com.edorasware.commons.core.persistence.jdbc

Class JdbcSequentialPrimaryKeyPersistence

java.lang.Object

com.edorasware.commons.core.persistence.jdbc.JdbcSequentialPrimaryKeyPersistence

All Implemented Interfaces:

SequentialPrimaryKeyPersistence

public class JdbcSequentialPrimaryKeyPersistence
extends Object
implements SequentialPrimaryKeyPersistence

Primary key persistence that uses the Spring JDBC Template. <p> See http://forum.springsource.org/showthread.php?16594-PROPAGATION_NESTED-versus-PROPAGATION_REQUIRES_NEW.

Constructor Summary

Constructors

Constructor and Description
JdbcSequentialPrimaryKeyPersistence(org.springframework.transaction.PlatformTransactionManager transactionManager, DataSource dataSource, DatabaseType databaseType, DatabaseMetadata databaseMetadata, String sqlMappingFile) Creates a new JdbcSequentialPrimaryKeyPersistence instance.

Method Summary

Modifier and Type	Method and Description
PrimaryKeyRange	getAvailablePrimaryKeys(int blockSize) Generates a block of unique primary keys.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JdbcSequentialPrimaryKeyPersistence

public JdbcSequentialPrimaryKeyPersistence(org.springframework.transaction.PlatformTransactionManager transactionManager,
                                           DataSource dataSource,
                                           DatabaseType databaseType,
                                           DatabaseMetadata databaseMetadata,
                                           String sqlMappingFile)
                                    throws Exception

Creates a new JdbcSequentialPrimaryKeyPersistence instance.

Parameters:

transactionManager - the transaction manager to apply

dataSource - the data source to apply

databaseType - the database type to apply when choosing the proper sql statements

databaseMetadata - the database meta data

sqlMappingFile - the path to the primary key sql mapping file

Throws:

Exception - thrown if something goes wrong during loading of the sql mapping resources

Method Detail

getAvailablePrimaryKeys

public PrimaryKeyRange getAvailablePrimaryKeys(int blockSize)

Generates a block of unique primary keys. Each range of returned primary keys must be higher than the range returned for the previous call.

Specified by:

getAvailablePrimaryKeys in interface SequentialPrimaryKeyPersistence

Parameters:

blockSize - the number of primary keys to fetch

Returns:

the range of primary keys