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edu.iicm.xpg.util
Class Factory
java.lang.Objectedu.iicm.xpg.util.Factory
- public class Factory
- extends java.lang.Object
This is a simple factory implementation. DFactory consists of a search method for looking up a Class Object within a given SearchPath. The search method returns a new Instance of the requested class. Furthermore there is a method getSearchPath and setSearchPath to get and set the class search path, wich consists of a stringarray of packagenames.
- Version:
- $Revision: 1.1 $
| Field Summary | |
private java.util.Hashtable |
cache_
class cache Hashtable |
private java.lang.String[] |
path_
String Array for the class search path |
| Constructor Summary | |
Factory()
The default constructor |
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Factory(java.lang.String[] path)
Another constructor with the search path as argument. |
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| Method Summary | |
void |
appendSearchPath(java.lang.String path)
This method appends a path to the current SearchPath. |
void |
clearClassCache()
Just for clearing the cache... |
java.lang.Object |
getInstance(java.lang.String partly_qualified_classname)
getInstance(String partly_qualified_classname) tries to find an object a in one of the packagenames within the search path and returns a new Instance of the found object or throws a ClassNotFoundException. |
java.lang.String[] |
getSearchPath()
This method returns the current search path and throws an IllegalStateException if the search path is null |
int |
getSearchPathIndex(java.lang.String path)
This method returns the position the path |
protected void |
insertPath(java.lang.String path,
int position)
This method inserts the path at the position in the current SearchPath. |
void |
insertSearchPath(java.lang.String path,
int position)
This method inserts the path at the position in the current SearchPath. |
boolean |
isSearchPathRegistered(java.lang.String path)
This method checks if a path is in the current SearchPath |
void |
removeLastSearchPath()
This method removes the last path of the SearchPath. |
void |
removeSearchPath(int position)
This method removes the path on a specified position of the SearchPath. |
void |
removeSearchPath(java.lang.String path)
This method removes the path to the SearchPath. |
void |
reverseSearchPath()
This method reverse the strings in the string array. |
void |
setSearchPath(java.lang.String[] path)
This method sets the seach Path and clears the class cache to prevent the returnation of Objects from the wrong packages |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
path_
private java.lang.String[] path_
- String Array for the class search path
cache_
private java.util.Hashtable cache_
- class cache Hashtable
| Constructor Detail |
Factory
public Factory()
- The default constructor
Factory
public Factory(java.lang.String[] path)
- Another constructor with the search path as argument.
| Method Detail |
setSearchPath
public void setSearchPath(java.lang.String[] path) throws java.lang.IllegalArgumentException
- This method sets the seach Path and clears the class cache
to prevent the returnation of Objects from the wrong packages
getSearchPath
public java.lang.String[] getSearchPath() throws java.lang.IllegalStateException
- This method returns the current search path and throws an
IllegalStateException if the search path is null
getInstance
public java.lang.Object getInstance(java.lang.String partly_qualified_classname) throws java.lang.ClassNotFoundException, java.lang.LinkageError, java.lang.ExceptionInInitializerError, java.lang.IllegalArgumentException, java.lang.IllegalStateException, java.io.IOException
- getInstance(String partly_qualified_classname) tries to find an object a
in one of the packagenames within the search path and returns
a new Instance of the found object or throws a ClassNotFoundException.
clearClassCache
public void clearClassCache()
- Just for clearing the cache...
getSearchPathIndex
public int getSearchPathIndex(java.lang.String path) throws java.lang.IllegalStateException
- This method returns the position the path
isSearchPathRegistered
public boolean isSearchPathRegistered(java.lang.String path) throws java.lang.IllegalStateException
- This method checks if a path is in the current SearchPath
appendSearchPath
public void appendSearchPath(java.lang.String path) throws java.lang.IllegalStateException, java.lang.IllegalArgumentException
- This method appends a path to the current SearchPath.
insertSearchPath
public void insertSearchPath(java.lang.String path, int position) throws java.lang.IllegalStateException, java.lang.IllegalArgumentException
- This method inserts the path at the position in the current SearchPath.
insertPath
protected void insertPath(java.lang.String path, int position) throws java.lang.IllegalStateException, java.lang.IllegalArgumentException
- This method inserts the path at the position in the current SearchPath.
removeSearchPath
public void removeSearchPath(java.lang.String path) throws java.lang.IllegalStateException, java.lang.IllegalStateException
- This method removes the path to the SearchPath.
removeLastSearchPath
public void removeLastSearchPath()
throws java.lang.IllegalStateException
- This method removes the last path of the SearchPath.
removeSearchPath
public void removeSearchPath(int position)
throws java.lang.IllegalStateException,
java.lang.IllegalArgumentException
- This method removes the path on a specified position of the SearchPath.
reverseSearchPath
public void reverseSearchPath()
throws java.lang.IllegalStateException
- This method reverse the strings in the string array.
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DETAIL: FIELD | CONSTR | METHOD | ||||||||