org.apache.cayenne.dba.postgres

Class PostgresPkGenerator

java.lang.Object

org.apache.cayenne.dba.JdbcPkGenerator

org.apache.cayenne.dba.oracle.OraclePkGenerator

org.apache.cayenne.dba.postgres.PostgresPkGenerator

All Implemented Interfaces:

PkGenerator

public class PostgresPkGenerator
extends OraclePkGenerator

Default PK generator for PostgreSQL that uses sequences for PK generation.

Field Summary

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

adapter, DEFAULT_PK_CACHE_SIZE, pkCache, pkCacheSize, pkStartValue

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	PostgresPkGenerator(JdbcAdapter adapter)

Method Summary

Methods

Modifier and Type	Method and Description
protected String	createSequenceString(DbEntity ent)
protected List<String>	getExistingSequences(DataNode node) Fetches a list of existing sequences that might match Cayenne generated ones.
protected long	longPkFromDatabase(DataNode node, DbEntity entity) Generates primary key by calling Oracle sequence corresponding to the dbEntity.

Methods inherited from class org.apache.cayenne.dba.oracle.OraclePkGenerator

createAutoPk, createAutoPkStatements, dropAutoPk, dropAutoPkStatements, dropSequenceString, pkCacheSize, sequenceName, stripSchemaName

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

Constructor Detail

PostgresPkGenerator

protected PostgresPkGenerator(JdbcAdapter adapter)

Method Detail

createSequenceString

protected String createSequenceString(DbEntity ent)

Overrides:

createSequenceString in class OraclePkGenerator

longPkFromDatabase

protected long longPkFromDatabase(DataNode node,
                      DbEntity entity)
                           throws Exception

Description copied from class: OraclePkGenerator

Generates primary key by calling Oracle sequence corresponding to the dbEntity. Executed SQL looks like this:

   SELECT pk_table_name.nextval FROM DUAL
 

Overrides:

longPkFromDatabase in class OraclePkGenerator

Throws:

Exception

Since:

3.0

getExistingSequences

protected List<String> getExistingSequences(DataNode node)
                                     throws SQLException

Fetches a list of existing sequences that might match Cayenne generated ones.

Overrides:

getExistingSequences in class OraclePkGenerator

Throws:

SQLException