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Java Source Code / Java Documentation » EJB Server resin 3.1.5 » resin » com.caucho.xpath

Source Cross Reference

Class Diagram

Java Document (Java Doc)

java.lang .Object

com.caucho.xpath .Env

Env

public class Env implements ExprEnvironment(Code)

Global and local variable environment. The April XSLT draft introduces global and local variables. The Env class contains those bindings.

Because this class exists only to support XSL, it makes a number of assumptions that would be invalid for a typical API. Specifically, the variable names must be interned strings, i.e. variable matching uses '==', not equals.

Local variables are handled like a stack. They are pushed and popped as necessary. The top variables shadow bottom variables.

In other words, although the API somewhat resembles a HashMap, it can't be used as a generic hash map.

Field Summary
HashMap	_cache
static FreeList<Env>	_freeList
HashMap	_functions
HashMap<String, Var>	_globals
HashMap	_idCache
HashMap	_ids
Element	_lastElement
String[]	_varKeys
int	_varSize
Var[]	_varValues

Method Summary
public void	addFunction(String name, Object fun)
public int	addVar(String name, Object value) Adds the value associated with name.
public int	addVar(String name, Var value) Adds the value associated with name.
public void	clear() Clears all values in the local environment.
static Env	create()
public void	free()
public Object	getCache(Object key)
public Node	getContextNode() Gets the context node.
public int	getContextPosition() Returns the position of the context node.
public int	getContextSize() Returns the number of nodes in the context list.
public Node	getCurrentNode() Gets the current node.
public ExprEnvironment	getExprEnv()
public XPathFun	getFunction(String name) Returns the named function.
public Document	getOwnerDocument() Returns a document for creating nodes.
Env	getParent() Returns the parent envivonment.
public int	getPositionIndex()
public AbstractPattern	getSelect()
public StylesheetEnv	getStylesheetEnv()
public int	getTop() Returns the top of the stack.
public int	getUseCount()
public Var	getVar(String name) Returns the value associated with name.
public VarEnv	getVarEnv() Returns the variable environment.
public int	getVarSize() Returns the current number of local variables.
public boolean	hasMorePositions() Returns true if there are more positions() needed to iterate through.
void	init(Env parent) Initialize the XPath environment with values from the parent.
void	init(Env parent, AbstractPattern select, Node currentNode) Initialize the XPath environment with a context and a select node.
void	initMacro(Env parent) Initialize the XPath environment with values from the parent.
public void	popToTop(int top) Pops the last count vars from the local stack.
public void	popVars(int count) Pops the last count vars from the local stack.
public void	setCache(Object key, Object value)
public Node	setContextNode(Node contextNode) Sets the context node.
public int	setContextPosition(int position)
public int	setContextSize(int size) Sets the context size to a know value.
public void	setCurrentNode(Node node) Sets the current node.
public ExprEnvironment	setExprEnv(ExprEnvironment exprEnv)
public HashMap	setFunctions(HashMap functions)
public void	setGlobal(String name, Object value) Sets a global variable.
public boolean	setMorePositions(boolean more) Set true if there are more positions() needed to iterate through. Parameters: more - if true, there are more positions to iterate through.
public void	setPosition(int position)
public int	setPositionIndex(int index)
public AbstractPattern	setSelect(Node node, AbstractPattern select)
public void	setStylesheetEnv(StylesheetEnv stylesheetEnv)
public void	setVar(String name, Object value) Sets the value associated with name.
public void	setVarEnv(VarEnv varEnv) Sets the variable environment.
public void	setVarSize(int size) Sets the current number of local variables (popping, them).
public String	stringValue(Node node) Returns the string-value of the node.
public Object	systemProperty(String namespaceURI, String localName) Returns the given system property.

Field Detail

_cache
HashMap _cache(Code)

_freeList
static FreeList<Env> _freeList(Code)

_functions
HashMap _functions(Code)

_globals
HashMap<String, Var> _globals(Code)

_idCache
HashMap _idCache(Code)

_ids
HashMap _ids(Code)

_lastElement
Element _lastElement(Code)

_varKeys
String[] _varKeys(Code)

_varSize
int _varSize(Code)

_varValues
Var[] _varValues(Code)

Method Detail

addFunction
public void addFunction(String name, Object fun)(Code)
	Adds and extension function Parameters: function - new function library old function library

addVar
public int addVar(String name, Object value)(Code)
	Adds the value associated with name. name must be interned

addVar
public int addVar(String name, Var value)(Code)
	Adds the value associated with name. name must be interned

clear
public void clear()(Code)
	Clears all values in the local environment.

create
static Env create()(Code)

free
public void free()(Code)

getCache
public Object getCache(Object key)(Code)

getContextNode
public Node getContextNode()(Code)
	Gets the context node.

getContextPosition
public int getContextPosition()(Code)
	Returns the position of the context node.

getContextSize
public int getContextSize()(Code)
	Returns the number of nodes in the context list.

getCurrentNode
public Node getCurrentNode()(Code)
	Gets the current node.

getExprEnv
public ExprEnvironment getExprEnv()(Code)

getFunction
public XPathFun getFunction(String name)(Code)
	Returns the named function.

getOwnerDocument
public Document getOwnerDocument()(Code)
	Returns a document for creating nodes.

getParent
Env getParent()(Code)
	Returns the parent envivonment.

getPositionIndex
public int getPositionIndex()(Code)

getSelect
public AbstractPattern getSelect()(Code)

getStylesheetEnv
public StylesheetEnv getStylesheetEnv()(Code)

getTop
public int getTop()(Code)
	Returns the top of the stack.

getUseCount
public int getUseCount()(Code)

getVar
public Var getVar(String name)(Code)
	Returns the value associated with name. name must be interned

getVarEnv
public VarEnv getVarEnv()(Code)
	Returns the variable environment.

getVarSize
public int getVarSize()(Code)
	Returns the current number of local variables.

hasMorePositions
public boolean hasMorePositions()(Code)
	Returns true if there are more positions() needed to iterate through.

init
void init(Env parent)(Code)
	Initialize the XPath environment with values from the parent.

init
void init(Env parent, AbstractPattern select, Node currentNode)(Code)
	Initialize the XPath environment with a context and a select node.

initMacro
void initMacro(Env parent)(Code)
	Initialize the XPath environment with values from the parent.

popToTop
public void popToTop(int top)(Code)
	Pops the last count vars from the local stack.

popVars
public void popVars(int count)(Code)
	Pops the last count vars from the local stack.

setCache
public void setCache(Object key, Object value)(Code)

setContextNode
public Node setContextNode(Node contextNode)(Code)
	Sets the context node.

setContextPosition
public int setContextPosition(int position)(Code)

setContextSize
public int setContextSize(int size)(Code)
	Sets the context size to a know value.

setCurrentNode
public void setCurrentNode(Node node)(Code)
	Sets the current node.

setExprEnv
public ExprEnvironment setExprEnv(ExprEnvironment exprEnv)(Code)
	Sets the selection context

setFunctions
public HashMap setFunctions(HashMap functions)(Code)
	Sets the extension function library Parameters: function - new function library old function library

setGlobal
public void setGlobal(String name, Object value)(Code)
	Sets a global variable.

setMorePositions
public boolean setMorePositions(boolean more)(Code)
	Set true if there are more positions() needed to iterate through. Parameters: more - if true, there are more positions to iterate through. the old more-position value.

setPosition
public void setPosition(int position)(Code)

setPositionIndex
public int setPositionIndex(int index)(Code)

setSelect
public AbstractPattern setSelect(Node node, AbstractPattern select)(Code)
	Sets the selection context

setStylesheetEnv
public void setStylesheetEnv(StylesheetEnv stylesheetEnv)(Code)

setVar
public void setVar(String name, Object value)(Code)
	Sets the value associated with name. name must be interned

setVarEnv
public void setVarEnv(VarEnv varEnv)(Code)
	Sets the variable environment.

setVarSize
public void setVarSize(int size)(Code)
	Sets the current number of local variables (popping, them).

stringValue
public String stringValue(Node node)(Code)
	Returns the string-value of the node.

systemProperty
public Object systemProperty(String namespaceURI, String localName)(Code)
	Returns the given system property.

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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