public class MicrosoftSQLServerDataStoreHelper extends GenericDataStoreHelper
MicrosoftSQLServerDataStoreHelper is provided as an implementation of
the DataStoreHelper interface to enable connectivity to Microsoft SQL Server
via the Microsoft SQL Server JDBC Driver.
If you have additional requirements with the Microsoft SQL Server JDBC Driver
or the Microsoft SQL Server database, you should consider subclassing this implementation.
SQLException mappings specific to the
MicrosoftSQLServerDataStoreHelper are the following:
| Error Code | SQL State | PortableSQLException subclass |
|---|---|---|
| 230 | StaleConnectionException.class | |
| 2627 | DuplicateKeyException.class | |
| 6002 | StaleConnectionException.class |
| Modifier and Type | Field and Description |
|---|---|
static java.lang.String[] |
LOCK_OWNER_TPYES |
static java.lang.String[] |
LOCK_REQUEST_MODES |
static java.lang.String[] |
LOCK_REQUEST_STATUSES |
static java.lang.String[] |
RESOURCE_TYPES |
customDefinedWasDefaultIsoLevel, defaultQueryTimeout, EOLN, genErrorMap, resBundle, tranErrorListCLOUDSCAPE_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, DERBY_HELPER, DERBY_NETWORK_SERVER_HELPER, FIRST_TIME_CALLED, GENERIC_HELPER, INFORMIX_HELPER, INFORMIX_JCC_HELPER, MSSQL_HELPER, ORACLE_10G_HELPER, ORACLE_11G_HELPER, ORACLE_HELPER, POTENTIAL_DEADLOCK, POTENTIAL_LOST_UPDATE, PROXY_DS_HELPER, SEQUELINK_HELPER, SUBJECT, SYBASE_HELPER, SYBASE11_HELPER, TX_REPEATABLE_READ_FORUPDATE, TX_SERIALIZABLE_FORUPDATE, UNDEFINED_HELPER, UNDEFINED_ISOLATOIN_LEVEL, UPDATE_ON_READONLY| Constructor and Description |
|---|
MicrosoftSQLServerDataStoreHelper(java.util.Properties props)
This
MicrosoftSQLServerDataStoreHelper constructor creates a new
MicrosoftSQLServerDataStoreHelper based on the DataStoreHelper
properties provided. |
| Modifier and Type | Method and Description |
|---|---|
void |
doStatementCleanup(java.sql.PreparedStatement stmt)
This method cleans up a statement before the statement is returned to the statement
cache.
|
int |
getIsolationLevel(AccessIntent intent)
This method determines the transaction isolation level based on the specified
AccessIntent. |
int |
getResultSetConcurrency(AccessIntent intent)
This method determines the result set concurrency based on the specified
AccessIntent. |
java.lang.String |
showLockInfo(java.util.Properties props)
This method returns lock information for Microsoft SQL Server.
|
calcPartitionNumber, doConnectionCleanup, doConnectionCleanupPerCloseConnection, doConnectionCleanupWithValidCheck, doConnectionSetup, doConnectionSetupPerGetConnection, doConnectionSetupPerTransaction, findMappingClass, getLockType, getMetaData, getPasswordForUseWithTrustedContextWithAuthentication, getPrintWriter, getResultSetType, getXAExceptionContents, hasLostUpdateOrDeadLockOccurred, isBatchUpdateSupportedWithAccessIntent, isConnectionError, isDuplicateKey, isTransientConnectionError, mapException, modifyXAFlag, setConfig, setUserDefinedMappublic static final java.lang.String[] RESOURCE_TYPES
public static final java.lang.String[] LOCK_REQUEST_STATUSES
public static final java.lang.String[] LOCK_OWNER_TPYES
public static final java.lang.String[] LOCK_REQUEST_MODES
public MicrosoftSQLServerDataStoreHelper(java.util.Properties props)
MicrosoftSQLServerDataStoreHelper constructor creates a new
MicrosoftSQLServerDataStoreHelper based on the DataStoreHelper
properties provided. All implementations inheriting from a data store helper
must supply this same list of properties to their super class by invoking the
constructor of their super class with the list of properties.props - DataStoreHelper properties.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 are cached. It is called only if at least one of the following statement properties has changed:
MicrosoftSQLServerDataStoreHelper resets all of the
properties listed above.
The following operations do not need to be included in the statement cleanup since they are automatically performed by the application server 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.
doStatementCleanup in interface DataStoreHelperdoStatementCleanup in class GenericDataStoreHelperstmt - the PreparedStatement.java.sql.SQLException - if an error occurs cleaning up the statement.public int getIsolationLevel(AccessIntent intent) throws javax.resource.ResourceException
AccessIntent.
If the AccessIntent parameter is null, the following default value is
returned:
Connection.TRANSACTION_REPEATABLE_READ.
In the case where an AccessIntent is specified,
MicrosoftSQLServerDataStoreHelper computes the transaction isolation
level as follows:
If the concurrency control is
AccessIntent.CONCURRENCY_CONTROL_OPTIMISTIC then a transaction isolation
level of Connection.TRANSACTION_READ_COMMITTED is returned.
If the concurrency control is
AccessIntent.CONCURRENCY_CONTROL_PESSIMISTIC and the access type is
AccessIntent.ACCESS_TYPE_READ then a transaction isolation level of
Connection.TRANSACTION_REPEATABLE_READ is returned.
If the concurrency control is
AccessIntent.CONCURRENCY_CONTROL_PESSIMISTIC and the access type is
AccessIntent.ACCESS_TYPE_UPDATE then the transation isolation level is
determined from the following table based on the pessimistic update lock hint.
| pessimistic update lock hint | transaction isolation level |
|---|---|
AccessIntent.PESSIMISTIC_UPDATE_LOCK_HINT_NONEAccessIntent.PESSIMISTIC_UPDATE_LOCK_HINT_WEAKEST_LOCK_AT_LOAD |
Connection.TRANSACTION_REPEATABLE_READ |
AccessIntent.PESSIMISTIC_UPDATE_LOCK_HINT_NOCOLLISION |
Connection.TRANSACTION_READ_COMMITTED |
AccessIntent.PESSIMISTIC_UPDATE_LOCK_HINT_EXCLUSIVE |
Connection.TRANSACTION_SERIALIZABLE |
getIsolationLevel in interface DataStoreHelpergetIsolationLevel in class GenericDataStoreHelperintent - An AccessIntentAccessIntent.javax.resource.ResourceException - If a transaction isolation level cannot be determined
from the AccessIntent.AccessIntent,
Connectionpublic int getResultSetConcurrency(AccessIntent intent) throws javax.resource.ResourceException
AccessIntent.
MicrosoftSQLServerDataStoreHelper returns
java.sql.ResultSet.CONCUR_UPDATABLE if the access type of the
AccessIntent is AccessIntent.ACCESS_TYPE_UPDATE and the
concurrency control is AccessIntent.CONCURRENCY_CONTROL_PESSIMISTIC and
the update lock hint is either
AccessIntent.PESSIMISTIC_UPDATE_LOCK_HINT_EXCLUSIVE or
AccessIntent.PESSIMISTIC_UPDATE_LOCK_HINT_NONE. In all other cases,
java.sql.ResultSet.CONCUR_READ_ONLY is returned.getResultSetConcurrency in interface DataStoreHelpergetResultSetConcurrency in class GenericDataStoreHelperintent - An AccessIntent.java.sql.ResultSet.javax.resource.ResourceException - If a result set concurrency cannot be determined
from the AccessIntent.AccessIntent,
ResultSetpublic final java.lang.String showLockInfo(java.util.Properties props)
throws java.lang.Exception
This method returns lock information for Microsoft SQL Server. The
props parameter can include the following properties:
showLockInfo in class GenericDataStoreHelperprops - properties containing information needed to connect to the database.java.lang.Exception - if an error occurs while collecting the lock information.