parameter.java

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//
// This file is part of the OpenNMS(R) Application.
//
// OpenNMS(R) is Copyright (C) 2002-2003 The OpenNMS Group, Inc.  All rights reserved.
// OpenNMS(R) is a derivative work, containing both original code, included code and modified
// code that was published under the GNU General Public License. Copyrights for modified 
// and included code are below.
//
// OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
//
// Copyright (C) 1999-2001 Oculan Corp.  All rights reserved.
//
// This program 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 2 of the License, or
// (at your option) any later version.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//       
// For more information contact: 
//      OpenNMS Licensing       <[e-mail]>
//      http://www.opennms.org/
//      http://www.opennms.com/
//
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package org.opennms.netmgt.eventd.db;

import java.util.Enumeration;

import org.opennms.netmgt.xml.event.Parm;
import org.opennms.netmgt.xml.event.Parms;
import org.opennms.netmgt.xml.event.Value;

/**
 * This is an utility class used to format the event parameters - to be inserted
 * into the 'events' table
 * 
 * @author <A HREF="mailto:[e-mail]">Brian Weaver </A>
 * @author <A HREF="http://www.opennms.org">OpenNMS </A>
 */
public final class Parameter {
    /**
     * Format the list of event paramaters
     * 
     * @param parms
     *            the list
     * 
     * @return the formatted event parameters string
     */
    public static String format(Parms parms) {
        boolean first = true;

        Enumeration en = parms.enumerateParm();

        StringBuffer parmbuf = new StringBuffer();
        while (en.hasMoreElements()) {
            Parm parm = (Parm) en.nextElement();
            if (!first)
                parmbuf.append(Constants.MULTIPLE_VAL_DELIM);
            parmbuf.append(format(parm));
            first = false;
        }

        return parmbuf.toString();
    }

    /**
     * Format each parameter
     * 
     * @param parm
     *            the parameter
     * 
     * @return the formatted event parameter string
     */
    public static String format(Parm parm) {
        Value pValue = parm.getValue();

        String type = pValue.getType();
        String encoding = pValue.getEncoding();

        String tmp = Constants.escape(parm.getParmName(), Constants.NAME_VAL_DELIM);
        String name = Constants.escape(tmp, Constants.MULTIPLE_VAL_DELIM);
        tmp = Constants.escape(pValue.getContent(), Constants.NAME_VAL_DELIM);
        String value = Constants.escape(tmp, Constants.MULTIPLE_VAL_DELIM);

        String empty = "";
        name = (name != null ? name.trim() : empty);
        value = (value != null ? value.trim() : empty);
        type = (type != null ? type.trim() : empty);
        encoding = (encoding != null ? encoding.trim() : empty);

        StringBuffer buf = new StringBuffer();
        buf.append(name);
        buf.append(Constants.NAME_VAL_DELIM);
        buf.append(value);
        buf.append('(');
        buf.append(type);
        buf.append(Constants.DB_ATTRIB_DELIM);
        buf.append(encoding);
        buf.append(')');

        return buf.toString();
        // return name + Constants.NAME_VAL_DELIM + value + "(" + type +
        // Constants.DB_ATTRIB_DELIM + encoding + ")";
    }
}