org.exolab.castor.jdo.drivers
Class InstantDBFactory

java.lang.Object
  extended by org.exolab.castor.jdo.engine.BaseFactory
      extended by org.exolab.castor.jdo.drivers.GenericFactory
          extended by org.exolab.castor.jdo.drivers.InstantDBFactory
All Implemented Interfaces:
PersistenceFactory

public class InstantDBFactory
extends GenericFactory

Persistence factory for InstantDB database (http://instantdb.enhydra.org/ ).

Example database.xml file for JDO

   <database name="test" engine="instantdb" >
       <driver class-name="org.enhydra.instantdb.jdbc.idbDriver" 
               url="jdbc:idb:C:\\castor-0.8.8\\db\\test\\test.prp">
         <param name="user" value="" />
         <param name="password" value="" />
       </driver>
       <mapping href="mapping.xml" />
    </database>
  

Version:
1.0
Author:
I. Burak Ozyurt

Constructor Summary
InstantDBFactory()
           
 
Method Summary
 java.lang.Class adjustSqlType(java.lang.Class sqlType)
          For NUMERIC type ResultSet.getObject() returns Double instead of BigDecimal for InstantDB.
 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).
 java.lang.String getFactoryName()
          Returns the name of this factory.
 QueryExpression getQueryExpression()
          Returns a new empty query expression suitable for the underlying SQL engine.
 java.lang.Boolean isDuplicateKeyException(java.lang.Exception except)
          Determine if the given SQLException is DuplicateKeyException
 
Methods inherited from class org.exolab.castor.jdo.drivers.GenericFactory
doubleQuoteName, quoteName
 
Methods inherited from class org.exolab.castor.jdo.engine.BaseFactory
getPersistence, supportsSetNullInWhere
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

InstantDBFactory

public InstantDBFactory()
Method Detail

getFactoryName

public java.lang.String getFactoryName()
Description copied from interface: PersistenceFactory
Returns the name of this factory. A descriptive name that indicates the type of supported database server or SQL syntax.

Specified by:
getFactoryName in interface PersistenceFactory
Overrides:
getFactoryName in class GenericFactory
Returns:
The name of this factory

getQueryExpression

public QueryExpression getQueryExpression()
Description copied from interface: PersistenceFactory
Returns a new empty query expression suitable for the underlying SQL engine. The implementation will construct SQL query statements in the preferred syntax.

Specified by:
getQueryExpression in interface PersistenceFactory
Overrides:
getQueryExpression in class GenericFactory
Returns:
New empty query expression

isDuplicateKeyException

public java.lang.Boolean isDuplicateKeyException(java.lang.Exception except)
Description copied from class: GenericFactory
Determine if the given SQLException is DuplicateKeyException

Specified by:
isDuplicateKeyException in interface PersistenceFactory
Overrides:
isDuplicateKeyException in class GenericFactory
Returns:
Boolean.TRUE means "yes", Boolean.FALSE means "no", null means "cannot determine"

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.

Overrides:
getCallQuery in class BaseFactory
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)
For NUMERIC type ResultSet.getObject() returns Double instead of BigDecimal for InstantDB.

Overrides:
adjustSqlType in class BaseFactory
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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