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
ConnectJDBCDataStoreHelperis aDataStoreHelperimplementation customized for the Progress DataDirect Connect for JDBC driver.SQLExceptionmappings specific to theConnectJDBCDataStoreHelperare the following:
If you have additional requirements on the Connect JDBC driver you should consider subclassing this implementation.Error Code SQL State PortableSQLExceptionsubclass230 StaleConnectionException.class2627 DuplicateKeyException.class2217 StaleConnectionException.class2251 StaleConnectionException.class2306 StaleConnectionException.class2310 StaleConnectionException.class2311 StaleConnectionException.class08000 StaleConnectionException.class08002 StaleConnectionException.class08004 StaleConnectionException.class08007 StaleConnectionException.class40003 Void.classS1000 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)ThisConnectJDBCDataStoreHelperconstructor creates a newConnectJDBCDataStoreHelperbased on theDataStoreHelperproperties provided.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description booleandoConnectionCleanup(java.sql.Connection conn)This method is used to clean up a connection before it is returned to the connection pool for later reuse.voiddoStatementCleanup(java.sql.PreparedStatement stmt)This method cleans up a statement before the statement is returned to the statement cache.intgetIsolationLevel(AccessIntent intent)This method determines the transaction isolation level to use as default.booleanisDuplicateKey(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.StringshowLockInfo(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)
ThisConnectJDBCDataStoreHelperconstructor creates a newConnectJDBCDataStoreHelperbased on theDataStoreHelperproperties 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-DataStoreHelperproperties.
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Method Detail
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doConnectionCleanup
public boolean doConnectionCleanup(java.sql.Connection conn) throws java.sql.SQLExceptionThis 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
DataStoreHelperis permitted to use the provided connection to create and execute statements for the purpose of cleaning up the connection. Any statements created within thedoConnectionCleanupmethod must be explicitly closed within thedoConnectionCleanupmethod. ThedoConnectionCleanupmethod 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.
ConnectJDBCDataStoreHelperresets the network timeout to 0.- Specified by:
doConnectionCleanupin interfaceDataStoreHelper- Overrides:
doConnectionCleanupin 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.SQLExceptionThis 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
ConnectJDBCDataStoreHelperresets all of the statement properties listed above except for thecursorNameproperty.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:
doStatementCleanupin interfaceDataStoreHelper- Overrides:
doStatementCleanupin 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 forConnectJDBCDataStoreHelperisConnection.TRANSACTION_REPEATABLE_READ.- Specified by:
getIsolationLevelin interfaceDataStoreHelper- Overrides:
getIsolationLevelin 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:
isDuplicateKeyin interfaceDataStoreHelper- Overrides:
isDuplicateKeyin 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.ExceptionThis method returns lock information for Microsoft SQL Server. The
propsparameter 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:
showLockInfoin 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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