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java.lang.Object | +--com.ibm.websphere.rsadapter.GenericDataStoreHelper | +--com.ibm.websphere.rsadapter.DataDirectDataStoreHelper
This is a helper class customized for the dataDirect database. It allows us to plug in data store specific functions. When trying to map an exception, the dataDirect errormap will be searched first then the generic one will be searched.
If you have any special dataDirect requirements, you might want to look into extending this class and overwriting the methods you wish to change.
Fields inherited from class com.ibm.websphere.rsadapter.GenericDataStoreHelper |
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EOLN, genErrorMap, resBundle |
Fields inherited from interface com.ibm.websphere.rsadapter.DataStoreHelper |
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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 | |
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DataDirectDataStoreHelper(java.util.Properties props)
Constructor, the property is passed in case some info is needed in the future, for now this parameter is not used. |
Method Summary | |
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void |
doConnectionSetup(java.sql.Connection conn)
This method allows the DataStoreHelper to set any connection properties that are not specified in the default configuration. |
java.lang.Class |
findMappingClass(java.sql.SQLException e)
This method returns mapping for a given exception if one is found. |
int |
getIsolationLevel(com.ibm.websphere.appprofile.accessintent.AccessIntent aIntent)
This method returns the isolation level given the Intent object. |
java.io.PrintWriter |
getPrintWriter()
This method is used to get the printWriter to be used to output jdbc logging when database logging is enabled (e.g. |
protected boolean |
isDataDirectExp(java.sql.SQLException e)
This method checks if an exception is a dataDirect exception or a dataDirect-vendor (i.e. |
void |
setUserDefinedMap(java.util.Map newmap)
This method is used to add user defined error maps. |
java.lang.String |
showLockInfo(java.util.Properties props)
This method returns lock information for MS SQLServer. |
Methods inherited from class com.ibm.websphere.rsadapter.GenericDataStoreHelper |
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calcPartitionNumber, doConnectionCleanup, doStatementCleanup, getLockType, getMetaData, getResultSetConcurrency, getResultSetType, getXAExceptionContents, hasLostUpdateOrDeadLockOccurred, isBatchUpdateSupportedWithAccessIntent, isConnectionError, mapException, mapException, modifyXAFlag, processGenericCredentials |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public DataDirectDataStoreHelper(java.util.Properties props)
props
- not used here, entry will be ignoredMethod Detail |
protected boolean isDataDirectExp(java.sql.SQLException e)
e
- SQLExceptionpublic final java.lang.Class findMappingClass(java.sql.SQLException e)
If a user wants to override the mapping of a specific Exception, they can override this method and either return the same exception class or return null. In the mapexception() which calls this method if the map found is null then the original exception is returned. A user can also cancel the mapping by returning null for that exception map.
findMappingClass
in class GenericDataStoreHelper
e
- The SQLException we need to find a mapping class forpublic final int getIsolationLevel(com.ibm.websphere.appprofile.accessintent.AccessIntent aIntent) throws javax.resource.ResourceException
AccessType: Optimistic --> map to RC; PessimisticRead --> map to RR
Pessimistic Update : Update Hint Value order is:
greedy | nocollision | Exclusive |
0/1 | 0/1 | 0/1 |
when adding up the combo as an integer, for example:
Note:
We don't allow pessimistic_update_random, therefore, this assumption
is made when calculation is done
getIsolationLevel
in class GenericDataStoreHelper
aIntent
- AccessIntentjavax.resource.ResourceException
- Intent
public void doConnectionSetup(java.sql.Connection conn) throws java.sql.SQLException
doConnectionSetup
in class GenericDataStoreHelper
conn
- java.sql.SQLException
- public final void setUserDefinedMap(java.util.Map newmap)
setUserDefinedMap
in class GenericDataStoreHelper
newmap
- a list of SQL error codes / states and the Exception classpublic java.io.PrintWriter getPrintWriter()
getPrintWriter
in class GenericDataStoreHelper
public final java.lang.String showLockInfo(java.util.Properties props) throws java.lang.Exception
showLockInfo
in class GenericDataStoreHelper
props
- Props should have the following data to establish a connection with MSSQLServer:java.lang.Exception
- Could range from java.io exceptions to javax.sql exceptions since we are running
operations against the OS.
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