public final class ConstructorMethod extends Object implements JexlMethod
Modifier and Type | Method and Description |
---|---|
static ConstructorMethod |
discover(Introspector is,
Object ctorHandle,
Object... args)
Discovers a class constructor and wrap it as a JexlMethod.
|
Class<?> |
getReturnType()
returns the return type of the method invoked.
|
Object |
invoke(Object obj,
Object... params)
Invocation method, called when the method invocation should be performed
and a value returned.
|
boolean |
isCacheable()
Specifies if this JexlMethod is cacheable and able to be reused for this
class of object it was returned for.
|
boolean |
tryFailed(Object rval)
Checks whether a tryInvoke return value indicates a failure or not.
|
Object |
tryInvoke(String name,
Object obj,
Object... params)
Attempts to reuse this JexlMethod, checking that it is compatible with
the actual set of arguments.
|
public static ConstructorMethod discover(Introspector is, Object ctorHandle, Object... args)
is
- the introspectorctorHandle
- a class or class nameargs
- constructor argumentsJexlMethod
public Object invoke(Object obj, Object... params) throws Exception
JexlMethod
invoke
in interface JexlMethod
obj
- the objectparams
- method parameters.Exception
- on any error.public Object tryInvoke(String name, Object obj, Object... params)
JexlMethod
tryInvoke
in interface JexlMethod
name
- the method nameobj
- the object to invoke the method uponparams
- the method argumentspublic boolean tryFailed(Object rval)
JexlMethod
Usage is : Object r = tryInvoke(...); if (tryFailed(r) {...} else {...}
tryFailed
in interface JexlMethod
rval
- the value returned by tryInvokepublic boolean isCacheable()
JexlMethod
isCacheable
in interface JexlMethod
public Class<?> getReturnType()
JexlMethod
getReturnType
in interface JexlMethod
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