Class ConnectJDBCDataStoreHelper
- java.lang.Object
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- com.ibm.websphere.rsadapter.GenericDataStoreHelper
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- com.ibm.websphere.rsadapter.DataDirectDataStoreHelper
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- com.ibm.websphere.rsadapter.ConnectJDBCDataStoreHelper
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- All Implemented Interfaces:
DataStoreHelper
public class ConnectJDBCDataStoreHelper extends DataDirectDataStoreHelper
ConnectJDBCDataStoreHelper
is aDataStoreHelper
implementation customized for the Progress DataDirect Connect for JDBC driver.SQLException
mappings specific to theConnectJDBCDataStoreHelper
are the following:Error Code SQL State PortableSQLException
subclass230 StaleConnectionException.class
2627 DuplicateKeyException.class
2217 StaleConnectionException.class
2251 StaleConnectionException.class
2306 StaleConnectionException.class
2310 StaleConnectionException.class
2311 StaleConnectionException.class
08000 StaleConnectionException.class
08002 StaleConnectionException.class
08004 StaleConnectionException.class
08007 StaleConnectionException.class
40003 Void.class
S1000 Void.class
Note: This class and its methods can not be called or referenced directly by user applications.
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Field Summary
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Fields inherited from interface com.ibm.websphere.rsadapter.DataStoreHelper
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, 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
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Constructor Summary
Constructors Constructor Description ConnectJDBCDataStoreHelper(java.util.Properties props)
ThisConnectJDBCDataStoreHelper
constructor creates a newConnectJDBCDataStoreHelper
based on theDataStoreHelper
properties provided.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
doConnectionCleanup(java.sql.Connection conn)
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)
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 to use as default.boolean
isDuplicateKey(java.sql.SQLException sqlX)
The application server invokes this method to determine whether or not the specified error indicates a duplicate key violation.java.lang.String
showLockInfo(java.util.Properties props)
This method returns lock information for Microsoft SQL Server.-
Methods inherited from class com.ibm.websphere.rsadapter.DataDirectDataStoreHelper
doConnectionSetup, findMappingClass, getPrintWriter, setUserDefinedMap
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Methods inherited from class com.ibm.websphere.rsadapter.GenericDataStoreHelper
calcPartitionNumber, doConnectionCleanupPerCloseConnection, doConnectionCleanupWithValidCheck, doConnectionSetupPerGetConnection, doConnectionSetupPerTransaction, getLockType, getMetaData, getPasswordForUseWithTrustedContextWithAuthentication, getResultSetConcurrency, getResultSetType, getXAExceptionContents, hasLostUpdateOrDeadLockOccurred, isBatchUpdateSupportedWithAccessIntent, isConnectionError, isTransientConnectionError, isUnsupported, mapException, modifyXAFlag, setConfig
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Constructor Detail
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ConnectJDBCDataStoreHelper
public ConnectJDBCDataStoreHelper(java.util.Properties props)
ThisConnectJDBCDataStoreHelper
constructor creates a newConnectJDBCDataStoreHelper
based on theDataStoreHelper
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.- Parameters:
props
-DataStoreHelper
properties.
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Method Detail
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doConnectionCleanup
public boolean doConnectionCleanup(java.sql.Connection conn) throws java.sql.SQLException
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 thedoConnectionCleanup
method must be explicitly closed within thedoConnectionCleanup
method. ThedoConnectionCleanup
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 Liberty that at least one standard connection property was modified. A value of false is returned only if no standard connection properties were modified.
ConnectJDBCDataStoreHelper
resets the network timeout to 0.- Specified by:
doConnectionCleanup
in interfaceDataStoreHelper
- Overrides:
doConnectionCleanup
in classGenericDataStoreHelper
- Parameters:
conn
- the connection to attempt to clean up.- Returns:
- true if any standard connection property was modified, otherwise false.
- Throws:
java.sql.SQLException
- If an error occurs while cleaning up the connection.
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doStatementCleanup
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,
- cursorName
- fetchDirection
- longDataCacheSize
- maxFieldSize
- maxRows
- queryTimeout
ConnectJDBCDataStoreHelper
resets all of the statement properties listed above except for thecursorName
property.The following operations do not need to be included in the statement cleanup because they are automatically performed by Liberty 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.
- Specified by:
doStatementCleanup
in interfaceDataStoreHelper
- Overrides:
doStatementCleanup
in classGenericDataStoreHelper
- Parameters:
stmt
- the PreparedStatement.- Throws:
java.sql.SQLException
- if an error occurs cleaning up the statement.
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getIsolationLevel
public int getIsolationLevel(AccessIntent intent) throws javax.resource.ResourceException
This method determines the transaction isolation level to use as default. The default transaction isolation level forConnectJDBCDataStoreHelper
isConnection.TRANSACTION_REPEATABLE_READ.
- Specified by:
getIsolationLevel
in interfaceDataStoreHelper
- Overrides:
getIsolationLevel
in classDataDirectDataStoreHelper
- Parameters:
intent
- always null in Liberty.- Returns:
- A transaction isolation level.
- Throws:
javax.resource.ResourceException
- If a transaction isolation level cannot be determined.
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isDuplicateKey
public boolean isDuplicateKey(java.sql.SQLException sqlX)
The application server invokes this method to determine whether or not the specified error indicates a duplicate key violation.
- Specified by:
isDuplicateKey
in interfaceDataStoreHelper
- Overrides:
isDuplicateKey
in classGenericDataStoreHelper
- Parameters:
sqlX
- the error.- Returns:
- true if the error indicates a duplicate key violation, otherwise false.
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showLockInfo
public 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:- user - user name that has a DBA authority. If not specified, a default value of "sa" is used.
- password - the password corresponding to the user name. If not specified, a default value of "" (empty string) is used.
- serverName - the server name where the Microsoft SQL Server database resides.
- portNumber - the port where Microsoft SQL Server is listening.
- Overrides:
showLockInfo
in classDataDirectDataStoreHelper
- Parameters:
props
- properties containing information needed to connect to the database.- Returns:
- the lock information.
- Throws:
java.lang.Exception
- if an error occurs while collecting the lock information.
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