Add creation of getter/setter functionality for associations

[Matthias Schoettle]

TouchRAM is able to create getters and setters for attributes. This functionality could also be added to association ends.

For example, the user tap-and-holds on the role name of an end and gets presented the choice to create a getter and/or setter for this end. Since both Attribute and AssociationEnd are a StructuralFeature this should be easy to implement by adjusting the current functionality. StructuralFeature.getType() returns the type. The only twist could be the multiplicity, where it depends for association ends.

[Matthias Schoettle]

@jmiller57 could you potentially look into this after completing your current task?

[Jeremy Miller]

Yes sir. Will do.

[Laura Martellotto]

References issue #45 : Added TapAndHold event on AssociationRoleName TextView. It works for multiplicity of 1 (not array type yet).

→ <<cset a79ea69dbcd8>>

[Laura Martellotto]

References issue #45 : Added ArrayType when the multiplicity is upper than 1.

→ <<cset 8604bd340f2a>>

[Thomas Di Meco]

I merged this issue into the #151 branch to use it. Make sure to merge new modifications before working on this issue.

[Matthias Schoettle]

I think to resolve this issue here the following change is necessary: Instead of ArrayType for multiplicity > 1 it should probably use a sequence or set from our metamodel ... or ask the user what to use maybe? Because the user could also want to use an implementation class.

[Thomas Di Meco]

I rebased the #45 branch to the current master to avoid resolving some annoying conflicts again.

[Thomas Di Meco]

References issue #45: Changed generated get/set types from RArray to RSequence

→ <<cset 2bfc57d428a4>>

[Matthias Schoettle]

Resolved for now. The remaining issue is a core issue: What type to use for multiplicity of many? This might depend on what the intention with it is and/or on the specific multiplicity.