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/*
* ====================================================================
* Project: openMDX/Core, http://www.openmdx.org/
* Description: Java Beans
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 2009-2013, OMEX AG, Switzerland
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the openMDX team nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* ------------------
*
* This product includes software developed by other organizations as
* listed in the NOTICE file.
*/
package org.openmdx.base.text.conversion;
import org.openmdx.base.exception.ExceptionListener;
import org.openmdx.base.exception.ServiceException;
import org.openmdx.base.text.conversion.spi.BeanTransformer;
import org.openmdx.kernel.exception.BasicException;
import org.openmdx.kernel.loading.Classes;
/**
* Java Beans
*/
public class JavaBeans {
/**
* Constructor
*/
private JavaBeans(){
// Avoid instantiation
}
/**
* The eagerly acquired Java bean transformer
*/
private static final BeanTransformer transformer = Classes.newPlatformInstance(
"org.openmdx.base.beans.StandardBeanTransformer",
BeanTransformer.class
);
/**
* Encode a graph of java beans
*
* @param javaBean a graph of java beans
* @param exceptionListener the (optional) exception listener
*
* @return an XML document representing the graph of java beans
*
* @throws ServiceException in case of TRANSFORMATION_FAILURE
*/
public static String toXML(
Object javaBean,
ExceptionListener exceptionListener
) throws ServiceException {
try {
return transformer.encode(
javaBean,
exceptionListener
);
} catch (RuntimeException exception) {
throw new ServiceException(
exception,
BasicException.Code.DEFAULT_DOMAIN,
BasicException.Code.TRANSFORMATION_FAILURE,
"Unable to convert Java Bean to XML"
);
}
}
/**
* Encode a graph of java beans
*
* @param javaBean a graph of java beans
*
* @return an XML document representing the graph of java beans
*
* @throws ServiceException in case of TRANSFORMATION_FAILURE
*/
public static String toXML(
Object javaBean
) throws ServiceException {
return toXML(
javaBean,
new JavaBeanExceptionListener(javaBean)
);
}
/**
* Decode a graph of java beans
*
* @param xmlEncodedJavaBean an XML document
* @param exceptionListener the (optional) exception listener
*
* @return a graph of java beans; or null if
* the xmlEncodedJavaBean was null
*
* @throws ServiceException in case of TRANSFORMATION_FAILURE
*/
public static Object fromXML(
CharSequence xmlEncodedJavaBean,
ExceptionListener exceptionListener
) throws ServiceException{
try {
return transformer.decode(xmlEncodedJavaBean, exceptionListener);
} catch (RuntimeException exception) {
throw new ServiceException(
exception,
BasicException.Code.DEFAULT_DOMAIN,
BasicException.Code.TRANSFORMATION_FAILURE,
"Unable to convert Java Bean to XML"
);
}
}
/**
* Decode a graph of java beans
*
* @param xmlEncodedJavaBean an XML document
*
* @return a graph of java beans; or null if
* the xmlEncodedJavaBean was null
*
* @throws ServiceException in case of TRANSFORMATION_FAILURE
*/
public static Object fromXML(
CharSequence xmlEncodedJavaBean
) throws ServiceException{
return fromXML(
xmlEncodedJavaBean,
new JavaBeanExceptionListener(xmlEncodedJavaBean)
);
}
//------------------------------------------------------------------------
// Class JavaBeanExceptionListener
//------------------------------------------------------------------------
/**
* Java Bean Exception Listener
*/
private static class JavaBeanExceptionListener implements ExceptionListener {
/**
* Constructor
*
* @param source
*/
public JavaBeanExceptionListener(
Object source
) {
this.source = source;
}
/**
* The source to be encoded or decoded
*/
private Object source;
/* (non-Javadoc)
* @see org.openmdx.base.exception.ExceptionListener#exceptionThrown(java.lang.Exception)
*/
@Override
public void exceptionThrown(
Exception exception
) {
new ServiceException(
exception,
BasicException.Code.DEFAULT_DOMAIN,
BasicException.Code.PARSE_FAILURE,
"Unable to encode/decode JavaBean. Continuing...",
new BasicException.Parameter("target", this.source)
).log();
}
}
}