import org.simantics.db.AsyncReadGraph;
import org.simantics.db.common.GraphSemaphore;
import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.exception.RuntimeDatabaseException;
import org.simantics.db.impl.DebugPolicy;
import org.simantics.db.impl.graph.ReadGraphImpl;
import org.simantics.db.procedure.AsyncProcedure;
import org.simantics.db.request.AsyncRead;
-final public class AsyncReadEntry<T> extends CacheEntryBase<AsyncProcedure<T>> {
+final public class AsyncReadEntry<T> extends CacheEntryBase<AsyncProcedure<T>> implements AsyncProcedure<T> {
protected AsyncRead<T> request;
AsyncReadEntry(AsyncRead<T> request) {
- this.request = request;
- if(DebugPolicy.QUERY_STATE) System.out.println("[QUERY STATE]: created " + this);
+ this.request = request;
+ if (DebugPolicy.QUERY_STATE)
+ System.out.println("[QUERY STATE]: created " + this);
}
@Override
int makeHash() {
- return request.hashCode();
+ return request.hashCode();
}
-
+
@Override
public Object getOriginalRequest() {
return request;
}
-
+
@Override
public void discard() {
- super.discard();
- setResult(null);
+ super.discard();
+ setResult(null);
}
-
- final public void addOrSet(AsyncReadGraph graph, Object item) {
-// System.err.println("addOrSet " + request + " " + Thread.currentThread() + " " + item);
-
- assert(isPending());
-
- synchronized(this) {
- setResult(item);
- setReady();
- }
-
- }
-
-
public void except(AsyncReadGraph graph, Throwable t) {
-
- assert(isPending());
- synchronized(this) {
+ assert (isPending());
+
+ synchronized (this) {
except(t);
}
-
+
}
-
-
+
@Override
final public Query getQuery() {
-
+
return new Query() {
- @Override
- public void recompute(ReadGraphImpl graph) {
+ @Override
+ public void recompute(ReadGraphImpl graph) {
- try {
+ try {
- GraphSemaphore s = new GraphSemaphore(graph, 0);
-
- request.perform(graph , new AsyncProcedure<T>() {
+ GraphSemaphore s = new GraphSemaphore(graph, 0);
+
+ request.perform(graph, new AsyncProcedure<T>() {
@Override
public void execute(AsyncReadGraph graph, T result) {
- addOrSet(graph, result);
+ setResult(result);
+ setReady();
s.release();
}
-
- @Override
- public void exception(AsyncReadGraph graph, Throwable t) {
- except(t);
+
+ @Override
+ public void exception(AsyncReadGraph graph, Throwable t) {
+ except(t);
s.release();
}
s.waitFor(1);
- } catch (Throwable t) {
- except(t);
+ } catch (Throwable t) {
+ except(t);
}
-
- }
-
- @Override
- public void removeEntry(QueryProcessor qp) {
- qp.cache.remove(AsyncReadEntry.this);
- }
-
- @Override
- public int type() {
- return request.getFlags();
- }
-
- @Override
- public String toString() {
- if(request == null) return "DISCARDED";
- else if(isExcepted()) return request.toString() + " " + getResult();
- else return request.toString() + " " + statusOrException;
- }
-
+
+ }
+
+ @Override
+ public void removeEntry(QueryProcessor qp) {
+ qp.cache.remove(AsyncReadEntry.this);
+ }
+
+ @Override
+ public int type() {
+ return request.getFlags();
+ }
+
+ @Override
+ public String toString() {
+ if (request == null)
+ return "DISCARDED";
+ else if (isExcepted())
+ return request.toString() + " " + getResult();
+ else
+ return request.toString() + " " + statusOrException;
+ }
+
};
-
+
}
@Override
- public Object performFromCache(ReadGraphImpl graph, AsyncProcedure<T> proc) {
-
- if(isExcepted()) {
-
+ public Object performFromCache(ReadGraphImpl graph, AsyncProcedure<T> proc) {
+
+ if (isExcepted()) {
+
try {
- proc.exception(graph, (Throwable)getResult());
+ proc.exception(graph, (Throwable) getResult());
} catch (Throwable t) {
t.printStackTrace();
}
-
+
} else {
-
+
try {
- proc.execute(graph, (T)getResult());
+ proc.execute(graph, (T) getResult());
} catch (Throwable t) {
t.printStackTrace();
}
-
+
+ }
+
+ return getResult();
+
+ }
+
+ public static <T> void computeForEach(ReadGraphImpl parentGraph, AsyncRead<T> request, AsyncReadEntry<T> entry,
+ AsyncProcedure<T> procedure_) throws DatabaseException {
+
+ AsyncProcedure<T> procedure = entry != null ? entry : procedure_;
+
+ GraphSemaphore s = new GraphSemaphore(parentGraph, 0);
+
+ ReadGraphImpl queryGraph = parentGraph.withParent(entry);
+
+ request.perform(queryGraph, new AsyncProcedure<T>() {
+
+ @Override
+ public void execute(AsyncReadGraph returnGraph, T result) {
+ try {
+ procedure.execute(parentGraph, result);
+ } catch (Throwable t) {
+ t.printStackTrace();
+ }
+ s.release();
+ }
+
+ @Override
+ public void exception(AsyncReadGraph returnGraph, Throwable t) {
+ try {
+ procedure.exception(parentGraph, t);
+ } catch (Throwable t2) {
+ t2.printStackTrace();
+ }
+ s.release();
+ }
+
+ @Override
+ public String toString() {
+ return procedure.toString();
+ }
+
+ });
+
+ try {
+ s.waitFor(1);
+ } catch (InterruptedException e) {
+ throw new RuntimeDatabaseException(e);
}
-
- return getResult();
-
- }
-
- //@Override
- public Object compute(ReadGraphImpl graph, AsyncProcedure<T> procedure) throws DatabaseException {
-
- ReadGraphImpl queryGraph = graph.withParent(this);
-
- request.perform(queryGraph, new AsyncProcedure<T>() {
-
- @Override
- public void execute(AsyncReadGraph returnGraph, T result) {
- ReadGraphImpl impl = (ReadGraphImpl)returnGraph;
- AsyncReadEntry.this.addOrSet(graph, result);
- try {
- procedure.execute(graph, result);
- } catch (Throwable t) {
- t.printStackTrace();
- }
- // parentBarrier.dec(query);
- }
-
- @Override
- public void exception(AsyncReadGraph returnGraph, Throwable t) {
- ReadGraphImpl impl = (ReadGraphImpl)returnGraph;
- // AsyncReadGraph resumeGraph = finalParentGraph.newAsync();
- AsyncReadEntry.this.except(graph, t);
- try {
- procedure.exception(graph, t);
- } catch (Throwable t2) {
- t2.printStackTrace();
- }
- // parentBarrier.dec(query);
- }
-
- @Override
- public String toString() {
- return procedure.toString();
- }
-
- });
-
- return getResult();
-
+
+ if (entry != null)
+ entry.performFromCache(parentGraph, procedure_);
+
+ }
+
+ @Override
+ public String toString() {
+ if (isDiscarded())
+ return "DISCARDED " + request.toString();
+ else if (isExcepted())
+ return request.toString() + " " + getResult();
+ else
+ return request.toString() + " " + statusOrException;
}
-
- public static <T> void computeForEach(ReadGraphImpl parentGraph, AsyncRead<T> request, AsyncReadEntry<T> entry, AsyncProcedure<T> procedure) throws DatabaseException {
-
- ReadGraphImpl queryGraph = parentGraph.withParent(entry);
-
- request.perform(queryGraph, new AsyncProcedure<T>() {
-
- @Override
- public void execute(AsyncReadGraph returnGraph, T result) {
- ReadGraphImpl impl = (ReadGraphImpl)returnGraph;
- if(entry != null) entry.addOrSet(parentGraph, result);
- try {
- procedure.execute(parentGraph, result);
- } catch (Throwable t) {
- t.printStackTrace();
- }
- }
-
- @Override
- public void exception(AsyncReadGraph returnGraph, Throwable t) {
- ReadGraphImpl impl = (ReadGraphImpl)returnGraph;
- if(entry != null) entry.except(parentGraph, t);
- try {
- procedure.exception(parentGraph, t);
- } catch (Throwable t2) {
- t2.printStackTrace();
- }
- }
-
- @Override
- public String toString() {
- return procedure.toString();
- }
-
- });
-
+
+ @Override
+ public void execute(AsyncReadGraph graph, T result) {
+ setResult(result);
+ setReady();
+ }
+
+ @Override
+ public void exception(AsyncReadGraph graph, Throwable throwable) {
+ except(throwable);
}
-
-
- @Override
- public String toString() {
- if(isDiscarded()) return "DISCARDED " + request.toString();
- else if(isExcepted()) return request.toString() + " " + getResult();
- else return request.toString() + " " + statusOrException;
- }
}
Code Review / simantics / platform.git / blobdiff