net.sf.farrago.ddl
Class DdlAlterStmt

java.lang.Object
  net.sf.farrago.ddl.DdlStmt
      net.sf.farrago.ddl.DdlAlterStmt

All Implemented Interfaces:

FarragoSessionDdlStmt

Direct Known Subclasses:

DdlAlterGenericStmt, DdlAlterIdentityColumnStmt

public abstract class DdlAlterStmt
extends DdlStmt

DdlAlterStmt represents some but not all DDL ALTER statements. For others, see DdlAlterTableStructureStmt, DdlRebuildTableStmt, and DdlSetSystemParamStmt.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/ddl/DdlAlterStmt.java#17 $

Author:

Stephan Zuercher

Nested Class Summary

private static class

DdlAlterStmt.ActionType

Field Summary

private DdlAlterStmt.ActionType	action
private CwmColumn	column
private FarragoSequenceOptions	identityOptions

Constructor Summary

DdlAlterStmt(CwmModelElement alterElement)
Constructs a new DdlAlterStmt.

DdlAlterStmt(CwmModelElement alterElement, boolean runsAsDml)
Deprecated.

Method Summary

void	alterIdentityColumn(FarragoSequenceOptions options)
protected abstract void	execute(FarragoSessionDdlValidator ddlValidator, FarragoSession session) Execute the alter statement
void	postCommit(FarragoSessionDdlValidator ddlValidator) Called after execution, after committing the repository transaction.
void	preValidate(FarragoSessionDdlValidator ddlValidator) Called before generic validation.
void	setColumn(CwmColumn column)
void	visit(DdlVisitor visitor) Invokes a visitor on this statement.

Methods inherited from class net.sf.farrago.ddl.DdlStmt

getModelElement, isDropRestricted, postExecute, preExecute, requiresCommit, runsAsDml

Methods inherited from class java.lang.Object

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

Field Detail

action

private DdlAlterStmt.ActionType action

column

private CwmColumn column

identityOptions

private FarragoSequenceOptions identityOptions

Constructor Detail

DdlAlterStmt

public DdlAlterStmt(CwmModelElement alterElement)

Constructs a new DdlAlterStmt.

Parameters:

alterElement - top-level element altered by this stmt

DdlAlterStmt

public DdlAlterStmt(CwmModelElement alterElement,
                    boolean runsAsDml)

Deprecated.

Method Detail

setColumn

public void setColumn(CwmColumn column)

alterIdentityColumn

public void alterIdentityColumn(FarragoSequenceOptions options)

visit

public void visit(DdlVisitor visitor)

Description copied from class: DdlStmt

Invokes a visitor on this statement.

Specified by:

visit in class DdlStmt

Parameters:

visitor - DdlVisitor to invoke

preValidate

public void preValidate(FarragoSessionDdlValidator ddlValidator)

Description copied from interface: FarragoSessionDdlStmt

Called before generic validation.

Specified by:

preValidate in interface FarragoSessionDdlStmt

Overrides:

preValidate in class DdlStmt

Parameters:

ddlValidator - the object validating this stmt

postCommit

public void postCommit(FarragoSessionDdlValidator ddlValidator)

Description copied from interface: FarragoSessionDdlStmt

Called after execution, after committing the repository transaction.

Specified by:

postCommit in interface FarragoSessionDdlStmt

Overrides:

postCommit in class DdlStmt

Parameters:

ddlValidator - the object validating this stmt

execute

protected abstract void execute(FarragoSessionDdlValidator ddlValidator,
                                FarragoSession session)

Execute the alter statement

Parameters:

ddlValidator - the session validator

session - a reentrant session