com.icl.saxon.style
Class ExpressionContext

java.lang.Object
  |
  +--com.icl.saxon.style.ExpressionContext

All Implemented Interfaces:

StaticContext

public class ExpressionContext

extends java.lang.Object

implements StaticContext

An ExpressionContext represents the context for an XPath expression written in the stylesheet.

Constructor Summary

ExpressionContext(StyleElement styleElement)

Method Summary

boolean	allowsKeyFunction() Determine whether the key() function is permmitted in this context
Binding	bindVariable(int fingerprint) Bind a variable to an object that can be used to refer to it
boolean	forwardsCompatibleModeIsEnabled() Determine whether forwards-compatible mode is enabled
int	getFingerprint(java.lang.String qname, boolean useDefault) Get a fingerprint for a name, using this as the context for namespace resolution
int	getLineNumber() Get the line number of the expression within its containing entity Returns -1 if no line number is available
Function	getStyleSheetFunction(int fingerprint)
java.lang.String	getSystemId() Get the Base URI of the container of the expression
java.lang.String	getURIForPrefix(java.lang.String prefix) Get the URI for a prefix, using this Element as the context for namespace resolution
boolean	isElementAvailable(java.lang.String qname) Determine if an extension element is available
boolean	isExtensionNamespace(short uriCode) Determine whether a given URI code identifies an extension element namespace
boolean	isFunctionAvailable(java.lang.String qname) Determine if a function is available
int	makeNameCode(java.lang.String qname, boolean useDefault) Make a NameCode, using this Element as the context for namespace resolution
NamespaceTest	makeNamespaceTest(short nodeType, java.lang.String prefix) Make a NamespaceTest, using this element as the context for namespace resolution
NameTest	makeNameTest(short nodeType, java.lang.String qname, boolean useDefault) Make a NameTest, using this element as the context for namespace resolution
StaticContext	makeRuntimeContext(NamePool pool) Create a context for parsing XPath expressions at runtime, using this styelsheet element for namespace declarations, variables, etc, but using the runtime NamePool

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionContext

public ExpressionContext(StyleElement styleElement)

Method Detail

makeRuntimeContext

public StaticContext makeRuntimeContext(NamePool pool)

Create a context for parsing XPath expressions at runtime, using this styelsheet element for namespace declarations, variables, etc, but using the runtime NamePool

Specified by:

makeRuntimeContext in interface StaticContext

getSystemId

public java.lang.String getSystemId()

Get the Base URI of the container of the expression

Specified by:

getSystemId in interface StaticContext

getLineNumber

public int getLineNumber()

Get the line number of the expression within its containing entity Returns -1 if no line number is available

Specified by:

getLineNumber in interface StaticContext

getURIForPrefix

public java.lang.String getURIForPrefix(java.lang.String prefix)
                                 throws org.xml.sax.SAXException

Get the URI for a prefix, using this Element as the context for namespace resolution

Specified by:

getURIForPrefix in interface StaticContext

Parameters:

prefix - The prefix

makeNameCode

public final int makeNameCode(java.lang.String qname,
                              boolean useDefault)
                       throws org.xml.sax.SAXException

Make a NameCode, using this Element as the context for namespace resolution

Specified by:

makeNameCode in interface StaticContext

Parameters:

qname - The name as written, in the form "[prefix:]localname"

getFingerprint

public int getFingerprint(java.lang.String qname,
                          boolean useDefault)
                   throws org.xml.sax.SAXException

Get a fingerprint for a name, using this as the context for namespace resolution

Specified by:

getFingerprint in interface StaticContext

Parameters:

qname - The name as written, in the form "[prefix:]localname"

Returns:

-1 if the name is not already present in the name pool

makeNameTest

public NameTest makeNameTest(short nodeType,
                             java.lang.String qname,
                             boolean useDefault)
                      throws org.xml.sax.SAXException

Make a NameTest, using this element as the context for namespace resolution

Specified by:

makeNameTest in interface StaticContext

makeNamespaceTest

public NamespaceTest makeNamespaceTest(short nodeType,
                                       java.lang.String prefix)
                                throws org.xml.sax.SAXException

Make a NamespaceTest, using this element as the context for namespace resolution

Specified by:

makeNamespaceTest in interface StaticContext

bindVariable

public Binding bindVariable(int fingerprint)
                     throws org.xml.sax.SAXException

Bind a variable to an object that can be used to refer to it

Specified by:

bindVariable in interface StaticContext

Parameters:

fingerprint - The fingerprint of the variable name

Returns:

a Binding object that can be used to identify it in the Bindery

Throws:

org.xml.sax.SAXException - if the variable has not been declared, or if the context does not allow the use of variables

isExtensionNamespace

public boolean isExtensionNamespace(short uriCode)
                             throws org.xml.sax.SAXException

Determine whether a given URI code identifies an extension element namespace

Specified by:

isExtensionNamespace in interface StaticContext

forwardsCompatibleModeIsEnabled

public boolean forwardsCompatibleModeIsEnabled()
                                        throws org.xml.sax.SAXException

Determine whether forwards-compatible mode is enabled

Specified by:

forwardsCompatibleModeIsEnabled in interface StaticContext

getStyleSheetFunction

public Function getStyleSheetFunction(int fingerprint)
                               throws org.xml.sax.SAXException

Specified by:

getStyleSheetFunction in interface StaticContext

isElementAvailable

public boolean isElementAvailable(java.lang.String qname)
                           throws org.xml.sax.SAXException

Determine if an extension element is available

Specified by:

isElementAvailable in interface StaticContext

isFunctionAvailable

public boolean isFunctionAvailable(java.lang.String qname)
                            throws org.xml.sax.SAXException

Determine if a function is available

Specified by:

isFunctionAvailable in interface StaticContext

allowsKeyFunction

public boolean allowsKeyFunction()

Determine whether the key() function is permmitted in this context

Specified by:

allowsKeyFunction in interface StaticContext