workflo.query-engine.query
attrs-from-query-root
(attrs-from-query-root q)Extract attributes from a query root expression.
backref
(backref source attr)Returns the target entity definition, the forward ref attribute name and the cardinality of the backref for a source entity and a backref attribute.
backref-attr->forward-attrs
(backref-attr->forward-attrs k)entity-ref
(entity-ref source attr)Returns the target entity definition for a source entity and a ref attribute.
fetch-entity-data
(fetch-entity-data env entity singular? id-or-ids attrs params)Fetches one or more items of an entity from the data layer.
id-attr
(id-attr env)process-query
(process-query query data-layer env)(process-query query data-layer env opts)Processes an Om Next query given a data layer, an environment that is passed through to the data layer, and optional processing options.
ref-entity
(ref-entity source attr attr-ref)ref-id-attr
(ref-id-attr env)resolve-ident
(resolve-ident env opts q parent-qs attrs params)Resolves an ident query into data.
resolve-join
(resolve-join env opts parent-data q parent-qs params)Resolves a join query into data given a parent data node (an entity map) and optional parameters.
resolve-keyword
(resolve-keyword env opts parent-data q parent-qs params)Resolves a toplevel keyword query into data.
resolve-nested-join
(resolve-nested-join env opts parent-data join-source join-query parent-qs params)Resolves a nested join query (starting from a parent entity map) into data.
resolve-query-node
(resolve-query-node env opts parent-data q parent-qs params)Resolves a query node z into data given a parent data node and optional parameters.
resolve-toplevel-join
(resolve-toplevel-join env opts join-source join-query parent-qs params)Resolves a toplevel join query (where no parent entity exists and our convention is to perform the join on all items of an entity (denoted by the query join source key).
singular-key?
(singular-key? k)Returns whether or not a key is singular (e.g. :user, not :users).