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/*
* ====================================================================
* Project: openMDX/Core, http://www.openmdx.org/
* Description: AbstractHandler
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 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.rest.spi;
import org.openmdx.base.xml.spi.LargeObjectWriter;
import org.openmdx.kernel.collection.ArraysExtension;
import org.openmdx.kernel.exception.BasicException;
import org.openmdx.kernel.exception.Throwables;
import org.w3c.cci2.BinaryLargeObject;
import org.w3c.cci2.CharacterLargeObject;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.helpers.DefaultHandler;
/**
* Error handler and content handler for character data
*/
class AbstractHandler extends DefaultHandler implements LargeObjectWriter {
/**
* Constructor
*/
AbstractHandler() {
}
/**
* The character data
*/
private final StringBuilder characterData = new StringBuilder();
/**
* Tells whether some character data has been read.
*/
private boolean hasCharacterData = false;
/**
* binary data
*/
private byte[] binaryData = null;
/**
* Tells whether there is either character or binary content available
*
* @return true if some content is available
*/
protected boolean hasData(
){
return this.hasCharacterData || binaryData != null;
}
/**
* Retrieve the elements character data
*
* @return the elements character data
*/
protected Object getData() {
return this.hasCharacterData ? characterData.toString() : this.binaryData;
}
@Override
public void error(
SAXParseException exception
) throws SAXException {
StringBuilder locationString = new StringBuilder();
String systemId = exception.getSystemId();
if (systemId != null) {
int index = systemId.lastIndexOf('/');
if (index != -1) {
systemId = systemId.substring(index + 1);
}
locationString.append(systemId);
}
locationString.append(
':'
).append(
exception.getLineNumber()
).append(
':'
).append(
exception.getColumnNumber()
);
throw Throwables.log(
BasicException.initHolder(
new SAXException(
"XML parse error",
BasicException.newEmbeddedExceptionStack(
exception,
BasicException.Code.DEFAULT_DOMAIN,
BasicException.Code.PROCESSING_FAILURE,
new BasicException.Parameter("message", exception.getMessage()),
new BasicException.Parameter("location", locationString),
new BasicException.Parameter("systemId", systemId),
new BasicException.Parameter("lineNumber", exception.getLineNumber()),
new BasicException.Parameter("columnNumber", exception.getColumnNumber())
)
)
)
);
}
@Override
public void characters(
char[] ch,
int start,
int length
) throws SAXException {
this.hasCharacterData = true;
this.characterData.append(ch, start, length);
}
@Override
public void startElement(
String uri,
String localName,
String name,
Attributes attributes)
throws SAXException {
this.hasCharacterData = false;
this.characterData.setLength(0);
this.binaryData = null;
}
/* (non-Javadoc)
* @see org.openmdx.base.xml.stream.LargeObjectWriter#writeBinaryData(byte[], int, int)
*/
// @Override
public void writeBinaryData(
byte[] data,
int offset,
int length
){
this.binaryData = offset == 0 && length == data.length ? data : ArraysExtension.copyOfRange(data, offset, offset + length);
}
/* (non-Javadoc)
* @see org.openmdx.base.xml.stream.LargeObjectWriter#writeBinaryData(org.w3c.cci2.BinaryLargeObject)
*/
// @Override
public void writeBinaryData(
BinaryLargeObject data
){
throw new UnsupportedOperationException("Large object streaming not yet implemented");
}
/* (non-Javadoc)
* @see org.openmdx.base.xml.stream.LargeObjectWriter#writeCharacterData(org.w3c.cci2.CharacterLargeObject)
*/
// @Override
public void writeCharacterData(
CharacterLargeObject data
){
throw new UnsupportedOperationException("Large object streaming not yet implemented");
}
}
