org.jaxen.expr
Class DefaultPathExpr

java.lang.Object
  org.jaxen.expr.DefaultExpr
      org.jaxen.expr.DefaultPathExpr

All Implemented Interfaces:

java.io.Serializable, Expr, PathExpr

 class DefaultPathExpr
extends DefaultExpr
implements PathExpr

Field Summary

private Expr	filterExpr
private LocationPath	locationPath
private static long	serialVersionUID

Constructor Summary

DefaultPathExpr(Expr filterExpr, LocationPath locationPath)

Method Summary

java.lang.Object	evaluate(Context context) Evaluate the expression in the given context, and return the result.
Expr	getFilterExpr() Returns the filter expression that starts the path expression.
LocationPath	getLocationPath() Returns the location path part of this path expression.
java.lang.String	getText() Returns a String containing the XPath expression.
void	setFilterExpr(Expr filterExpr) Changes the expression's filter expression.
Expr	simplify() Simplifies the XPath expression.
java.lang.String	toString()

Methods inherited from class org.jaxen.expr.DefaultExpr

convertToIterator, convertToList

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

filterExpr

private Expr filterExpr

locationPath

private LocationPath locationPath

Constructor Detail

DefaultPathExpr

DefaultPathExpr(Expr filterExpr,
                LocationPath locationPath)

Method Detail

getFilterExpr

public Expr getFilterExpr()

Description copied from interface: PathExpr

Returns the filter expression that starts the path expression.

Specified by:

getFilterExpr in interface PathExpr

Returns:

the filter expression that starts the path expression

setFilterExpr

public void setFilterExpr(Expr filterExpr)

Description copied from interface: PathExpr

Changes the expression's filter expression.

Specified by:

setFilterExpr in interface PathExpr

Parameters:

filterExpr - the new filter expression

getLocationPath

public LocationPath getLocationPath()

Description copied from interface: PathExpr

Returns the location path part of this path expression.

Specified by:

getLocationPath in interface PathExpr

Returns:

the location path part of this expression

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getText

public java.lang.String getText()

Description copied from interface: Expr

Returns a String containing the XPath expression.

Specified by:

getText in interface Expr

Returns:

the text form of this XPath expression

simplify

public Expr simplify()

Description copied from interface: Expr

Simplifies the XPath expression. For example, the expression //para[1 = 1] could be simplified to //para. In practice, this is usually a noop. Jaxen does not currently perform any simplification.

Specified by:

simplify in interface Expr

Overrides:

simplify in class DefaultExpr

Returns:

the simplified expression

evaluate

public java.lang.Object evaluate(Context context)
                          throws JaxenException

Description copied from interface: Expr

Evaluate the expression in the given context, and return the result. The result will be a java.lang.Double for expressions that return a number, a java.lang.String for expressions that return a string, a java.lang.Boolean for expressions that return a boolean, and a java.util.List for expressions that return a node-set. In the latter case, the elements of the list are the actual objects from the source document model. Copies are not made.

Specified by:

evaluate in interface Expr

Parameters:

context - the context in which the expression is evaluated

Returns:

an object representing the result of the evaluation

Throws:

JaxenException