Only release rolled-back database savepoints during managed nested transaction

Issue: SPR-12228

spring-jdbc/src/main/java/org/springframework/jdbc/datasource/JdbcTransactionObjectSupport.java

@@ -127,12 +127,6 @@ public abstract class JdbcTransactionObjectSupport implements SavepointManager,
 		catch (Throwable ex) {
 			throw new TransactionSystemException("Could not roll back to JDBC savepoint", ex);
 		}
-		try {
-			conHolder.getConnection().releaseSavepoint((Savepoint) savepoint);
-		}
-		catch (Throwable ex) {
-			logger.debug("Could not explicitly release JDBC savepoint after rollback", ex);
-		}
 	}
 
 	/**

spring-orm/src/main/java/org/springframework/orm/jpa/vendor/OpenJpaDialect.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2014 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,6 +21,7 @@ import java.sql.SQLException;
 import javax.persistence.EntityManager;
 import javax.persistence.PersistenceException;
 
+import org.apache.commons.logging.LogFactory;
 import org.apache.openjpa.persistence.OpenJPAEntityManager;
 import org.apache.openjpa.persistence.OpenJPAPersistence;
 
@@ -103,7 +104,13 @@ public class OpenJpaDialect extends DefaultJpaDialect {
 
 		@Override
 		public void releaseSavepoint(Object savepoint) throws TransactionException {
-			this.entityManager.releaseSavepoint((String) savepoint);
+			try {
+				this.entityManager.releaseSavepoint((String) savepoint);
+			}
+			catch (Throwable ex) {
+				LogFactory.getLog(OpenJpaTransactionData.class).debug(
+						"Could not explicitly release OpenJPA savepoint", ex);
+			}
 		}
 	}
 

spring-tx/src/main/java/org/springframework/transaction/SavepointManager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2014 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -38,12 +38,12 @@ public interface SavepointManager {
 
 	/**
 	 * Create a new savepoint. You can roll back to a specific savepoint
-	 * via {@code rollbackToSavepoint}, and explicitly release a
-	 * savepoint that you don't need anymore via {@code releaseSavepoint}.
+	 * via {@code rollbackToSavepoint}, and explicitly release a savepoint
+	 * that you don't need anymore via {@code releaseSavepoint}.
 	 * <p>Note that most transaction managers will automatically release
 	 * savepoints at transaction completion.
-	 * @return a savepoint object, to be passed into rollbackToSavepoint
-	 * or releaseSavepoint
+	 * @return a savepoint object, to be passed into
+	 * {@link #rollbackToSavepoint} or {@link #releaseSavepoint}
 	 * @throws NestedTransactionNotSupportedException if the underlying
 	 * transaction does not support savepoints
 	 * @throws TransactionException if the savepoint could not be created,
@@ -53,8 +53,10 @@ public interface SavepointManager {
 	Object createSavepoint() throws TransactionException;
 
 	/**
-	 * Roll back to the given savepoint. The savepoint will be
-	 * automatically released afterwards.
+	 * Roll back to the given savepoint.
+	 * <p>The savepoint will <i>not</i> be automatically released afterwards.
+	 * You may explicitly call {@link #releaseSavepoint(Object)} or rely on
+	 * automatic release on transaction completion.
 	 * @param savepoint the savepoint to roll back to
 	 * @throws NestedTransactionNotSupportedException if the underlying
 	 * transaction does not support savepoints
@@ -66,9 +68,9 @@ public interface SavepointManager {
 	/**
 	 * Explicitly release the given savepoint.
 	 * <p>Note that most transaction managers will automatically release
-	 * savepoints at transaction completion.
-	 * <p>Implementations should fail as silently as possible if
-	 * proper resource cleanup will still happen at transaction completion.
+	 * savepoints on transaction completion.
+	 * <p>Implementations should fail as silently as possible if proper
+	 * resource cleanup will eventually happen at transaction completion.
 	 * @param savepoint the savepoint to release
 	 * @throws NestedTransactionNotSupportedException if the underlying
 	 * transaction does not support savepoints

spring-tx/src/main/java/org/springframework/transaction/support/AbstractTransactionStatus.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2014 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -145,13 +145,16 @@ public abstract class AbstractTransactionStatus implements TransactionStatus {
 	}
 
 	/**
-	 * Roll back to the savepoint that is held for the transaction.
+	 * Roll back to the savepoint that is held for the transaction
+	 * and release the savepoint right afterwards.
 	 */
 	public void rollbackToHeldSavepoint() throws TransactionException {
 		if (!hasSavepoint()) {
-			throw new TransactionUsageException("No savepoint associated with current transaction");
+			throw new TransactionUsageException(
+					"Cannot roll back to savepoint - no savepoint associated with current transaction");
 		}
 		getSavepointManager().rollbackToSavepoint(getSavepoint());
+		getSavepointManager().releaseSavepoint(getSavepoint());
 		setSavepoint(null);
 	}
 
@@ -160,7 +163,8 @@ public abstract class AbstractTransactionStatus implements TransactionStatus {
 	 */
 	public void releaseHeldSavepoint() throws TransactionException {
 		if (!hasSavepoint()) {
-			throw new TransactionUsageException("No savepoint associated with current transaction");
+			throw new TransactionUsageException(
+					"Cannot release savepoint - no savepoint associated with current transaction");
 		}
 		getSavepointManager().releaseSavepoint(getSavepoint());
 		setSavepoint(null);