org.apache.xerces.xni

Interface XMLDTDContentModelHandler

All Known Subinterfaces:

XMLDTDContentModelFilter

All Known Implementing Classes:

AbstractDOMParser, AbstractSAXParser, AbstractXMLDocumentParser, DefaultXMLDocumentHandler, DOMASBuilderImpl, DOMParser, DOMParserImpl, DTDGrammar, DTDParser, SAXParser, SAXParserImpl.JAXPSAXParser, SchemaDOMParser, XML11DTDProcessor, XMLDocumentParser, XMLDTDLoader, XMLDTDProcessor

public interface XMLDTDContentModelHandler

The DTD content model handler interface defines callback methods to report information items in DTD content models of an element declaration. Parser components interested in DTD content model information implement this interface and are registered as the DTD content model handler on the DTD content model source.

Version:

$Id$

Author:

Andy Clark, IBM

See Also:

XMLDTDHandler

Field Summary

Fields

Modifier and Type	Field and Description
static short	OCCURS_ONE_OR_MORE This occurrence count limits the element, choice, or sequence in a children content model to one or more.
static short	OCCURS_ZERO_OR_MORE This occurrence count limits the element, choice, or sequence in a children content model to zero or more.
static short	OCCURS_ZERO_OR_ONE This occurrence count limits the element, choice, or sequence in a children content model to zero or one.
static short	SEPARATOR_CHOICE A choice separator for children and mixed content models.
static short	SEPARATOR_SEQUENCE A sequence separator for children content models.

Method Summary

Methods

Modifier and Type	Method and Description
void	any(Augmentations augmentations) A content model of ANY.
void	element(String elementName, Augmentations augmentations) A referenced element in a mixed or children content model.
void	empty(Augmentations augmentations) A content model of EMPTY.
void	endContentModel(Augmentations augmentations) The end of a content model.
void	endGroup(Augmentations augmentations) The end of a group for mixed or children content models.
XMLDTDContentModelSource	getDTDContentModelSource()
void	occurrence(short occurrence, Augmentations augmentations) The occurrence count for a child in a children content model or for the mixed content model group.
void	pcdata(Augmentations augmentations) The appearance of "#PCDATA" within a group signifying a mixed content model.
void	separator(short separator, Augmentations augmentations) The separator between choices or sequences of a mixed or children content model.
void	setDTDContentModelSource(XMLDTDContentModelSource source)
void	startContentModel(String elementName, Augmentations augmentations) The start of a content model.
void	startGroup(Augmentations augmentations) A start of either a mixed or children content model.

Field Detail

SEPARATOR_CHOICE

static final short SEPARATOR_CHOICE

A choice separator for children and mixed content models. This separator is used to specify that the allowed child is one of a collection.

For example:

 <!ELEMENT elem (foo|bar)>
 <!ELEMENT elem (foo|bar+)>
 <!ELEMENT elem (foo|bar|baz)>
 <!ELEMENT elem (#PCDATA|foo|bar)*>
 

See Also:

SEPARATOR_SEQUENCE, Constant Field Values

SEPARATOR_SEQUENCE

static final short SEPARATOR_SEQUENCE

A sequence separator for children content models. This separator is used to specify that the allowed children must follow in the specified sequence.

 <!ELEMENT elem (foo,bar)>
 <!ELEMENT elem (foo,bar*)>
 <!ELEMENT elem (foo,bar,baz)>
 

See Also:

SEPARATOR_CHOICE, Constant Field Values

OCCURS_ZERO_OR_ONE

static final short OCCURS_ZERO_OR_ONE

This occurrence count limits the element, choice, or sequence in a children content model to zero or one. In other words, the child is optional.

For example:

 <!ELEMENT elem (foo?)>
 

See Also:

OCCURS_ZERO_OR_MORE, OCCURS_ONE_OR_MORE, Constant Field Values

OCCURS_ZERO_OR_MORE

static final short OCCURS_ZERO_OR_MORE

This occurrence count limits the element, choice, or sequence in a children content model to zero or more. In other words, the child may appear an arbitrary number of times, or not at all. This occurrence count is also used for mixed content models.

For example:

 <!ELEMENT elem (foo*)>
 <!ELEMENT elem (#PCDATA|foo|bar)*>
 

See Also:

OCCURS_ZERO_OR_ONE, OCCURS_ONE_OR_MORE, Constant Field Values

OCCURS_ONE_OR_MORE

static final short OCCURS_ONE_OR_MORE

This occurrence count limits the element, choice, or sequence in a children content model to one or more. In other words, the child may appear an arbitrary number of times, but must appear at least once.

For example:

 <!ELEMENT elem (foo+)>
 

See Also:

OCCURS_ZERO_OR_ONE, OCCURS_ZERO_OR_MORE, Constant Field Values

Method Detail

startContentModel

void startContentModel(String elementName,
                     Augmentations augmentations)
                       throws XNIException

The start of a content model. Depending on the type of the content model, specific methods may be called between the call to the startContentModel method and the call to the endContentModel method.

Parameters:

elementName - The name of the element.

augmentations - Additional information that may include infoset augmentations.

Throws:

XNIException - Thrown by handler to signal an error.

any

void any(Augmentations augmentations)
         throws XNIException

A content model of ANY.

Parameters:

augmentations - Additional information that may include infoset augmentations.

Throws:

XNIException - Thrown by handler to signal an error.

See Also:

empty(org.apache.xerces.xni.Augmentations), startGroup(org.apache.xerces.xni.Augmentations)

empty

void empty(Augmentations augmentations)
           throws XNIException

A content model of EMPTY.

Parameters:

augmentations - Additional information that may include infoset augmentations.

Throws:

XNIException - Thrown by handler to signal an error.

See Also:

any(org.apache.xerces.xni.Augmentations), startGroup(org.apache.xerces.xni.Augmentations)

startGroup

void startGroup(Augmentations augmentations)
                throws XNIException

A start of either a mixed or children content model. A mixed content model will immediately be followed by a call to the pcdata() method. A children content model will contain additional groups and/or elements.

Parameters:

augmentations - Additional information that may include infoset augmentations.

Throws:

XNIException - Thrown by handler to signal an error.

See Also:

any(org.apache.xerces.xni.Augmentations), empty(org.apache.xerces.xni.Augmentations)

pcdata

void pcdata(Augmentations augmentations)
            throws XNIException

The appearance of "#PCDATA" within a group signifying a mixed content model. This method will be the first called following the content model's startGroup().

Parameters:

augmentations - Additional information that may include infoset augmentations.

Throws:

XNIException - Thrown by handler to signal an error.

See Also:

startGroup(org.apache.xerces.xni.Augmentations)

element

void element(String elementName,
           Augmentations augmentations)
             throws XNIException

A referenced element in a mixed or children content model.

Parameters:

elementName - The name of the referenced element.

augmentations - Additional information that may include infoset augmentations.

Throws:

XNIException - Thrown by handler to signal an error.

separator

void separator(short separator,
             Augmentations augmentations)
               throws XNIException

The separator between choices or sequences of a mixed or children content model.

Parameters:

separator - The type of children separator.

augmentations - Additional information that may include infoset augmentations.

Throws:

XNIException - Thrown by handler to signal an error.

See Also:

SEPARATOR_CHOICE, SEPARATOR_SEQUENCE

occurrence

void occurrence(short occurrence,
              Augmentations augmentations)
                throws XNIException

The occurrence count for a child in a children content model or for the mixed content model group.

Parameters:

occurrence - The occurrence count for the last element or group.

augmentations - Additional information that may include infoset augmentations.

Throws:

XNIException - Thrown by handler to signal an error.

See Also:

OCCURS_ZERO_OR_ONE, OCCURS_ZERO_OR_MORE, OCCURS_ONE_OR_MORE

endGroup

void endGroup(Augmentations augmentations)
              throws XNIException

The end of a group for mixed or children content models.

Parameters:

augmentations - Additional information that may include infoset augmentations.

Throws:

XNIException - Thrown by handler to signal an error.

endContentModel

void endContentModel(Augmentations augmentations)
                     throws XNIException

The end of a content model.

Parameters:

augmentations - Additional information that may include infoset augmentations.

Throws:

XNIException - Thrown by handler to signal an error.

setDTDContentModelSource

void setDTDContentModelSource(XMLDTDContentModelSource source)

getDTDContentModelSource

XMLDTDContentModelSource getDTDContentModelSource()