MondrianNew
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Hi,
I took a look at MondrianNew. This is an API to construct explicitly every node and edge. There is no factory for you, at least not yet. This can be good or bad, depending on your model. Let's take an example: renderer := MORenderer new. node1 := renderer node on: 'hello'. node2 := renderer node on: 'world'. edge := renderer edge from: node1 to: node2. Here you are explicitly remembering the node references and you are passing them to the edge creation. When you have a handful of these nodes, this can fit nicely what you want. As soon as you have a multitude of nodes, it is no longer easy to make the mapping, because you will have to manage the references manually. In MOViewRenderer we have API that helps you lookup and match nodes only in terms of your model (basically you never get to manipulate nodes or edges, unless you really really want to). The idea behind this is that you should only think in terms of your model and never get to manipulate the internals of Mondrian. This works in many cases, but you do not have such a convenient way to work with explicit nodes and edges like above. So, maybe a good thing would be to add finally some edgeFromNode:toNode: that provides a creation of a node without any node lookup. So, you could have: view := MOViewRenderer new. node1 := view node: 'hello'. node2 := view node: 'world'. edge := view edgeFromNode: node1 toNode: node2. What do you think? Cheers, Doru On 20 Jun 2011, at 15:03, Alexandre Bergel wrote: > The package MondrianNew in the squeaksource repository of Mondrian contains a bunch of classes we quickly defined: > MORenderer>> > addEdge: > addEdges: > addNode: > addNodes: > > MOEdgeFactory>> > from:to: > > MONodeFactory>> > on: > > Cheers, > Alexandre -- www.tudorgirba.com "If you interrupt the barber while he is cutting your hair, you will end up with a messy haircut." _______________________________________________ Moose-dev mailing list [hidden email] https://www.iam.unibe.ch/mailman/listinfo/moose-dev |
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> Let's take an example:
> renderer := MORenderer new. > node1 := renderer node on: 'hello'. > node2 := renderer node on: 'world'. > edge := renderer edge from: node1 to: node2. > > Here you are explicitly remembering the node references and you are passing them to the edge creation. When you have a handful of these nodes, this can fit nicely what you want. I see your point. It is true that having to explicitly manipulate nodes and edges may not be always the best. Something that I had to struggle with in Mondrian is the interaction. I have to explicitly lookup for nodes, which is really cumbersome time to time (cf the mails stef send a few days ago about the interaction). I think that we should not strive for the best API in the World. What I am interested in is having a flexible architecture in which people can experiment with new DSL or language extensions. This MondrianNew is just a try. Regarding: "view edgeFromNode: node1 toNode: node2." yes, it could work. But we already have "view edgeFromAssociations: { node1 -> node2 }", which is shorter. Cheers, Alexandre > > As soon as you have a multitude of nodes, it is no longer easy to make the mapping, because you will have to manage the references manually. > > In MOViewRenderer we have API that helps you lookup and match nodes only in terms of your model (basically you never get to manipulate nodes or edges, unless you really really want to). The idea behind this is that you should only think in terms of your model and never get to manipulate the internals of Mondrian. This works in many cases, but you do not have such a convenient way to work with explicit nodes and edges like above. > > So, maybe a good thing would be to add finally some edgeFromNode:toNode: that provides a creation of a node without any node lookup. So, you could have: > > view := MOViewRenderer new. > node1 := view node: 'hello'. > node2 := view node: 'world'. > edge := view edgeFromNode: node1 toNode: node2. > > What do you think? > > Cheers, > Doru > > > On 20 Jun 2011, at 15:03, Alexandre Bergel wrote: > >> The package MondrianNew in the squeaksource repository of Mondrian contains a bunch of classes we quickly defined: >> MORenderer>> >> addEdge: >> addEdges: >> addNode: >> addNodes: >> >> MOEdgeFactory>> >> from:to: >> >> MONodeFactory>> >> on: >> >> Cheers, >> Alexandre > > > -- > www.tudorgirba.com > > "If you interrupt the barber while he is cutting your hair, > you will end up with a messy haircut." > > > _______________________________________________ > Moose-dev mailing list > [hidden email] > https://www.iam.unibe.ch/mailman/listinfo/moose-dev -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. _______________________________________________ Moose-dev mailing list [hidden email] https://www.iam.unibe.ch/mailman/listinfo/moose-dev |
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Hi Alex,
On 20 Jun 2011, at 16:42, Alexandre Bergel wrote: >> Let's take an example: >> renderer := MORenderer new. >> node1 := renderer node on: 'hello'. >> node2 := renderer node on: 'world'. >> edge := renderer edge from: node1 to: node2. >> >> Here you are explicitly remembering the node references and you are passing them to the edge creation. When you have a handful of these nodes, this can fit nicely what you want. > > I see your point. It is true that having to explicitly manipulate nodes and edges may not be always the best. Something that I had to struggle with in Mondrian is the interaction. I have to explicitly lookup for nodes, which is really cumbersome time to time (cf the mails stef send a few days ago about the interaction). > > I think that we should not strive for the best API in the World. What I am interested in is having a flexible architecture in which people can experiment with new DSL or language extensions. This MondrianNew is just a try. Sure. > Regarding: "view edgeFromNode: node1 toNode: node2." > yes, it could work. But we already have "view edgeFromAssociations: { node1 -> node2 }", which is shorter. It is not the same at all. edgesFromAssociations: delegates to edges:from:to which performs the lookup of nodes. edgeFromNode:toNode: would perform no lookup, but would work directly with the Mondrian Node object. Cheers, Doru > Cheers, > Alexandre > > >> >> As soon as you have a multitude of nodes, it is no longer easy to make the mapping, because you will have to manage the references manually. >> >> In MOViewRenderer we have API that helps you lookup and match nodes only in terms of your model (basically you never get to manipulate nodes or edges, unless you really really want to). The idea behind this is that you should only think in terms of your model and never get to manipulate the internals of Mondrian. This works in many cases, but you do not have such a convenient way to work with explicit nodes and edges like above. >> >> So, maybe a good thing would be to add finally some edgeFromNode:toNode: that provides a creation of a node without any node lookup. So, you could have: >> >> view := MOViewRenderer new. >> node1 := view node: 'hello'. >> node2 := view node: 'world'. >> edge := view edgeFromNode: node1 toNode: node2. >> >> What do you think? >> >> Cheers, >> Doru >> >> >> On 20 Jun 2011, at 15:03, Alexandre Bergel wrote: >> >>> The package MondrianNew in the squeaksource repository of Mondrian contains a bunch of classes we quickly defined: >>> MORenderer>> >>> addEdge: >>> addEdges: >>> addNode: >>> addNodes: >>> >>> MOEdgeFactory>> >>> from:to: >>> >>> MONodeFactory>> >>> on: >>> >>> Cheers, >>> Alexandre >> >> >> -- >> www.tudorgirba.com >> >> "If you interrupt the barber while he is cutting your hair, >> you will end up with a messy haircut." >> >> >> _______________________________________________ >> Moose-dev mailing list >> [hidden email] >> https://www.iam.unibe.ch/mailman/listinfo/moose-dev > > -- > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > Alexandre Bergel http://www.bergel.eu > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > > > > > > _______________________________________________ > Moose-dev mailing list > [hidden email] > https://www.iam.unibe.ch/mailman/listinfo/moose-dev -- www.tudorgirba.com "Beauty is where we see it." _______________________________________________ Moose-dev mailing list [hidden email] https://www.iam.unibe.ch/mailman/listinfo/moose-dev |
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