org.theospi.portfolio.presentation.model.impl.HibernatePresentationProperties.java Source code

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Here is the source code for org.theospi.portfolio.presentation.model.impl.HibernatePresentationProperties.java

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/**********************************************************************************
* $URL:https://source.sakaiproject.org/svn/osp/trunk/presentation/api/src/java/org/theospi/portfolio/presentation/model/impl/HibernatePresentationProperties.java $
* $Id:HibernatePresentationProperties.java 9134 2006-05-08 20:28:42Z chmaurer@iupui.edu $
***********************************************************************************
*
 * Copyright (c) 2005, 2006, 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.theospi.portfolio.presentation.model.impl;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.Serializable;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.HibernateException;
import org.hibernate.usertype.UserType;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;
import org.sakaiproject.metaobj.shared.model.ElementBean;
import org.sakaiproject.metaobj.shared.model.StructuredArtifact;

public class HibernatePresentationProperties implements UserType {
    protected final Log logger = LogFactory.getLog(getClass());
    private final static int[] SQL_TYPES = new int[] { Types.BLOB };

    public HibernatePresentationProperties() {
    }

    public int[] sqlTypes() {
        return SQL_TYPES;
    }

    /* (non-Javadoc)
     * @see org.hibernate.UserType#deepCopy(java.lang.Object)
     */
    public Object deepCopy(Object arg0) throws HibernateException {
        return arg0;
    }

    /* (non-Javadoc)
     * @see org.hibernate.UserType#equals(java.lang.Object, java.lang.Object)
     */
    public boolean equals(Object x, Object y) throws HibernateException {
        return (x == y) || (x != null && y != null && x.equals(y));
    }

    /* (non-Javadoc)
     * @see org.hibernate.UserType#isMutable()
     */
    public boolean isMutable() {
        return false;
    }

    /* (non-Javadoc)
     * @see org.hibernate.UserType#nullSafeGet(java.sql.ResultSet, java.lang.String[], java.lang.Object)
     */
    public Object nullSafeGet(ResultSet rs, String[] names, Object owner) throws HibernateException, SQLException {
        byte[] bytes = rs.getBytes(names[0]);
        if (rs.wasNull())
            return null;

        ElementBean elementBean = new ElementBean();
        elementBean.setDeferValidation(true);
        ByteArrayInputStream in = new ByteArrayInputStream(bytes);
        SAXBuilder saxBuilder = new SAXBuilder();
        saxBuilder.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true); // SAK-23131
        try {
            Document doc = saxBuilder.build(in);
            elementBean.setBaseElement(doc.getRootElement());
        } catch (JDOMException e) {
            throw new HibernateException(e);
        } catch (IOException e) {
            throw new HibernateException(e);
        }
        return elementBean;
    }

    /* (non-Javadoc)
     * @see org.hibernate.UserType#nullSafeSet(java.sql.PreparedStatement, java.lang.Object, int)
     */
    public void nullSafeSet(PreparedStatement st, Object value, int index) throws HibernateException, SQLException {
        if (value == null) {
            st.setNull(index, Types.VARBINARY);
        } else {
            ElementBean elementBean = (ElementBean) value;
            Document doc = new Document();
            Element rootElement = elementBean.getBaseElement();
            rootElement.detach();
            doc.setRootElement(rootElement);
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            XMLOutputter xmlOutputter = new XMLOutputter();
            try {
                xmlOutputter.output(doc, out);
            } catch (IOException e) {
                throw new HibernateException(e);
            }
            st.setBytes(index, out.toByteArray());
        }

    }

    /* (non-Javadoc)
     * @see org.hibernate.UserType#returnedClass()
     */
    public Class returnedClass() {
        return StructuredArtifact.class;
    }

    public int hashCode(Object o) throws HibernateException {
        // TODO Auto-generated method stub
        return o.hashCode();
    }

    public Serializable disassemble(Object arg0) throws HibernateException {
        // TODO Auto-generated method stub
        return null;
    }

    public Object assemble(Serializable arg0, Object arg1) throws HibernateException {
        // TODO Auto-generated method stub
        return null;
    }

    public Object replace(Object original, Object target, Object owner) throws HibernateException {
        // TODO Auto-generated method stub
        return original;
    }

}