com.solarmetric.kodo.impl.jdbc.schema
Class ClassSequenceFactory

java.lang.Object
  |
  +--com.solarmetric.kodo.impl.jdbc.schema.ClassSequenceFactory

All Implemented Interfaces:

SequenceFactory, Serializable

public class ClassSequenceFactory

extends Object

implements SequenceFactory

SequenceFactory implementation that uses a sequence per class to generate numbers. It checks for the extension "sequence" under class-leve metadata. Note that much of the code here is duplicated across TrueSequenceFactory. The code is separated for clarity to plug-in developers. Designed as an example for subclassing / re-implementation. Only tested on Oracle. Other databases may require subclassing or re-implementation using this class as a basis.

See Also:

SequenceFactory, DBDictionaryFactory, Serialized Form

Field Summary

static String

SEQUENCE_EXT

Constructor Summary

ClassSequenceFactory()

Method Summary

String	getFormat() Return the MessageFormat String to use as for SQL generation
long	getNext(Class cls, Connector connector) Get the next sequence from the proper table defined in the metadata.
String	getTableName() Return the table name to run sequence queries against.
void	setConfiguration(JDBCConfiguration conf, DBDictionary dict) Set the configuration for this factory; allows access to database connection information, etc.
void	setFormat(String messageFormat) Set the String used for MessageFormat to generate the sequence selecting SQL.
void	setTableName(String name) Set the table name to run sequence queries against.

Methods inherited from class java.lang.Object

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

Field Detail

SEQUENCE_EXT

public static final String SEQUENCE_EXT

Constructor Detail

ClassSequenceFactory

public ClassSequenceFactory()

Method Detail

getTableName

public String getTableName()

Return the table name to run sequence queries against.

setTableName

public void setTableName(String name)

Set the table name to run sequence queries against. Defaults to DUAL.

Parameters:

name - the name of the table

getFormat

public String getFormat()

Return the MessageFormat String to use as for SQL generation

setFormat

public void setFormat(String messageFormat)

Set the String used for MessageFormat to generate the sequence selecting SQL. Should have two placeholders, 0 for the sequence name and 1 for the table name (e.g. dual) Also, it converts $ to spaces to help with auto configuration Defaults to "select {0}.NEXTVAL from {1}"

setConfiguration

public void setConfiguration(JDBCConfiguration conf,
                             DBDictionary dict)

Description copied from interface: SequenceFactory

Set the configuration for this factory; allows access to database connection information, etc.

Specified by:

setConfiguration in interface SequenceFactory

getNext

public long getNext(Class cls,
                    Connector connector)
             throws SQLException

Get the next sequence from the proper table defined in the metadata.

Specified by:

getNext in interface SequenceFactory