IBM WebSphere Adapters User Manual page 144

v PropertyGroup – A collection of properties including single and multi types and
v PropertyChangeListener – Used when a property change affects some other
v PropertyChangeEvent – An event that would be passed when propertyChange is
v TableProperty A property representing a table with rows and columns. Each
v TreeProperty A property representing a tree of selectable nodes. Each node is
Enterprise metadata discovery implementation samples
The code samples in this section are from the TwineBall sample enterprise
metadata discovery implementation.
For the precise class structure and additional information, refer to the code for the
TwineBall enterprise metadata discovery implementation that is delivered with the
WebSphere Adapter Toolkit.
Logging and Tracing:
This describes the logging and tracing implementation for enterprise metadata
discovery.
Use the WBIMetadataDiscoveryImpl.getLogUtils() call to acquire an LogUtils
instance. Then use the appropriate method to perform logging and tracing.
Property group sample:
Use the property group APIs to create property groups required for an enterprise
metadata discovery implementation.
To enable validation of specific properties, extend the
WBISingleValuedPropertyImpl or WBIMultiValuedPropertyImpl and then implement
the vetableChange() method. Any validation can be performed in this code. In
case of failures, PropertyVetoException must be thrown.
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PropertyGroup itself. For example, OutboundConnectionConfiguration allows
three property groups in one Main property group: UserConfiguration that
includes Username and Password; MachineConfiguration that includes Hostname
and PortNo; and Miscellaneous that includes other properties such as Prefix
and DirectoryName.
property or property group. This can be associated to any property or a property
group. Each property can, in turn, have associated listeners that it can notify
when a change happens. For example, Property A default value must change
when Property B's value changes. Accordingly, the PropertyChangeListener that
references Property A will be added to the listener list for Property B. When
property B is changed in the set method, propertyChange can be fired on all
listeners in the list. This will lead to changes in Property A.
fired on PropertyChangeListener. It includes the type of change, such as
PROPERTY_VALUE_CHANGE, PROPERTY_ENABLED, PROPERTY_DISABLED,
PROPERTY_VALID_VALUES_CHANGE, OLD_VALUE, NEW_VALUE, and SOURCE_OF_CHANGE.
column is represented by the PropertyDescriptor instance and each cell
corresponding to a given row and column is represented by a
SingleValuedProperty implementation.
represented by a NodeProperty implementation which can be selected,
highlighted and can have configuration properties represented by a
PropertyGroup instance.