|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectnet.sf.saxon.trans.DynamicLoader
public class DynamicLoader
Utility class used to perform dynamic loading of user-hook implementations
Field Summary | |
---|---|
protected java.util.HashMap<java.lang.String,java.lang.Class> |
knownClasses
|
Constructor Summary | |
---|---|
DynamicLoader()
|
Method Summary | |
---|---|
java.lang.Class |
getClass(java.lang.String className,
java.io.PrintStream traceOut,
java.lang.ClassLoader classLoader)
Load a class using the class name provided. |
java.lang.ClassLoader |
getClassLoader()
Get the ClassLoader supplied using the method setClassLoader(java.lang.ClassLoader) . |
java.lang.Object |
getInstance(java.lang.String className,
java.lang.ClassLoader classLoader)
Instantiate a class using the class name provided. |
java.lang.Object |
getInstance(java.lang.String className,
java.io.PrintStream traceOut,
java.lang.ClassLoader classLoader)
Instantiate a class using the class name provided, with the option of tracing Note that the method does not check that the object is of the right class. |
protected void |
registerKnownClasses()
Register classes that might be dynamically loaded even though they are contained within Saxon itself. |
void |
setClassLoader(java.lang.ClassLoader loader)
Set a ClassLoader to be used when loading external classes. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
protected java.util.HashMap<java.lang.String,java.lang.Class> knownClasses
Constructor Detail |
---|
public DynamicLoader()
Method Detail |
---|
protected void registerKnownClasses()
public void setClassLoader(java.lang.ClassLoader loader)
loader
- the ClassLoader to be used in this configurationpublic java.lang.ClassLoader getClassLoader()
setClassLoader(java.lang.ClassLoader)
.
If none has been supplied, return null.
public java.lang.Class getClass(java.lang.String className, java.io.PrintStream traceOut, java.lang.ClassLoader classLoader) throws XPathException
This method is intended for internal use only.
className
- A string containing the name of the
class, for example "com.microstar.sax.LarkDriver"traceOut
- if diagnostic tracing is required, the destination for the output; otherwise nullclassLoader
- The ClassLoader to be used to load the class. If this is null, then
the classLoader used will be the first one available of: the classLoader registered
with the Configuration using setClassLoader(java.lang.ClassLoader)
; the context class loader for
the current thread; or failing that, the class loader invoked implicitly by a call
of Class.forName() (which is the ClassLoader that was used to load the Configuration
object itself).
XPathException
- if the class cannot be loaded.public java.lang.Object getInstance(java.lang.String className, java.lang.ClassLoader classLoader) throws XPathException
This method is intended for internal use only.
className
- A string containing the name of the
class, for example "com.microstar.sax.LarkDriver"classLoader
- The ClassLoader to be used to load the class. If this is null, then
the classLoader used will be the first one available of: the classLoader registered
with the Configuration using setClassLoader(java.lang.ClassLoader)
; the context class loader for
the current thread; or failing that, the class loader invoked implicitly by a call
of Class.forName() (which is the ClassLoader that was used to load the Configuration
object itself).
XPathException
- if the class cannot be loaded.public java.lang.Object getInstance(java.lang.String className, java.io.PrintStream traceOut, java.lang.ClassLoader classLoader) throws XPathException
This method is intended for internal use only.
className
- A string containing the name of the
class, for example "com.microstar.sax.LarkDriver"traceOut
- if attempts to load classes are to be traced, then the destination
for the trace output; otherwise nullclassLoader
- The ClassLoader to be used to load the class. If this is null, then
the classLoader used will be the first one available of: the classLoader registered
with the Configuration using setClassLoader(java.lang.ClassLoader)
; the context class loader for
the current thread; or failing that, the class loader invoked implicitly by a call
of Class.forName() (which is the ClassLoader that was used to load the Configuration
object itself).
XPathException
- if the class cannot be loaded.
|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |