Package ch.obermuhlner.scriptengine.java.execution

Class DefaultExecutionStrategy

java.lang.Object

ch.obermuhlner.scriptengine.java.execution.DefaultExecutionStrategy

All Implemented Interfaces:

ExecutionStrategy

public class DefaultExecutionStrategy
extends Object
implements ExecutionStrategy

The default ExecutionStrategy implementation.

• class implements `Supplier`: the `get()` method is called
• class implements `Runnable`: the `run()` method is called
• class has exactly one public method without arguments: call it

Field Summary

Fields

Modifier and Type	Field	Description
private final Class<?>	clazz
private final Method	method

Constructor Summary

Constructors

Constructor	Description
DefaultExecutionStrategy(Class<?> clazz)	Constructs a DefaultExecutionStrategy for the specified Class.

Method Summary

Modifier and Type	Method	Description
Object	execute(Object instance)	Executes a method on an object instance, or a static method if the specified instance is null.
private static Method	findCallableMethod(Class<?> clazz)

Methods inherited from class java.lang.Object

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

Field Details

clazz

private final Class<?> clazz

method

private final Method method

Constructor Details

DefaultExecutionStrategy

public DefaultExecutionStrategy(Class<?> clazz)

Constructs a DefaultExecutionStrategy for the specified Class.

Parameters:

clazz - the Class

Method Details

execute

public Object execute(Object instance)
               throws ScriptException

Description copied from interface: ExecutionStrategy

Executes a method on an object instance, or a static method if the specified instance is null.

Specified by:

execute in interface ExecutionStrategy

Parameters:

instance - the object instance to be executed or null to execute a static method

Returns:

the return value of the method, or null

Throws:

ScriptException - if no method to execute was found

findCallableMethod

private static Method findCallableMethod(Class<?> clazz)