org.castor.cpa.persistence.sql.query
Class Update

java.lang.Object
  org.castor.cpa.persistence.sql.query.Update

All Implemented Interfaces:

QueryObject

public final class Update
extends Object
implements QueryObject

Class to generate SQL update query statements.
Note: Be aware that the SQL statement will be invalid without any assignment of for empty compound conditions.

Version:

$Revision: 8994 $ $Date: 2011-08-02 01:40:59 +0200 (Di, 02 Aug 2011) $

Author:

Ahmad Hassan, Ralf Joachim, Dennis Butterstein

Constructor Summary

Update(String name)
Construct a SQL update statement that updates records of the table provided.

Method Summary

void	accept(Visitor visitor) Accept method to handle incoming visitors.
void	addAssignment(Assignment assignment) Appends given assignment to the list of Assignment objects.
void	addAssignment(Column column, Expression value) Appends an assignment of the given value to the given column.
List<Assignment>	getAssignment() Get method returning current list of assignments.
Condition	getCondition() Get condition that specifies which records to update.
Qualifier	getQualifier() Get method returning qualifier currently set.
void	setCondition(Condition condition) Set condition that specifies which records to update.
String	toString() Method constructing query string.

Methods inherited from class java.lang.Object

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

Constructor Detail

Update

public Update(String name)

Construct a SQL update statement that updates records of the table provided.

Parameters:

name - Name of the table in update statement.

Method Detail

addAssignment

public void addAssignment(Assignment assignment)

Appends given assignment to the list of Assignment objects.

Parameters:

assignment - Assignment object added to the list of assignments that will be appended to SET clause of sql statement.

addAssignment

public void addAssignment(Column column,
                          Expression value)

Appends an assignment of the given value to the given column.

Parameters:

column - Column to assign the value to.

value - Expression to be assigned to the column.

getCondition

public Condition getCondition()

Get condition that specifies which records to update.

Returns:

Condition that specifies which records to update.

setCondition

public void setCondition(Condition condition)

Set condition that specifies which records to update.

Parameters:

condition - Condition that specifies which records to update.

getQualifier

public Qualifier getQualifier()

Get method returning qualifier currently set.

Returns:

Qualifier of the table to update records of.

getAssignment

public List<Assignment> getAssignment()

Get method returning current list of assignments.

Returns:

List of assignments.

accept

public void accept(Visitor visitor)

Accept method to handle incoming visitors.

Specified by:

accept in interface QueryObject

Parameters:

visitor - Visitor to be handled.

toString

public String toString()

Method constructing query string.

Overrides:

toString in class Object

Returns:

Constructed query string.