public interface LSResourceResolver
LSResourceResolver
provides a way for applications to
redirect references to external resources.
Applications needing to implement custom handling for external
resources can implement this interface and register their implementation
by setting the resourceResolver
attribute of the
LSParser
.
The LSParser
will then allow the application to intercept
any external entities (including the external DTD subset and external
parameter entities) before including them.
Many DOM applications will not need to implement this interface, but it will be especially useful for applications that build XML documents from databases or other specialized input sources, or for applications that use URN's.
Note: LSResourceResolver
is based on the SAX2 [SAX] EntityResolver
interface.
See also the Document Object Model (DOM) Level 3 Load and Save Specification.
Modifier and Type | Method and Description |
---|---|
LSInput |
resolveResource(java.lang.String type,
java.lang.String namespaceURI,
java.lang.String publicId,
java.lang.String systemId,
java.lang.String baseURI)
Allow the application to resolve external resources.
|
LSInput resolveResource(java.lang.String type, java.lang.String namespaceURI, java.lang.String publicId, java.lang.String systemId, java.lang.String baseURI)
LSParser
will call this method before opening any
external resource except the top-level document entity (including the
external DTD subset, external entities referenced within the DTD, and
external entities referenced within the document element); the
application may request that the LSParser
resolve the
resource itself, that it use an alternative URI, or that it use an
entirely different input source.
LSParser
must
resolve it fully before calling this method.type
- The type of the resource being resolved. For XML [XML 1.0] resources
(i.e. entities), applications must use the value
"http://www.w3.org/TR/REC-xml"
, for XML Schema [XML Schema Part 1]
, applications must use the value
"http://www.w3.org/2001/XMLSchema"
. Other types of
resources are outside the scope of this specification and therefore
should recommend an absolute URI in order to use this method.namespaceURI
- The namespace of the resource being resolved,
i.e. the namespace of the XML Schema [XML Schema Part 1]
when resolving XML Schema resources.publicId
- The public identifier of the external entity being
referenced, or null
if no public identifier was
supplied or if the resource is not an entity.systemId
- The system identifier, a URI reference [IETF RFC 2396], of the
external resource being referenced.baseURI
- The absolute base URI of the resource being parsed, or
null
if there is no base URI.LSInput
object describing the new input
source, or null
to request that the parser open a
regular URI connection to the system identifier.Copyright ©2004 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C liability, trademark, document use and software licensing rules apply. The latest version is at http://www.w3.org/TR/DOM-Level-3-LS.