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java.lang.Object | +--com.ibm.websphere.rsadapter.GenericDataStoreHelper | +--com.ibm.websphere.rsadapter.InformixDataStoreHelper
This is a helper class customized for the Informix database. It allows us to plug in data store specific functions. When trying to map an exception, the Informix errormap will be searched first then the generic one will be searched.
If you have any special Informix 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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InformixDataStoreHelper(java.util.Properties props)
Constructor expects an Integer parseable entry in the properties object with key = "informixLockModeWait". |
Method Summary | |
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boolean |
doConnectionCleanup(java.sql.Connection conn)
This method will do clean up on the connection which consists of calling the scrubConnection() method provided by Informix. |
void |
doConnectionSetup(java.sql.Connection conn)
This method allows the DataStoreHelper to set any connection properties that are not specified in the default configuration. |
void |
doStatementCleanup(java.sql.PreparedStatement stmt)
Clean up a statement before it is placed in the cache. |
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 return a java.io.PrintWriter instance to be passed on to setLogWriter method called on the datasource, during the managedConnectionFactory initialization. |
int |
getResultSetConcurrency(com.ibm.websphere.appprofile.accessintent.AccessIntent intent)
This method returns the resultSet concurrency given the Intent Object. |
void |
setUserDefinedMap(java.util.Map newmap)
This method is used to add user defined error maps. |
Methods inherited from class com.ibm.websphere.rsadapter.GenericDataStoreHelper |
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calcPartitionNumber, getLockType, getMetaData, getResultSetType, getXAExceptionContents, hasLostUpdateOrDeadLockOccurred, isBatchUpdateSupportedWithAccessIntent, isConnectionError, mapException, mapException, modifyXAFlag, processGenericCredentials, showLockInfo |
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 InformixDataStoreHelper(java.util.Properties props)
props
- The properies object with a key = "informixLockModeWait"Method Detail |
public 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
PessimisticUpdate: 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 int getResultSetConcurrency(com.ibm.websphere.appprofile.accessintent.AccessIntent intent) throws javax.resource.ResourceException
getResultSetConcurrency
in class GenericDataStoreHelper
intent
- AccessIntentjavax.resource.ResourceException
- AccessIntent
public void doConnectionSetup(java.sql.Connection conn) throws java.sql.SQLException
doConnectionSetup
in class GenericDataStoreHelper
conn
- The connection object on which the property is to be set.java.sql.SQLException
- public void doStatementCleanup(java.sql.PreparedStatement stmt) throws java.sql.SQLException
doStatementCleanup
in class GenericDataStoreHelper
stmt
- the PreparedStatement.java.sql.SQLException
- if an error occurs cleaning up the statement.public boolean doConnectionCleanup(java.sql.Connection conn) throws java.sql.SQLException
Note:
The cleanup will only be done if the operation does not release the
prepared statements, otherwise the PS cache would be lost.
doConnectionCleanup
in class GenericDataStoreHelper
conn
- java.sql.Connectionjava.sql.SQLException
- public final void setUserDefinedMap(java.util.Map newmap)
setUserDefinedMap
in class GenericDataStoreHelper
newmap
- Map - a list of SQL error codes / states and the Exception classpublic java.io.PrintWriter getPrintWriter()
getPrintWriter
in class GenericDataStoreHelper
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