SGenerator

java.lang.Object

simpleorm.sessionjdbc.SGenerator

Direct Known Subclasses:: SGeneratorInsertIdentity

public abstract class SGenerator extends Object

Generate keys using rows in a separate sequence table. This should be done in a separate transaction to avoid locking problems.

One instance per SFieldMeta, ie. not per session or per driver.

Method Summary

Modifier and Type

Method

Description

String

createDDL(SSessionJdbc session)

returns DDL required to support number generation, Eg.

String

dropDDL(SSessionJdbc session)

abstract long

generateKey(SSessionJdbc session, SRecordMeta<?> meta, SFieldScalar keyField)

String

getName()

static SGenerator

theGenerator(SFieldScalar fld)

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details
- theGenerator
  
  public static SGenerator theGenerator(SFieldScalar fld)
- getName
  
  public String getName()
- generateKey
  
  public abstract long generateKey(SSessionJdbc session, SRecordMeta<?> meta, SFieldScalar keyField)
- createDDL
  
  public String createDDL(SSessionJdbc session)
  
  returns DDL required to support number generation, Eg. "CREATE SEQUENCE FOO..." Returns a string rather than just doing it so that the caller can create a DDL file if they want to.
- dropDDL
  
  public String dropDDL(SSessionJdbc session)