be.SIRAPRISE.client.jsba

Class DmlSingleAssignmentCommand

java.lang.Object

be.SIRAPRISE.client.jsba.DmlCommand

be.SIRAPRISE.client.jsba.DmlAssignmentCommand

be.SIRAPRISE.client.jsba.DmlSingleAssignmentCommand

Direct Known Subclasses:

DmlAddCommand, DmlAssertCommand, DmlDeleteCommand, DmlUnassertCommand, DmlUpdateCommand

public abstract class DmlSingleAssignmentCommand
extends DmlAssignmentCommand

Author:

Erwin

Constructor Summary

Constructors

Constructor and Description
DmlSingleAssignmentCommand(java.lang.String relvarName, java.lang.Object o) Creates the command object.

Method Summary

Modifier and Type	Method and Description
java.lang.String	getRelationText() Gets the relation text denoting the singleton relation holding the tuple holding the values drawn from object o for the named relvar
java.lang.String	getRelvarName() Gets The name of the relvar to which the update is targeted
void	success() If the object from which this command was created, implements UpdatableDBObject, invokes that object's setPreUpdateState() method to reflect the successfull database insert or update.

Methods inherited from class be.SIRAPRISE.client.jsba.DmlAssignmentCommand

getServerAssignmentCommand

Methods inherited from class be.SIRAPRISE.client.jsba.DmlCommand

execDmlCommand, execDmlCommandAndEndTransaction, getCommand, getServerCommand

Methods inherited from class java.lang.Object

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

Constructor Detail

DmlSingleAssignmentCommand

public DmlSingleAssignmentCommand(java.lang.String relvarName,
                                  java.lang.Object o)

Creates the command object. It is required that for each attribute in the heading of the named database relvar, there must be a corresponding getter method with the following characteristics :

• the method name is composed of the lowercase string 'get', the capitalized name of the relvar (e.g. 'Relvar' or 'Storagespace'), and the capitalized attribute name (e.g. Extentscount)
• the method takes no arguments
• the method returns a java.lang.String
• the method is public

Other methods may exist besides these required getter methods. The getter methods in question need not be declared in the object's class itself, they may also be inherited from some superclass of the object's class.

Parameters:

relvarName - The name of the relvar in which a tuple for the object is to be added

o - The object for which an update operation (add/assert/delete/unassert/update) is to be performed in the named relvar

Throws:

java.lang.IllegalArgumentException - If relvarName or o are null, or if relvarName is the zero-length string.

Method Detail

getRelationText

public final java.lang.String getRelationText()

Gets the relation text denoting the singleton relation holding the tuple holding the values drawn from object o for the named relvar

Returns:

the relation text denoting the singleton relation holding the tuple holding the values drawn from object o for the named relvar

getRelvarName

public final java.lang.String getRelvarName()

Gets The name of the relvar to which the update is targeted

Returns:

The name of the relvar to which the update is targeted

success

public final void success()

If the object from which this command was created, implements UpdatableDBObject, invokes that object's setPreUpdateState() method to reflect the successfull database insert or update.

Specified by:

success in class DmlCommand