Skip to main content

Notice: this Wiki will be going read only early in 2024 and edits will no longer be possible. Please see: https://gitlab.eclipse.org/eclipsefdn/helpdesk/-/wikis/Wiki-shutdown-plan for the plan.

Jump to: navigation, search

JFace Data Binding/Converter

< JFace Data Binding
Revision as of 22:48, 20 March 2007 by Bradleyjames.gmail.com (Talk | contribs) (Added JFace Data Binding side bar)

In JFace Data Binding converters are used to convert from one value type to another.

JFace Data Binding
Home
How to Contribute
FAQ
Snippets
Concepts
Binding
Converter
Observable
Realm

Converters, implementations of org.eclipse.core.databinding.conversion.IConverter, are a basic yet core part of the binding pipeline. They allow for the conversion between data types. This conversion can be as basic as converting from a primitive (e.g. boolean.class) to a boxed type (e.g. Boolean.class) or as complex as converting a String to an int.

Implementation Design Principles

  1. It's best for the converter to be immutable. This will allow for greater reuse of the instance especially across threads.
  2. Synchronize during convert(...) if necessary. A good example of this is using com.ibm.icu.text.NumberFormat in a converter. NumberFormat expects to be externally synchronized as the state of NumberFormat changes during formatting and parsing. In order to be used across threads access to the internal NumberFormat must be synchronized.
  3. If the converter is converting to a primitive from an object ensure null is handled.

Back to the top