net.sf.farrago.ddl
Class DdlSetContextStmt

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

All Implemented Interfaces:

FarragoSessionDdlStmt

Direct Known Subclasses:

DdlSetCatalogStmt, DdlSetPathStmt, DdlSetSchemaStmt

public abstract class DdlSetContextStmt
extends DdlStmt

DdlSetContextStmt is an abstract base class for DDL statements (such as SET SCHEMA) which modify context variables.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/ddl/DdlSetContextStmt.java#14 $

Author:

John V. Sichi

Field Summary

protected SqlNode	parsedExpr
private SqlNode	valueExpr
protected String	valueString

Constructor Summary

protected

DdlSetContextStmt(SqlNode valueExpr)

Method Summary

SqlNode	getValueExpression()
void	preValidate(FarragoSessionDdlValidator ddlValidator) Called before generic validation.
private void	processExpression(FarragoSession session)
boolean	requiresCommit()

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

getModelElement, isDropRestricted, postCommit, postExecute, preExecute, runsAsDml, visit

Methods inherited from class java.lang.Object

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

Field Detail

valueExpr

private final SqlNode valueExpr

valueString

protected String valueString

parsedExpr

protected SqlNode parsedExpr

Constructor Detail

DdlSetContextStmt

protected DdlSetContextStmt(SqlNode valueExpr)

Method Detail

requiresCommit

public boolean requiresCommit()

Specified by:

requiresCommit in interface FarragoSessionDdlStmt

Overrides:

requiresCommit in class DdlStmt

Returns:

true if this statement implies an auto-commit before and after

getValueExpression

public SqlNode getValueExpression()

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

processExpression

private void processExpression(FarragoSession session)
                        throws Exception

Throws:

Exception