public class DB2UniversalDataStoreHelper extends DB2DataStoreHelper
DB2UniversalDataStoreHelper is a DataStoreHelper implementation
customized for the DB2 Universal JDBC driver.
When mapping a SQLException, the SQLException mappings from the
DB2UniversalDataStoreHelper are searched first. If no match is found, the
SQLException mappings from the DB2DataStoreHelper
are searched. If still no match is found, the SQLException mappings from the
GenericDataStoreHelper are searched.
If you have additional requirements on DB2 you should consider subclassing this
implementation.
SQLException mappings specific to the DB2UniversalDataStoreHelper
are the following:
| Error Code | SQL State | PortableSQLException subclass |
|---|---|---|
| -4498 | StaleConnectionException.class | |
| -4499 | StaleConnectionException.class | |
| -1776 | StaleConnectionException.class |
db2TccustomDefinedWasDefaultIsoLevel, 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 |
|---|
DB2UniversalDataStoreHelper(java.util.Properties props)
This
DB2UniversalDataStoreHelper constructor creates a new
DB2UniversalDataStoreHelper 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 |
getDriverType()
This method returns the driverType which is defined for the DB2 Universal JDBC driver.
|
java.io.PrintWriter |
getPrintWriter()
This method is used to obtain the log writer to set on the
DataSource
when database logging is enabled (for example: WAS.database=all=enabled). |
boolean |
isBatchUpdateSupportedWithAccessIntent(AccessIntent accessIntent)
This method is used to determine if CMP Entity Beans can support batch updates with the
given AccessIntent.
|
doConnectionSetup, findMappingClass, getIsolationLevel, getLockType, getResultSetConcurrency, getXAExceptionContents, setUserDefinedMap, showLockInfocalcPartitionNumber, doConnectionCleanup, doConnectionCleanupPerCloseConnection, doConnectionCleanupWithValidCheck, doConnectionSetupPerGetConnection, doConnectionSetupPerTransaction, getMetaData, getPasswordForUseWithTrustedContextWithAuthentication, getResultSetType, hasLostUpdateOrDeadLockOccurred, isConnectionError, isDuplicateKey, isTransientConnectionError, mapException, modifyXAFlag, setConfigpublic DB2UniversalDataStoreHelper(java.util.Properties props)
DB2UniversalDataStoreHelper constructor creates a new
DB2UniversalDataStoreHelper 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 java.io.PrintWriter getPrintWriter()
DataSource
when database logging is enabled (for example: WAS.database=all=enabled).
By default, null is returned and a java.io.PrintWriter instance created
by WebSphere is used. You can override this method to return a different
java.io.PrintWriter instance instead of the default.getPrintWriter in interface DataStoreHelpergetPrintWriter in class DB2DataStoreHelperjava.io.PrintWriter.public boolean isBatchUpdateSupportedWithAccessIntent(AccessIntent accessIntent)
DB2UniversalDataStoreHelper returns a value of true, indicating batch
updates are always supported. If necessary, you may change this value by
overriding this method.
isBatchUpdateSupportedWithAccessIntent in interface DataStoreHelperisBatchUpdateSupportedWithAccessIntent in class DB2DataStoreHelperaccessIntent - AccessIntentAccessIntentpublic final int getDriverType()
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 being cached. It is called when at least one of the following statement properties has changed,
DB2DataStoreHelper resets all of the statement properties listed above
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 can choose to do additional cleanup for the statement. However, this must never include closing the statement, since the statement is intended to be cached.
doStatementCleanup in interface DataStoreHelperdoStatementCleanup in class DB2DataStoreHelperstmt - the PreparedStatement.java.sql.SQLException - if an error occurs cleaning up the statement.