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class:Invocable [NONE]


public interface Invocable
The optional interface implemented by ScriptEngines whose methods allow the invocation of procedures in scripts that have previously been executed.
Since:
1.6

method:invokeMethod(java.lang.Object,java.lang.String,java.lang.Object...) [NONE]

  • invokeMethod

    Object invokeMethod (Object thiz, String name, Object... args) throws ScriptException, NoSuchMethodException
    Calls a method on a script object compiled during a previous script execution, which is retained in the state of the ScriptEngine.
    Parameters:
    thiz - If the procedure is a member of a class defined in the script and thiz is an instance of that class returned by a previous execution or invocation, the named method is called through that instance.
    name - The name of the procedure to be called.
    args - Arguments to pass to the procedure. The rules for converting the arguments to scripting variables are implementation-specific.
    Returns:
    The value returned by the procedure. The rules for converting the scripting variable returned by the script method to a Java Object are implementation-specific.
    Throws:
    ScriptException - if an error occurs during invocation of the method.
    NoSuchMethodException - if method with given name or matching argument types cannot be found.
    NullPointerException - if the method name is null.
    IllegalArgumentException - if the specified thiz is null or the specified Object is does not represent a scripting object.
  • method:invokeFunction(java.lang.String,java.lang.Object...) [NONE]

    invokeFunction

    Object invokeFunction (String name, Object... args) throws ScriptException, NoSuchMethodException
    Used to call top-level procedures and functions defined in scripts.
    Parameters:
    name - of the procedure or function to call
    args - Arguments to pass to the procedure or function
    Returns:
    The value returned by the procedure or function
    Throws:
    ScriptException - if an error occurs during invocation of the method.
    NoSuchMethodException - if method with given name or matching argument types cannot be found.
    NullPointerException - if method name is null.

    method:getInterface(java.lang.Class) [NONE]

    getInterface

    <T> T getInterface (Class<T> clasz)
    Returns an implementation of an interface using functions compiled in the interpreter. The methods of the interface may be implemented using the invokeFunction method.
    Type Parameters:
    T - the type of the interface to return
    Parameters:
    clasz - The Class object of the interface to return.
    Returns:
    An instance of requested interface - null if the requested interface is unavailable, i. e. if compiled functions in the ScriptEngine cannot be found matching the ones in the requested interface.
    Throws:
    IllegalArgumentException - if the specified Class object is null or is not an interface.

    method:getInterface(java.lang.Object,java.lang.Class) [NONE]

    getInterface

    <T> T getInterface (Object thiz, Class<T> clasz)
    Returns an implementation of an interface using member functions of a scripting object compiled in the interpreter. The methods of the interface may be implemented using the invokeMethod method.
    Type Parameters:
    T - the type of the interface to return
    Parameters:
    thiz - The scripting object whose member functions are used to implement the methods of the interface.
    clasz - The Class object of the interface to return.
    Returns:
    An instance of requested interface - null if the requested interface is unavailable, i. e. if compiled methods in the ScriptEngine cannot be found matching the ones in the requested interface.
    Throws:
    IllegalArgumentException - if the specified Class object is null or is not an interface, or if the specified Object is null or does not represent a scripting object.

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