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java.lang.Object net.sf.saxon.trans.DynamicLoader
public class DynamicLoader
Utility class used to perform dynamic loading of user-hook implementations
Field Summary | |
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protected HashMap<String,Class> |
knownClasses
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Constructor Summary | |
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DynamicLoader()
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Method Summary | |
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Class |
getClass(String className,
PrintStream traceOut,
ClassLoader classLoader)
Load a class using the class name provided. |
ClassLoader |
getClassLoader()
Get the ClassLoader supplied using the method setClassLoader(java.lang.ClassLoader) . |
Object |
getInstance(String className,
ClassLoader classLoader)
Instantiate a class using the class name provided. |
Object |
getInstance(String className,
PrintStream traceOut,
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(ClassLoader loader)
Set a ClassLoader to be used when loading external classes. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected HashMap<String,Class> knownClasses
Constructor Detail |
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public DynamicLoader()
Method Detail |
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protected void registerKnownClasses()
public void setClassLoader(ClassLoader loader)
loader
- the ClassLoader to be used in this configurationpublic ClassLoader getClassLoader()
setClassLoader(java.lang.ClassLoader)
.
If none has been supplied, return null.
public Class getClass(String className, PrintStream traceOut, 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 Object getInstance(String className, 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 Object getInstance(String className, PrintStream traceOut, 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.
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