dap4.servlet

Class DSPFactory

java.lang.Object

dap4.servlet.DSPFactory

public abstract class DSPFactory
extends Object

Provide a factory for DSP instances

Field Summary

Fields

Modifier and Type	Field and Description
protected List<Class>	dspRegistry Define a map of known DSP classes.

Constructor Summary

Constructors

Constructor and Description
DSPFactory()

Method Summary

Methods

Modifier and Type	Method and Description
DSP	create(String path)
boolean	dspRegistered(Class klass) See if a specific DSP is registered
void	dspUnregister(Class klass) Unregister dsp.
void	registerDSP(Class klass) Register a DSP class.
void	registerDSP(Class klass, boolean last) Register a DSP class.
void	registerDSP(String className) Register a DSP, using its class string name.

Methods inherited from class java.lang.Object

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

Field Detail

dspRegistry

protected List<Class> dspRegistry

Define a map of known DSP classes.

Constructor Detail

DSPFactory

public DSPFactory()

Method Detail

registerDSP

public void registerDSP(String className)
                 throws DapException

Register a DSP, using its class string name.

Parameters:

className - Class that implements DSP.

Throws:

IllegalAccessException - if class is not accessible.

InstantiationException - if class doesnt have a no-arg constructor.

ClassNotFoundException - if class not found.

DapException

registerDSP

public void registerDSP(Class klass)

Register a DSP class.

Parameters:

klass - Class that implements DSP.

Throws:

IllegalAccessException - if class is not accessible.

InstantiationException - if class doesnt have a no-arg constructor.

ClassCastException - if class doesnt implement DSP interface.

registerDSP

public void registerDSP(Class klass,
               boolean last)

Register a DSP class.

Parameters:

klass - Class that implements DSP.

last - true=>insert at the end of the list; otherwise front

Throws:

IllegalAccessException - if class is not accessible.

InstantiationException - if class doesnt have a no-arg constructor.

ClassCastException - if class doesnt implement DSP interface.

dspRegistered

public boolean dspRegistered(Class klass)

See if a specific DSP is registered

Parameters:

klass - Class for which to search

dspUnregister

public void dspUnregister(Class klass)

Unregister dsp.

Parameters:

klass - Class for which to search

create

public DSP create(String path)
           throws DapException

Parameters:

path -

Returns:

DSP object that can process this path

Throws:

DapException