Package org.jaxen.expr

Class DefaultPredicate

java.lang.Object

org.jaxen.expr.DefaultPredicate

All Implemented Interfaces:

Serializable, Predicate

class DefaultPredicate
extends Object
implements Predicate

Field Summary

Fields

Modifier and Type	Field	Description
private Expr	expr
private static final long	serialVersionUID

Constructor Summary

Constructors

Constructor	Description
DefaultPredicate(Expr expr)

Method Summary

Modifier and Type	Method	Description
Object	evaluate(Context context)	Evaluates this predicate's expression and returns the result.
Expr	getExpr()	Returns the expression in this predicate.
String	getText()	Returns the string form of the predicate, including the square brackets.
void	setExpr(Expr expr)	Change the expression used by this predicate.
void	simplify()	Simplify the expression in this predicate.
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

expr

private Expr expr

Constructor Details

DefaultPredicate

DefaultPredicate(Expr expr)

Method Details

getExpr

public Expr getExpr()

Description copied from interface: Predicate

Returns the expression in this predicate.

Specified by:

getExpr in interface Predicate

Returns:

the expression between the brackets

setExpr

public void setExpr(Expr expr)

Description copied from interface: Predicate

Change the expression used by this predicate.

Specified by:

setExpr in interface Predicate

Parameters:

expr - the new expression

getText

public String getText()

Description copied from interface: Predicate

Returns the string form of the predicate, including the square brackets.

Specified by:

getText in interface Predicate

Returns:

the bracketed form of this predicate

toString

public String toString()

Overrides:

toString in class Object

simplify

public void simplify()

Description copied from interface: Predicate

Simplify the expression in this predicate.

Specified by:

simplify in interface Predicate

See Also:

• Expr.simplify()

evaluate

public Object evaluate(Context context)
                throws JaxenException

Description copied from interface: Predicate

Evaluates this predicate's expression and returns 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 Predicate

Parameters:

context - the context in which the expression is evaluated

Returns:

an object representing the result of the evaluation

Throws:

JaxenException

See Also:

• Expr.evaluate(Context)