X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.db.procore%2Fsrc%2Ffi%2Fvtt%2Fsimantics%2Fprocore%2Finternal%2FWriteStateBase.java;fp=bundles%2Forg.simantics.db.procore%2Fsrc%2Ffi%2Fvtt%2Fsimantics%2Fprocore%2Finternal%2FWriteStateBase.java;h=303e42cfc989e58da286c3f8d8dc5521258fc4b1;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.db.procore/src/fi/vtt/simantics/procore/internal/WriteStateBase.java b/bundles/org.simantics.db.procore/src/fi/vtt/simantics/procore/internal/WriteStateBase.java
new file mode 100644
index 000000000..303e42cfc
--- /dev/null
+++ b/bundles/org.simantics.db.procore/src/fi/vtt/simantics/procore/internal/WriteStateBase.java
@@ -0,0 +1,83 @@
+package fi.vtt.simantics.procore.internal;
+
+import java.util.concurrent.Semaphore;
+
+import org.simantics.db.common.utils.Logger;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.procedure.Procedure;
+import org.simantics.db.request.WriteTraits;
+
+/**
+ * @author Tuukka Lehtonen
+ *
+ * @param <T> result value type
+ */
+public class WriteStateBase<T> {
+
+    final protected WriteTraits request;
+    final protected Semaphore notify;
+    final protected Procedure<T> procedure;
+
+    protected T result;
+    protected Throwable exception;
+
+    public WriteStateBase(WriteTraits request, Semaphore notify, Procedure<T> procedure) {
+        assert(request != null);
+
+        this.request = request;
+        this.notify = notify;
+        this.procedure = procedure;
+    }
+
+    public WriteTraits getRequest() {
+        return request;
+    }
+
+    @SuppressWarnings("unchecked")
+    public void setResult(Object result) {
+        this.result = (T) result;
+    }
+
+    public void except(Throwable throwable) {
+        this.exception = throwable;
+    }
+
+//    public void cancel(CancelTransactionException e) {
+//        this.exception = e;
+//    }
+//
+//    public boolean isCanceled() {
+//        return exception instanceof CancelTransactionException;
+//    }
+
+    public boolean isExcepted() {
+        return exception != null;
+    }
+
+    public void finish() {
+
+        if(procedure != null) {
+
+            try {
+                // Callback is client code, we have to be prepared for it to throw unexpected exceptions.
+                // All we can do here is to log those, can't really pass them anywhere.
+                if (procedure != null) {
+                    if(isExcepted()) {
+                        if(exception instanceof DatabaseException) procedure.exception(exception);
+                        else procedure.exception(new DatabaseException(exception));
+                    }
+                    else procedure.execute(result);
+                }
+            } catch (Throwable t) {
+                Logger.defaultLogError("Write request callback caused an unexpected error, see exception.", t);
+                if (SessionImplSocket.DEBUG)
+                    t.printStackTrace();
+            }
+
+        }
+
+        if(notify != null) notify.release();
+
+    }
+
+}