rich client platform part1.mht

Rich Client Tutorial

  can't run OSGi commands if the program has already terminated.=20
  <DT><B>'1.4' target mode requires '-1.4' compliance mode: 1.3</B>=20
  <DD>This is one of the more annoying PDE build errors, especially =
since you=20
  have to go hunt in a zip file for it. To correct it, go to Window &gt; =

  Preferences &gt; Java &gt; Compiler &gt; Compliance and Classfiles. =
Adjust the=20
  compliance levels as follows:<BR>
  <TABLE border=3D1>
    <TBODY>
    <TR>
      <TD>Compiler compliance level:=20
      <TD>1.4=20
    <TR>
      <TD>Use default compliance settings:=20
      <TD>off=20
    <TR>
      <TD>Generated .class files compatibility:=20
      <TD>1.4=20
    <TR>
      <TD>Source compatibility:=20
      <TD>1.4=20
    <TR>
      <TD>Disallow identifiers called 'assert':=20
      <TD>Error </TR></TBODY></TABLE>
  <DT><B>java.lang.RuntimeException: Application=20
  "org.eclipse.ui.tutorials.rcp.part1.RcpApplication" could not be found =
in the=20
  registry. The applications available are: &lt;NONE&gt;. </B>
  <DD>This is caused by a missing plug-in, most commonly=20
  <CODE>org.eclipse.update.configurator</CODE>. The update configurator =
is=20
  responsible for scanning the plugins directory to discover what =
plug-ins are=20
  available. Without it, you have to list them out manually in a =
configuration=20
  file (config.ini). Unfortunately this plug-in is not part of the =
standard RCP=20
  SDK, so you have to copy it from the regular Eclipse SDK.=20
  <DT><B>java.lang.NoClassDefFoundError: =
org/eclipse/swt/widgets/Control</B>=20
  <BR>(a number of different SWT classes may be mentioned in the error)=20
  <DD>When running an RCP application under Linux GTK you need specify =
command=20
  line options that identify your operating and windowing system, for =
example,=20
  <CODE>-os linux -ws gtk</CODE>. When running under Mac OS, you need to =
use the=20
  java_swt program that came with the Eclipse SDK instead of the normal =
java=20
  program. </DD></DL>
<H2>Compatibility and migration</H2>
<P>Astute readers will notice a new 3.0 version comment in plugin.xml =
and a few=20
references in Eclipse wizards and documentation to OSGi and an optional =
manifest=20
file called MANIFEST.MF. What's all that about? For the most part this =
is=20
transparent and RCP developers don't have to worry about it. But just in =
case,=20
let's take a few moments to discuss these changes from Eclipse 2.1. </P>
<P>The 3.0 tag in plugin.xml (<CODE>&lt;?eclipse =
version=3D"3.0"?&gt;</CODE>) says=20
whether or not the plugin.xml itself is in 3.0 form. For Eclipse 3.0 =
there were=20
various changes to the plugins (code moved, new plugins, etc.) and =
various=20
extension points moved. The presence of the 3.0 tag tells the runtime =
that it=20
does not need to do any "munging" of the plugin.xml to map the old =
form/names=20
onto the new form/names. </P>
<P>If you need to convert a version 2.1 plug-in to 3.0, we suggest you =
use the=20
PDE 3.0 migration wizard instead of doing it manually. To run it from =
the=20
Package Explorer, right click on plugin.xml and select PDE Tools &gt; =
Migrate to=20
3.0. After you do this the plug-in will not function in earlier versions =
of=20
Eclipse. The tool does all the munging to use a compatibility layer=20
(<CODE>org.eclipse.core.runtime.compatibility</CODE>), updates your =
classpaths,=20
and so forth. Later you can consult the Eclipse 3.0 Plug-in Migration =
Guide (see=20
the references or online help) for assistance in converting any =
deprecated API=20
calls. After all the old calls have been removed you can replace the=20
compatibility layer with the regular runtime code=20
(<CODE>org.eclipse.core.runtime</CODE>). </P>
<P>Finally, Eclipse 3.0 introduced a new run-time system based on OSGi =
standards=20
that uses bundles and a new manifest file (MANIFEST.MF) to implement =
plug-ins.=20
The use of MANIFEST.MF, in normal circumstances, is completely optional. =
You=20
will notice that almost all of the 3.0 SDK plug-ins do NOT have one yet =
all are=20
marked as 3.0 and many do not require the compatibility layer. The only =
reason=20
you would want to have a MANIFEST.MF is if you need to use a particular =
OSGi=20
capability that is not exposed through plugin.xml (for example, =
import-package).=20
Otherwise it's recommended at this time that you don't have one. </P>
<H2>Conclusion</H2>
<P>In part 1 of this tutorial, we looked at what is necessary to create =
a=20
bare-bones Rich Client application. The next part will delve into =
customizations=20
using the WorkbenchAdvisor class. All the sample code for this part may =
be=20
viewed at the <A=20
href=3D"http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.ui.tutorials=
.rcp.part1">Eclipse=20
project here</A>. You can use <A=20
href=3D"http://dev.eclipse.org/cvshowto.html">Eclipse's built-in CVS =
client</A> to=20
download the source to your workspace. </P>
<H2>References</H2><A=20
href=3D"http://eclipse.org/articles/Article-RCP-2/tutorial2.html">RCP =
Tutorial=20
Part 2</A><BR><A=20
href=3D"http://eclipse.org/articles/Article-RCP-3/tutorial3.html">RCP =
Tutorial=20
Part 3</A><BR><A=20
href=3D"http://dev.eclipse.org/viewcvs/index.cgi/~checkout~/platform-ui-h=
ome/rcp/index.html">Eclipse=20
Rich Client Platform</A><BR><A=20
href=3D"http://dev.eclipse.org/viewcvs/index.cgi/~checkout~/org.eclipse.u=
i.examples.rcp.browser/readme.html">RCP=20
Browser example (project org.eclipse.ui.examples.rcp.browser)</A><BR><A=20
href=3D"http://eclipse.org/articles/Article-PDE-does-plugins/PDE-intro.ht=
ml">PDE=20
Does Plug-ins</A><BR><A=20
href=3D"http://eclipse.org/articles/Article-Internationalization/how2I18n=
.html">How=20
to Internationalize your Eclipse Plug-in</A><BR><A=20
href=3D"http://eclipse.org/articles/Article-Plug-in-architecture/plugin_a=
rchitecture.html">Notes=20
on the Eclipse Plug-in Architecture</A><BR><A=20
href=3D"http://help.eclipse.org/help30/index.jsp?topic=3D/org.eclipse.pla=
tform.doc.isv/porting/eclipse_3_0_porting_guide.html">Eclipse=20
3.0 Plug-in Migration Guide</A><BR>
<P><SMALL>IBM is trademark of International Business Machines =
Corporation in the=20
United States, other countries, or both.</SMALL></P>
<P><SMALL>Java and all Java-based trademarks and logos are trademarks or =

registered trademarks of Sun Microsystems, Inc. in the United States, =
other=20
countries, or both.</SMALL></P>
<P><SMALL>Microsoft and Windows are trademarks of Microsoft Corporation =
in the=20
United States, other countries, or both.</SMALL></P>
<P><SMALL>Other company, product, and service names may be trademarks or =
service=20
marks of others.</SMALL></P></BODY></HTML>

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