org.jaxen.expr
Class DefaultPathExpr

java.lang.Object
  extended by org.jaxen.expr.DefaultExpr
      extended by 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

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