IDEMPIERE-5376 CConnection and DB clean up (#1432)

org.adempiere.base/src/org/compiere/db/CConnection.java

@@ -1116,7 +1116,6 @@ public class CConnection implements Serializable, Cloneable
 	 *  @param transactionIsolation Connection transaction level
 	 *  @return Connection
 	 */
-	@SuppressWarnings("unused")
 	public Connection getConnection (boolean autoCommit, int transactionIsolation)
 	{
 		Connection conn = null;
@@ -1131,20 +1130,9 @@ public class CConnection implements Serializable, Cloneable
 		}
 		//
 
-		try
-		{
-		//	if (!Ini.isClient()			//	Server
-		//		&& trxLevel != Connection.TRANSACTION_READ_COMMITTED)		// PO_LOB.save()
-		//	{
-			//Exception ee = null;
 		try
 		{
 			conn = m_db.getCachedConnection(this, autoCommit, transactionIsolation);
-			}
-			catch (Exception e)
-			{
-				//ee = e;
-			}
 			//	Verify Connection
 			if (conn != null)
 			{
@@ -1160,19 +1148,13 @@ public class CConnection implements Serializable, Cloneable
 			String msg = ule.getLocalizedMessage()
 				+ " -> Did you set the LD_LIBRARY_PATH ? - " + getConnectionURL();
 			m_dbException = new Exception(msg);
-			log.severe(msg);
+			System.err.println(msg);
 		}
 		catch (SQLException ex)
 		{
 			m_dbException = ex;
 			if (conn == null)
 			{
-				//log might cause infinite loop since it will try to acquire database connection again
-				/*
-				log.log(Level.SEVERE, getConnectionURL ()
-					+ ", (1) AutoCommit=" + autoCommit + ",TrxIso=" + getTransactionIsolationInfo(transactionIsolation)
-					+ " - " + ex.getMessage());
-				*/
 				System.err.println(getConnectionURL ()
 						+ ", (1) AutoCommit=" + autoCommit + ",TrxIso=" + getTransactionIsolationInfo(transactionIsolation)
 						+ " - " + ex.getMessage());
@@ -1181,17 +1163,15 @@ public class CConnection implements Serializable, Cloneable
 			{
 				try
 				{
-					log.severe(getConnectionURL ()
+					System.err.println(getConnectionURL ()
 						+ ", (2) AutoCommit=" + conn.getAutoCommit() + "->" + autoCommit
 						+ ", TrxIso=" + getTransactionIsolationInfo(conn.getTransactionIsolation()) + "->" + getTransactionIsolationInfo(transactionIsolation)
-					//	+ " (" + getDbUid() + "/" + getDbPwd() + ")"
 						+ " - " + ex.getMessage());
 				}
 				catch (Exception ee)
 				{
-					log.severe(getConnectionURL ()
+					System.err.println(getConnectionURL ()
-						+ ", (3) AutoCommit=" + autoCommit + ", TrxIso=" + getTransactionIsolationInfo(transactionIsolation)
+							+ ", (1) AutoCommit=" + autoCommit + ",TrxIso=" + getTransactionIsolationInfo(transactionIsolation)
-					//	+ " (" + getDbUid() + "/" + getDbPwd() + ")"
 							+ " - " + ex.getMessage());
 				}
 			}
@@ -1199,11 +1179,8 @@ public class CConnection implements Serializable, Cloneable
 		catch (Exception ex)
 		{
 			m_dbException = ex;
-			//log might cause infinite loop since it will try to acquire database connection again
-			//log.log(Level.SEVERE, getConnectionURL(), ex);
 			System.err.println(getConnectionURL() + " - " + ex.getLocalizedMessage());
 		}
-	//	System.err.println ("CConnection.getConnection - " + conn);
 		return conn;
 	}	//  getConnection
 
@@ -1214,7 +1191,7 @@ public class CConnection implements Serializable, Cloneable
 	public Exception getDatabaseException ()
 	{
 		return m_dbException;
-	} 	//  getConnectionException
+	}
 
 	/*************************************************************************/
 

org.adempiere.base/src/org/compiere/util/DB.java

@@ -419,20 +419,10 @@ public final class DB
 	public static Connection createConnection (boolean autoCommit, int trxLevel)
 	{
 		Connection conn = s_cc.getConnection (autoCommit, trxLevel);
-		if (CLogMgt.isLevelFinest())
+
+		if (conn == null)
         {
-			/**
+            throw new IllegalStateException("DB.createConnection - @NoDBConnection@");
-			try
-			{
-				log.finest(s_cc.getConnectionURL()
-					+ ", UserID=" + s_cc.getDbUid()
-					+ ", AutoCommit=" + conn.getAutoCommit() + " (" + autoCommit + ")"
-					+ ", TrxIso=" + conn.getTransactionIsolation() + "( " + trxLevel + ")");
-			}
-			catch (Exception e)
-			{
-			}
-			**/
         }
 		
 		//hengsin: failed to set autocommit can lead to severe lock up of the system
@@ -447,46 +437,19 @@ public final class DB
 	}	//	createConnection
 
     /**
+     *  @Deprecated (since="10", forRemoval=true)
      *  Create new Connection.
      *  The connection must be closed explicitly by the application
      *
      *  @param autoCommit auto commit
+     *  @param readOnly ignore
      *  @param trxLevel - Connection.TRANSACTION_READ_UNCOMMITTED, Connection.TRANSACTION_READ_COMMITTED, Connection.TRANSACTION_REPEATABLE_READ, or Connection.TRANSACTION_READ_COMMITTED.
      *  @return Connection connection
+     *  @deprecated
      */
     public static Connection createConnection (boolean autoCommit, boolean readOnly, int trxLevel)
     {
-        Connection conn = s_cc.getConnection (autoCommit, trxLevel);
+        return createConnection(autoCommit, trxLevel);
-
-        //hengsin: this could be problematic as it can be reuse for readwrite activites after return to pool
-        /*
-        if (conn != null)
-        {
-            try
-            {
-                conn.setReadOnly(readOnly);
-            }
-            catch (SQLException ex)
-            {
-                conn = null;
-                log.log(Level.SEVERE, ex.getMessage(), ex);
-            }
-        }*/
-
-        if (conn == null)
-        {
-            throw new IllegalStateException("DB.getConnectionRO - @NoDBConnection@");
-        }
-
-        //hengsin: failed to set autocommit can lead to severe lock up of the system
-        try {
-	        if (conn.getAutoCommit() != autoCommit)
-	        {
-	        	throw new IllegalStateException("Failed to set the requested auto commit mode on connection. [autocommit=" + autoCommit +"]");
-	        }
-        } catch (SQLException e) {}
-
-        return conn;
     }   //  createConnection
 
 	/**

org.adempiere.base/src/org/idempiere/db/util/AutoCommitConnectionBroker.java

@@ -45,7 +45,7 @@ public class AutoCommitConnectionBroker {
 			} 
 		} catch (SQLException e) {}
     	
-    	Connection connection = DB.createConnection(true, false, Connection.TRANSACTION_READ_COMMITTED);
+    	Connection connection = DB.createConnection(true, Connection.TRANSACTION_READ_COMMITTED);
 		connReference = new ConnectionReference(connection);
 		threadLocalConnection.set(connReference);
 		return connection;