org.eclipse.emf.ecore.resource.impl
Class ArchiveURIHandlerImpl

java.lang.Object
  org.eclipse.emf.ecore.resource.impl.URIHandlerImpl
      org.eclipse.emf.ecore.resource.impl.ArchiveURIHandlerImpl

All Implemented Interfaces:

URIHandler

public class ArchiveURIHandlerImpl
extends URIHandlerImpl

Nested Class Summary

protected class

ArchiveURIHandlerImpl.Archive A specialized class for reading from an archive.

Field Summary

Fields inherited from interface org.eclipse.emf.ecore.resource.URIHandler

DEFAULT_HANDLERS

Constructor Summary

ArchiveURIHandlerImpl()
Creates an instance.

Method Summary

boolean	canHandle(URI uri) This implementation always returns true; clients are generally expected to override this.
protected ArchiveURIHandlerImpl.Archive	createArchive(URI uri, java.util.Map<?,?> options)
java.io.InputStream	createInputStream(URI uri, java.util.Map<?,?> options) Creates an input stream for the URI, assuming it's a URL, and returns it.
java.io.OutputStream	createOutputStream(URI uri, java.util.Map<?,?> options) Creates an output stream for the URI, assuming it's a URL, and returns it.
void	delete(URI uri, java.util.Map<?,?> options) Only HTTP connections support delete.
boolean	exists(URI uri, java.util.Map<?,?> options) If a stream can be created the file exists.
java.util.Map<java.lang.String,?>	getAttributes(URI uri, java.util.Map<?,?> options) Returns a map from String attributes to their corresponding values representing information about various aspects of the URI's state.
void	setAttributes(URI uri, java.util.Map<java.lang.String,?> attributes, java.util.Map<?,?> options) Updates the map from String attributes to their corresponding values representing information about various aspects of the URI's state.

Methods inherited from class org.eclipse.emf.ecore.resource.impl.URIHandlerImpl

contentDescription, getRequestedAttributes, getResponse, getURIConverter

Methods inherited from class java.lang.Object

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

Constructor Detail

ArchiveURIHandlerImpl

public ArchiveURIHandlerImpl()

Creates an instance.

Method Detail

canHandle

public boolean canHandle(URI uri)

Description copied from class: URIHandlerImpl

This implementation always returns true; clients are generally expected to override this.

Specified by:

canHandle in interface URIHandler

Overrides:

canHandle in class URIHandlerImpl

Parameters:

uri - the URI to consider.

Returns:

whether this handler is appropriate for the given URI.

createOutputStream

public java.io.OutputStream createOutputStream(URI uri,
                                               java.util.Map<?,?> options)
                                        throws java.io.IOException

Description copied from class: URIHandlerImpl

Creates an output stream for the URI, assuming it's a URL, and returns it. Specialized support is provided for HTTP URLs.

Specified by:

createOutputStream in interface URIHandler

Overrides:

createOutputStream in class URIHandlerImpl

Parameters:

uri - the URI for which to create the output stream.

options - a map of options to influence the kind of stream that is returned; unrecognized options are ignored and null is permitted.

Returns:

an open output stream.

Throws:

java.io.IOException - if there is a problem obtaining an open output stream.

See Also:

URIConverter.createOutputStream(URI, Map)

createInputStream

public java.io.InputStream createInputStream(URI uri,
                                             java.util.Map<?,?> options)
                                      throws java.io.IOException

Description copied from class: URIHandlerImpl

Creates an input stream for the URI, assuming it's a URL, and returns it.

Specified by:

createInputStream in interface URIHandler

Overrides:

createInputStream in class URIHandlerImpl

Parameters:

uri - the URI for which to create the input stream.

options - a map of options to influence the kind of stream that is returned; unrecognized options are ignored and null is permitted.

Returns:

an open input stream.

Throws:

java.io.IOException - if there is a problem obtaining an open input stream.

See Also:

URIConverter.createInputStream(URI, Map)

delete

public void delete(URI uri,
                   java.util.Map<?,?> options)
            throws java.io.IOException

Description copied from class: URIHandlerImpl

Only HTTP connections support delete.

Specified by:

delete in interface URIHandler

Overrides:

delete in class URIHandlerImpl

Parameters:

uri - the URI to consider.

options - options to influence how the contents are deleted.

Throws:

java.io.IOException - if there is a problem deleting the contents.

See Also:

URIConverter.delete(URI, Map)

exists

public boolean exists(URI uri,
                      java.util.Map<?,?> options)

Description copied from class: URIHandlerImpl

If a stream can be created the file exists. Specialized support is provided for HTTP connections to avoid fetching the whole stream in that case.

Specified by:

exists in interface URIHandler

Overrides:

exists in class URIHandlerImpl

Parameters:

uri - the URI to consider.

options - options to influence how the existence determined.

Returns:

whether the given URI has contents.

See Also:

URIConverter.exists(URI, Map)

getAttributes

public java.util.Map<java.lang.String,?> getAttributes(URI uri,
                                                       java.util.Map<?,?> options)

Description copied from interface: URIHandler

Returns a map from String attributes to their corresponding values representing information about various aspects of the URI's state. The requested attributes option can be used to specify which properties to fetch; without that option, all supported attributes will be fetched. If the URI doesn't not support any particular attribute, an entry for that attribute will not be appear in the result.

Specified by:

getAttributes in interface URIHandler

Overrides:

getAttributes in class URIHandlerImpl

Parameters:

uri - the URI to consider.

options - options to influence how the attributes are determined.

Returns:

a map from String attributes to their corresponding values representing information about various aspects of the URI's state.

setAttributes

public void setAttributes(URI uri,
                          java.util.Map<java.lang.String,?> attributes,
                          java.util.Map<?,?> options)
                   throws java.io.IOException

Description copied from interface: URIHandler

Updates the map from String attributes to their corresponding values representing information about various aspects of the URI's state. Unsupported or unchangeable attributes are ignored.

Specified by:

setAttributes in interface URIHandler

Overrides:

setAttributes in class URIHandlerImpl

Parameters:

uri - the URI to consider.

attributes - the new values for the attributes.

options - options to influence how the attributes are updated.

Throws:

java.io.IOException - if there is a problem updating the attributes.

createArchive

protected ArchiveURIHandlerImpl.Archive createArchive(URI uri,
                                                      java.util.Map<?,?> options)