org.castor.cpa.persistence.sql.driver
Class BaseFactory

java.lang.Object
  extended by org.castor.cpa.persistence.sql.driver.BaseFactory
All Implemented Interfaces:
PersistenceFactory
Direct Known Subclasses:
GenericFactory

public abstract class BaseFactory
extends java.lang.Object
implements PersistenceFactory

PersistenceFactory for generic JDBC driver.

Version:
$Revision: 8994 $ $Date: 2011-08-02 01:40:59 +0200 (Di, 02 Aug 2011) $
Author:
Assaf Arkin, Bruce Snyder

Constructor Summary
BaseFactory()
           
 
Method Summary
 java.lang.Class<?> adjustSqlType(java.lang.Class<?> sqlType)
          Some databases has some problems with some SQL types.
 PersistenceQuery getCallQuery(java.lang.String call, java.lang.Class<?>[] paramTypes, java.lang.Class<?> javaClass, java.lang.String[] fields, int[] sqlTypes)
          Needed to process OQL queries of "CALL" type (using stored procedure call).
 KeyGenerator getKeyGenerator(ClassDescriptor clsDesc)
          Returns a key generator as specified in the given class descriptor.
 Persistence getPersistence(ClassDescriptor clsDesc)
          Returns a persistence implementation for the specified object type (given its descriptor) on behalf of the specified cache engine.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.exolab.castor.persist.spi.PersistenceFactory
createQueryVisitor, getFactoryName, getIdentitySelectString, getQueryExpression, getSequenceAfterSelectString, getSequenceBeforeSelectString, isKeyGeneratorIdentitySupported, isKeyGeneratorIdentityTypeSupported, isKeyGeneratorSequenceSupported, isKeyGeneratorSequenceTypeSupported, quoteName
 

Constructor Detail

BaseFactory

public BaseFactory()
Method Detail

getKeyGenerator

public KeyGenerator getKeyGenerator(ClassDescriptor clsDesc)
                             throws MappingException
Returns a key generator as specified in the given class descriptor.

Specified by:
getKeyGenerator in interface PersistenceFactory
Parameters:
clsDesc - The class descriptor.
Returns:
A suitable key generator or null.
Throws:
MappingException - If creation of key generator fails.

getPersistence

public Persistence getPersistence(ClassDescriptor clsDesc)
Returns a persistence implementation for the specified object type (given its descriptor) on behalf of the specified cache engine. Return null if no persistence support is available for the specified object type.

Specified by:
getPersistence in interface PersistenceFactory
Parameters:
clsDesc - The class descriptor.
Returns:
A suitable persistence implementation or null.

getCallQuery

public PersistenceQuery getCallQuery(java.lang.String call,
                                     java.lang.Class<?>[] paramTypes,
                                     java.lang.Class<?> javaClass,
                                     java.lang.String[] fields,
                                     int[] sqlTypes)
Needed to process OQL queries of "CALL" type (using stored procedure call). This feature is specific for JDO.

Specified by:
getCallQuery in interface PersistenceFactory
Parameters:
call - Stored procedure call (without "{call")
paramTypes - The types of the query parameters
javaClass - The Java class of the query results
fields - The field names
sqlTypes - The field SQL types
Returns:
null if this feature is not supported.

adjustSqlType

public java.lang.Class<?> adjustSqlType(java.lang.Class<?> sqlType)
Some databases has some problems with some SQL types. Usually it is enough to merely replace one SQL type by another.

Specified by:
adjustSqlType in interface PersistenceFactory
Parameters:
sqlType - The correspondent Java class for the SQL type in mapping.xml
Returns:
The correspondent Java class for the SQL type that should be used instead.


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