Inline Backend project into Domain

Author: bartelink

CHANGELOG.md

@@ -37,7 +37,8 @@ The `Unreleased` section name is replaced by the expected version of next releas
 - `Equinox.Tool`: Target `FSharp.Core` v `4.7.1`
 - Update AzDO CI/CD to use `windows-latest`
 - Update to `3.1.101` SDK
-- Remove `module Commands` convention from in examples
+- Remove `module Commands` convention from examples
+- Remove separated `Backend` project from examples (support for architecturally separating all domain logic from Equinox and Domain Service logic from Concrete Stores remains)
 - Revise semantics of Cart Sample Command handling
 - Simplify `AsyncCacheCell` [#229](https://github.com/jet/equinox/pull/229)
 

DOCUMENTATION.md

@@ -1307,7 +1307,7 @@ which can then summarize the overall transaction.
 ### Idiomatic approach - composed method based on side-effect free functions
 
 There's an example of such a case in the
-[Cart's Domain Service](https://github.com/jet/equinox/blob/master/samples/Store/Backend/Cart.fs#L53):
+[Cart's Domain Service](https://github.com/jet/equinox/blob/master/samples/Store/Domain/Cart.fs#L128):
 
 ```fsharp
 let interpretMany fold interpreters (state : 'state) : 'state * 'event list =
@@ -1334,7 +1334,7 @@ there's no need to read it as the preceding approach is the recommended one is
 advised as a default strategy to use_
 
 As illustrated in [Cart's Domain
-Service](https://github.com/jet/equinox/blob/master/samples/Store/Backend/Cart.fs#L5),
+Service](https://github.com/jet/equinox/blob/master/samples/Store/Domain/Cart.fs#L99),
 an alternate approach is to encapsulate the folding (Equinox in V1 exposed an
 interface that encouraged such patterns; this was removed in two steps, as code
 written using the idiomatic approach is [intrinsically simpler, even if it

Equinox.sln

@@ -29,8 +29,6 @@ Project("{6EC3EE1D-3C4E-46DD-8F32-0CC8E7565705}") = "Domain", "samples\Store\Dom
 EndProject
 Project("{6EC3EE1D-3C4E-46DD-8F32-0CC8E7565705}") = "Domain.Tests", "samples\Store\Domain.Tests\Domain.Tests.fsproj", "{406A280E-0708-4B12-8443-8FD5660CD271}"
 EndProject
-Project("{6EC3EE1D-3C4E-46DD-8F32-0CC8E7565705}") = "Backend", "samples\Store\Backend\Backend.fsproj", "{0D98B603-2EBB-40C2-AFE5-083C92EFB822}"
-EndProject
 Project("{6EC3EE1D-3C4E-46DD-8F32-0CC8E7565705}") = "Infrastructure", "samples\Infrastructure\Infrastructure.fsproj", "{ACE52D04-2FE3-4FD6-A066-9C81429C3997}"
 EndProject
 Project("{6EC3EE1D-3C4E-46DD-8F32-0CC8E7565705}") = "Integration", "samples\Store\Integration\Integration.fsproj", "{0B2D5815-D6A5-4AAC-9B75-D57B165E2A92}"
@@ -108,10 +106,6 @@ Global
 		{406A280E-0708-4B12-8443-8FD5660CD271}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{406A280E-0708-4B12-8443-8FD5660CD271}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{406A280E-0708-4B12-8443-8FD5660CD271}.Release|Any CPU.Build.0 = Release|Any CPU
-		{0D98B603-2EBB-40C2-AFE5-083C92EFB822}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{0D98B603-2EBB-40C2-AFE5-083C92EFB822}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{0D98B603-2EBB-40C2-AFE5-083C92EFB822}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{0D98B603-2EBB-40C2-AFE5-083C92EFB822}.Release|Any CPU.Build.0 = Release|Any CPU
 		{ACE52D04-2FE3-4FD6-A066-9C81429C3997}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{ACE52D04-2FE3-4FD6-A066-9C81429C3997}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{ACE52D04-2FE3-4FD6-A066-9C81429C3997}.Release|Any CPU.ActiveCfg = Release|Any CPU
@@ -204,7 +198,6 @@ Global
 		{D67D5A5F-2E59-4514-A997-FEBDC467AAF6} = {8F3EB30C-8BA3-4CC0-8361-0EA47C19ABB9}
 		{37B4A45F-039E-4515-8A84-D242DDE12D22} = {D67D5A5F-2E59-4514-A997-FEBDC467AAF6}
 		{406A280E-0708-4B12-8443-8FD5660CD271} = {D67D5A5F-2E59-4514-A997-FEBDC467AAF6}
-		{0D98B603-2EBB-40C2-AFE5-083C92EFB822} = {D67D5A5F-2E59-4514-A997-FEBDC467AAF6}
 		{ACE52D04-2FE3-4FD6-A066-9C81429C3997} = {8F3EB30C-8BA3-4CC0-8361-0EA47C19ABB9}
 		{0B2D5815-D6A5-4AAC-9B75-D57B165E2A92} = {D67D5A5F-2E59-4514-A997-FEBDC467AAF6}
 		{1B0D4568-96FD-4083-8520-CD537C0B2FF0} = {8F3EB30C-8BA3-4CC0-8361-0EA47C19ABB9}

README.md

@@ -662,7 +662,7 @@ The main language in mind for consumption is of course F# - many would say that
 
 ## You say I can use volatile memory for integration tests, could this also be used for learning how to get started building event sourcing programs with equinox? 
 
-The `MemoryStore` backend is intended to implement the complete semantics of a durable store (aside from caching). The main benefit of using it is that any tests using it have zero environment dependencies. In some cases this can be very useful for demo apps or generators (rather than assuming a specific store at a specific endpoint and/or credentials, there is something to point at which does not require configuration or assumptions.). The single problem of course is that it's all in-process; the minute you stop the host, the items on your list will of course disappear. In general, EventStore is a very attractive option for prototyping; the open source edition is trivial to install and has a nice UI that lets you navigate events being produced etc.
+The `MemoryStore` is intended to implement the complete semantics of a durable store (aside from caching). The main benefit of using it is that any tests using it have zero environment dependencies. In some cases this can be very useful for demo apps or generators (rather than assuming a specific store at a specific endpoint and/or credentials, there is something to point at which does not require configuration or assumptions.). The single problem of course is that it's all in-process; the minute you stop the host, the items on your list will of course disappear. In general, EventStore is a very attractive option for prototyping; the open source edition is trivial to install and has a nice UI that lets you navigate events being produced etc.
 
 ### OK, so it supports CosmosDB, EventStoreDB and might even support more in the future. I really don't intend to shift datastores. Period. Why would I take on this complexity only to get the lowest common denominator ?
 

samples/Infrastructure/Infrastructure.fsproj

@@ -22,7 +22,6 @@
     <ProjectReference Include="..\..\src\Equinox.CosmosStore\Equinox.CosmosStore.fsproj" />
     <ProjectReference Include="..\..\src\Equinox.EventStore\Equinox.EventStore.fsproj" />
     <ProjectReference Include="..\..\src\Equinox.MemoryStore\Equinox.MemoryStore.fsproj" />
-    <ProjectReference Include="..\Store\Backend\Backend.fsproj" />
     <ProjectReference Include="..\Store\Domain\Domain.fsproj" />
     <ProjectReference Include="..\TodoBackend\TodoBackend.fsproj" />
   </ItemGroup>

samples/Infrastructure/Services.fs

@@ -29,12 +29,12 @@ type ServiceBuilder(storageConfig, handlerLog) =
      member __.CreateFavoritesService() =
         let fold, initial = Favorites.Fold.fold, Favorites.Fold.initial
         let snapshot = Favorites.Fold.isOrigin,Favorites.Fold.snapshot
-        Backend.Favorites.create handlerLog (resolver.Resolve(Favorites.Events.codec,fold,initial,snapshot))
+        Favorites.create handlerLog (resolver.Resolve(Favorites.Events.codec,fold,initial,snapshot))
 
      member __.CreateSaveForLaterService() =
         let fold, initial = SavedForLater.Fold.fold, SavedForLater.Fold.initial
         let snapshot = SavedForLater.Fold.isOrigin,SavedForLater.Fold.compact
-        Backend.SavedForLater.create 50 handlerLog (resolver.Resolve(SavedForLater.Events.codec,fold,initial,snapshot))
+        SavedForLater.create 50 handlerLog (resolver.Resolve(SavedForLater.Events.codec,fold,initial,snapshot))
 
      member __.CreateTodosService() =
         let fold, initial = TodoBackend.Fold.fold, TodoBackend.Fold.initial