Package org.apache.cayenne.dba.derby

Class DerbyPkGenerator

java.lang.Object

org.apache.cayenne.dba.JdbcPkGenerator

org.apache.cayenne.dba.SequencePkGenerator

org.apache.cayenne.dba.derby.DerbyPkGenerator

All Implemented Interfaces:

PkGenerator

public class DerbyPkGenerator
extends SequencePkGenerator

PK generator for Derby that uses sequences.

Since:

4.0 (old one used AUTO_PK_SUPPORT table)

Field Summary

Fields inherited from class org.apache.cayenne.dba.JdbcPkGenerator

adapter, DEFAULT_PK_CACHE_SIZE, pkCache, pkCacheSize, pkStartValue

Constructor Summary

Constructors

Constructor	Description
DerbyPkGenerator(JdbcAdapter adapter)

Method Summary

Modifier and Type	Method	Description
protected String	createSequenceString(DbEntity entity)
protected String	dropSequenceString(DbEntity entity)	Returns a SQL string needed to drop any database objects associated with automatic primary key generation process for a specific DbEntity.
protected String	selectAllSequencesQuery()	Returns a database-specific query that lists the names of all existing sequences.
protected String	selectNextValQuery(String pkGeneratingSequenceName)	Returns a database-specific query to fetch the next value of the named sequence.
protected String	sequenceName(DbEntity entity)

Methods inherited from class org.apache.cayenne.dba.SequencePkGenerator

createAutoPk, createAutoPkStatements, dropAutoPk, dropAutoPkStatements, getExistingSequences, getSequencePrefix, longPkFromDatabase, pkCacheSize

Methods inherited from class org.apache.cayenne.dba.JdbcPkGenerator

autoPkTableExists, dropAutoPkString, generatePk, getAdapter, getPkCacheSize, pkCreateString, pkDeleteString, pkSelectString, pkTableCreateString, pkUpdateString, reset, runUpdate, setPkCacheSize

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cayenne.dba.PkGenerator

generatePk

Constructor Details

DerbyPkGenerator

public DerbyPkGenerator(JdbcAdapter adapter)

Method Details

sequenceName

protected String sequenceName(DbEntity entity)

Overrides:

sequenceName in class SequencePkGenerator

selectNextValQuery

protected String selectNextValQuery(String pkGeneratingSequenceName)

Description copied from class: SequencePkGenerator

Returns a database-specific query to fetch the next value of the named sequence.

Specified by:

selectNextValQuery in class SequencePkGenerator

selectAllSequencesQuery

protected String selectAllSequencesQuery()

Description copied from class: SequencePkGenerator

Returns a database-specific query that lists the names of all existing sequences.

Specified by:

selectAllSequencesQuery in class SequencePkGenerator

dropSequenceString

protected String dropSequenceString(DbEntity entity)

Description copied from class: SequencePkGenerator

Returns a SQL string needed to drop any database objects associated with automatic primary key generation process for a specific DbEntity.

Overrides:

dropSequenceString in class SequencePkGenerator

createSequenceString

protected String createSequenceString(DbEntity entity)

Overrides:

createSequenceString in class SequencePkGenerator