#919 - io.ebean package initial

src/main/java/io/ebeaninternal/server/transaction/ExplicitJdbcTransaction.java

@@ -0,0 +1,45 @@
+package io.ebeaninternal.server.transaction;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.SQLException;
+
+/**
+ * This only works for Postgres and H2 (and doesn't work for Oracle).
+ * <p>
+ * Uses explicit begin statement to start the transactions.
+ */
+public class ExplicitJdbcTransaction extends JdbcTransaction {
+
+  public ExplicitJdbcTransaction(String id, boolean explicit, Connection connection, TransactionManager manager) {
+    super(id, explicit, connection, manager);
+  }
+
+  @Override
+  protected void checkAutoCommit(Connection connection) throws SQLException {
+    // begin the transaction explicitly
+    executeStatement("begin");
+  }
+
+  @Override
+  protected void performRollback() throws SQLException {
+    // Postgres needs this explicit rollback statement when used with AutoCommit=true
+    executeStatement("rollback");
+  }
+
+  @Override
+  protected void performCommit() throws SQLException {
+    // Postgres needs this explicit commit statement when used with AutoCommit=true
+    executeStatement("commit");
+  }
+
+  private void executeStatement(String statement) throws SQLException {
+    PreparedStatement stmt = connection.prepareStatement(statement);
+    try {
+      stmt.execute();
+    } finally {
+      stmt.close();
+    }
+  }
+
+}