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values = providingOutputItem.GetValues(consumerThatIsAsking);
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(See also Gena's suggestion on loop vs. pull later on this page).
- Remark: When experimenting with the IsAvailable(), Rob B. and Stef introduced the IExchangeDefinition (see below). Rob K. actually introduced the same interface in the java version. Indeed it is quite natural entity, the exchange definition. Question: do we want to introduce it
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public interface IExchangeDefinition
{
IValueDefinition ValueDefinition { get; }
ITimeSet TimeSet { get; }
IElementSet ElementSet { get; }
}
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public interface IDescribable
{
string Caption { get; set; }
string Description { get; set; }
}
public interface IValueDefinition : IDescribable
{
Type ValueType { get; }
bool DescribesSameAs(IValueDefinition otherValueDefinition);
}
public interface IArgument : IValueDefinition
{
object Value { get; set; }
bool ReadOnly { get; }
}
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- Suggestion by Gena on pull / loop approach, LinkableComponent
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public interface ILinkableComponent
{
LinkableComponentStatus Status { get; }
void Initialize();
void Validate();
void Update();
void Finish();
IList<IInputItem> InputItems { get; }
IList<IOutputItem> OutputItems { get; }
IList<IOutputDecorator> OutputDecorators { get; }
// (another discussion) filtered data
// get's values from the specified component
IMatrix GetValues(IInputExchangeItem query);
//
// when this property is set to true
//
// default value is false (allow cascade calls, pull-driven)
//
bool CascadeUpdateCallsDisabled { get; set; }
}
public interface IInputItem : IExchangeItem
{
IMatrix Values { get; set; }
}
public interface IOutputItem : IExchangeItem
{
IMatrix Values { get; }
}
// =================================== pull approach
var triggerExchangeItem = component.OutputItems[0];
triggerComponent.GetValues(triggerExchangeItem);
// =================================== loop approach
while(!allComponentsAreFinished)
{
foreach(var component in components)
{
if(component.Status != LinkableComponentStatus.Finished)
{
component.Update();
}
}
}
// current
public interface IMatrix : IList
{
int Rows { get; }
int Columns { get; }
object GetValue(int row, int column);
void SetValue(object value, int row, int column);
object[,] GetValues(int startRow, int endRow, int startColumn, int endColumn);
void SetValues(object[,] values, int startRow, int endRow, int startColumn, int endColumn);
}
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