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Posted to commits@jena.apache.org by an...@apache.org on 2011/09/08 21:06:56 UTC
svn commit: r1166864 - in
/incubator/jena/Experimental/TxTDB/trunk/src-dev/tx:
GraphTDBTransactionHandler.java TransBlob.java
Author: andy
Date: Thu Sep 8 19:06:55 2011
New Revision: 1166864
URL: http://svn.apache.org/viewvc?rev=1166864&view=rev
Log:
Sketch graph transactions.
Added:
incubator/jena/Experimental/TxTDB/trunk/src-dev/tx/GraphTDBTransactionHandler.java (with props)
incubator/jena/Experimental/TxTDB/trunk/src-dev/tx/TransBlob.java (with props)
Added: incubator/jena/Experimental/TxTDB/trunk/src-dev/tx/GraphTDBTransactionHandler.java
URL: http://svn.apache.org/viewvc/incubator/jena/Experimental/TxTDB/trunk/src-dev/tx/GraphTDBTransactionHandler.java?rev=1166864&view=auto
==============================================================================
--- incubator/jena/Experimental/TxTDB/trunk/src-dev/tx/GraphTDBTransactionHandler.java (added)
+++ incubator/jena/Experimental/TxTDB/trunk/src-dev/tx/GraphTDBTransactionHandler.java Thu Sep 8 19:06:55 2011
@@ -0,0 +1,65 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package tx;
+
+import com.hp.hpl.jena.graph.TransactionHandler ;
+import com.hp.hpl.jena.shared.Command ;
+import com.hp.hpl.jena.tdb.store.GraphTDB ;
+
+public class GraphTDBTransactionHandler implements TransactionHandler
+{
+ // Replaces: TransactionHandlerTDB
+ // Don't know read or write :-(
+ // So grab the real transaction when first update occurs.
+ // Start read.
+ // If update, start write, end read.
+ //
+
+
+ private final GraphTDB graph ;
+
+ public GraphTDBTransactionHandler(GraphTDB graph)
+ { this.graph = graph ; }
+
+ @Override
+ public boolean transactionsSupported()
+ {
+ return false ;
+ }
+
+ @Override
+ public void begin()
+ {}
+
+ @Override
+ public void abort()
+ {}
+
+ @Override
+ public void commit()
+ {}
+
+ @Override
+ public Object executeInTransaction(Command c)
+ {
+ return null ;
+ }
+
+}
+
Propchange: incubator/jena/Experimental/TxTDB/trunk/src-dev/tx/GraphTDBTransactionHandler.java
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Added: incubator/jena/Experimental/TxTDB/trunk/src-dev/tx/TransBlob.java
URL: http://svn.apache.org/viewvc/incubator/jena/Experimental/TxTDB/trunk/src-dev/tx/TransBlob.java?rev=1166864&view=auto
==============================================================================
--- incubator/jena/Experimental/TxTDB/trunk/src-dev/tx/TransBlob.java (added)
+++ incubator/jena/Experimental/TxTDB/trunk/src-dev/tx/TransBlob.java Thu Sep 8 19:06:55 2011
@@ -0,0 +1,88 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package tx;
+
+import java.nio.ByteBuffer ;
+
+import com.hp.hpl.jena.tdb.base.file.BlockAccess ;
+import com.hp.hpl.jena.tdb.sys.FileRef ;
+import com.hp.hpl.jena.tdb.transaction.Journal ;
+import com.hp.hpl.jena.tdb.transaction.JournalEntryType ;
+import com.hp.hpl.jena.tdb.transaction.Transaction ;
+import com.hp.hpl.jena.tdb.transaction.TransactionLifecycle ;
+
+/** Write a blob, transactional */
+public class TransBlob implements TransactionLifecycle
+{
+ // And need a block mgr
+
+ private ByteBuffer bytes ;
+ private final FileRef file ;
+ private final BlockAccess access ;
+
+ public TransBlob(BlockAccess blockAccess, FileRef file)
+ {
+ this.access = blockAccess ;
+ // BlockMgrFileAccess.
+ this.file = file ;
+ }
+
+ public void setValue(ByteBuffer bytes)
+ {
+ // Copy for safety?
+ this.bytes= bytes ;
+ }
+
+ public ByteBuffer getValue()
+ {
+ return bytes ;
+ }
+
+ @Override
+ public void begin(Transaction txn)
+ {
+ }
+
+ @Override
+ public void abort(Transaction txn)
+ {}
+
+ @Override
+ public void commitPrepare(Transaction txn)
+ {
+ Journal journal = txn.getJournal() ;
+ //Block blk = new Block(0, bytes) ;
+ //JournalEntry entry = new JournalEntry(file, blk) ;
+
+ // And reply?
+ journal.writeJournal(JournalEntryType.Buffer, file, bytes) ;
+
+ // replay : fileref -> remembered BlockMgr = BlockMgrFileAccess
+
+ }
+
+ @Override
+ public void commitEnact(Transaction txn)
+ {}
+
+ @Override
+ public void commitClearup(Transaction txn)
+ {}
+}
+
Propchange: incubator/jena/Experimental/TxTDB/trunk/src-dev/tx/TransBlob.java
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