org.apache.xalan.templates
Class AVTPartXPath

java.lang.Object
  |
  +--org.apache.xalan.templates.AVTPart
        |
        +--org.apache.xalan.templates.AVTPartXPath

public class AVTPartXPath
extends AVTPart

Simple string part of a complex AVT.

See Also:
Serialized Form
Usage:
**For internal use only**

Constructor Summary
AVTPartXPath(java.lang.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.
 java.lang.String getSimpleString()
          Get the AVT part as the original string.
 
Methods inherited from class org.apache.xalan.templates.AVTPart
setXPathSupport
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

AVTPartXPath

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

AVTPartXPath

public AVTPartXPath(java.lang.String val,
                    PrefixResolver nsNode,
                    XPathParser xpathProcessor,
                    XPathFactory factory,
                    XPathContext liaison)
             throws 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.
Throws:
TransformerException - TODO: Fix or remove this unused c'tor.
Method Detail

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.
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).
Overrides:
fixupVariables in class AVTPart

canTraverseOutsideSubtree

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

getSimpleString

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

evaluate

public void evaluate(XPathContext xctxt,
                     FastStringBuffer buf,
                     int context,
                     PrefixResolver nsNode)
              throws TransformerException
Write the value into the buffer.
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).
Throws:
TransformerException -  
Overrides:
evaluate in class AVTPart

callVisitors

public void callVisitors(XSLTVisitor visitor)
See Also:
XSLTVisitable.callVisitors(XSLTVisitor)


Copyright 2006 Apache XML Project. All Rights Reserved.