Package org.apache.uima.adapter.vinci.util

Class SaxVinciFrameBuilder

java.lang.Object

org.xml.sax.helpers.DefaultHandler

org.apache.uima.adapter.vinci.util.SaxVinciFrameBuilder

All Implemented Interfaces:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler

Direct Known Subclasses:

UimaSaxVinciFrameBuilder

public class SaxVinciFrameBuilder
extends DefaultHandler
implements ContentHandler

A SAX content handler that builds a VinciFrame corresponding to the SAX events received.

Constructor Summary

Constructors

Constructor	Description
SaxVinciFrameBuilder()

Method Summary

Modifier and Type	Method	Description
void	characters(char[] ch, int start, int length)
void	endElement(String namespaceURI, String localName, String qualifiedName)
protected String	getLeafContent(String aFrameName, Attributes aAttributes, StringBuffer aContentBuf)	Gets the content to be included in a FrameLeaf.
protected String	getName(String s1, String s2)	If the first String parameter is nonempty, return it, else return the second string parameter.
void	setParentFrame(AFrame aParentFrame)	Sets the parent frame, to which frames built by the object will be added.
void	startDocument()
void	startElement(String namespaceURI, String localName, String qualifiedName, Attributes attributes)	Called for each start tag encountered.

Methods inherited from class org.xml.sax.helpers.DefaultHandler

endDocument, endPrefixMapping, error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, startPrefixMapping, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.xml.sax.ContentHandler

endDocument, endPrefixMapping, ignorableWhitespace, processingInstruction, setDocumentLocator, skippedEntity, startPrefixMapping

Constructor Detail

SaxVinciFrameBuilder

public SaxVinciFrameBuilder()

Method Detail

setParentFrame

public void setParentFrame(AFrame aParentFrame)

Sets the parent frame, to which frames built by the object will be added. This MUST be called before parsing a document.

Parameters:

aParentFrame - the parent frame

startDocument

public void startDocument()
                   throws SAXException

Specified by:

startDocument in interface ContentHandler

Overrides:

startDocument in class DefaultHandler

Throws:

SAXException

See Also:

ContentHandler.startDocument()

startElement

public void startElement(String namespaceURI,
                         String localName,
                         String qualifiedName,
                         Attributes attributes)
                  throws SAXException

Called for each start tag encountered.

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class DefaultHandler

Parameters:

namespaceURI - Required if the namespaces property is true.

attributes - The specified or defaulted attributes.

localName - The local name (without prefix), or the empty string if Namespace processing is not being performed.

qualifiedName - The qualified name (with prefix), or the empty string if qualified names are not available.

Throws:

SAXException

characters

public void characters(char[] ch,
                       int start,
                       int length)

Specified by:

characters in interface ContentHandler

Overrides:

characters in class DefaultHandler

See Also:

ContentHandler.characters(char[],int,int)

endElement

public void endElement(String namespaceURI,
                       String localName,
                       String qualifiedName)

Specified by:

endElement in interface ContentHandler

Overrides:

endElement in class DefaultHandler

See Also:

ContentHandler.endElement(String,String,String)

getLeafContent

protected String getLeafContent(String aFrameName,
                                Attributes aAttributes,
                                StringBuffer aContentBuf)

Gets the content to be included in a FrameLeaf. This method just returns the contents of the provided StringBuffer, but subclasses can override to provide specialized content.

Parameters:

aFrameName - name of the FrameLeaf

aAttributes - attributes of FrameLeaf

aContentBuf - StringBuffer containing the character data obtained from the SAX parser

Returns:

the data to be included in the Vinci FrameLeaf

getName

protected String getName(String s1,
                         String s2)

If the first String parameter is nonempty, return it, else return the second string parameter.

Parameters:

s1 - The string to be tested.

s2 - The alternate String.

Returns:

s1 if it isn't empty, else s2.