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## com.beasys.commerce.util
Class JdbcHelper

    java.lang.Object
      |
      +--com.beasys.commerce.util.JdbcHelper

Deprecated. Use `JdbcHelper`

public class JdbcHelper
extends Object

Field Summary
`static boolean` | `shouldUseClobsForReads` Deprecated. Controls whether we should use the Clob object or the ResultSet.getString() method to retrieve CLOB columns.
`static boolean` | `shouldUseClobsForWrites` Deprecated. Controls whether we should use the setCharacterStream() or the ResultSet.setString() method to set CLOB columns.
`static Boolean` | `supportsLikeEscapeClause` Deprecated. Determine if the server configuration supports the LIKE ESCAPE clause.

Constructor Summary
`JdbcHelper()` Deprecated. Helper constructor comment.

Method Summary
`static void` | `close(Connection con)` Deprecated.
`static void` | `close(ResultSet rs)` Deprecated.
`static void` | `close(Statement stmt)` Deprecated.
`static Object` | `deserialize(ResultSet rs, int index)` Deprecated.
`static String` | `getClob(ResultSet rs, int index)` Deprecated.
`static Reader` | `getClobReader(ResultSet rs, int index)` Deprecated.
`static Connection` | `getConnection(DataSource src, int maxRetries)` Deprecated.
`static Connection` | `getConnection(DataSource src, int maxRetries, long waitTime)` Deprecated.
`static double` | `getDouble(ResultSet rs, int index)` Deprecated.
`static double` | `getDouble(ResultSet rs, String colName)` Deprecated.
`static float` | `getFloat(ResultSet rs, int index)` Deprecated.
`static float` | `getFloat(ResultSet rs, String colName)` Deprecated.
`static int` | `getInt(ResultSet rs, int index)` Deprecated.
`static int` | `getInt(ResultSet rs, String colName)` Deprecated.
`static long` | `getLong(ResultSet rs, int index)` Deprecated.
`static long` | `getLong(ResultSet rs, String colName)` Deprecated.
`static boolean` | `isNoResourceException(SQLException ex)` Deprecated.
`static void` | `serialize(PreparedStatement ps, int index, Serializable obj)` Deprecated.
`static void` | `setClob(PreparedStatement stmt, int index, Reader in, int length)` Deprecated.
`static void` | `setClob(PreparedStatement stmt, int index, String str)` Deprecated.
`static boolean` | `supportsLikeEscapeClause(Connection con)` Deprecated.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### supportsLikeEscapeClause

    public static final Boolean supportsLikeEscapeClause

  Deprecated.
  Determine if the server configuration supports the LIKE ESCAPE clause.

  This variable will initialized from the "commerce.jdbc.supportsLikeEscapeClause" property in weblogiccommerce.properties.

  If this is null, then no configuration was specified and the JDBC connection should be queries. Otherwise, this will be true or false.

### shouldUseClobsForReads

    public static final boolean shouldUseClobsForReads

  Deprecated.
  Controls whether we should use the Clob object or the ResultSet.getString() method to retrieve CLOB columns.

  This variable will initialized from the "commerce.jdbc.read.shouldUseClobs" property in weblogiccommerce.properties. Defaults to false

### shouldUseClobsForWrites

    public static final boolean shouldUseClobsForWrites

  Deprecated.
  Controls whether we should use the setCharacterStream() or the ResultSet.setString() method to set CLOB columns.

  This variable will initialized from the "commerce.jdbc.write.shouldUseClobs" property in weblogiccommerce.properties. Defaults to false

Constructor Detail

### JdbcHelper

    public JdbcHelper()

  Deprecated.
  Helper constructor comment.

Method Detail

### getConnection

    public static Connection getConnection(DataSource src,
                                           int maxRetries,
                                           long waitTime)
                                    throws SQLException

  Deprecated.

  Get a connection from a DataSource with retry and timeout logic.

  This will retry upto maxRetries. Additionally, it will only retry for waitTime number of milliseconds (as best as possible -- it might be longer, but will not be less).

  This will always try at least once to get a connection. Use maxRetries=0 for only a single attempt.

  This works with both transactional and non-transaction DataSources tied to WLS connection pools. In WLS, transactional DataSources always internally wait 5 seconds for a new connection; non-transaction DataSources don't wait at all.

  Parameters:
    `src` - the data source.
    `maxRetries` - the maximum number of times to retry (less than 0 for infinite).
    `waitTime` - the maximum number of milliseconds to try (less than 0 for infinite).
  Returns:
    a connection from the data source on success.
  Throws:
    `SQLException` - thrown on an error getting a connection.
  See Also:
    `isNoResourceException(java.sql.SQLException)`

### getConnection

    public static Connection getConnection(DataSource src,
                                           int maxRetries)
                                    throws SQLException

  Deprecated.

  Get a connection from a DataSource with retry logic.

  Parameters:
    `src` - the data source.
    `maxRetries` - the maximum number of times to retry (less than 0 for infinite).
  Returns:
    a connection from the data source on success.
  Throws:
    `SQLException` - thrown on an error getting a connection.

### isNoResourceException

    public static boolean isNoResourceException(SQLException ex)

  Deprecated.

  Tell if a SQLException is telling that no resources/connections are available right now.

  When WLS doesn't have an available connection for a DataSource (either TX or non-TX), it will throw a SQLException with a message following this regular expression: "ResourceException.+[Nn]o.+available". That seems to the only way to tell if a connection wasn't availble from the underlying pool.

### serialize

    public static void serialize(PreparedStatement ps,
                                 int index,
                                 Serializable obj)
                          throws SQLException,
                                 IOException

  Deprecated.

  Convenience method for serializing an object to a JDBC stream. Serializes the object and calls setBinaryStream() on the prepared statement. The data will be written out later when the statment is executed. Note: getBinaryStream() requires the size of the data bytes, so cannot use PipeInputStream, PipeOutputStream

  Parameters:
    `ps` - PreparedStatement.
    `index` - placeholder index of the serialized object.
    `obj` - Object to be serialized.
    `SQLException`
    `IOException`

### deserialize

    public static Object deserialize(ResultSet rs,
                                     int index)
                              throws SQLException,
                                     IOException,
                                     StreamCorruptedException,
                                     ClassNotFoundException

  Deprecated.

  Convenience method for de-serializing an object from a JDBC source. Note: This method may be able to use PipedOutputStream and PipedInputStream.

  Parameters:
    `index` - table column index.
    `SQLException`
    `IOException`
    `StreamCorruptedException`
    `ClassNotFoundException`

### supportsLikeEscapeClause

    public static boolean supportsLikeEscapeClause(Connection con)

  Deprecated.

  Determine if the given connection supports the LIKE ESCAPE clause.

  This first checks the `supportsLikeEscapeClause` varaible. It then checks with the Connection DatabaseMetaData.

### getInt

    public static int getInt(ResultSet rs,
                             int index)
                      throws SQLException

  Deprecated.

  Retrieve an int value from the ResultSet at the given index.

  This will validate if the underlying column was null.

  Parameters:
    `rs` - the result set.
    `index` - the column index.
  Returns:
    the column value (0 for null column).
  Throws:
    `SQLException` - from retrieving the column.

### getInt

    public static int getInt(ResultSet rs,
                             String colName)
                      throws SQLException

  Deprecated.

  Retrieve an int value from the ResultSet at the given column.

  This will validate if the underlying column was null.

  Parameters:
    `rs` - the result set.
    `colName` - the column name.
  Returns:
    the column value (0 for null column).
  Throws:
    `SQLException` - from retrieving the column.

### getLong

    public static long getLong(ResultSet rs,
                               int index)
                        throws SQLException

  Deprecated.

  Retrieve a long value from the ResultSet at the given index.

  This will validate if the underlying column was null.

  Parameters:
    `rs` - the result set.
    `index` - the column index.
  Returns:
    the column value (0 for null column).
  Throws:
    `SQLException` - from retrieving the column.

### getLong

    public static long getLong(ResultSet rs,
                               String colName)
                        throws SQLException

  Deprecated.

  Retrieve a long value from the ResultSet at the given column.

  This will validate if the underlying column was null.

  Parameters:
    `rs` - the result set.
    `colName` - the column name.
  Returns:
    the column value (0 for null column).
  Throws:
    `SQLException` - from retrieving the column.

### getFloat

    public static float getFloat(ResultSet rs,
                                 int index)
                          throws SQLException

  Deprecated.

  Retrieve a float value from the ResultSet at the given index.

  This will validate if the underlying column was null.

  Parameters:
    `rs` - the result set.
    `index` - the column index.
  Returns:
    the column value (0 for null column).
  Throws:
    `SQLException` - from retrieving the column.

### getFloat

    public static float getFloat(ResultSet rs,
                                 String colName)
                          throws SQLException

  Deprecated.

  Retrieve a float value from the ResultSet at the given column.

  This will validate if the underlying column was null.

  Parameters:
    `rs` - the result set.
    `colName` - the column name.
  Returns:
    the column value (0 for null column).
  Throws:
    `SQLException` - from retrieving the column.

### getDouble

    public static double getDouble(ResultSet rs,
                                   int index)
                            throws SQLException

  Deprecated.

  Retrieve a double value from the ResultSet at the given index.

  This will validate if the underlying column was null.

  Parameters:
    `rs` - the result set.
    `index` - the column index.
  Returns:
    the column value (0 for null column).
  Throws:
    `SQLException` - from retrieving the column.

### getDouble

    public static double getDouble(ResultSet rs,
                                   String colName)
                            throws SQLException

  Deprecated.

  Retrieve a double value from the ResultSet at the given column.

  This will validate if the underlying column was null.

  Parameters:
    `rs` - the result set.
    `colName` - the column name.
  Returns:
    the column value (0 for null column).
  Throws:
    `SQLException` - from retrieving the column.

### getClob

    public static String getClob(ResultSet rs,
                                 int index)
                          throws SQLException

  Deprecated.

  Get the value of a CLOB column as a string.

  This is controlled by the value of `shouldUseClobsForReads`.

  Parameters:
    `rs` - the result set.
    `index` - the column index in the result set.
  Returns:
    the column as a string.
  Throws:
    `SQLException` - thrown on an error.

### getClobReader

    public static Reader getClobReader(ResultSet rs,
                                       int index)
                                throws SQLException

  Deprecated.

  Get the value of a CLOB column as a reader.

  This is controlled by the value of `shouldUseClobsForReads`.

  Parameters:
    `rs` - the result set.
    `index` - the column index in the result set.
  Returns:
    the column as a reader, null on null.
  Throws:
    `SQLException` - thrown on an error.

### setClob

    public static void setClob(PreparedStatement stmt,
                               int index,
                               String str)
                        throws SQLException

  Deprecated.

  Set the value of a CLOB column with a string.

  This is controlled by the value of `shouldUseClobsForWrites`.

  Parameters:
    `stmt` - the prepared statement.
    `index` - the column index.
    `str` - the CLOB string.
  Throws:
    `SQLException` - thrown on an error.

### setClob

    public static void setClob(PreparedStatement stmt,
                               int index,
                               Reader in,
                               int length)
                        throws SQLException

  Deprecated.

  Set the value of a CLOB column with an input reader.

  This is controlled by the value of `shouldUseClobsForWrites`.

  Parameters:
    `stmt` - the prepared statement.
    `index` - the column index.
    `in` - the CLOB input reader.
  Throws:
    `SQLException` - thrown on an error.

### close

    public static void close(Connection con)

  Deprecated.

  Close a connection, ignoring any errors.

### close

    public static void close(Statement stmt)

  Deprecated.

  Close a statement, ignoring any errors.

### close

    public static void close(ResultSet rs)

  Deprecated.

  Close a result set, ignoring any errors.

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Copyright © 2003 BEA Systems, Inc. All Rights Reserved