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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17
    18  package org.apache.log4j.db;
    19
    20  import org.apache.log4j.spi.LoggingEvent;
    21
    22  import java.sql.Connection;
    23  import java.sql.SQLException;
    24  import java.sql.Statement;
    25  import java.util.Set;
    26
    27  /**
    28   * @author Ceki G&uuml;lc&uuml;
    29   */
    30  public class DBHelper {
    31
    32      public final static short PROPERTIES_EXIST = 0x01;
    33      public final static short EXCEPTION_EXISTS = 0x02;
    34
    35      public static short computeReferenceMask(LoggingEvent event) {
    36          short mask = 0;
    37          Set propertiesKeys = event.getPropertyKeySet();
    38          if (propertiesKeys.size() > 0) {
    39              mask = PROPERTIES_EXIST;
    40          }
    41          String[] strRep = event.getThrowableStrRep();
    42          if (strRep != null) {
    43              mask |= EXCEPTION_EXISTS;
    44          }
    45          return mask;
    46      }
    47
    48      static public void closeConnection(Connection connection) {
    49          if (connection != null) {
    50              try {
    51                  connection.close();
    52              } catch (SQLException sqle) {
    53                  // static utility classes should not log without an explicit repository
    54                  // reference
    55              }
    56          }
    57      }
    58
    59      public static void closeStatement(Statement statement) {
    60          if (statement != null) {
    61              try {
    62                  statement.close();
    63              } catch (SQLException sqle) {
    64              }
    65          }
    66      }
    67  }