|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object net.sf.saxon.lib.StandardEntityResolver
public class StandardEntityResolver
This class is an EntityResolver used to resolve references to common DTDs and entity files, using local copies provided with the Saxon product. It has become necessary to do this because W3C is no longer serving these files from its server. Ideally the job of caching these files would belong to the XML parser, but because many of the parsers were issued years ago, they cannot be relied on to do it.
Field Summary | |
---|---|
PrintStream |
traceDestination
|
boolean |
tracing
|
Constructor Summary | |
---|---|
StandardEntityResolver()
|
Method Summary | |
---|---|
static StandardEntityResolver |
getInstance()
|
static void |
register(String publicId,
String systemId,
String fileName)
Register a DTD or other entity to be resolved by this entity resolver |
InputSource |
resolveEntity(String publicId,
String systemId)
Allow the application to resolve external entities. |
void |
setConfiguration(Configuration config)
Set configuration details. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
public boolean tracing
public PrintStream traceDestination
Constructor Detail |
---|
public StandardEntityResolver()
Method Detail |
---|
public static StandardEntityResolver getInstance()
public static void register(String publicId, String systemId, String fileName)
publicId
- the public identifier of the DTD or entitysystemId
- the system identifier of the DTD or entityfileName
- the fileName of the Saxon local copy of the
resource, relative to the data directory in the JAR filepublic void setConfiguration(Configuration config)
config
- the Saxon configurationpublic InputSource resolveEntity(String publicId, String systemId) throws SAXException, IOException
The parser will call this method before opening any external entity except the top-level document entity. Such entities include the external DTD subset and external parameter entities referenced within the DTD (in either case, only if the parser reads external parameter entities), and external general entities referenced within the document element (if the parser reads external general entities). The application may request that the parser locate the entity itself, that it use an alternative URI, or that it use data provided by the application (as a character or byte input stream).
Application writers can use this method to redirect external system identifiers to secure and/or local URIs, to look up public identifiers in a catalogue, or to read an entity from a database or other input source (including, for example, a dialog box). Neither XML nor SAX specifies a preferred policy for using public or system IDs to resolve resources. However, SAX specifies how to interpret any InputSource returned by this method, and that if none is returned, then the system ID will be dereferenced as a URL.
If the system identifier is a URL, the SAX parser must resolve it fully before reporting it to the application.
resolveEntity
in interface EntityResolver
publicId
- The public identifier of the external entity
being referenced, or null if none was supplied.systemId
- The system identifier of the external entity
being referenced.
SAXException
- Any SAX exception, possibly
wrapping another exception.
IOException
- A Java-specific IO exception,
possibly the result of creating a new InputStream
or Reader for the InputSource.InputSource
|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |