org.xmlbeam.util.intern.duplex

Class DuplexExpression

java.lang.Object

org.xmlbeam.util.intern.duplex.DuplexExpression

public class DuplexExpression
extends Object

Author:

sven

Method Summary

Modifier and Type	Method and Description
Node	createChildWithPredicate(Node parentNode)
void	deleteAllMatchingChildren(Node parentNode)
void	dump() Dumps the tree behind the expression for debugging purpose.
Node	ensureExistence(Node contextNode) Creates nodes until selecting such a path would return something.
Element	ensureParentExistence(Node contextNode)
String	getExpressionAsStringWithoutFormatPatterns()
String	getExpressionFormatPattern()
ExpressionType	getExpressionType() Calculates the return type of the expression.
String	getVariableFormatPattern(String name)
boolean	hasExpressionFormatPattern()
boolean	isUsingVariables()
DuplexExpression	setXPathVariableResolver(XPathVariableResolver resolver)
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

setXPathVariableResolver

public DuplexExpression setXPathVariableResolver(XPathVariableResolver resolver)

Parameters:

resolver -

Returns:

this for convenience

toString

public String toString()

Overrides:

toString in class Object

isUsingVariables

public boolean isUsingVariables()

Returns:

true if expression makes use of XPath variables

getExpressionType

public ExpressionType getExpressionType()

Calculates the return type of the expression.

Returns:

ExpressionType

ensureExistence

public Node ensureExistence(Node contextNode)

Creates nodes until selecting such a path would return something.

Parameters:

contextNode -

Returns:

the node that this expression would select.

ensureParentExistence

public Element ensureParentExistence(Node contextNode)

Parameters:

contextNode -

Returns:

the parent element

deleteAllMatchingChildren

public void deleteAllMatchingChildren(Node parentNode)

Parameters:

parentNode -

createChildWithPredicate

public Node createChildWithPredicate(Node parentNode)

Parameters:

parentNode -

Returns:

fresh new node

dump

public void dump()

Dumps the tree behind the expression for debugging purpose.

getExpressionFormatPattern

public String getExpressionFormatPattern()

Returns:

String representation of expressions pattern

getExpressionAsStringWithoutFormatPatterns

public String getExpressionAsStringWithoutFormatPatterns()

Returns:

xpath compileable with regular xpath engine.

getVariableFormatPattern

public String getVariableFormatPattern(String name)

Parameters:

name -

Returns:

pattern for variable or null if no format is defined.

hasExpressionFormatPattern

public boolean hasExpressionFormatPattern()

Returns:

true if getExpressionFormat is not null.