package org.simantics.db.layer0.util;
-import java.util.HashMap;
-import java.util.Map;
-
import org.simantics.db.ReadGraph;
import org.simantics.db.Resource;
import org.simantics.db.common.request.ParametrizedPrimitiveRead;
protected void fillEnvironmentSpecification(EnvironmentSpecification environmentSpecification) {
}
- static class UpdateListenerImpl implements UpdateListener {
+ static class UpdateListenerImpl extends UpdateListener {
final EnvironmentSpecification environmentSpecification;
final Listener<RuntimeEnvironment> callback;
@Override
public void notifyAboutUpdate() {
if(callback.isDisposed()) {
+ stopListening();
return;
}
getRuntimeEnvironment(environmentSpecification, callback, this);
}
+ };
- final public static void getRuntimeEnvironment(EnvironmentSpecification environmentSpecification, Listener<RuntimeEnvironment> callback, UpdateListenerImpl listener) {
-
- try {
-
- SCLContext context = SCLContext.getCurrent();
-
- RuntimeEnvironment env;
- Object graph = context.get("graph");
- if(graph == null)
- try {
- env = SimanticsInternal.getSession().syncRequest(new Read<RuntimeEnvironment>() {
- @Override
- public RuntimeEnvironment perform(ReadGraph graph) throws DatabaseException {
-
- SCLContext sclContext = SCLContext.getCurrent();
- Object oldGraph = sclContext.get("graph");
- try {
- sclContext.put("graph", graph);
- return SCLOsgi.MODULE_REPOSITORY.createRuntimeEnvironment(
- environmentSpecification,
- callback.getClass().getClassLoader(), listener);
- } catch (ImportFailureException e) {
- throw new DatabaseException(e);
- } catch (Throwable t) {
- throw new DatabaseException(t);
- } finally {
- sclContext.put("graph", oldGraph);
- }
+ public static void getRuntimeEnvironment(EnvironmentSpecification environmentSpecification, Listener<RuntimeEnvironment> callback, UpdateListenerImpl listener) {
+
+ try {
+
+ SCLContext context = SCLContext.getCurrent();
+
+ RuntimeEnvironment env;
+ Object graph = context.get("graph");
+ if(graph == null)
+ try {
+ env = SimanticsInternal.getSession().syncRequest(new Read<RuntimeEnvironment>() {
+ @Override
+ public RuntimeEnvironment perform(ReadGraph graph) throws DatabaseException {
+
+ SCLContext sclContext = SCLContext.getCurrent();
+ Object oldGraph = sclContext.get("graph");
+ try {
+ sclContext.put("graph", graph);
+ return SCLOsgi.MODULE_REPOSITORY.createRuntimeEnvironment(
+ environmentSpecification,
+ callback.getClass().getClassLoader(), listener);
+ } catch (ImportFailureException e) {
+ throw new DatabaseException(e);
+ } catch (Throwable t) {
+ throw new DatabaseException(t);
+ } finally {
+ sclContext.put("graph", oldGraph);
}
- });
- } catch (DatabaseException e) {
- callback.exception(e);
- return;
- }
- else
- env = SCLOsgi.MODULE_REPOSITORY.createRuntimeEnvironment(
- environmentSpecification,
- callback.getClass().getClassLoader(), listener);
- callback.execute(env);
- } catch (ImportFailureException e) {
- callback.exception(new DatabaseException(e));
- }
-
- }
-
- };
+ }
+ });
+ } catch (DatabaseException e) {
+ callback.exception(e);
+ return;
+ }
+ else
+ env = SCLOsgi.MODULE_REPOSITORY.createRuntimeEnvironment(
+ environmentSpecification,
+ callback.getClass().getClassLoader(), listener);
+ callback.execute(env);
+ } catch (ImportFailureException e) {
+ callback.exception(new DatabaseException(e));
+ }
- // This is needed to prevent garbage collection from collecting UpdateListenerImpls
- // -ModuleRepository only makes a weak reference to the listener
- final static Map<String, UpdateListenerImpl> map = new HashMap<String, UpdateListenerImpl>();
+ }
@Override
public RuntimeEnvironment perform(ReadGraph graph)
throws DatabaseException {
final EnvironmentSpecification environmentSpecification = EnvironmentSpecification.of(
"Builtin", "",
- "Prelude", "",
+ "StandardLibrary", "",
"Simantics/All", "");
fillEnvironmentSpecification(environmentSpecification);
Resource mainModule = Layer0Utils.getPossibleChild(graph, parameter, "SCLMain");
mainModuleUri = graph.getURI(parameter) + "/#"; // Add something dummy to the model uri that cannot be in a real URI
return graph.syncRequest(new ParametrizedPrimitiveRead<String, RuntimeEnvironment>(mainModuleUri) {
-
+
+ UpdateListenerImpl sclListener;
+
@Override
public void register(ReadGraph graph, Listener<RuntimeEnvironment> procedure) {
try {
if(procedure.isDisposed()) {
- UpdateListenerImpl.getRuntimeEnvironment(environmentSpecification, procedure, null);
+ getRuntimeEnvironment(environmentSpecification, procedure, null);
} else {
- UpdateListenerImpl impl = new UpdateListenerImpl(environmentSpecification, procedure);
- impl.notifyAboutUpdate();
- map.put(parameter, impl);
- }
+ sclListener = new UpdateListenerImpl(environmentSpecification, procedure);
+ sclListener.notifyAboutUpdate();
+ }
} finally {
context.put("graph", oldGraph);
@Override
public void unregistered() {
- map.remove(parameter);
+ if(sclListener != null)
+ sclListener.stopListening();
}
});
return 31*getClass().hashCode() + super.hashCode();
}
- public static void flush() {
- map.clear();
- }
-
}