/*******************************************************************************
* This file is part of OpenNMS(R).
*
* Copyright (C) 2006-2011 The OpenNMS Group, Inc.
* OpenNMS(R) is Copyright (C) 1999-2011 The OpenNMS Group, Inc.
*
* OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
*
* OpenNMS(R) is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation, either version 3 of the License,
* or (at your option) any later version.
*
* OpenNMS(R) 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenNMS(R). If not, see:
* http://www.gnu.org/licenses/
*
* For more information contact:
* OpenNMS(R) Licensing <license@opennms.org>
* http://www.opennms.org/
* http://www.opennms.com/
*******************************************************************************/
package org.opennms.netmgt.eventd.db;
import java.io.StringWriter;
import org.opennms.core.utils.ThreadCategory;
import org.opennms.core.xml.JaxbUtils;
import org.opennms.netmgt.model.events.Constants;
import org.springframework.dao.DataAccessException;
/**
* This is an utility class used to format the event correlation info - to be
* inserted into the 'events' table - it simply returns the correlation as an
* 'XML' block
*
* @author <A HREF="mailto:sowmya@opennms.org">Sowmya Kumaraswamy </A>
* @author <A HREF="http://www.opennms.org/">OpenNMS </A>
* @see org.opennms.netmgt.model.events.Constants#VALUE_TRUNCATE_INDICATOR
*/
public class Correlation {
/**
* Format the correlation block to have the xml
*
* @param ec
* the correlation
* @param sz
* the size to which the formatted string is to be limited
* to(usually the size of the column in the database)
* @return the formatted event correlation
*/
public static String format(final org.opennms.netmgt.xml.event.Correlation ec, final int sz) {
StringWriter out = new StringWriter();
try {
JaxbUtils.marshal(ec, out);
} catch (DataAccessException e) {
ThreadCategory.getInstance(Correlation.class).error("Failed to convert new event to XML", e);
return null;
}
String outstr = out.toString();
if (outstr.length() >= sz) {
StringBuffer buf = new StringBuffer(outstr);
buf.setLength(sz - 4);
buf.append(Constants.VALUE_TRUNCATE_INDICATOR);
return buf.toString();
} else {
return outstr;
}
}
}