    }

    private synchronized void registerTextExtractorFactory(TextExtractorFactory factory) {
        Check.notNull(factory, "factory");

        String[] mimeTypes = factory.getSupportedMimeTypes();

        if (mimeTypes != null) {
            for (String mimeType : mimeTypes) {
                if (mimeType == null) {
                    continue;
                }

                factories.put(normalizeMimeType(mimeType), factory);
            }
        }
    }

    @Override
    public void registerTextExtractorFactories(Collection<TextExtractorFactory> factories) {
        if (factories != null) {
            for (TextExtractorFactory factory : factories) {
                registerTextExtractorFactory(factory);
            }
        }
    }

    @Override
    public synchronized TextExtractorFactory getFactory(String mimeType) {
        return factories.get(normalizeMimeType(mimeType));
    }
}