de.hybris.platform.b2b.punchout.PunchOutUtils.java Source code

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Here is the source code for de.hybris.platform.b2b.punchout.PunchOutUtils.java

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/*
 * [y] hybris Platform
 *
 * Copyright (c) 2000-2014 hybris AG
 * All rights reserved.
 *
 * This software is the confidential and proprietary information of hybris
 * ("Confidential Information"). You shall not disclose such Confidential
 * Information and shall use it only in accordance with the terms of the
 * license agreement you entered into with hybris.
 * 
 *  
 */
package de.hybris.platform.b2b.punchout;

import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.StringWriter;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.PropertyException;
import javax.xml.bind.Unmarshaller;

import org.apache.commons.codec.binary.Base64;
import org.cxml.CXML;

public class PunchOutUtils {

    private static final String XML_WITHOUT_STANDALONE = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
    private static final String DOCTYPE = "<!DOCTYPE cXML SYSTEM \"http://xml.cXML.org/schemas/cXML/1.2.024/cXML.dtd\">";

    public static CXML unmarshallCXMLFromFile(final String relativeFilePath) throws FileNotFoundException {
        final InputStream fileInputStream = PunchOutUtils.class.getClassLoader()
                .getResourceAsStream(relativeFilePath);

        if (fileInputStream == null) {
            throw new FileNotFoundException("Could not find file [" + relativeFilePath + "]");
        }

        try {
            final JAXBContext jaxbContext = JAXBContext.newInstance(CXML.class);
            final Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
            return (CXML) unmarshaller.unmarshal(fileInputStream);
        } catch (final JAXBException e) {
            throw new PunchOutException(e.getErrorCode(), e.getMessage());
        }
    }

    public static String marshallFromBeanTree(final CXML cxml) {
        final StringWriter writer = new StringWriter();

        try {
            final JAXBContext context = JAXBContext.newInstance(CXML.class);
            final Marshaller m = context.createMarshaller();
            removeStandalone(m);
            setHeader(m);
            m.marshal(cxml, writer);
        } catch (final JAXBException e) {
            throw new PunchOutException(e.getErrorCode(), e.getMessage());
        }

        final String xml = writer.toString();

        return xml;
    }

    public static void removeStandalone(final Marshaller marshaller) throws PropertyException {
        marshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
    }

    public static void setHeader(final Marshaller m) throws PropertyException {
        m.setProperty("com.sun.xml.internal.bind.xmlHeaders", XML_WITHOUT_STANDALONE + DOCTYPE);
    }

    /**
     * Transforms a CXML into a Base64 String.
     * 
     * @param cxml
     *           the cxml object.
     * @return Base64 String
     */
    public static String transformCXMLToBase64(final CXML cxml) {
        final String cXML = marshallFromBeanTree(cxml);
        final String cXMLEncoded = Base64.encodeBase64String(cXML.getBytes());

        return cXMLEncoded;
    }

}