org.freehep.util
Class Factory

java.lang.Object
  |
  +--org.freehep.util.Factory

public class Factory

extends Object

Methods to use factories (a la JAXP).

Version:

$Id: Factory.java,v 1.5 2002/06/12 23:15:16 duns Exp $

Author:

Mark Donszelmann

Method Summary

static String	findFactory(String factoryName, String factoryFile, String defaultFactory) Find the correct factory name, based on the following procedure: Use the specified system property: factoryName.
static Object	loadFactory(String name, String file, String defaultImplementation)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

findFactory

public static String findFactory(String factoryName,
                                 String factoryFile,
                                 String defaultFactory)

Find the correct factory name, based on the following procedure:

1. Use the specified system property: factoryName.
2. Use the specified property file in JAVA_HOME/lib/ and the specified property: factoryName.
3. Use the Services API (as detailed in the JAR specification) to look for the classname in META-INF/services/.
4. Use the specfied default factory: defaultFactory.

Parameters:

factoryName - name to be used for lookup

factoryFile - filename to look for in JAVA_HOME/lib

Returns:

the name of the factory according to the procedure above

loadFactory

public static Object loadFactory(String name,
                                 String file,
                                 String defaultImplementation)