oracle.cabo.share.io
Class InputStreamProviderProxy

java.lang.Object
  |
  +--oracle.cabo.share.io.InputStreamProviderProxy

All Implemented Interfaces:

InputStreamProvider

public abstract class InputStreamProviderProxy

extends java.lang.Object

implements InputStreamProvider

Proxying class for InputStreamProviders. Subclassers must override getProvider().

Constructor Summary

InputStreamProviderProxy()
Create an InputStreamProviderProxy.

Method Summary

boolean	equals(java.lang.Object o)
java.lang.Object	getCachedResult() Returns the cached result from reading and parsing this provider.
java.lang.String	getDisplayName() Returns the name of the target location, suitable for user display.
java.lang.Object	getIdentifier() Returns an identifier object that uniquely identifies the target location.
protected abstract InputStreamProvider	getProvider() Return the provider being proxied.
boolean	hasSourceChanged() Returns true if the underlying target has changed since the last call to openInputStream()
java.io.InputStream	openInputStream() Return an InputStream for the target.
void	setCachedResult(java.lang.Object value) Stores the cached result of reading and parsing this provider.

Methods inherited from class java.lang.Object

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

Constructor Detail

InputStreamProviderProxy

public InputStreamProviderProxy()

Create an InputStreamProviderProxy.

Method Detail

getProvider

protected abstract InputStreamProvider getProvider()

Return the provider being proxied.

openInputStream

public java.io.InputStream openInputStream()
                                    throws java.io.IOException

Description copied from interface: InputStreamProvider

Return an InputStream for the target. This function should never return null - if a stream cannot be opened, throw an IOException.

Specified by:

openInputStream in interface InputStreamProvider

getDisplayName

public java.lang.String getDisplayName()

Description copied from interface: InputStreamProvider

Returns the name of the target location, suitable for user display.

Specified by:

getDisplayName in interface InputStreamProvider

getIdentifier

public java.lang.Object getIdentifier()

Description copied from interface: InputStreamProvider

Returns an identifier object that uniquely identifies the target location. If two providers return equal identifiers, that is, given:

   Object identifierA = providerA.getIdentifier();
   Object identifierB = providerB.getIdentifier();
 

... then:

   if (identifierA.equals(identifierB)) ...
 

then the two providers must point to the same location.

Specified by:

getIdentifier in interface InputStreamProvider

hasSourceChanged

public boolean hasSourceChanged()

Description copied from interface: InputStreamProvider

Returns true if the underlying target has changed since the last call to openInputStream()

Specified by:

hasSourceChanged in interface InputStreamProvider

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

getCachedResult

public java.lang.Object getCachedResult()

Description copied from interface: InputStreamProvider

Returns the cached result from reading and parsing this provider.

Specified by:

getCachedResult in interface InputStreamProvider

Following copied from interface: oracle.cabo.share.io.InputStreamProvider

See Also:

CachingNameResolver

setCachedResult

public void setCachedResult(java.lang.Object value)

Description copied from interface: InputStreamProvider

Stores the cached result of reading and parsing this provider.

Specified by:

setCachedResult in interface InputStreamProvider

Following copied from interface: oracle.cabo.share.io.InputStreamProvider

See Also:

CachingNameResolver