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IBM WebSphere Application ServerTM Release 7 |
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java.lang.Objectcom.ibm.websphere.rsadapter.GenericDataStoreHelper
com.ibm.websphere.rsadapter.OracleDataStoreHelper
@Deprecated public class OracleDataStoreHelper
OracleDataStoreHelper
is a DataStoreHelper
implementation
customized for the Oracle database.
When mapping a SQLException
, the SQLException
mappings from the
OracleDataStoreHelper
are searched first, and subsequently, if no match is
found, the SQLException
mappings from the GenericDataStoreHelper
are searched.
If you have additional requirements on Oracle you should consider subclassing this
implementation.
Note: This class and its methods can not be called or referenced directly by user applications.
SQLException
mappings specific to the OracleDataStoreHelper
are the following:
Error Code | SQL State | PortableSQLException subclass |
---|---|---|
1 | DuplicateKeyException.class | |
20 | StaleConnectionException.class | |
28 | StaleConnectionException.class | |
1012 | StaleConnectionException.class | |
1014 | StaleConnectionException.class | |
1033 | StaleConnectionException.class | |
1034 | StaleConnectionException.class | |
1035 | StaleConnectionException.class | |
1089 | StaleConnectionException.class | |
1090 | StaleConnectionException.class | |
1092 | StaleConnectionException.class | |
3113 | StaleConnectionException.class | |
3114 | StaleConnectionException.class | |
12505 | StaleConnectionException.class | |
12541 | StaleConnectionException.class | |
12560 | StaleConnectionException.class | |
12571 | StaleConnectionException.class | |
17002 | StaleConnectionException.class | |
17008 | StaleConnectionException.class | |
17009 | StaleConnectionException.class | |
17410 | StaleConnectionException.class | |
17401 | StaleConnectionException.class | |
17430 | StaleConnectionException.class | |
25408 | StaleConnectionException.class | |
24794 | StaleConnectionException.class | |
17447 | StaleConnectionException.class |
Field Summary |
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Fields inherited from class com.ibm.websphere.rsadapter.GenericDataStoreHelper |
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customDefinedWasDefaultIsoLevel, EOLN, genErrorMap, resBundle |
Constructor Summary | |
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OracleDataStoreHelper(java.util.Properties props)
Deprecated. This OracleDataStoreHelper constructor creates a new
OracleDataStoreHelper based on the DataStoreHelper
properties provided. |
Method Summary | |
---|---|
boolean |
doConnectionCleanup(java.sql.Connection conn)
Deprecated. This method is used to clean up a connection before it is returned to the connection pool for later reuse. |
void |
doStatementCleanup(java.sql.PreparedStatement stmt)
Deprecated. This method cleans up a statement before the statement is returned to the statement cache. |
java.lang.Class |
findMappingClass(java.sql.SQLException e)
Deprecated. This method locates the com.ibm.websphere.ce.cm.PortableSQLException
subclass corresponding to the specified SQLException , as defined by the
OracleDataStoreHelper , GenericDataStoreHelper , and
user-defined SQLException maps. |
int |
getIsolationLevel(AccessIntent intent)
Deprecated. This method determines the transaction isolation level based on the specified AccessIntent . |
int |
getLockType(AccessIntent intent)
Deprecated. This method returns a lock type constant based on the update hint value of the specified AccessIntent. |
int |
getResultSetConcurrency(AccessIntent intent)
Deprecated. This method determines the result set concurrency based on the specified AccessIntent . |
java.lang.String |
getXAExceptionContents(javax.transaction.xa.XAException xae)
Deprecated. This method provides a plug-in point for providing meaningful logging information for an XAException . |
java.lang.String |
hasLostUpdateOrDeadLockOccurred(int isoLevel,
boolean loadedForUpdate)
Deprecated. This method is invoked when storing a CMP EntityBean if pessimistic concurrency control is activated. |
boolean |
isBatchUpdateSupportedWithAccessIntent(AccessIntent accessIntent)
Deprecated. This method is used to determine if CMP Entity Beans can support batch updates with the given AccessIntent. |
int |
modifyXAFlag(int xaflag)
Deprecated. This method is used only when the transactionBranchesLooselyCoupled
custom DataSource property is set to true. |
java.lang.String |
showLockInfo(java.util.Properties props)
Deprecated. This method returns lock information for Oracle. |
Methods inherited from class com.ibm.websphere.rsadapter.GenericDataStoreHelper |
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calcPartitionNumber, doConnectionCleanupPerCloseConnection, doConnectionSetup, doConnectionSetupPerGetConnection, doConnectionSetupPerTransaction, getMetaData, getPasswordForUseWithTrustedContextWithAuthentication, getPrintWriter, getResultSetType, isConnectionError, isDuplicateKey, mapException, setUserDefinedMap |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public OracleDataStoreHelper(java.util.Properties props)
This OracleDataStoreHelper
constructor creates a new
OracleDataStoreHelper
based on the DataStoreHelper
properties provided.
The DataStoreHelper
properties for OracleDataStoreHelper
include a property, dataSourceClass
, set to the Oracle JDBC driver's
DataSource
implementation class name.
props
- DataStoreHelper
properties.Method Detail |
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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,
OracleDataStoreHelper
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.
doStatementCleanup
in interface DataStoreHelper
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
GenericDataStoreHelper
This method is used to clean up a connection before it is returned to the connection
pool for later reuse. WebSphere automatically resets all standard connection
properties (fields for which getters and setters are defined on
java.sql.Connection
).
This method may be used to reset other properties proprietary to a specific
JDBC driver/database and do whatever else is necessary to prepare the connection for
reuse.
A DataStoreHelper
is permitted to use the provided connection to create
and execute statements for the purpose of cleaning up the connection. Any statements
created within the doConnectionCleanup
method must be explicitly closed
within the doConnectionCleanup
method. The
doConnectionCleanup
method must never close the
connection being cleaned up.
If any standard connection properties are modified in this method, a value of true must be returned, indicating to WebSphere that at least one standard connection property was modified. A value of false is returned only if no standard connection properties were modified.
GenericDataStoreHelper
does not perform any connection cleanup.
doConnectionCleanup
in interface DataStoreHelper
doConnectionCleanup
in class GenericDataStoreHelper
conn
- the connection to attempt to cleanup.
java.sql.SQLException
- If an error occurs while cleaning up the connection.Connection
public final java.lang.Class findMappingClass(java.sql.SQLException e)
This method locates the com.ibm.websphere.ce.cm.PortableSQLException
subclass corresponding to the specified SQLException
, as defined by the
OracleDataStoreHelper
, GenericDataStoreHelper
, and
user-defined SQLException
maps. Precedence and related details of
SQLException
mapping are described on the
DataStoreHelper.setUserDefinedMap
method.
Overriding this method is one of three options you have for modifying
SQLException
mapping. The other two options are overriding the
mapException
method and invoking the setUserDefinedMap
method to add a user-defined SQLException
map.
findMappingClass
in class GenericDataStoreHelper
e
- The SQLException
for which to locate a
com.ibm.websphere.ce.cm.PortableSQLException
subclass.
com.ibm.websphere.ce.cm.PortableSQLException
subclass matching
the SQLException
, or null if no match was found.SQLException
,
PortableSQLException
public int getIsolationLevel(AccessIntent intent) throws javax.resource.ResourceException
AccessIntent
.
If the AccessIntent
parameter is null, a default value is returned
that is appropriate for the database backend. The default transaction isolation level
for OracleDataStoreHelper
is
Connection.TRANSACTION_READ_COMMITTED.
In the case where an AccessIntent
is specified,
OracleDataStoreHelper
computes the transation isolation level
from the following table based on the pessimistic update lock hint.
pessimistic update lock hint | transaction isolation level |
---|---|
AccessIntent.PESSIMISTIC_UPDATE_LOCK_HINT_NONE AccessIntent.PESSIMISTIC_UPDATE_LOCK_HINT_WEAKEST_LOCK_AT_LOAD AccessIntent.PESSIMISTIC_UPDATE_LOCK_HINT_NOCOLLISION |
Connection.TRANSACTION_READ_COMMITTED |
AccessIntent.PESSIMISTIC_UPDATE_LOCK_HINT_EXCLUSIVE |
Connection.TRANSACTION_SERIALIZABLE |
getIsolationLevel
in interface DataStoreHelper
getIsolationLevel
in class GenericDataStoreHelper
intent
- An AccessIntent
AccessIntent
.
javax.resource.ResourceException
- If a transaction isolation level cannot be determined
from the AccessIntent
.AccessIntent
,
Connection
public int getResultSetConcurrency(AccessIntent intent) throws javax.resource.ResourceException
AccessIntent
.
OracleDataStoreHelper
returns
java.sql.ResultSet.CONCUR_UPDATABLE
if the access type of the
AccessIntent
is AccessIntent.ACCESS_TYPE_UPDATE
, and
otherwise java.sql.ResultSet.CONCUR_READ_ONLY
.
Note, however, that for performance and technical reasons, this method will
always return java.sql.ResultSet.CONCUR_READ_ONLY
getResultSetConcurrency
in interface DataStoreHelper
getResultSetConcurrency
in class GenericDataStoreHelper
intent
- An AccessIntent
.
java.sql.ResultSet
.
javax.resource.ResourceException
- If a result set concurrency cannot be determined
from the AccessIntent
.AccessIntent
,
ResultSet
public java.lang.String hasLostUpdateOrDeadLockOccurred(int isoLevel, boolean loadedForUpdate)
pre-conditions
hasLostUpdateOrDeadLockOccurred
in interface DataStoreHelper
hasLostUpdateOrDeadLockOccurred
in class GenericDataStoreHelper
isoLevel
- the transaction isolation level used.loadedForUpdate
- true
if the CMP EntityBean
was loaded for update (eg. FOR UPDATE keywords used on SELECT),
otherwise false.
public final java.lang.String showLockInfo(java.util.Properties props) throws java.lang.Exception
props
parameter may include the following properties:
showLockInfo
in class GenericDataStoreHelper
props
- properties containing information needed to connect to the database.
java.lang.Exception
- if an error occurs while collecting the lock information.public int getLockType(AccessIntent intent)
This method returns a lock type constant based on the update hint value of the
specified AccessIntent.
The lock type is used by the persistence manager to determine which locking hints
are used on a SELECT
statement.
OracleDataStoreHelper
returns
WSInteractionSpec.LOCKTYPE_SELECT_FOR_UPDATE
if the
AccessIntent
is null or if all of the following are true:
AccessIntent.ACCESS_TYPE_UPDATE
.AccessIntent.CONCURRENCY_CONTROL_PESSIMISTIC
.AccessIntent.PESSIMISTIC_UPDATE_LOCK_HINT_NOCOLLISION
.
In all other cases, WSInteractionSpec.LOCKTYPE_SELECT
is returned.
getLockType
in interface DataStoreHelper
getLockType
in class GenericDataStoreHelper
intent
- An AccessIntent
com.ibm.websphere.rsadapter.WSInteractionSpec
:
LOCKTYPE_SELECT
LOCKTYPE_SELECT_FOR_UPDATE
AccessIntent
,
WSInteractionSpec
public java.lang.String getXAExceptionContents(javax.transaction.xa.XAException xae)
XAException
. The information can include details of the original
exception that caused the XAException
, if applicable.
WebSphere uses this method to obtain trace information for
XAException
s to include in WebSphere trace.
getXAExceptionContents
in interface DataStoreHelper
getXAExceptionContents
in class GenericDataStoreHelper
xae
- the XAException
.
XAException
, for inclusion in
a WebSphere trace.XAException
public int modifyXAFlag(int xaflag)
This method is used only when the transactionBranchesLooselyCoupled
custom DataSource property is set to true.
This method modifies the given XA start flag, adding the proprietary Oracle flag,
OracleXAResource.ORATRANSLOOSE
.
modifyXAFlag
in interface DataStoreHelper
modifyXAFlag
in class GenericDataStoreHelper
xaflag
- The XA start flag to modify.
XAResource
public boolean isBatchUpdateSupportedWithAccessIntent(AccessIntent accessIntent)
OracleDataStoreHelper
returns false if the concurrency control of the
AccessIntent
is AccessIntent.CONCURRENCY_CONTROL_OPTIMISTIC
,
and otherwise returns true.
isBatchUpdateSupportedWithAccessIntent
in interface DataStoreHelper
isBatchUpdateSupportedWithAccessIntent
in class GenericDataStoreHelper
accessIntent
- AccessIntent
AccessIntent
|
IBM WebSphere Application ServerTM Release 7 |
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