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Java Source Code / Java Documentation » Web Server » jo » com.tagtraum.framework.util 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   com.tagtraum.framework.util.Factory

All known Subclasses:   com.tagtraum.framework.recycler.Recycler,
Factory
public class Factory (Code)
Configurable universal Factory.
author:
   Hendrik Schreiber
version:
   1.1beta1 $Id: Factory.java,v 1.5 2003/09/13 04:59:56 hendriks73 Exp $


Field Summary
protected  HashMapmyAliases
     Hashmap with aliases that point at classnames.
protected static  FactorymyFactory
     "Almost" Singleton.
protected  ArrayListmyPackages
     Packagepaths.
public static  Stringvcid
     Source-Version.


Method Summary
public synchronized  voidaddAlias(String anAlias, String anAliasedName)
     Adds an alias.
Parameters:
  anAlias - the new alias
Parameters:
  anAliasedName - name that denotes an alias.
public synchronized  voidaddAliases(Hashtable aliases)
     Sets aliases from a Hastable.
public synchronized  voidaddPackagePath(String path)
     Adds a path to the internal search path.
Example: addPackagePath("java.lang"); When looking for a class the package paths a searched in the same order they were added.
public  Objectget(String className)
     Returns a new instance of the class.
public  Objectget(String className, ClassLoader aClassLoader)
     Returns a new instance of the class.
public  ClassgetClassForName(String name)
     Returns a java.lang-Class object for an alias or classname.
public  ClassgetClassForName(String name, ClassLoader cl)
     Returns a java.lang-Class object for an alias or classname.
public static  FactorygetFactory()
     Instantiates if necessary a Factory.
protected  StringnormalizePath(String path)
     Helper method that normalizes paths.
public  IteratorpackagePaths()
     Return an Iterator for the import paths.
public synchronized  voidremoveAlias(String anAlias)
     Removes an alias.
public synchronized  voidremoveAllAliases()
     Removes all aliases.
public synchronized  voidremovePackagePath(String path)
    
public synchronized  StringresolveAlias(String anAlias)
     Resolves an alias.

Field Detail
myAliases
protected HashMap myAliases(Code)
Hashmap with aliases that point at classnames.



myFactory
protected static Factory myFactory(Code)
"Almost" Singleton.



myPackages
protected ArrayList myPackages(Code)
Packagepaths.



vcid
public static String vcid(Code)
Source-Version.





Method Detail
addAlias
public synchronized void addAlias(String anAlias, String anAliasedName)(Code)
Adds an alias.
Parameters:
  anAlias - the new alias
Parameters:
  anAliasedName - name that denotes an alias. Note that thiscan be an alias itself, but circles are not allowed



addAliases
public synchronized void addAliases(Hashtable aliases)(Code)
Sets aliases from a Hastable. This method is usefull when using Properties.



addPackagePath
public synchronized void addPackagePath(String path)(Code)
Adds a path to the internal search path.
Example: addPackagePath("java.lang"); When looking for a class the package paths a searched in the same order they were added.
Parameters:
  path - importpath



get
public Object get(String className) throws FactoryException(Code)
Returns a new instance of the class. Alias resloving is used.
Parameters:
  className - name or alias of the class ro instantiate
exception:
  FactoryException - if the class could not be instantiated



get
public Object get(String className, ClassLoader aClassLoader) throws FactoryException(Code)
Returns a new instance of the class. Alias resloving is used.
Parameters:
  className - name or alias of the class ro instantiate
Parameters:
  aClassLoader - the ClassLoader to use
exception:
  FactoryException - if the class could not be instantiated



getClassForName
public Class getClassForName(String name) throws ClassNotFoundException(Code)
Returns a java.lang-Class object for an alias or classname. To achieve this first the internal class cache is checked, then Class.forName(String) is used with name and all package paths.
exception:
  ClassNotFoundException - if the class could not be found
Parameters:
  name - the class's full name, the class name or an alias the searched class object



getClassForName
public Class getClassForName(String name, ClassLoader cl) throws ClassNotFoundException(Code)
Returns a java.lang-Class object for an alias or classname. To achieve this first the internal class cache is checked, then Class.forName(String) is used with name and all package paths.
exception:
  ClassNotFoundException - if the class could not be found
Parameters:
  name - the class's full name, the class name or an alias
Parameters:
  cl - ClassLoader to use. the searched class object



getFactory
public static Factory getFactory()(Code)
Instantiates if necessary a Factory. Is already one present this is returned. Factory-Singleton



normalizePath
protected String normalizePath(String path)(Code)
Helper method that normalizes paths. the normalized path
Parameters:
  path - path to normalize



packagePaths
public Iterator packagePaths()(Code)
Return an Iterator for the import paths. Iterator for the import paths.



removeAlias
public synchronized void removeAlias(String anAlias)(Code)
Removes an alias.
Parameters:
  anAlias - alias to remove



removeAllAliases
public synchronized void removeAllAliases()(Code)
Removes all aliases.



removePackagePath
public synchronized void removePackagePath(String path)(Code)
Removes a path from the internal search path
Parameters:
  path - path to remove



resolveAlias
public synchronized String resolveAlias(String anAlias)(Code)
Resolves an alias.
Parameters:
  anAlias - alias to resolve the resolved alias or the alias itself if itis not resolvable



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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