org.apache.cayenne.dba.sqlserver

Class SQLServerPkGenerator

java.lang.Object

org.apache.cayenne.dba.JdbcPkGenerator

org.apache.cayenne.dba.oracle.OraclePkGenerator

org.apache.cayenne.dba.sqlserver.SQLServerPkGenerator

All Implemented Interfaces:

PkGenerator

public class SQLServerPkGenerator
extends OraclePkGenerator

The default PK generator for MS SQL, which uses sequences to generate a PK for an integer key type and NEWID() for UNIQUEIDENTIFIER key type

Since:

4.1

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
	SQLServerPkGenerator()
protected	SQLServerPkGenerator(JdbcAdapter adapter)

Method Summary

Modifier and Type	Method and Description
List<String>	createAutoPkStatements(List<DbEntity> dbEntities) Creates a list of CREATE SEQUENCE statements for the list of DbEntities.
protected String	createSequenceString(DbEntity ent)
List<String>	dropAutoPkStatements(List<DbEntity> dbEntities) Creates a list of DROP SEQUENCE statements for the list of DbEntities.
Object	generatePk(DataNode node, DbAttribute pk) Generates a unique and non-repeating primary key for specified dbEntity.
protected String	getSequencePrefix()
protected String	guidPkFromDatabase(DataNode node, DbEntity entity)
protected String	selectAllSequencesQuery()
protected String	selectNextValQuery(String sequenceName)
protected String	sequenceName(DbEntity entity) Returns expected primary key sequence name for a DbEntity.

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

createAutoPk, dropAutoPk, dropSequenceString, getExistingSequences, longPkFromDatabase, pkCacheSize

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

SQLServerPkGenerator

public SQLServerPkGenerator()

SQLServerPkGenerator

protected SQLServerPkGenerator(JdbcAdapter adapter)

Method Detail

createSequenceString

protected String createSequenceString(DbEntity ent)

Overrides:

createSequenceString in class OraclePkGenerator

getSequencePrefix

protected String getSequencePrefix()

Overrides:

getSequencePrefix in class OraclePkGenerator

selectNextValQuery

protected String selectNextValQuery(String sequenceName)

Overrides:

selectNextValQuery in class OraclePkGenerator

createAutoPkStatements

public List<String> createAutoPkStatements(List<DbEntity> dbEntities)

Description copied from class: OraclePkGenerator

Creates a list of CREATE SEQUENCE statements for the list of DbEntities.

Specified by:

createAutoPkStatements in interface PkGenerator

Overrides:

createAutoPkStatements in class OraclePkGenerator

dropAutoPkStatements

public List<String> dropAutoPkStatements(List<DbEntity> dbEntities)

Description copied from class: OraclePkGenerator

Creates a list of DROP SEQUENCE statements for the list of DbEntities.

Specified by:

dropAutoPkStatements in interface PkGenerator

Overrides:

dropAutoPkStatements in class OraclePkGenerator

generatePk

public Object generatePk(DataNode node,
                         DbAttribute pk)
                  throws Exception

Description copied from class: JdbcPkGenerator

Generates a unique and non-repeating primary key for specified dbEntity.

This implementation is naive since it does not lock the database rows when executing select and subsequent update. Adapter-specific implementations are more robust.

Specified by:

generatePk in interface PkGenerator

Overrides:

generatePk in class JdbcPkGenerator

Throws:

Exception

selectAllSequencesQuery

protected String selectAllSequencesQuery()

Overrides:

selectAllSequencesQuery in class OraclePkGenerator

sequenceName

protected String sequenceName(DbEntity entity)

Description copied from class: OraclePkGenerator

Returns expected primary key sequence name for a DbEntity.

Overrides:

sequenceName in class OraclePkGenerator

guidPkFromDatabase

protected String guidPkFromDatabase(DataNode node,
                                    DbEntity entity)
                             throws SQLException

Throws:

SQLException