org.andromda.core.common

Class Introspector

java.lang.Object

org.andromda.core.common.Introspector

public final class Introspector
extends Object

A simple class providing the ability to manipulate properties on java bean objects.

Author:

Chad Brandon, Bob Fields

Constructor Summary

Constructors

Constructor and Description
Introspector()

Method Summary

Methods

Modifier and Type	Method and Description
boolean	containsValidProperty(Object object, String name, String value) Indicates whether or not the given object contains a valid property with the given name and value.
Object	getProperty(Object object, String name) Attempts to retrieve the property with the given name on the object.
static Introspector	instance() Gets the shared instance.
boolean	isReadable(Object object, String name) Indicates if the object has a property that is readable with the given name.
boolean	isWritable(Object object, String name) Indicates if the object has a property that is writable with the given name.
void	setProperty(Object object, String name, Object value) Sets the property having the given name on the object with the given value.
void	shutdown() Shuts this instance down and reclaims any resources used by this instance.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Introspector

public Introspector()

Method Detail

instance

public static Introspector instance()

Gets the shared instance.

Returns:

the shared introspector instance.

containsValidProperty

public boolean containsValidProperty(Object object,
                            String name,
                            String value)

Indicates whether or not the given object contains a valid property with the given name and value.

A valid property means the following:

• It exists on the object
• It is not null on the object
• If its a boolean value, then it evaluates to true
• If value is not null, then the property matches the given .value

All other possibilities return false

Parameters:

object - the object to test for the valid property.

name - the name of the property for which to test.

value - the value to evaluate against.

Returns:

true/false

setProperty

public void setProperty(Object object,
               String name,
               Object value)

Sets the property having the given name on the object with the given value.

Parameters:

object - the object on which to set the property.

name - the name of the property to populate.

value - the value to give the property.

getProperty

public final Object getProperty(Object object,
                 String name)

Attempts to retrieve the property with the given name on the object.

Parameters:

object - the object to which the property belongs.

name - the name of the property

Returns:

the value of the property.

isReadable

public boolean isReadable(Object object,
                 String name)

Indicates if the object has a property that is readable with the given name.

Parameters:

object - the object to check.

name - the property to check for.

Returns:

this.getReadMethod(object, name) != null

isWritable

public boolean isWritable(Object object,
                 String name)

Indicates if the object has a property that is writable with the given name.

Parameters:

object - the object to check.

name - the property to check for.

Returns:

this.getWriteMethod(object, name) != null

shutdown

public void shutdown()

Shuts this instance down and reclaims any resources used by this instance.

toString

public String toString()

Overrides:

toString in class Object

See Also:

Object.toString()