Package org.jaxen.expr
Class DefaultFilterExpr
java.lang.Object
org.jaxen.expr.DefaultFilterExpr
- All Implemented Interfaces:
Serializable
,Expr
,FilterExpr
,Predicated
- See Also:
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Constructor Summary
ConstructorsConstructorDescriptionDefaultFilterExpr
(Expr expr, PredicateSet predicateSet) DefaultFilterExpr
(PredicateSet predicateSet) -
Method Summary
Modifier and TypeMethodDescriptionvoid
addPredicate
(Predicate predicate) Add an additional predicate to this object.boolean
Returns true if the current filter matches at least one of the context nodesstatic Iterator
convertToIterator
(Object obj) static List
convertToList
(Object obj) Evaluate the expression in the given context, and return the result.getExpr()
Returns a possibly empty list of predicates.Returns a possibly empty set of predicates.getText()
Returns a String containing the XPath expression.simplify()
Simplifies the XPath expression.toString()
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Constructor Details
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DefaultFilterExpr
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DefaultFilterExpr
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Method Details
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addPredicate
Description copied from interface:Predicated
Add an additional predicate to this object.- Specified by:
addPredicate
in interfacePredicated
- Parameters:
predicate
- the predicate to add
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getPredicates
Description copied from interface:Predicated
Returns a possibly empty list of predicates.- Specified by:
getPredicates
in interfacePredicated
- Returns:
- the list of predicates
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getPredicateSet
Description copied from interface:Predicated
Returns a possibly empty set of predicates.- Specified by:
getPredicateSet
in interfacePredicated
- Returns:
- the set of predicates
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getExpr
- Specified by:
getExpr
in interfaceFilterExpr
- Returns:
- the underlying filter expression
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toString
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getText
Description copied from interface:Expr
Returns a String containing the XPath expression. -
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. -
asBoolean
Returns true if the current filter matches at least one of the context nodes- Specified by:
asBoolean
in interfaceFilterExpr
- Returns:
- true if a node matches; false if no node matches
- Throws:
JaxenException
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evaluate
Description copied from interface:Expr
Evaluate the expression in the given context, and return the result. The result will be ajava.lang.Double
for expressions that return a number, ajava.lang.String
for expressions that return a string, ajava.lang.Boolean
for expressions that return a boolean, and ajava.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 interfaceExpr
- Parameters:
context
- the context in which the expression is evaluated- Returns:
- an object representing the result of the evaluation
- Throws:
JaxenException
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convertToIterator
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convertToList
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