Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.common / src / org / simantics / db / common / procedure / single / SyncReadProcedure.java

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/SyncReadProcedure.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/SyncReadProcedure.java
new file mode 100644 (file)
index 0000000..4c8b96f
--- /dev/null
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/SyncReadProcedure.java
@@ -0,0 +1,34 @@
+package org.simantics.db.common.procedure.single;\r
+\r
+import org.simantics.db.AsyncReadGraph;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.procedure.AsyncProcedure;\r
+\r
+final public class SyncReadProcedure<T> implements AsyncProcedure<T> {\r
+\r
+       private Throwable exception = null;\r
+       public T result = null;\r
+       \r
+       @Override\r
+       public synchronized void execute(AsyncReadGraph graph, T t) {\r
+               result = t;\r
+       }\r
+\r
+       @Override\r
+       public void exception(AsyncReadGraph graph, Throwable t) {\r
+               exception = t;\r
+       }\r
+       \r
+       public void checkAndThrow() throws DatabaseException {\r
+               if(exception != null) {\r
+                       if (exception instanceof DatabaseException)\r
+                               throw (DatabaseException) exception;\r
+                       else\r
+                               throw new DatabaseException(\r
+                                               "Unexpected exception in ReadGraph.syncRequest(AsyncRead)",\r
+                                               exception);\r
+               }\r
+       }\r
+       \r
+}\r
+\r