Package jmri.beans

Class UnboundBean

java.lang.Object

jmri.beans.UnboundBean

All Implemented Interfaces:

BeanInterface

Direct Known Subclasses:

Bean, UnboundArbitraryBean

public abstract class UnboundBean
extends Object
implements BeanInterface

Generic implementation of BeanInterface without support for arbitrary properties defined at runtime.

NOTE This class does not implement PropertyChangeSupport. Subclass Bean if you need to support property change listeners.

Constructor Summary

Constructors

Constructor	Description
UnboundBean()

Method Summary

Modifier and Type	Method	Description
Object	getIndexedProperty(String key, int index)	Get value of element at index of property array key.
Object	getProperty(String key)	Get the value of property key.
Set<String>	getPropertyNames()	Return a list of property names.
boolean	hasIndexedProperty(String key)	Test that a property exists and is indexed.
boolean	hasProperty(String key)	Test if a property exists.
void	setIndexedProperty(String key, int index, Object value)	Set element at index of property array key to value.
void	setProperty(String key, Object value)	Set property key to value.

Methods inherited from class java.lang.Object

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

Constructor Details

UnboundBean

public UnboundBean()

Method Details

getIndexedProperty

public Object getIndexedProperty(String key,
 int index)

Get value of element at index of property array key.

This implementation calls a read method for the indexed property using JavaBeans introspection, and assumes, based on JavaBeans coding patterns, that the read method has the following parameter: index. Note that this method returns null instead of throwing ArrayIndexOutOfBoundsException if the index is invalid since the Java introspection methods provide no reliable way to get the size of the indexed property.

Specified by:

getIndexedProperty in interface BeanInterface

Parameters:

key - name of the property

index - index of the property element to change

Returns:

value of element or null

getProperty

public Object getProperty(String key)

Get the value of property key.

If null is a valid (or expected) value for key, you might want to use hasProperty(java.lang.String) to test that the property exists.

Specified by:

getProperty in interface BeanInterface

Parameters:

key - name of the property

Returns:

value of key or null.

See Also:

• BeanInterface.getProperty(java.lang.String)

getPropertyNames

public Set<String> getPropertyNames()

Return a list of property names.

Specified by:

getPropertyNames in interface BeanInterface

Returns:

a Set of names

See Also:

• BeanInterface.getPropertyNames()

hasProperty

public boolean hasProperty(String key)

Test if a property exists.

Specified by:

hasProperty in interface BeanInterface

Parameters:

key - name of the property

Returns:

true if property exists

See Also:

• BeanInterface.hasProperty(java.lang.String)

hasIndexedProperty

public boolean hasIndexedProperty(String key)

Description copied from interface: BeanInterface

Test that a property exists and is indexed.

NOTE Implementing method must not call Bean.hasIndexedProperty(), as doing so will cause a stack overflow. Implementing methods may call Beans.hasIntrospectedIndexedProperty() instead.

Specified by:

hasIndexedProperty in interface BeanInterface

Parameters:

key - name of the property

Returns:

true is property key exists and is indexed

setIndexedProperty

public void setIndexedProperty(String key,
 int index,
 Object value)

Set element at index of property array key to value.

This implementation calls a write method for the indexed property using JavaBeans introspection, and assumes, based on JavaBeans coding patterns, that the write method has the following two parameters in order: index, value.

Specified by:

setIndexedProperty in interface BeanInterface

Parameters:

key - name of the property

index - index of the property element to change

value - the value to set the property to

See Also:

• BeanInterface.setIndexedProperty(java.lang.String, int, java.lang.Object)

setProperty

public void setProperty(String key,
 Object value)

Set property key to value.

This implementation calls a write method for the property using JavaBeans introspection.

Specified by:

setProperty in interface BeanInterface

Parameters:

key - name of the property

value - the value to set the property to

See Also:

• BeanInterface.setProperty(java.lang.String, java.lang.Object)