Attributes Class Reference

#include <Attributes.hpp>

Inheritance diagram for Attributes:

VecAttributesImpl List of all members.

Public Member Functions

Constructors and Destructor
 Attributes ()
virtual ~Attributes ()
The virtual attribute list interface
virtual unsigned int getLength () const =0
virtual const XMLChgetURI (const unsigned int index) const =0
virtual const XMLChgetLocalName (const unsigned int index) const =0
virtual const XMLChgetQName (const unsigned int index) const =0
virtual const XMLChgetType (const unsigned int index) const =0
virtual const XMLChgetValue (const unsigned int index) const =0
virtual int getIndex (const XMLCh *const uri, const XMLCh *const localPart) const =0
virtual int getIndex (const XMLCh *const qName) const =0
virtual const XMLChgetType (const XMLCh *const uri, const XMLCh *const localPart) const =0
virtual const XMLChgetType (const XMLCh *const qName) const =0
virtual const XMLChgetValue (const XMLCh *const uri, const XMLCh *const localPart) const =0
virtual const XMLChgetValue (const XMLCh *const qName) const =0

Private Member Functions

 Attributes (const Attributes &)
Attributesoperator= (const Attributes &)

Detailed Description

Interface for an element's attribute specifications.

The SAX2 parser implements this interface and passes an instance to the SAX2 application as the last argument of each startElement event.

The instance provided will return valid results only during the scope of the startElement invocation (to save it for future use, the application must make a copy: the AttributesImpl helper class provides a convenient constructor for doing so).

An Attributes includes only attributes that have been specified or defaulted: IMPLIED attributes will not be included.

There are two ways for the SAX application to obtain information from the Attributes. First, it can iterate through the entire list:

 public void startElement (String uri, String localpart, String qName, Attributes atts) {
   for (int i = 0; i < atts.getLength(); i++) {
     String Qname = atts.getQName(i);
		String URI   = atts.getURI(i)
		String local = atts.GetLocalName(i)
     String type  = atts.getType(i);
     String value = atts.getValue(i);
     [...]
   }
 }
 

(Note that the result of getLength() will be zero if there are no attributes.)

As an alternative, the application can request the value or type of specific attributes:

 public void startElement (String uri, String localpart, String qName, Attributes atts) {
   String identifier = atts.getValue("id");
   String label = atts.getValue("label");
   [...]
 }
 

The AttributesImpl helper class provides a convenience implementation for use by parser or application writers.

See also:
Sax2DocumentHandler::startElement

AttributesImpl::AttributesImpl

Definition at line 170 of file Attributes.hpp.


Constructor & Destructor Documentation

Attributes::Attributes (  )  [inline]

Default constructor

Definition at line 179 of file Attributes.hpp.

virtual Attributes::~Attributes (  )  [inline, virtual]

Destructor

Definition at line 184 of file Attributes.hpp.

Attributes::Attributes ( const Attributes  )  [private]


Member Function Documentation

virtual int Attributes::getIndex ( const XMLCh *const   qName  )  const [pure virtual]

Look up the index of an attribute by XML 1.0 qualified name.

Parameters:
qName The qualified (prefixed) name.
Returns:
The index of the attribute, or -1 if it does not appear in the list.

Implemented in VecAttributesImpl.

virtual int Attributes::getIndex ( const XMLCh *const   uri,
const XMLCh *const   localPart 
) const [pure virtual]

Look up the index of an attribute by Namespace name.

Parameters:
uri The Namespace URI, or the empty string if the name has no Namespace URI.
localPart The attribute's local name.
Returns:
The index of the attribute, or -1 if it does not appear in the list.

Implemented in VecAttributesImpl.

virtual unsigned int Attributes::getLength (  )  const [pure virtual]

Return the number of attributes in this list.

The SAX parser may provide attributes in any arbitrary order, regardless of the order in which they were declared or specified. The number of attributes may be zero.

Returns:
The number of attributes in the list.

Implemented in VecAttributesImpl.

Referenced by SAX2Handler::parseCameraAttributes(), SAX2Handler::parseCylinderAttributes(), SAX2Handler::parseInteractiveButtonAttributes(), SAX2Handler::parseJointAttributes(), SAX2Handler::parseMovableObjectAttributes(), SAX2Handler::parsePolyederAttributes(), SAX2Handler::parseSceneAttributes(), SAX2Handler::parseSimObjectAttributes(), SAX2Handler::parseSphereAttributes(), SAX2Handler::parseSurfaceAttributes(), SAX2Handler::parseUseAttributes(), and SAX2Handler::parseWhiskerAttributes().

virtual const XMLCh* Attributes::getLocalName ( const unsigned int  index  )  const [pure virtual]

Return the local name of an attribute in this list (by position).

The QNames must be unique: the SAX parser shall not include the same attribute twice. Attributes without values (those declared IMPLIED without a value specified in the start tag) will be omitted from the list.

Parameters:
index The index of the attribute in the list (starting at 0).
Returns:
The local name of the indexed attribute, or null if the index is out of range.
See also:
getLength

Implemented in VecAttributesImpl.

Referenced by SAX2Handler::parseCameraAttributes(), SAX2Handler::parseCylinderAttributes(), SAX2Handler::parseInteractiveButtonAttributes(), SAX2Handler::parseJointAttributes(), SAX2Handler::parseMovableObjectAttributes(), SAX2Handler::parsePolyederAttributes(), SAX2Handler::parseSceneAttributes(), SAX2Handler::parseSimObjectAttributes(), SAX2Handler::parseSphereAttributes(), SAX2Handler::parseSurfaceAttributes(), SAX2Handler::parseUseAttributes(), and SAX2Handler::parseWhiskerAttributes().

virtual const XMLCh* Attributes::getQName ( const unsigned int  index  )  const [pure virtual]

Return the qName of an attribute in this list (by position).

The QNames must be unique: the SAX parser shall not include the same attribute twice. Attributes without values (those declared IMPLIED without a value specified in the start tag) will be omitted from the list.

Parameters:
index The index of the attribute in the list (starting at 0).
Returns:
The qName of the indexed attribute, or null if the index is out of range.
See also:
getLength

Implemented in VecAttributesImpl.

virtual const XMLCh* Attributes::getType ( const XMLCh *const   qName  )  const [pure virtual]

Look up an attribute's type by XML 1.0 qualified name.

See getType for a description of the possible types.

Parameters:
qName The XML 1.0 qualified name.
Returns:
The attribute type as a string, or null if the attribute is not in the list or if qualified names are not available.

Implemented in VecAttributesImpl.

virtual const XMLCh* Attributes::getType ( const XMLCh *const   uri,
const XMLCh *const   localPart 
) const [pure virtual]

Look up an attribute's type by Namespace name.

See getType for a description of the possible types.

Parameters:
uri The Namespace URI, or the empty String if the name has no Namespace URI.
localPart The local name of the attribute.
Returns:
The attribute type as a string, or null if the attribute is not in the list or if Namespace processing is not being performed.

Implemented in VecAttributesImpl.

virtual const XMLCh* Attributes::getType ( const unsigned int  index  )  const [pure virtual]

Return the type of an attribute in the list (by position).

The attribute type is one of the strings "CDATA", "ID", "IDREF", "IDREFS", "NMTOKEN", "NMTOKENS", "ENTITY", "ENTITIES", or "NOTATION" (always in upper case).

If the parser has not read a declaration for the attribute, or if the parser does not report attribute types, then it must return the value "CDATA" as stated in the XML 1.0 Recommentation (clause 3.3.3, "Attribute-Value Normalization").

For an enumerated attribute that is not a notation, the parser will report the type as "NMTOKEN".

Parameters:
index The index of the attribute in the list (starting at 0).
Returns:
The attribute type as a string, or null if the index is out of range.
See also:
getLength

getType(String)

Implemented in VecAttributesImpl.

virtual const XMLCh* Attributes::getURI ( const unsigned int  index  )  const [pure virtual]

Return the namespace URI of an attribute in this list (by position).

The QNames must be unique: the SAX parser shall not include the same attribute twice. Attributes without values (those declared IMPLIED without a value specified in the start tag) will be omitted from the list.

Parameters:
index The index of the attribute in the list (starting at 0).
Returns:
The URI of the indexed attribute, or null if the index is out of range.
See also:
getLength

Implemented in VecAttributesImpl.

virtual const XMLCh* Attributes::getValue ( const XMLCh *const   qName  )  const [pure virtual]

Look up an attribute's value by XML 1.0 qualified name.

See getValue for a description of the possible values.

Parameters:
qName The XML 1.0 qualified name.
Returns:
The attribute value as a string, or null if the attribute is not in the list or if qualified names are not available.

Implemented in VecAttributesImpl.

virtual const XMLCh* Attributes::getValue ( const XMLCh *const   uri,
const XMLCh *const   localPart 
) const [pure virtual]

Look up an attribute's value by Namespace name.

See getValue for a description of the possible values.

Parameters:
uri The Namespace URI, or the empty String if the name has no Namespace URI.
localPart The local name of the attribute.
Returns:
The attribute value as a string, or null if the attribute is not in the list.

Implemented in VecAttributesImpl.

virtual const XMLCh* Attributes::getValue ( const unsigned int  index  )  const [pure virtual]

Return the value of an attribute in the list (by position).

If the attribute value is a list of tokens (IDREFS, ENTITIES, or NMTOKENS), the tokens will be concatenated into a single string separated by whitespace.

Parameters:
index The index of the attribute in the list (starting at 0).
Returns:
The attribute value as a string, or null if the index is out of range.
See also:
getLength

getValue(XMLCh*)

Implemented in VecAttributesImpl.

Referenced by SAX2Handler::parseCameraAttributes(), SAX2Handler::parseCylinderAttributes(), SAX2Handler::parseInteractiveButtonAttributes(), SAX2Handler::parseJointAttributes(), SAX2Handler::parseMovableObjectAttributes(), SAX2Handler::parsePolyederAttributes(), SAX2Handler::parseSceneAttributes(), SAX2Handler::parseSimObjectAttributes(), SAX2Handler::parseSphereAttributes(), SAX2Handler::parseSurfaceAttributes(), SAX2Handler::parseUseAttributes(), and SAX2Handler::parseWhiskerAttributes().

Attributes& Attributes::operator= ( const Attributes  )  [private]


The documentation for this class was generated from the following file:
Generated on Thu Dec 7 01:18:54 2006 for DT2005.panorama by  doxygen 1.4.7