dap4.core.data

Class DSPRegistry

java.lang.Object

dap4.core.data.DSPRegistry

public class DSPRegistry
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	DSPRegistry.Registration

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	FIRST
static boolean	LAST
protected static java.lang.ClassLoader	loader
protected java.util.List<DSPRegistry.Registration>	registry Define a map of known DSP classes.

Constructor Summary

Constructors

Constructor and Description
DSPRegistry()

Method Summary

Modifier and Type	Method and Description
DSP	findMatchingDSP(java.lang.String path, DapContext cxt)
void	register(java.lang.Class<? extends DSP> klass, boolean last) Register a DSP class.
void	register(java.lang.String className, boolean last) Register a DSP, using its class string name.
boolean	registered(java.lang.Class<? extends DSP> klass) See if a specific DSP is registered
static void	setLoader(java.lang.ClassLoader ldr)
void	unregister(java.lang.Class<? extends DSP> klass) Unregister dsp.

Methods inherited from class java.lang.Object

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

Field Detail

LAST

public static final boolean LAST

See Also:

Constant Field Values

FIRST

public static final boolean FIRST

See Also:

Constant Field Values

loader

protected static java.lang.ClassLoader loader

registry

protected java.util.List<DSPRegistry.Registration> registry

Define a map of known DSP classes. Must be ordered to allow control over test order

Constructor Detail

DSPRegistry

public DSPRegistry()

Method Detail

setLoader

public static void setLoader(java.lang.ClassLoader ldr)

register

public void register(java.lang.String className,
                     boolean last)
              throws DapException

Register a DSP, using its class string name.

Parameters:

className - Name of class that implements DSP.

Throws:

java.lang.IllegalAccessException - if class is not accessible.

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

java.lang.ClassNotFoundException - if class not found.

DapException

register

public void register(java.lang.Class<? extends DSP> 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:

java.lang.IllegalAccessException - if class is not accessible.

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

java.lang.ClassCastException - if class doesnt implement DSP interface.

registered

public boolean registered(java.lang.Class<? extends DSP> klass)

See if a specific DSP is registered

Parameters:

klass - Class for which to search

unregister

public void unregister(java.lang.Class<? extends DSP> klass)

Unregister dsp.

Parameters:

klass - Class for which to search

findMatchingDSP

public DSP findMatchingDSP(java.lang.String path,
                           DapContext cxt)
                    throws DapException

Parameters:

path -

Returns:

new DSP object that can process this path

Throws:

DapException