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;
public RuntimeEnvironmentRequest(Resource parameter) {
super(parameter);
}
-
+
protected void fillEnvironmentSpecification(EnvironmentSpecification environmentSpecification) {
}
- static class UpdateListenerImpl implements UpdateListener {
-
- final EnvironmentSpecification environmentSpecification;
- final Listener<RuntimeEnvironment> callback;
-
- UpdateListenerImpl(EnvironmentSpecification environmentSpecification, Listener<RuntimeEnvironment> callback) {
- this.environmentSpecification = environmentSpecification;
- this.callback = callback;
- }
+ static class UpdateListenerImpl extends UpdateListener {
+
+ final EnvironmentSpecification environmentSpecification;
+ final Listener<RuntimeEnvironment> callback;
+
+ UpdateListenerImpl(EnvironmentSpecification environmentSpecification, Listener<RuntimeEnvironment> callback) {
+ this.environmentSpecification = environmentSpecification;
+ this.callback = callback;
+ }
@Override
public void notifyAboutUpdate() {
- if(callback.isDisposed()) {
- return;
- }
- getRuntimeEnvironment(environmentSpecification, callback, this);
+ 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));
- }
-
- }
-
- };
-
- // 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>();
-
+ }
+ });
+ } 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));
+ }
+
+ }
+
@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");
String mainModuleUri;
if(mainModule != null) {
}
else
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) {
-
- @Override
- public void register(ReadGraph graph, Listener<RuntimeEnvironment> procedure) {
-
- SCLContext context = SCLContext.getCurrent();
- Object oldGraph = context.put("graph", graph);
- try {
-
- if(procedure.isDisposed()) {
- UpdateListenerImpl.getRuntimeEnvironment(environmentSpecification, procedure, null);
- } else {
- UpdateListenerImpl impl = new UpdateListenerImpl(environmentSpecification, procedure);
- impl.notifyAboutUpdate();
- map.put(parameter, impl);
- }
-
- } finally {
- context.put("graph", oldGraph);
- }
-
- }
-
- @Override
- public void unregistered() {
- map.remove(parameter);
+
+ return graph.syncRequest(new ParametrizedPrimitiveRead<String, RuntimeEnvironment>(mainModuleUri) {
+
+ UpdateListenerImpl sclListener;
+
+ @Override
+ public void register(ReadGraph graph, Listener<RuntimeEnvironment> procedure) {
+
+ SCLContext context = SCLContext.getCurrent();
+ Object oldGraph = context.put("graph", graph);
+ try {
+
+ if(procedure.isDisposed()) {
+ getRuntimeEnvironment(environmentSpecification, procedure, null);
+ } else {
+ sclListener = new UpdateListenerImpl(environmentSpecification, procedure);
+ sclListener.notifyAboutUpdate();
+ }
+
+ } finally {
+ context.put("graph", oldGraph);
}
-
- });
+
+ }
+
+ @Override
+ public void unregistered() {
+ if(sclListener != null)
+ sclListener.stopListening();
+ }
+
+ });
}
-
+
@Override
public int hashCode() {
return 31*getClass().hashCode() + super.hashCode();
}
- public static void flush() {
- map.clear();
- }
-
}