javax.xml.transform
Interface ErrorListener
public interface ErrorListener
To provide customized error handling, implement this interface and
use the
setErrorListener
method to register an instance of the
implmentation with the
Transformer
. The
Transformer
then reports all errors and warnings through this
interface.
If an application does
not register its own custom
ErrorListener
, the default
ErrorListener
is used which reports all warnings and errors to
System.err
and does not throw any
Exception
s.
Applications are
strongly encouraged to register and use
ErrorListener
s that insure proper behavior for warnings and
errors.
For transformation errors, a
Transformer
must use this
interface instead of throwing an
Exception
: it is up to the
application to decide whether to throw an
Exception
for
different types of errors and warnings. Note however that the
Transformer
is not required to continue with the transformation
after a call to
fatalError(TransformerException exception)
.
Transformer
s may use this mechanism to report XML parsing
errors as well as transformation errors.
error
public abstract void error(TransformerException exception)
throws TransformerException
Receive notification of a recoverable error.
The transformer must continue to try and provide normal transformation
after invoking this method. It should still be possible for the
application to process the document through to the end if no other errors
are encountered.
exception
- The error information encapsulated in a
transformer exception.
fatalError
public abstract void fatalError(TransformerException exception)
throws TransformerException
Receive notification of a non-recoverable error.
The
Transformer
must continue to try and provide normal
transformation after invoking this method. It should still be possible for the
application to process the document through to the end if no other errors
are encountered, but there is no guarantee that the output will be
useable.
exception
- The error information encapsulated in a
TransformerException
.
warning
public abstract void warning(TransformerException exception)
throws TransformerException
Receive notification of a warning.
Transformer
can use this method to report
conditions that are not errors or fatal errors. The default behaviour
is to take no action.
After invoking this method, the Transformer must continue with
the transformation. It should still be possible for the
application to process the document through to the end.
exception
- The warning information encapsulated in a
transformer exception.