/*
* Conditions Of Use
*
* This software was developed by employees of the National Institute of
* Standards and Technology (NIST), an agency of the Federal Government.
* Pursuant to title 15 Untied States Code Section 105, works of NIST
* employees are not subject to copyright protection in the United States
* and are considered to be in the public domain. As a result, a formal
* license is not needed to use the software.
*
* This software is provided by NIST as a service and is expressly
* provided "AS IS." NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
* OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
* AND DATA ACCURACY. NIST does not warrant or make any representations
* regarding the use of the software or the results thereof, including but
* not limited to the correctness, accuracy, reliability or usefulness of
* the software.
*
* Permission to use this software is contingent upon your acceptance
* of the terms of this agreement
*
* .
*
*/
package gov.nist.javax.sdp.parser;
import java.util.*;
import gov.nist.core.*;
import java.text.ParseException;
import java.lang.reflect.*;
/** Factory for creating parsers for the SDP stuff.
*
*@version 1.2
*
*@author M. Ranganathan <br/>
*
*
*/
public class ParserFactory {
private static Hashtable parserTable;
private static Class[] constructorArgs;
private static final String packageName =
PackageNames.SDP_PACKAGE + ".parser";
private static Class getParser(String parserClass) {
try {
return Class.forName(packageName + "." + parserClass);
} catch (ClassNotFoundException ex) {
System.out.println("Could not find class");
ex.printStackTrace();
System.exit(0);
return null; // dummy
}
}
static {
constructorArgs = new Class[1];
constructorArgs[0] = String.class;
parserTable = new Hashtable();
parserTable.put("a", getParser("AttributeFieldParser"));
parserTable.put("b", getParser("BandwidthFieldParser"));
parserTable.put("c", getParser("ConnectionFieldParser"));
parserTable.put("e", getParser("EmailFieldParser"));
parserTable.put("i", getParser("InformationFieldParser"));
parserTable.put("k", getParser("KeyFieldParser"));
parserTable.put("m", getParser("MediaFieldParser"));
parserTable.put("o", getParser("OriginFieldParser"));
parserTable.put("p", getParser("PhoneFieldParser"));
parserTable.put("v", getParser("ProtoVersionFieldParser"));
parserTable.put("r", getParser("RepeatFieldParser"));
parserTable.put("s", getParser("SessionNameFieldParser"));
parserTable.put("t", getParser("TimeFieldParser"));
parserTable.put("u", getParser("URIFieldParser"));
parserTable.put("z", getParser("ZoneFieldParser"));
}
public static SDPParser createParser(String field) throws ParseException {
String fieldName = Lexer.getFieldName(field);
if (fieldName == null)
return null;
Class parserClass = (Class) parserTable.get(fieldName.toLowerCase());
if (parserClass != null) {
try {
Constructor cons = parserClass.getConstructor(constructorArgs);
Object[] args = new Object[1];
args[0] = field;
SDPParser retval = (SDPParser) cons.newInstance(args);
return retval;
} catch (Exception ex) {
InternalErrorHandler.handleException(ex);
return null; // to placate the compiler.
}
} else
throw new ParseException(
"Could not find parser for " + fieldName,
0);
}
}
/*
* $Log: not supported by cvs2svn $
* Revision 1.5 2006/07/13 09:02:33 mranga
* Issue number:
* Obtained from:
* Submitted by: jeroen van bemmel
* Reviewed by: mranga
* Moved some changes from jain-sip-1.2 to java.net
*
* CVS: ----------------------------------------------------------------------
* CVS: Issue number:
* CVS: If this change addresses one or more issues,
* CVS: then enter the issue number(s) here.
* CVS: Obtained from:
* CVS: If this change has been taken from another system,
* CVS: then name the system in this line, otherwise delete it.
* CVS: Submitted by:
* CVS: If this code has been contributed to the project by someone else; i.e.,
* CVS: they sent us a patch or a set of diffs, then include their name/email
* CVS: address here. If this is your work then delete this line.
* CVS: Reviewed by:
* CVS: If we are doing pre-commit code reviews and someone else has
* CVS: reviewed your changes, include their name(s) here.
* CVS: If you have not had it reviewed then delete this line.
*
* Revision 1.3 2006/06/19 06:47:26 mranga
* javadoc fixups
*
* Revision 1.2 2006/06/16 15:26:28 mranga
* Added NIST disclaimer to all public domain files. Clean up some javadoc. Fixed a leak
*
* Revision 1.1.1.1 2005/10/04 17:12:34 mranga
*
* Import
*
*
* Revision 1.3 2005/04/04 09:29:02 dmuresan
* Replaced new String().getClass() with String.class.
*
* Revision 1.2 2004/01/22 13:26:28 sverker
* Issue number:
* Obtained from:
* Submitted by: sverker
* Reviewed by: mranga
*
* Major reformat of code to conform with style guide. Resolved compiler and javadoc warnings. Added CVS tags.
*
* CVS: ----------------------------------------------------------------------
* CVS: Issue number:
* CVS: If this change addresses one or more issues,
* CVS: then enter the issue number(s) here.
* CVS: Obtained from:
* CVS: If this change has been taken from another system,
* CVS: then name the system in this line, otherwise delete it.
* CVS: Submitted by:
* CVS: If this code has been contributed to the project by someone else; i.e.,
* CVS: they sent us a patch or a set of diffs, then include their name/email
* CVS: address here. If this is your work then delete this line.
* CVS: Reviewed by:
* CVS: If we are doing pre-commit code reviews and someone else has
* CVS: reviewed your changes, include their name(s) here.
* CVS: If you have not had it reviewed then delete this line.
*
*/