org.castor.cpa.persistence.sql.query.visitor
Class OracleQueryVisitor

java.lang.Object
  org.castor.cpa.persistence.sql.query.visitor.DefaultQueryVisitor
      org.castor.cpa.persistence.sql.query.visitor.DefaultDoubleQuoteNameQueryVisitor
          org.castor.cpa.persistence.sql.query.visitor.OracleQueryVisitor

All Implemented Interfaces:

Visitor

public final class OracleQueryVisitor
extends DefaultDoubleQuoteNameQueryVisitor

Visitor defining special behavior of query building for Oracle databases.

Version:

$Revision: 8469 $ $Date: 2006-04-25 15:08:23 -0600 (Tue, 25 Apr 2006) $

Author:

Dennis Butterstein

Field Summary

Fields inherited from class org.castor.cpa.persistence.sql.query.visitor.DefaultQueryVisitor

_queryString, LOG

Constructor Summary

OracleQueryVisitor()

Method Summary

protected String	getSequenceNextValString(String seqName) Returns the database engine specific string to fetch sequence next value.
protected void	handleLock(Select select) Method appending lock clauses as "FOR UPDATE" when needed.
protected String	quoteName(String name) Method returning prepared string to match requirements of specific databases if needed.

Methods inherited from class org.castor.cpa.persistence.sql.query.visitor.DefaultDoubleQuoteNameQueryVisitor

doubleQuoteName

Methods inherited from class org.castor.cpa.persistence.sql.query.visitor.DefaultQueryVisitor

addTableNames, handleJoinConstruction, toString, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class java.lang.Object

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

Constructor Detail

OracleQueryVisitor

public OracleQueryVisitor()

Method Detail

quoteName

protected String quoteName(String name)

Method returning prepared string to match requirements of specific databases if needed.

Overrides:

quoteName in class DefaultQueryVisitor

Parameters:

name - String to be prepared.

Returns:

Prepared string.

getSequenceNextValString

protected String getSequenceNextValString(String seqName)

Returns the database engine specific string to fetch sequence next value.

Overrides:

getSequenceNextValString in class DefaultQueryVisitor

Parameters:

seqName - Name of the sequence.

Returns:

String to fetch sequence next value.

handleLock

protected void handleLock(Select select)

Method appending lock clauses as "FOR UPDATE" when needed.

Overrides:

handleLock in class DefaultQueryVisitor

Parameters:

select - Select to check if locking-clauses have to be appended or not.