/*
* Copyright (C) 2009 eXo Platform SAS.
*
* This 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 software 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.services.jcr.impl.xml.exporting;
import org.apache.ws.commons.util.Base64;
import org.exoplatform.services.jcr.core.ExtendedPropertyType;
import org.exoplatform.services.jcr.dataflow.ItemDataConsumer;
import org.exoplatform.services.jcr.datamodel.NodeData;
import org.exoplatform.services.jcr.datamodel.PropertyData;
import org.exoplatform.services.jcr.datamodel.ValueData;
import org.exoplatform.services.jcr.impl.Constants;
import org.exoplatform.services.jcr.impl.core.value.ValueFactoryImpl;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import javax.jcr.NamespaceException;
import javax.jcr.NamespaceRegistry;
import javax.jcr.PropertyType;
import javax.jcr.RepositoryException;
/**
* @author <a href="mailto:Sergey.Kabashnyuk@gmail.com">Sergey Kabashnyuk</a>
* @version
*/
public class SystemViewContentExporter extends HandlingContentExporter
{
private static final int BUFFER_SIZE = 3 * 1024 * 3;
/**
* @param handler
* @param dataManager
* @param noRecurse
* @throws NamespaceException
* @throws RepositoryException
*/
public SystemViewContentExporter(ContentHandler handler, ItemDataConsumer dataManager,
NamespaceRegistry namespaceRegistry, ValueFactoryImpl systemValueFactory, boolean skipBinary, boolean noRecurse)
throws NamespaceException, RepositoryException
{
super(handler, dataManager, namespaceRegistry, systemValueFactory, skipBinary, noRecurse);
}
/**
* Return the current content handler
*/
public ContentHandler getContentHandler()
{
return contentHandler;
}
/*
* (non-Javadoc)
* @see
* org.exoplatform.services.jcr.dataflow.ItemDataTraversingVisitor#entering(org.exoplatform.services
* .jcr.datamodel.NodeData, int)
*/
@Override
protected void entering(NodeData node, int level) throws RepositoryException
{
try
{
// set name of node as sv:name attribute
AttributesImpl atts = new AttributesImpl();
atts.addAttribute(getSvNamespaceUri(), "name", "sv:name", "CDATA", getExportName(node, false));
contentHandler.startElement(getSvNamespaceUri(), "node", "sv:node", atts);
}
catch (SAXException e)
{
throw new RepositoryException(e);
}
}
/*
* (non-Javadoc)
* @see
* org.exoplatform.services.jcr.dataflow.ItemDataTraversingVisitor#entering(org.exoplatform.services
* .jcr.datamodel.PropertyData, int)
*/
@Override
protected void entering(PropertyData property, int level) throws RepositoryException
{
try
{
// set name and type of property
AttributesImpl atts = new AttributesImpl();
atts.addAttribute(getSvNamespaceUri(), "name", "sv:name", "CDATA", getExportName(property, false));
atts.addAttribute(getSvNamespaceUri(), "type", "sv:type", "CDATA", ExtendedPropertyType.nameFromValue(property
.getType()));
contentHandler.startElement(getSvNamespaceUri(), "property", "sv:property", atts);
List<ValueData> values = property.getValues();
for (ValueData valueData : values)
{
writeValueData(valueData, property.getType());
contentHandler.endElement(getSvNamespaceUri(), "value", "sv:value");
}
}
catch (SAXException e)
{
throw new RepositoryException("Can't export value to string: " + e.getMessage(), e);
}
catch (IllegalStateException e)
{
throw new RepositoryException("Can't export value to string: " + e.getMessage(), e);
}
catch (IOException e)
{
throw new RepositoryException("Can't export value to string: " + e.getMessage(), e);
}
}
/*
* (non-Javadoc)
* @see
* org.exoplatform.services.jcr.dataflow.ItemDataTraversingVisitor#leaving(org.exoplatform.services
* .jcr.datamodel.NodeData, int)
*/
@Override
protected void leaving(NodeData node, int level) throws RepositoryException
{
try
{
contentHandler.endElement(getSvNamespaceUri(), "node", "sv:node");
}
catch (SAXException e)
{
throw new RepositoryException(e);
}
}
/*
* (non-Javadoc)
* @see
* org.exoplatform.services.jcr.dataflow.ItemDataTraversingVisitor#leaving(org.exoplatform.services
* .jcr.datamodel.PropertyData, int)
*/
@Override
protected void leaving(PropertyData property, int level) throws RepositoryException
{
try
{
contentHandler.endElement(getSvNamespaceUri(), "property", "sv:property");
}
catch (SAXException e)
{
throw new RepositoryException(e);
}
}
protected void writeValueData(ValueData data, int type) throws RepositoryException, IllegalStateException,
IOException, SAXException
{
if (PropertyType.BINARY == type)
{
contentHandler.startElement(getSvNamespaceUri(), "value", "sv:value", new AttributesImpl());
if (!isSkipBinary())
{
InputStream is = data.getAsStream();
try
{
byte[] buffer = new byte[BUFFER_SIZE];
int len;
while ((len = is.read(buffer)) > 0)
{
char[] charbuf1 = Base64.encode(buffer, 0, len, 0, "").toCharArray();
contentHandler.characters(charbuf1, 0, charbuf1.length);
}
}
finally
{
if (is != null)
{
is.close();
}
}
}
}
else
{
String charValue = getValueAsStringForExport(data, type);
if (hasValidCharsOnly(charValue))
{
contentHandler.startElement(getSvNamespaceUri(), "value", "sv:value", new AttributesImpl());
contentHandler.characters(charValue.toCharArray(), 0, charValue.length());
}
else
{
byte[] content = charValue.getBytes(Constants.DEFAULT_ENCODING);
char[] charbuf = Base64.encode(content, 0, content.length, 0, "").toCharArray();
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute(Constants.NS_XSI_URI, "type", "xsi:type", "CDATA", "xsd:base64Binary");
contentHandler.startElement(getSvNamespaceUri(), "value", "sv:value", attrs);
contentHandler.characters(charbuf, 0, charbuf.length);
}
}
}
}