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

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

public final class Update
extends 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:

$Revision$ $Date: 2009-07-13 17:22:43 (Mon, 13 Jul 2009) $

Author:

Ahmad Hassan, Ralf Joachim

Constructor Summary

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

Method Summary

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.
Condition	getCondition() Get condition that specifies which records to update.
void	setCondition(Condition condition) Set condition that specifies which records to update.
void	toString(QueryContext ctx) Append a string representation of the object to the given QueryContext.

Methods inherited from class org.castor.cpa.persistence.sql.query.QueryObject

toString

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.

toString

public void toString(QueryContext ctx)

Description copied from class: QueryObject

Append a string representation of the object to the given QueryContext. In general, this toString method appends a string that "textually represents" this object. The result should be a string in valid SQL syntax. It is required that all subclasses override this method.

Specified by:

toString in class QueryObject

Parameters:

ctx - QueryContext to append the string representation of the object to.