Package PamModel

Class DependencyManager

java.lang.Object

PamModel.DependencyManager

public class DependencyManager
extends Object

Constructor Summary

Constructors

Constructor	Description
DependencyManager(PamModel pamModel)

Method Summary

Modifier and Type	Method	Description
PamControlledUnit	checkDependency(Frame parentFrame, PamDependent pamDependent)	Checks through the data model and tries to find an appropriate PamDataBlock.
PamControlledUnit	checkDependency(Frame parentFrame, PamDependent pamDependent, boolean create)	Checks through the data model and tries to find an appropriate PamDataBlock.
PamControlledUnit	findDependency(PamDependency pamDependency)	Checks through the data model and tries to find an appropriate PamDataBlock.

Methods inherited from class java.lang.Object

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

Constructor Details

DependencyManager

public DependencyManager(PamModel pamModel)

Method Details

checkDependency

public PamControlledUnit checkDependency(Frame parentFrame,
 PamDependent pamDependent)

Checks through the data model and tries to find an appropriate PamDataBlock. Returns a reference to the datablock if it can find one, null otherwise.

Parameters:

pamDependent -

parentComponent -

Returns:

reference to a PamControlledUnit satisfying the dependency

checkDependency

public PamControlledUnit checkDependency(Frame parentFrame,
 PamDependent pamDependent,
 boolean create)

Checks through the data model and tries to find an appropriate PamDataBlock. Returns a reference to the datablock if it can find one, null otherwise.

Parameters:

pamDependent -

create - create set to true if you want checkDependency to automatically create required dependencies.

parentComponent -

Returns:

reference to a PamDataBlock satisfying the dependency

findDependency

public PamControlledUnit findDependency(PamDependency pamDependency)

Checks through the data model and tries to find an appropriate PamDataBlock. Returns a reference to the datablock if it can find one, null otherwise.

In some rare instances, such as Logger forms the dependence may be on a module rather than a particular type of data, i.e. the forms need the database, but the database produces no data units to check against, so the first test will fail.

Parameters:

pamDependency -

Returns:

reference to a PamDataBlock satisfying the dependency