Class AbstractAfterKeyGenerator
java.lang.Object
org.castor.cpa.persistence.sql.keygen.AbstractKeyGenerator
org.castor.cpa.persistence.sql.keygen.AbstractAfterKeyGenerator
- All Implemented Interfaces:
KeyGenerator
- Direct Known Subclasses:
IdentityKeyGenerator
,SequenceAfterKeyGenerator
Abstract class that implements the KeyGenerator interface for AFTER_INSERT style. The key
generator is used for producing identities for objects before they are created in the
database.
- Version:
- $Revision$ $Date: 2009-07-13 17:22:43 (Tue, 28 Jul 2009) $
- Author:
- Ahmad Hassan, Ralf Joachim
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionbuildStatement
(SQLEngine engine) Builds the SQL insert statement.executeStatement
(Database database, CastorConnection conn, Identity identity, ProposedEntity entity) Executes the SQL statement after preparing the PreparedStatement.Methods inherited from class org.castor.cpa.persistence.sql.keygen.AbstractKeyGenerator
closeSeparateConnection, getSeparateConnection
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface org.castor.cpa.persistence.sql.keygen.KeyGenerator
generateKey, isInSameConnection
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Constructor Details
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AbstractAfterKeyGenerator
Constructor.- Parameters:
params
- Parameters for key generator.
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Method Details
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buildStatement
Builds the SQL insert statement.- Parameters:
engine
- SQL engine for all persistence operations at entities of the type this class is responsible for. Holds all required information of the entity type.- Returns:
- KeyGenerator
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executeStatement
public Object executeStatement(Database database, CastorConnection conn, Identity identity, ProposedEntity entity) throws PersistenceException Executes the SQL statement after preparing the PreparedStatement.- Parameters:
database
- A database instance.conn
- CastorConnection holding connection and PersistenceFactory to be used to create statement.identity
- Identity of the object to insert.entity
- Entity instance from which field values to be fetached to bind with sql insert statement.- Returns:
- Identity
- Throws:
PersistenceException
- If failed to insert record into database. This could happen if a database access error occurs, If identity size mismatches, unable to retrieve Identity, If provided Identity is null, If Extended engine is null.
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