gnu.xml.aelfred2
Class XmlReader
java.lang.Object
|
+--gnu.xml.aelfred2.XmlReader
All Implemented Interfaces:
XMLReader
This SAX2 parser optionally layers a validator over the Ælfred2
SAX2 parser. While this will not evaluate every XML validity constraint,
it does support all the validity constraints that are of any real utility
outside the strict SGML-compatible world. See the documentation for the
SAXDriver class for information about the SAX2 features and properties
that are supported, and documentation for the ValidationConsumer for
information about what validity constraints may not be supported.
(Ælfred2 tests some of those, even in non-validating mode, to
achieve better conformance.)
Note that due to its internal construction, you can't change most
handlers until parse() returns. This diverges slightly from SAX, which
expects later binding to be supported. Early binding involves less
runtime overhead, which is an issue for event pipelines as used inside
this parser. Rather than relying on the parser to handle late binding
to your own handlers, do it yourself.
Author:See Also:
XmlReader
public XmlReader()
Constructs a SAX Parser.
XmlReader
public XmlReader(boolean invalidIsFatal)
Constructs a SAX Parser, optionally treating validity errors
as if they were fatal errors.
Parameters:
getContentHandler
public ContentHandler getContentHandler()
SAX2: Returns the object used to report the logical
content of an XML document.
getDTDHandler
public DTDHandler getDTDHandler()
SAX2: Returns the object used to process declarations related
to notations and unparsed entities.
getEntityResolver
public EntityResolver getEntityResolver()
SAX2: Returns the object used when resolving external
entities during parsing (both general and parameter entities).
getErrorHandler
public ErrorHandler getErrorHandler()
SAX2: Returns the object used to receive callbacks for XML
errors of all levels (fatal, nonfatal, warning); this is never null;
getFeature
public boolean getFeature(java.lang.String featureId)
SAX2: Tells whether this parser supports the specified feature.
At this time, this directly parallels the underlying SAXDriver,
except that validation is optionally supported.
Parameters:
See Also:
getProperty
public Object getProperty(java.lang.String propertyId)
SAX2: Returns the specified property.
Parameters:
parse
public void parse(java.lang.String systemId)
SAX1: Preferred API to parse an XML document, using a
system identifier (URI).
Parameters:
parse
public void parse(org.xml.sax.InputSource source)
SAX1: Underlying API to parse an XML document, used
directly when no URI is available. When this is invoked,
and the parser is set to validate, some features will be
automatically reset to appropriate values: for reporting
namespace prefixes, and incorporating external entities.
Parameters:
Throws:
IllegalStateException
- if called mid-parseSAXException
- The handlers may throw any SAXException,
and the parser normally throws SAXParseException objects.IOException
- IOExceptions are normally through through
the parser if there are problems reading the source document.
setContentHandler
public void setContentHandler(org.xml.sax.ContentHandler handler)
SAX2: Assigns the object used to report the logical
content of an XML document.
Parameters:
Throws:
setDTDHandler
public void setDTDHandler(org.xml.sax.DTDHandler handler)
SAX1 Assigns DTD handler
Parameters:
Throws:
setEntityResolver
public void setEntityResolver(org.xml.sax.EntityResolver handler)
SAX1 Assigns parser's entity resolver
Parameters:
setErrorHandler
public void setErrorHandler(org.xml.sax.ErrorHandler handler)
SAX1 Assigns error handler
Parameters:
Throws:
setFeature
public void setFeature(java.lang.String featureId, boolean state)
SAX2: Sets the state of features supported in this parser.
Note that this parser requires reporting of namespace prefixes when
validating.
Parameters:
setLocale
public void setLocale(java.util.Locale locale)
SAX1: Sets the locale used for diagnostics; currently,
only locales using the English language are supported.
Parameters:
setProperty
public void setProperty(java.lang.String propertyId, java.lang.Object value)
SAX2: Assigns the specified property.
Parameters:
Throws:
Note that due to its internal construction, you can't change most handlers until parse() returns. This diverges slightly from SAX, which expects later binding to be supported. Early binding involves less runtime overhead, which is an issue for event pipelines as used inside this parser. Rather than relying on the parser to handle late binding to your own handlers, do it yourself.