com.ibm.websphere.rsadapter
Class SequeLinkDataStoreHelper

java.lang.Object
  |
  +--com.ibm.websphere.rsadapter.GenericDataStoreHelper
        |
        +--com.ibm.websphere.rsadapter.DataDirectDataStoreHelper
              |
              +--com.ibm.websphere.rsadapter.SequeLinkDataStoreHelper
All Implemented Interfaces:
DataStoreHelper, java.io.Serializable
public class SequeLinkDataStoreHelper
extends DataDirectDataStoreHelper
implements java.io.Serializable

SequeLinkDataStoreHelper is a DataStoreHelper implementation customized for the SequeLink JDBC driver. SQLException mapping is handled by the DataDirectDataStoreHelper. If you have additional requirements on the SequeLink JDBC driver consider subclassing this implementation.

See Also:
Serialized Form

Field Summary
 
Fields inherited from class com.ibm.websphere.rsadapter.GenericDataStoreHelper
EOLN, genErrorMap, resBundle
 
Fields inherited from interface com.ibm.websphere.rsadapter.DataStoreHelper
CLOUDSCAPE_HELPER, CLOUDSCAPE_NETWORK_SERVER_HELPER, CONNECTJDBC_HELPER, CUSTOM_HELPER, DATADIRECT_HELPER, DB2_390_HELPER, DB2_390_LOCAL_HELPER, DB2_400_HELPER, DB2_HELPER, DB2_UNIVERSAL_HELPER, GENERIC_HELPER, INFORMIX_HELPER, MSSQL_HELPER, ORACLE_HELPER, POTENTIAL_DEADLOCK, POTENTIAL_LOST_UPDATE, SEQUELINK_HELPER, SYBASE_HELPER, SYBASE11_HELPER, TX_REPEATABLE_READ_FORUPDATE, TX_SERIALIZABLE_FORUPDATE, UPDATE_ON_READONLY, WSCONNECTJDBC_HELPER
 
Constructor Summary
SequeLinkDataStoreHelper(java.util.Properties props)
          This SequeLinkDataStoreHelper constructor creates a new SequeLinkDataStoreHelper based on the DataStoreHelper properties provided.
 
Method Summary
 void doConnectionSetup(java.sql.Connection conn)
          This method configures a connection before first use.
 void doStatementCleanup(java.sql.PreparedStatement stmt)
          This method cleans up a statement before the statement is returned to the statement cache.
 
Methods inherited from class com.ibm.websphere.rsadapter.DataDirectDataStoreHelper
findMappingClass, getIsolationLevel, getPrintWriter, getResultSetConcurrency, isDataDirectExp, setUserDefinedMap, showLockInfo
 
Methods inherited from class com.ibm.websphere.rsadapter.GenericDataStoreHelper
calcPartitionNumber, doConnectionCleanup, getLockType, getMetaData, getResultSetType, getXAExceptionContents, hasLostUpdateOrDeadLockOccurred, isBatchUpdateSupportedWithAccessIntent, isConnectionError, mapException, mapException, modifyXAFlag, processGenericCredentials, processSQL, processSQL
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

SequeLinkDataStoreHelper

public SequeLinkDataStoreHelper(java.util.Properties props)
This SequeLinkDataStoreHelper constructor creates a new SequeLinkDataStoreHelper based on the DataStoreHelper properties provided. The properties parameter is provided only for future extensibility and is currently unused.

Parameters:
props - DataStoreHelper properties.
Method Detail

doConnectionSetup

public void doConnectionSetup(java.sql.Connection conn)
                       throws java.sql.SQLException

This method configures a connection before first use. This method is invoked only when a new connection to the database is created. It is not invoked when connections are reused from the connection pool.

Specified by:
doConnectionSetup in interface DataStoreHelper
Overrides:
doConnectionSetup in class DataDirectDataStoreHelper
Parameters:
conn - the connection to set up.
Throws:
java.sql.SQLException - if connection setup cannot be completed successfully.

doStatementCleanup

public void doStatementCleanup(java.sql.PreparedStatement stmt)
                        throws java.sql.SQLException

This method cleans up a statement before the statement is returned to the statement cache. This method is called only for statements that will be cached. It is called only if at least one of the following statement properties has changed,

  • cursorName
  • escapeProcessing
  • fetchDirection
  • maxFieldSize
  • maxRows
  • queryTimeout

SequeLinkDataStoreHelper resets all of the statement properties listed above except for the cursorName property.

The following operations do not need to be included in the statement cleanup since they are automatically performed by WebSphere when caching statements,

  • setFetchSize(0)
  • clearParameters()
  • clearWarnings()

A helper class implementing this method may choose to do additional cleanup for the statement. However, this should never include closing the statement, since the statement is intended to be cached.

Specified by:
doStatementCleanup in interface DataStoreHelper
Overrides:
doStatementCleanup in class GenericDataStoreHelper
Parameters:
stmt - the PreparedStatement.
Throws:
java.sql.SQLException - if an error occurs cleaning up the statement.

 

WebSphere is a trademark of the IBM Corporation in the United States, other countries, or both.

 

IBM is a trademark of the IBM Corporation in the United States, other countries, or both.