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Add some comments, support for sca-contribution.xml, and use the new tuscany annotations processor

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git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@779023 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
antelder 2009-05-27 06:27:51 +00:00
parent c8a471118f
commit 006f0478cd
1 changed files with 33 additions and 2 deletions
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35
java/sca/distribution/tomcat/tomcat-hook/src/main/java/org/apache/tuscany/sca/tomcat/TuscanyStandardContext.java
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@ -30,18 +30,33 @@ import org.apache.catalina.Loader;
import org.apache.catalina.core.StandardContext;
import org.apache.catalina.deploy.FilterDef;
/**
* A Tuscany StandardContext to initilize SCA applications.
* There is a StandardContext instance for each webapp and its
* called to handle all start/stop/etc requests. This intercepts
* the start and inserts any required Tuscany configuration.
*/
public class TuscanyStandardContext extends StandardContext {
private static final long serialVersionUID = 1L;
private static final Logger log = Logger.getLogger(TuscanyStandardContext.class.getName());
// TODO: this gives an instance per connector, work out how to have only one per server
private ClassLoader tuscanyClassLoader;
/**
* Overrides the getLoader method in the Tomcat StandardContext as its a convenient
* point to insert the Tuscany initilization. This gets called the first time during
* StandardContext.start after the webapp resources have been created so this can
* use getResources() to look for the SCA web.composite or sca-contribution.xml files,
* but its still early enough in start to insert the required Tuscany config.
*/
@Override
public Loader getLoader() {
if (loader != null) {
return loader;
}
if (isSCAAlication()) {
if (isSCAApplication()) {
initTuscany();
}
@ -49,21 +64,37 @@ public class TuscanyStandardContext extends StandardContext {
}
private void initTuscany() {
setParentClassLoader(getTuscanyClassloader());
addApplicationListener("org.apache.tuscany.sca.host.webapp.TuscanyContextListener");
FilterDef filterDef = new FilterDef();
filterDef.setFilterName("TuscanyFilter");
filterDef.setFilterClass("org.apache.tuscany.sca.host.webapp.TuscanyServletFilter");
addFilterDef(filterDef);
if (isUseNaming() && getNamingContextListener() != null) {
setAnnotationProcessor(new TuscanyAnnotationsProcessor(this, getNamingContextListener().getEnvContext()));
} else {
setAnnotationProcessor(new TuscanyAnnotationsProcessor(this, null));
}
log.info("Tuscany enabled for: " + this.getName());
}
private boolean isSCAAlication() {
private boolean isSCAApplication() {
Object o = null;
try {
o = getResources().lookup("WEB-INF/web.composite");
} catch (NamingException e) {
}
if (o == null) {
try {
o = getResources().lookup("META-INF/sca-contribution.xml");
} catch (NamingException e) {
}
}
return o != null;
}