Package org.apache.tools.ant
Interface PropertyHelper.PropertyEvaluator
-
- All Superinterfaces:
PropertyHelper.Delegate
- All Known Implementing Classes:
LocalProperties
- Enclosing class:
- PropertyHelper
public static interface PropertyHelper.PropertyEvaluator extends PropertyHelper.Delegate
Looks up a property's value based on its name.Can be used to look up properties in a different storage than the project instance (like local properties for example) or to implement custom "protocols" like Ant's
${toString:refid}syntax.- Since:
- Ant 1.8.0
-
-
Method Summary
Modifier and Type Method Description java.lang.Objectevaluate(java.lang.String property, PropertyHelper propertyHelper)Evaluate a property.
-
-
-
Method Detail
-
evaluate
java.lang.Object evaluate(java.lang.String property, PropertyHelper propertyHelper)Evaluate a property.- Parameters:
property- the property's String "identifier".propertyHelper- the invoking PropertyHelper.- Returns:
- null if the property name could not be found, an
instance of
NullReturnto indicate a property with a name that can be matched but a value ofnulland the property's value otherwise.
-
-