org.apache.xalan.templates

Class AVTPartXPath

Implemented Interfaces:
java.io.Serializable, XSLTVisitable

public class AVTPartXPath
extends AVTPart

Simple string part of a complex AVT.
See Also:
Serialized Form

Constructor Summary

AVTPartXPath(String val, PrefixResolver nsNode, XPathParser xpathProcessor, XPathFactory factory, XPathContext liaison)
Construct a simple AVT part.
AVTPartXPath(XPath xpath)
Construct a simple AVT part.

Method Summary

void
callVisitors(XSLTVisitor visitor)
boolean
canTraverseOutsideSubtree()
Tell if this expression or it's subexpressions can traverse outside the current subtree.
void
evaluate(XPathContext xctxt, FastStringBuffer buf, int context, PrefixResolver nsNode)
Write the value into the buffer.
void
fixupVariables(java.util.Vector vars, int globalsSize)
This function is used to fixup variables from QNames to stack frame indexes at stylesheet build time.
String
getSimpleString()
Get the AVT part as the original string.

Methods inherited from class org.apache.xalan.templates.AVTPart

canTraverseOutsideSubtree, evaluate, fixupVariables, getSimpleString, setXPathSupport

Constructor Details

AVTPartXPath

public AVTPartXPath(String val,
                    PrefixResolver nsNode,
                    XPathParser xpathProcessor,
                    XPathFactory factory,
                    XPathContext liaison)
            throws javax.xml.transform.TransformerException
Construct a simple AVT part.
Parameters:
val - A pure string section of an AVT.
nsNode - An object which can be used to determine the Namespace Name (URI) for any Namespace prefix used in the XPath. Usually this is based on the context where the XPath was specified, such as a node within a Stylesheet.
xpathProcessor - XPath parser
factory - XPath factory
liaison - An XPathContext object, providing infomation specific to this invocation and this thread. Maintains SAX output state, variables, error handler and so on, so the transformation/XPath object itself can be simultaneously invoked from multiple threads.

AVTPartXPath

public AVTPartXPath(XPath xpath)
Construct a simple AVT part.
Parameters:
xpath - Xpath section of AVT

Method Details

callVisitors

public void callVisitors(XSLTVisitor visitor)
Specified by:
callVisitors in interface XSLTVisitable

canTraverseOutsideSubtree

public boolean canTraverseOutsideSubtree()
Tell if this expression or it's subexpressions can traverse outside the current subtree.
Overrides:
canTraverseOutsideSubtree in interface AVTPart
Returns:
true if traversal outside the context node's subtree can occur.

evaluate

public void evaluate(XPathContext xctxt,
                     FastStringBuffer buf,
                     int context,
                     PrefixResolver nsNode)
            throws javax.xml.transform.TransformerException
Write the value into the buffer.
Overrides:
evaluate in interface AVTPart
Parameters:
xctxt - An XPathContext object, providing infomation specific to this invocation and this thread. Maintains SAX state, variables, error handler and so on, so the transformation/XPath object itself can be simultaneously invoked from multiple threads.
buf - Buffer to write into.
context - The current source tree context.
nsNode - The current namespace context (stylesheet tree context).

fixupVariables

public void fixupVariables(java.util.Vector vars,
                           int globalsSize)
This function is used to fixup variables from QNames to stack frame indexes at stylesheet build time.
Overrides:
fixupVariables in interface AVTPart
Parameters:
vars - List of QNames that correspond to variables. This list should be searched backwards for the first qualified name that corresponds to the variable reference qname. The position of the QName in the vector from the start of the vector will be its position in the stack frame (but variables above the globalsTop value will need to be offset to the current stack frame).

getSimpleString

public String getSimpleString()
Get the AVT part as the original string.
Overrides:
getSimpleString in interface AVTPart
Returns:
the AVT part as the original string.

Copyright B) 2006 Apache XML Project. All Rights Reserved.