Package org.jivesoftware.smack.xml

Interface XmlPullParser

public interface XmlPullParser

Smack's interface for XML pull parsers. The main XML parser implementations are "Xml Pull Parser 3" (XPP3) on Android and "Streaming API for XML" (StAX, JSR 173) on Java.

Differences from StAX's XMLStreamReader are:

• getName() and getAttributeName(int) return localname, there is getQName() and getAttributeQName(int) to retrieve the qualified name (QName).
• nextText() instead of XMLStreamReader.getElementText().

Differences from XPP3's XmlPullParser are:

• Methods taking an attribute, like getAttributeName(int) index return null instead of throwing an exception if no attribute with the given index exists.

Developer Information

The following table shows the mapping of Smack's XmlPullParser events to StAX and XPP3 events:

XmlPullParser event mapping

Smack's XmlPullParser.Event	StAX Event	XPP3 Event
XmlPullParser.Event.START_DOCUMENT	START_DOCUMENT (7)	START_DOCUMENT (0)
XmlPullParser.Event.END_DOCUMENT	END_DOCUMENT (8)	END_DOCUMENT (1)
XmlPullParser.Event.START_ELEMENT	START_ELEMENT (1)	START_TAG (2)
XmlPullParser.Event.END_ELEMENT	END_ELEMENT (2)	END_TAG (3)
XmlPullParser.Event.TEXT_CHARACTERS	CHARACTERS (4)	TEXT (4)
XmlPullParser.Event.PROCESSING_INSTRUCTION	PROCESSING_INSTRUCTION (3)	PROCESSING_INSTRUCTION (8)
XmlPullParser.Event.COMMENT	COMMENT (5)	COMMENT (9)
XmlPullParser.Event.IGNORABLE_WHITESPACE	SPACE (6)	IGNORABLE_WHITESPACE (7)
XmlPullParser.Event.ENTITY_REFERENCE	ENTITY_REFERENCE (9)	ENTITY_REF (6)
XmlPullParser.Event.OTHER	ENTITY_REFERENCE (9)	ENTITY_REF (6)

XmlPullParser.Event.OTHER includes in case of StAX: ATTRIBUTE (10), DTD (11), CDATA (12), NAMESPACE (13), NOTATION_DECLARATION (14) and ENTITY_DECLRATION (15), in case of XPP3: CDSECT (5), DOCDECL (10).

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	XmlPullParser.Event
static class	XmlPullParser.TagEvent

Method Summary

Modifier and Type	Method	Description
int	getAttributeCount()
java.lang.String	getAttributeName(int index)	Returns the loacalpart of the attribute's name or null in case the index does not refer to an attribute.
java.lang.String	getAttributeNamespace(int index)
java.lang.String	getAttributePrefix(int index)
javax.xml.namespace.QName	getAttributeQName(int index)
java.lang.String	getAttributeType(int index)
java.lang.String	getAttributeValue(int index)
default java.lang.String	getAttributeValue(java.lang.String name)
java.lang.String	getAttributeValue(java.lang.String namespace, java.lang.String name)
int	getColumnNumber()
int	getDepth()
XmlPullParser.Event	getEventType()
java.lang.String	getInputEncoding()
int	getLineNumber()
java.lang.String	getName()	Return the name for the current START_ELEMENT or END_ELEMENT event.
java.lang.String	getNamespace()
java.lang.String	getNamespace(java.lang.String prefix)
int	getNamespaceCount()
java.lang.String	getNamespacePrefix(int pos)
java.lang.String	getNamespaceUri(int pos)
java.lang.String	getPositionDescription()
java.lang.String	getPrefix()
java.lang.Object	getProperty(java.lang.String name)
javax.xml.namespace.QName	getQName()
java.lang.String	getText()
boolean	isWhiteSpace()
XmlPullParser.Event	next()
XmlPullParser.TagEvent	nextTag()
java.lang.String	nextText()	Reads the content of a text-only element, an exception is thrown if this is not a text-only element.
boolean	supportsRoundtrip()

Method Detail

getProperty

java.lang.Object getProperty(java.lang.String name)

getInputEncoding

java.lang.String getInputEncoding()

getNamespaceCount

int getNamespaceCount()
               throws XmlPullParserException

Throws:

XmlPullParserException

getNamespacePrefix

java.lang.String getNamespacePrefix(int pos)
                             throws XmlPullParserException

Throws:

XmlPullParserException

getNamespaceUri

java.lang.String getNamespaceUri(int pos)
                          throws XmlPullParserException

Throws:

XmlPullParserException

getNamespace

java.lang.String getNamespace(java.lang.String prefix)

getDepth

int getDepth()

getPositionDescription

java.lang.String getPositionDescription()

getLineNumber

int getLineNumber()

getColumnNumber

int getColumnNumber()

isWhiteSpace

boolean isWhiteSpace()
              throws XmlPullParserException

Throws:

XmlPullParserException

getText

java.lang.String getText()

getNamespace

java.lang.String getNamespace()

getName

java.lang.String getName()

Return the name for the current START_ELEMENT or END_ELEMENT event. This method must only be called if the current event is START_ELEMENT or END_ELEMENT.

Returns:

the name for the current START_ELEMETN or END_ELEMENT event.

getQName

javax.xml.namespace.QName getQName()

getPrefix

java.lang.String getPrefix()

getAttributeCount

int getAttributeCount()

getAttributeNamespace

java.lang.String getAttributeNamespace(int index)

getAttributeName

java.lang.String getAttributeName(int index)

Returns the loacalpart of the attribute's name or null in case the index does not refer to an attribute.

Parameters:

index - the attribute index.

Returns:

the localpart of the attribute's name or null.

getAttributeQName

javax.xml.namespace.QName getAttributeQName(int index)

getAttributePrefix

java.lang.String getAttributePrefix(int index)

getAttributeType

java.lang.String getAttributeType(int index)

getAttributeValue

java.lang.String getAttributeValue(int index)

getAttributeValue

java.lang.String getAttributeValue(java.lang.String namespace,
                                   java.lang.String name)

getAttributeValue

default java.lang.String getAttributeValue(java.lang.String name)

getEventType

XmlPullParser.Event getEventType()
                          throws XmlPullParserException

Throws:

XmlPullParserException

next

XmlPullParser.Event next()
                  throws java.io.IOException,
                         XmlPullParserException

Throws:

java.io.IOException

XmlPullParserException

nextText

java.lang.String nextText()
                   throws java.io.IOException,
                          XmlPullParserException

Reads the content of a text-only element, an exception is thrown if this is not a text-only element.

• Precondition: the current event is START_ELEMENT.
• Postcondition: the current event is the corresponding END_ELEMENT.

Returns:

the textual content of the current element.

Throws:

java.io.IOException - in case of an IO error.

XmlPullParserException - in case of an XML pull parser error.

nextTag

XmlPullParser.TagEvent nextTag()
                        throws java.io.IOException,
                               XmlPullParserException

Throws:

java.io.IOException

XmlPullParserException

supportsRoundtrip

boolean supportsRoundtrip()