diesel-inv-spec Pub

Inventory examples

Upsert by default uses the payload and assumes it has an assetRef or a key:

Diesel interfaces:


These are the signatures you should use in your code.

Before you do anything with a class, it needs registered to a specific inventory implementation. classNames are comma-separated and you can use "*" to default a single inventory type to all classes in a project.

See below these sections, for the supported inventories.

Note: try to avoid using diesel.inv.register unless you need dynamic inventory mapping OR for the "*" mapping of all classes - otherwise use the annotation per class ($anno(inventory="my.preferred.inventory"))

msg diesel.inv.register  (inventory, classNames)

And then you have to connect that inventory to an instance (use default for the connection if you only intend to support one and it's default):

msg diesel.inv.connect  (inventory, connection?)

msg diesel.inv.testConnection  (inventory, connection?)

msg diesel.inv.upsert  (inventory?, connection?, className?, entity?, key?)

msg diesel.inv.find  (inventory?, connection?, className, key)

msg diesel.inv.remove  (inventory?, connection?, className, key)

msg diesel.inv.query  (inventory?, connection?, ref, attrs, from?, size?, countOnly?)

msg diesel.inv.listAll  (inventory?, connection?, ref, from?, size?)

msg diesel.inv.inspect  (inventory?, connection?, ref, from?, size?)

msg diesel.inv.debug  (inventory?, connection?, ref, from?, size?)

Implementation signatures:


These are used internally, to implement the interface messages above. You should not call these in your code!

msg diesel.inv.impl.testConnection  (inventory, connection, env)

msg diesel.inv.impl.connect  (inventory, connection, env)

msg diesel.inv.impl.upsert  (inventory?, connection?, className, table, entity, assetRef, key)

msg diesel.inv.impl.listAll  (inventory?, connection?, className, table, ref, from?, size?, countOnly?)

msg diesel.inv.impl.remove  (inventory?, connection?, className, table, ref)

msg diesel.inv.impl.findByQuery  (inventory?, connection?, className, table, from?, size?, countOnly?, sort?)

msg diesel.inv.impl.findByRef  (inventory?, connection?, className, table, ref)

If the inventory or connection are not passed in, they are not known and assumed to be the default for the className.

For the return signatures and examples, see the implementations for DieselMonkey++ below.

diesel.db.col Connecting


$when:: diesel.inv.impl.testConnection (inventory is "diesel.db.col", connection)
   . (payload="haha, ok")

$when:: diesel.inv.impl.connect (inventory == "diesel.db.col", connection, env)
   . (payload="connected, ok")

diesel.db.col CRUD - creating and managing entities

Create is special - needs to add the "assetRef" to the entity

$when:: diesel.inv.impl.upsert (inventory == "diesel.db.col", className, table, key, assetRef, entity)
   . (k=(key || assetRef[="key"]))
   . (e=(entity + {assetRef:assetRef}))
   diesel.db.col.upsert (collection=table, id=k, document=e)
   . (payload=entity)

$when:: diesel.inv.impl.listAll (inventory == "diesel.db.col", className, table)
   diesel.db.col.query (collection=table)

$when:: diesel.inv.impl.findByRef (inventory == "diesel.db.col", className, table, ref)
   diesel.db.col.get (collection=table, id=ref[="key"...)

$when:: diesel.inv.impl.remove (inventory == "diesel.db.col", className, table, ref)
   diesel.db.col.remove (collection=table, id=ref[="key"...)

$when:: diesel.inv.impl.findByQuery (inventory == "diesel.db.col", connection, className, table, query)
   ctx.echo (q=query)
   diesel.db.col.query (collection=table, query.asAttrs)

diesel.db.inmem


$when:: diesel.inv.impl.testConnection (inventory is "diesel.db.inmem", connection)
   . (payload="haha, ok")

$when:: diesel.inv.impl.connect (inventory == "diesel.db.inmem", connection, env)
   . (payload="connected, ok")

diesel.db.inmem CRUD - creating and managing entities

Create is special - needs to add the "assetRef" to the entity

$when:: diesel.inv.impl.upsert (inventory == "diesel.db.inmem", className, table, key, assetRef, entity)
   . (k=(key || assetRef[="key"]))
   . (entity=(entity + {assetRef:assetRef}))
   diesel.db.inmem.upsert (collection=table, id=k, document=entity)
   . (payload=entity)

$when:: diesel.inv.impl.listAll (inventory == "diesel.db.inmem", className, table)
   diesel.db.inmem.query (collection=table)

$when:: diesel.inv.impl.findByRef (inventory == "diesel.db.inmem", className, table, ref)
   diesel.db.inmem.get (collection=table, id=ref[="key"...)

$when:: diesel.inv.impl.remove (inventory == "diesel.db.inmem", className, table, ref)
   diesel.db.inmem.remove (collection=table, id=ref[="key"...)

$when:: diesel.inv.impl.findByQuery (inventory == "diesel.db.inmem", connection, className, table, query)
   ctx.echo (q=query)
   diesel.db.inmem.query (collection=table, query.asAttrs)

diesel.db.memshared


$when:: diesel.inv.impl.testConnection (inventory is "diesel.db.memshared", connection)
   . (payload="haha, ok")

$when:: diesel.inv.impl.connect (inventory == "diesel.db.memshared", connection, env)
   . (payload="connected, ok")

diesel.db.memshared CRUD - creating and managing entities


Create is special - needs to add the "assetRef" to the entity

$when:: diesel.inv.impl.upsert (inventory == "diesel.db.memshared", className, table, key, assetRef, entity)
   . (k=(key || assetRef[="key"]))
   . (entity=(entity + {assetRef:assetRef}))
   diesel.db.memshared.upsert (collection=table, id=k, document=entity)
   . (payload=entity)

$when:: diesel.inv.impl.listAll (inventory == "diesel.db.memshared", className, table)
   diesel.db.memshared.query (collection=table, from, size)

$when:: diesel.inv.impl.findByRef (inventory == "diesel.db.memshared", className, table, ref)
   diesel.db.memshared.get (collection=table, id=ref[="key"...)

$when:: diesel.inv.impl.remove (inventory == "diesel.db.memshared", className, table, ref)
   diesel.db.memshared.remove (collection=table, id=ref[="key"...)

$when:: diesel.inv.impl.findByQuery (inventory == "diesel.db.memshared", connection, className, table, query)
   ctx.echo (q=query)
   diesel.db.memshared.query (collection=table, from, size, query.asAttrs)

Postgres Inventory


Note for postgres, you'll need to create a new connection before the rules below work:

// $send diesel.db.postgres.new ( // connection = "default", // url = POSTGRES_URL // )

$when:: diesel.inv.impl.testConnection (inventory is "diesel.db.postgres", connection)
   . (payload="haha, ok")

TODO when connecting, grab the connection somehow?

$when:: diesel.inv.impl.connect (inventory == "diesel.db.postgres", connection, env)
   . (payload="connected, ok")

CRUD - creating and managing entities

Create is special - needs to add the "assetRef" to the entity

$when:: diesel.inv.impl.upsert (inventory == "diesel.db.postgres", className, table, key, assetRef, entity)
   . (k=(key || assetRef[="key"]))
   . (entity=(entity + {assetRef:assetRef}))
   ctx.echo (entity)
   . (e=(entity + {assetRef:assetRef}))
   diesel.db.postgres.upsert (collection=table, id=k, document=e)
   . (payload=entity)

$when:: diesel.inv.impl.listAll (inventory == "diesel.db.postgres", className, table)
   diesel.db.postgres.query (collection=table)

$when:: diesel.inv.impl.findByRef (inventory == "diesel.db.postgres", className, table, ref)
   diesel.db.postgres.get (collection=table, id=ref[="key"...)

$when:: diesel.inv.impl.remove (inventory == "diesel.db.postgres", className, table, ref)
   diesel.db.postgres.remove (collection=table, id=ref[="key"...)

$when:: diesel.inv.impl.findByQuery (inventory == "diesel.db.postgres", connection, className, table, query)
   ctx.echo (q=query)
   diesel.db.postgres.query (collection=table, query.asAttrs)

DieselMonkey sample implementations


$when:: diesel.inv.impl.testConnection (inventory is "diesel.monkeys", connection)
   step return is optional, throw exception if any problems

$when:: diesel.inv.impl.connect (inventory is "diesel.monkeys", connection, env)
   step return is optional, throw exception if any problems

Create is special - needs to add the "assetRef" to the entity

$when:: diesel.inv.impl.upsert (inventory is "diesel.monkeys", className, table, key, assetRef, entity)
   step return the entity as created
   . (payload=entity)

$when:: diesel.inv.impl.listAll (inventory is "diesel.monkeys", className, table)
   step return total count and paginated data
   . (payload={total:1,data:[{name:"monkeyboss"}]})

$when:: diesel.inv.impl.findByQuery (inventory is "diesel.monkeys", connection, className, table, query)
   step return total count and paginated data
   . (payload={total:1,data:[{name:"monkeyboss"}]})

$when:: diesel.inv.impl.findByRef (inventory is "diesel.monkeys", className, table, ref)
   step return total count and paginated data OR the entity you found / null for nothing
   . (payload={total:1,data:[{name:"monkeyboss"}]})

$when:: diesel.inv.impl.remove (inventory is "diesel.monkeys", className, table, ref)
   step nothing to return

Default fallback rules


These kick in if no inventory rules were defined

fallback:: diesel.inv.impl.upsert (className)
   diesel.throw (msg ="No inventory defined for ${cla"...="No invent...)

fallback:: diesel.inv.impl.findByRef (className)
   diesel.throw (msg ="No inventory defined for ${cla"...="No invent...)

fallback:: diesel.inv.impl.findByQuery (className)
   diesel.throw (msg ="No inventory defined for ${cla"...="No invent...)

fallback:: diesel.inv.impl.update (className)
   diesel.throw (msg ="No inventory defined for ${cla"...="No invent...)

fallback:: diesel.inv.impl.delete (className)
   diesel.throw (msg ="No inventory defined for ${cla"...="No invent...)


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By: Razie | 2021-01-16 .. 2024-05-15 | Tags: spec , dsl , DslDomain , database , inventory


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