Adding JMCR-Stable version

[Benchmarks_CSolver.git] / JMCR-Stable / real-world application / derby-10.3.2.1 / java / engine / org / apache / derby / impl / store / raw / data / TruncateOnCommit.java

diff --git a/JMCR-Stable/real-world application/derby-10.3.2.1/java/engine/org/apache/derby/impl/store/raw/data/TruncateOnCommit.java b/JMCR-Stable/real-world application/derby-10.3.2.1/java/engine/org/apache/derby/impl/store/raw/data/TruncateOnCommit.java
new file mode 100644 (file)
index 0000000..b8c904b
--- /dev/null
+++ b/JMCR-Stable/real-world application/derby-10.3.2.1/java/engine/org/apache/derby/impl/store/raw/data/TruncateOnCommit.java
@@ -0,0 +1,108 @@
+/*\r
+\r
+   Derby - Class org.apache.derby.impl.store.raw.data.TruncateOnCommit\r
+\r
+   Licensed to the Apache Software Foundation (ASF) under one or more\r
+   contributor license agreements.  See the NOTICE file distributed with\r
+   this work for additional information regarding copyright ownership.\r
+   The ASF licenses this file to you under the Apache License, Version 2.0\r
+   (the "License"); you may not use this file except in compliance with\r
+   the License.  You may obtain a copy of the License at\r
+\r
+      http://www.apache.org/licenses/LICENSE-2.0\r
+\r
+   Unless required by applicable law or agreed to in writing, software\r
+   distributed under the License is distributed on an "AS IS" BASIS,\r
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+   See the License for the specific language governing permissions and\r
+   limitations under the License.\r
+\r
+ */\r
+\r
+package org.apache.derby.impl.store.raw.data;\r
+\r
+import org.apache.derby.iapi.store.raw.ContainerHandle;\r
+import org.apache.derby.iapi.store.raw.ContainerLock;\r
+import org.apache.derby.iapi.store.raw.Page;\r
+import org.apache.derby.iapi.store.raw.LockingPolicy;\r
+import org.apache.derby.iapi.store.raw.RecordHandle;\r
+import org.apache.derby.iapi.store.raw.ContainerKey;\r
+\r
+import org.apache.derby.iapi.store.raw.data.RawContainerHandle;\r
+import org.apache.derby.iapi.store.raw.log.LogInstant;\r
+import org.apache.derby.iapi.store.raw.xact.RawTransaction;\r
+\r
+import org.apache.derby.iapi.services.locks.Lockable;\r
+\r
+import org.apache.derby.catalog.UUID;\r
+\r
+import org.apache.derby.iapi.error.StandardException;\r
+\r
+import org.apache.derby.iapi.services.sanity.SanityManager;\r
+\r
+import java.util.Observable;\r
+\r
+/**\r
+       Truncate a temp table on a commit, abort or rollback to savepoint\r
+*/\r
+\r
+public class TruncateOnCommit extends ContainerHandleActionOnCommit {\r
+\r
+       /**\r
+               Truncate on a commit as well.\r
+       */\r
+       private boolean commitAsWell;\r
+\r
+       public TruncateOnCommit(ContainerKey identity, boolean commitAsWell) {\r
+\r
+               super(identity);\r
+               this.commitAsWell = commitAsWell;\r
+\r
+               if (SanityManager.DEBUG) {\r
+                       if (identity.getSegmentId() != ContainerHandle.TEMPORARY_SEGMENT)\r
+                               SanityManager.THROWASSERT("segment id is not temp segment " + identity.getSegmentId());\r
+               }\r
+       }\r
+\r
+       public void update(Observable obj, Object arg) {\r
+               if (SanityManager.DEBUG) {\r
+                       if (arg == null)\r
+                               SanityManager.THROWASSERT("still on observer list " + this);\r
+               }\r
+\r
+               if (arg.equals(RawTransaction.ABORT) ||\r
+                       arg.equals(RawTransaction.SAVEPOINT_ROLLBACK) ||\r
+                       (commitAsWell && arg.equals(RawTransaction.COMMIT))) {\r
+                       openContainerAndDoIt((RawTransaction) obj);\r
+               }\r
+\r
+               // remove this object if we are commiting, aborting or the container is being dropped\r
+               if (arg.equals(RawTransaction.COMMIT) || arg.equals(RawTransaction.ABORT)\r
+                       || arg.equals(identity)) {\r
+                       obj.deleteObserver(this);\r
+               }\r
+       }\r
+\r
+       /**\r
+               @exception StandardException Standard Derby error policy\r
+       */\r
+       protected void doIt(BaseContainerHandle handle)\r
+               throws StandardException {\r
+\r
+               handle.container.truncate(handle);\r
+       }\r
+\r
+       public boolean equals(Object other) {\r
+\r
+               if (other instanceof TruncateOnCommit) {\r
+\r
+                       if (((TruncateOnCommit) other).commitAsWell\r
+                               != commitAsWell)\r
+                               return false;\r
+\r
+                       return super.equals(other);\r
+               }\r
+               else\r
+                       return false;\r
+       }\r
+}\r