org.apache.xerces.impl.xs.identity
Class XPathMatcher

java.lang.Object
  |
  +--org.apache.xerces.impl.xs.identity.XPathMatcher
Direct Known Subclasses:
Field.Matcher, Selector.Matcher

public class XPathMatcher
extends java.lang.Object

XPath matcher.

Version:
$Id: XPathMatcher.java,v 1.3 2002/01/29 01:15:15 lehors Exp $
Author:
Andy Clark, IBM

Field Summary
protected static boolean DEBUG_ALL
          Compile to true to debug everything.
protected static boolean DEBUG_ANY
          Don't touch this value unless you add more debug constants.
protected static boolean DEBUG_MATCH
          Compile to true to debug match.
protected static boolean DEBUG_METHODS
          Compile to true to debug method callbacks.
protected static boolean DEBUG_METHODS2
          Compile to true to debug important method callbacks.
protected static boolean DEBUG_METHODS3
          Compile to true to debug the really important methods.
protected static boolean DEBUG_STACK
          Compile to true to debug step index stack.
protected  IdentityConstraint fIDConstraint
          REVISIT: do we need this? -NG protected NamespaceContext fNamespacesScope;
protected  SymbolTable fSymbolTable
          Symbol table.
 
Constructor Summary
XPathMatcher(XPath xpath)
          Constructs an XPath matcher that implements a document fragment handler.
XPathMatcher(XPath xpath, boolean shouldBufferContent, IdentityConstraint idConstraint)
          Constructs an XPath matcher that implements a document fragment handler.
 
Method Summary
 void characters(org.apache.xerces.xni.XMLString text)
          Character content.
 void endDocumentFragment()
          The end of the document fragment.
 void endElement(org.apache.xerces.xni.QName element, XSElementDecl eDecl)
          The end of an element.
 IdentityConstraint getIDConstraint()
           
 boolean getIsSelector()
           
 java.lang.String getMatchedString()
          Returns the matched string.
 boolean isMatched()
          Returns true if XPath has been matched.
protected  void matched(java.lang.String content, XSSimpleType val, boolean isNil)
          This method is called when the XPath handler matches the XPath expression.
 void startDocumentFragment(SymbolTable symbolTable)
          The start of the document fragment.
 void startElement(org.apache.xerces.xni.QName element, org.apache.xerces.xni.XMLAttributes attributes, XSElementDecl elementDecl)
          The start of an element.
 java.lang.String toString()
          Returns a string representation of this object.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

DEBUG_ALL

protected static final boolean DEBUG_ALL
Compile to true to debug everything.

DEBUG_METHODS

protected static final boolean DEBUG_METHODS
Compile to true to debug method callbacks.

DEBUG_METHODS2

protected static final boolean DEBUG_METHODS2
Compile to true to debug important method callbacks.

DEBUG_METHODS3

protected static final boolean DEBUG_METHODS3
Compile to true to debug the really important methods.

DEBUG_MATCH

protected static final boolean DEBUG_MATCH
Compile to true to debug match.

DEBUG_STACK

protected static final boolean DEBUG_STACK
Compile to true to debug step index stack.

DEBUG_ANY

protected static final boolean DEBUG_ANY
Don't touch this value unless you add more debug constants.

fSymbolTable

protected SymbolTable fSymbolTable
Symbol table.

fIDConstraint

protected IdentityConstraint fIDConstraint
REVISIT: do we need this? -NG protected NamespaceContext fNamespacesScope;
Constructor Detail

XPathMatcher

public XPathMatcher(XPath xpath)
Constructs an XPath matcher that implements a document fragment handler.
Parameters:
xpath - The xpath.

XPathMatcher

public XPathMatcher(XPath xpath,
                    boolean shouldBufferContent,
                    IdentityConstraint idConstraint)
Constructs an XPath matcher that implements a document fragment handler.
Parameters:
xpath - The xpath.
shouldBufferContent - True if the matcher should buffer the matched content.
idConstraint: - the identity constraint we're matching for; null unless it's a Selector.
Method Detail

isMatched

public boolean isMatched()
Returns true if XPath has been matched.

getIsSelector

public boolean getIsSelector()

getIDConstraint

public IdentityConstraint getIDConstraint()

getMatchedString

public java.lang.String getMatchedString()
Returns the matched string.

matched

protected void matched(java.lang.String content,
                       XSSimpleType val,
                       boolean isNil)
                throws org.apache.xerces.xni.XNIException
This method is called when the XPath handler matches the XPath expression. Subclasses can override this method to provide default handling upon a match.

startDocumentFragment

public void startDocumentFragment(SymbolTable symbolTable)
                           throws org.apache.xerces.xni.XNIException
The start of the document fragment.
Parameters:
context - The namespace scope in effect at the start of this document fragment.
Throws:
org.apache.xerces.xni.XNIException - Thrown by handler to signal an error.

startElement

public void startElement(org.apache.xerces.xni.QName element,
                         org.apache.xerces.xni.XMLAttributes attributes,
                         XSElementDecl elementDecl)
                  throws org.apache.xerces.xni.XNIException
The start of an element. If the document specifies the start element by using an empty tag, then the startElement method will immediately be followed by the endElement method, with no intervening methods.
Parameters:
element - The name of the element.
attributes - The element attributes.
elementDecl: - The element declaration for the element
Throws:
SAXException - Thrown by handler to signal an error.

characters

public void characters(org.apache.xerces.xni.XMLString text)
                throws org.apache.xerces.xni.XNIException
Character content.

endElement

public void endElement(org.apache.xerces.xni.QName element,
                       XSElementDecl eDecl)
The end of an element.
Parameters:
element - The name of the element.
eDecl: - the element declaration
Throws:
SAXException - Thrown by handler to signal an error.

endDocumentFragment

public void endDocumentFragment()
                         throws org.apache.xerces.xni.XNIException
The end of the document fragment.
Throws:
SAXException - Thrown by handler to signal an error.

toString

public java.lang.String toString()
Returns a string representation of this object.
Overrides:
toString in class java.lang.Object


Copyright © 1999-2001 Apache XML Project. All Rights Reserved.