net.sf.jooreports.converter.XmlDocumentFormatRegistry.java Source code

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Here is the source code for net.sf.jooreports.converter.XmlDocumentFormatRegistry.java

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//
// JOOConverter - The Open Source Java/OpenOffice Document Converter
// Copyright (C) 2004-2006 - Mirko Nasato <mirko@artofsolving.com>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
// http://www.gnu.org/copyleft/lesser.html
//
package net.sf.jooreports.converter;

import java.io.EOFException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;

import org.apache.commons.io.IOUtils;

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.converters.basic.AbstractBasicConverter;
import com.thoughtworks.xstream.io.xml.DomDriver;

public class XmlDocumentFormatRegistry extends BasicDocumentFormatRegistry implements DocumentFormatRegistry {

    private static final String DEFAULT_CONFIGURATION = "/"
            + XmlDocumentFormatRegistry.class.getPackage().getName().replace('.', '/') + "/document-formats.xml";

    public XmlDocumentFormatRegistry() {
        load(getClass().getResourceAsStream(DEFAULT_CONFIGURATION));
    }

    public XmlDocumentFormatRegistry(InputStream inputStream) {
        load(inputStream);
    }

    private void load(InputStream inputStream) {
        if (inputStream == null) {
            throw new IllegalArgumentException("inputStream is null");
        }
        XStream xstream = createXStream();
        try {
            ObjectInputStream in = xstream.createObjectInputStream(new InputStreamReader(inputStream));
            while (true) {
                try {
                    addDocumentFormat((DocumentFormat) in.readObject());
                } catch (EOFException endOfFile) {
                    break;
                }
            }
        } catch (Exception exception) {
            throw new RuntimeException("invalid registry configuration", exception);
        } finally {
            IOUtils.closeQuietly(inputStream);
        }
    }

    private XStream createXStream() {
        XStream xstream = new XStream(new DomDriver());
        xstream.setMode(XStream.NO_REFERENCES);
        xstream.alias("document-format", DocumentFormat.class);
        xstream.aliasField("mime-type", DocumentFormat.class, "mimeType");
        xstream.aliasField("file-extension", DocumentFormat.class, "fileExtension");
        xstream.aliasField("export-filters", DocumentFormat.class, "exportFilters");
        xstream.aliasField("export-options", DocumentFormat.class, "exportOptions");
        xstream.alias("family", DocumentFamily.class);
        xstream.registerConverter(new AbstractBasicConverter() {
            public boolean canConvert(Class type) {
                return type.equals(DocumentFamily.class);
            }

            protected Object fromString(String name) {
                return DocumentFamily.getFamily(name);
            }
        });
        return xstream;
    }
}