Incremental Project Builders
Identifier:
org.eclipse.core.resources.builders
Description:
The workspace supports the notion of an incremental
project builder (or "builder" for short"). The job
of a builder is to process a set of resource changes
(supplied as a resource delta). For example, a Java
builder would recompile changed Java files and produce
new class files.
Builders are confgured on a per-project basis and run
automatically when resources within their project are
changed. As such, builders should be fast and scale
with respect to the amount of change rather than the
number of resources in the project. This typically
implies that builders are able to incrementally update
their "built state".
The builders extension-point allows builder writers
to register their builder implementation under a
symbolic name that is then used from within the
workspace to find and run builders. The symbolic
name is the id of the builder extension. When defining a builder extension, users are encouraged to include a human-readable value for the "name" attribute which identifies their builder and potentially may be presented to users.
Configuration Markup:
<!ELEMENT extension (builder)>
<!ATTLIST extension
point CDATA #REQUIRED
id CDATA #REQUIRED
name CDATA #IMPLIED>
- point - a fully qualified identifier of the target extension point
- id - an optional identifier of the extension instance
- name - an optional name of the extension instance
<!ELEMENT builder (run?)>
<!ATTLIST builder
hasNature (true | false)
isConfigurable (true | false) >
- hasNature - "true" or "false" indicating whether the builder is owned by
a project nature. If "true" and no corresponding nature is
found, this builder will not run but will remain in the project's
build spec. If the attribute is not specified, it is assumed to be "false".
- isConfigurable - "true" or "false" indicating whether the builder allows customization of what build triggers it will respond to. If "true", clients will be able to use the API ICommand.setBuilding to specify if this builder should be run for a particular build trigger. If the attribute is not specified, it is assumed to be "false".
<!ELEMENT run (parameter*)>
<!ATTLIST run
class CDATA #REQUIRED>
- class - the fully-qualified name of a subclass of
org.eclipse.core.resources.IncrementalProjectBuilder.
<!ELEMENT parameter EMPTY>
<!ATTLIST parameter
name CDATA #REQUIRED
value CDATA #REQUIRED>
- name - the name of this parameter made available to
instances of the specified builder class
- value - an arbitrary value associated with the given
name and made available to instances of the
specified builder class
Examples:
Following is an example of a builder configuration:
<extension id=
"coolbuilder"
name=
"Cool Builder"
point=
"org.eclipse.core.resources.builders"
>
<builder hasNature=
"false"
>
<run class=
"com.xyz.builders.Cool"
>
<parameter name=
"optimize"
value=
"true"
/>
<parameter name=
"comment"
value=
"Produced by the Cool Builder"
/>
</run>
</builder>
</extension>
If this extension was defined in a plug-in with id "com.xyz.coolplugin", the fully qualified name of this builder would be "com.xyz.coolplugin.coolbuilder".
API Information:
The value of the class attribute must represent a
subclass of
org.eclipse.core.resources.IncrementalProjectBuilder.
Supplied Implementation:
The platform itself does not have any predefined
builders. Particular product installs may include
builders as required.
Copyright (c) 2002, 2005 IBM Corporation and others.
All rights reserved. This program and the accompanying materials are made
available under the terms of the Eclipse Public License v1.0 which
accompanies
this distribution, and is available at
http://www.eclipse.org/legal/epl-v10.html