/**********************************************************************************
* $URL: https://source.sakaiproject.org/svn/mailarchive/trunk/mailarchive-impl/impl/src/java/org/sakaiproject/mailarchive/impl/conversion/ExtractXMLToColumns.java $
* $Id: ExtractXMLToColumns.java 105079 2012-02-24 23:08:11Z ottenhoff@longsight.com $
***********************************************************************************
*
* Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008 The Sakai Foundation
*
* Licensed under the Educational Community License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.opensource.org/licenses/ECL-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
**********************************************************************************/
package org.sakaiproject.mailarchive.impl.conversion;
import java.sql.Blob;
import java.sql.Clob;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Types;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.sakaiproject.util.conversion.SchemaConversionHandler;
/**
* @author ieb
*/
public class ExtractXMLToColumns implements SchemaConversionHandler
{
private static final Log log = LogFactory
.getLog(ExtractXMLToColumns.class);
/*
* (non-Javadoc)
*
* @see org.sakaiproject.content.impl.serialize.impl.SchemaConversionHandler#getSource(java.lang.String,
* java.sql.ResultSet)
*/
public Object getSource(String id, ResultSet rs) throws SQLException
{
ResultSetMetaData metadata = rs.getMetaData();
String rv = null;
switch(metadata.getColumnType(1))
{
case Types.BLOB:
Blob blob = rs.getBlob(1);
if(blob != null)
{
rv = new String(blob.getBytes(1L, (int) blob.length()));
}
break;
case Types.CLOB:
Clob clob = rs.getClob(1);
if(clob != null)
{
rv = clob.getSubString(1L, (int) clob.length());
}
break;
case Types.CHAR:
case Types.LONGVARCHAR:
case Types.VARCHAR:
case Types.BINARY:
case Types.VARBINARY:
case Types.LONGVARBINARY:
byte[] bytes = rs.getBytes(1);
if(bytes != null)
{
rv = new String(bytes);
}
break;
}
// System.out.println("getSource(" + id + ") \n" + rv + "\n");
return rv;
}
/*
* (non-Javadoc)
*
* @see org.sakaiproject.content.impl.serialize.impl.SchemaConversionHandler#convertSource(java.lang.String,
* java.lang.Object, java.sql.PreparedStatement)
*/
public boolean convertSource(String id, Object source, PreparedStatement updateRecord)
throws SQLException
{
// System.out.println("convertSource id="+id+" prep="+updateRecord+" source="+source);
String xml = (String) source;
if (!xml.startsWith("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"))
{
log.warn("Improperly formatted XML");
return false;
}
/*
* <?xml version="1.0" encoding="UTF-8"?> <message
* body="Qm9keSAyMDA4MDEyNzIwMTM0MTkzMw=="
* body-html="Qm9keSAyMDA4MDEyNzIwMTM0MTkzMw=="> <header
* access="channel" date="20080127201341934" from="admin"
* id="d978685c-8730-4975-b3ea-55fdf03e0e5a"
* mail-date="20080127201341933" mail-from="from 20080127201341933"
* subject="Subject 20080127201341933"/><properties/></message>
*/
String body = getXmlAttr(xml, "body");
String subject = getXmlAttr(xml, "subject");
byte[] decoded = null;
try
{
if ( body != null )
{
decoded = Base64.decodeBase64(body); // UTF-8 by default
body = org.apache.commons.codec.binary.StringUtils.newStringUtf8(decoded);
}
}
catch (Exception e)
{
log.warn("Error Base64 Decoding Body and HTML Body");
return false;
}
updateRecord.setString(1, subject);
updateRecord.setString(2, body);
updateRecord.setString(3, id);
return true;
}
String getXmlAttr(String xml, String tagName)
{
String lookfor = tagName+"=\"";
int ipos = xml.indexOf(lookfor);
if ( ipos < 1 ) return null;
ipos = ipos + lookfor.length();
int jpos = xml.indexOf("\"",ipos);
if ( jpos < 1 || ipos > jpos ) return null;
return xml.substring(ipos,jpos);
}
/**
* @see org.sakaiproject.util.conversion.SchemaConversionHandler#validate(java.lang.String, java.lang.Object, java.lang.Object)
*/
public void validate(String id, Object source, Object result) throws Exception
{
// System.out.println("validate id="+id+" source="+source+" result="+result);
}
/* (non-Javadoc)
* @see org.sakaiproject.content.impl.serialize.impl.conversion.SchemaConversionHandler#getValidateSource(java.lang.String, java.sql.ResultSet)
*/
public Object getValidateSource(String id, ResultSet rs) throws SQLException
{
ResultSetMetaData metadata = rs.getMetaData();
byte[] rv = null;
switch(metadata.getColumnType(1))
{
case Types.BLOB:
Blob blob = rs.getBlob(1);
if(blob != null)
{
rv = blob.getBytes(1L, (int) blob.length());
}
else
{
System.out.println("getValidateSource(" + id + ") blob == null" );
}
break;
case Types.CLOB:
Clob clob = rs.getClob(1);
if(clob != null)
{
rv = clob.getSubString(1L, (int) clob.length()).getBytes();
}
break;
case Types.CHAR:
case Types.LONGVARCHAR:
case Types.VARCHAR:
rv = rs.getString(1).getBytes();
break;
case Types.BINARY:
case Types.VARBINARY:
case Types.LONGVARBINARY:
rv = rs.getBytes(1);
break;
}
// System.out.println("getValidateSource(" + id + ") \n" + rv + "\n");
return rv;
}
}