java.beans

Class Statement

java.lang.Object

java.beans.Statement

Direct Known Subclasses:

Expression

public class Statement
extends Object

A Statement object represents a primitive statement in which a single method is applied to a target and a set of arguments - as in "a.setFoo(b)". Note that where this example uses names to denote the target and its argument, a statement object does not require a name space and is constructed with the values themselves. The statement object associates the named method with its environment as a simple set of values: the target and an array of argument values.

Since:

1.4

Constructor Summary

Constructors

Constructor	Description
Statement(Object target, String methodName, Object[] arguments)	Creates a new Statement object for the specified target object to invoke the method specified by the name and by the array of arguments.

Method Summary

Modifier and Type	Method	Description
void	execute()	The execute method finds a method whose name is the same as the methodName property, and invokes the method on the target.
Object[]	getArguments()	Returns the arguments for the method to invoke.
String	getMethodName()	Returns the name of the method to invoke.
Object	getTarget()	Returns the target object of this statement.
String	toString()	Prints the value of this statement using a Java-style syntax.

Methods inherited from class java.lang.Object

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

Constructor Detail

Statement

@ConstructorProperties(value={"target","methodName","arguments"})
public Statement(Object target,
                                                                                   String methodName,
                                                                                   Object[] arguments)

Creates a new Statement object for the specified target object to invoke the method specified by the name and by the array of arguments.

The target and the methodName values should not be null. Otherwise an attempt to execute this Expression will result in a NullPointerException. If the arguments value is null, an empty array is used as the value of the arguments property.

Parameters:

target - the target object of this statement

methodName - the name of the method to invoke on the specified target

arguments - the array of arguments to invoke the specified method

Method Detail

getTarget

public Object getTarget()

Returns the target object of this statement. If this method returns null, the execute() method throws a NullPointerException.

Returns:

the target object of this statement