org.eclipse.higgins.idas.common
Class DereferenceAttrValuesExtension

java.lang.Object
  org.eclipse.higgins.idas.common.DereferenceAttrValuesExtension

All Implemented Interfaces:

org.eclipse.higgins.idas.api.IExtension

public class DereferenceAttrValuesExtension
extends Object
implements org.eclipse.higgins.idas.api.IExtension

Specifies a set of attribute IDs and/or attribute value types which, when encountered during certain IdAS operations will be examined for values which are pointers to other resources, and in which case, will be dereferenced.
Operations that this extension is valid for include: IAttribute.getValues(IExtension[])

Field Summary

static String

id

Constructor Summary

DereferenceAttrValuesExtension(URI[] attrIDs, URI[] types, boolean failIfUnsupported)

Method Summary

boolean	failIfUnsupported()
URI	getID()
boolean	shouldDereference(URI attrID, URI valType)

Methods inherited from class java.lang.Object

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

Field Detail

id

public static final String id

See Also:

Constant Field Values

Constructor Detail

DereferenceAttrValuesExtension

public DereferenceAttrValuesExtension(URI[] attrIDs,
                                      URI[] types,
                                      boolean failIfUnsupported)

Parameters:

attrIDs - may be null. When null, any attribute that is dereferenceable should be dereferenced. When not null, specifies only those attributes which should be dereferenced

types - may be null. When null, any value type that is dereferenceable should be dereferenced. When not null, specifies only those value types which should be dereferenced

failIfUnsupported - true if the caller wishes the operation being passed this extension to fail when it doesn't support the extension.

Method Detail

getID

public URI getID()

Specified by:

getID in interface org.eclipse.higgins.idas.api.IExtension

failIfUnsupported

public boolean failIfUnsupported()

Specified by:

failIfUnsupported in interface org.eclipse.higgins.idas.api.IExtension

shouldDereference

public boolean shouldDereference(URI attrID,
                                 URI valType)

Returns:

true if the passed attribute ID should be dereferenced.