Version 4 #6
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@ -98,6 +98,15 @@ type Field = {
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{ this with Qualifier = Some alias }
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/// How fields should be matched
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[<Struct>]
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type FieldMatch =
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/// Any field matches (OR)
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| Any
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/// All fields match (AND)
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| All
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/// The required document serialization implementation
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type IDocumentSerializer =
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@ -109,24 +109,46 @@ module Parameters =
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[<RequireQualifiedAccess>]
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module Query =
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/// Create a WHERE clause fragment to implement a comparison on fields in a JSON document
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[<CompiledName "WhereByFields">]
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let whereByFields fields howMatched =
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let mutable idx = 0
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let nameField () =
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let name = $"field{idx}"
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idx <- idx + 1
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name
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fields
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|> List.map (fun it ->
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let fieldName = it.Qualifier |> Option.map (fun q -> $"{q}.data") |> Option.defaultValue "data"
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let jsonPath =
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if it.Name.Contains '.' then "#>>'{" + String.concat "," (it.Name.Split '.') + "}'"
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else $"->>'{it.Name}'"
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let column = fieldName + jsonPath
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match it.Op with
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| EX | NEX -> $"{column} {it.Op}"
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| BT ->
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let p = defaultArg it.ParameterName (nameField ())
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let names = $"{p}min AND {p}max"
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let values = it.Value :?> obj list
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match values[0] with
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| :? int8 | :? uint8 | :? int16 | :? uint16 | :? int | :? uint32 | :? int64 | :? uint64
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| :? decimal | :? single | :? double -> $"({column})::numeric {it.Op} {names}"
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| _ -> $"{column} {it.Op} {names}"
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| _ ->
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let p = defaultArg it.ParameterName (nameField ())
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$"{column} {it.Op} {p}")
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|> String.concat (match howMatched with Any -> " OR " | All -> " AND ")
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/// Create a WHERE clause fragment to implement a comparison on a field in a JSON document
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[<CompiledName "WhereByField">]
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//[<Obsolete "Use whereByFields / WhereByFields instead">]
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let whereByField field paramName =
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match field.Op with
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| EX | NEX -> $"data->>'{field.Name}' {field.Op}"
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| BT ->
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let names = $"{paramName}min AND {paramName}max"
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let values = field.Value :?> obj list
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match values[0] with
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| :? int8 | :? uint8 | :? int16 | :? uint16 | :? int | :? uint32 | :? int64 | :? uint64
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| :? decimal | :? single | :? double -> $"(data->>'{field.Name}')::numeric {field.Op} {names}"
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| _ -> $"data->>'{field.Name}' {field.Op} {names}"
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| _ -> $"data->>'{field.Name}' {field.Op} %s{paramName}"
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whereByFields [ { field with ParameterName = Some paramName } ] Any
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/// Create a WHERE clause fragment to implement an ID-based query
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[<CompiledName "WhereById">]
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let whereById paramName =
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whereByField (Field.EQ (Configuration.idField ()) 0) paramName
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whereByFields [ { Field.EQ (Configuration.idField ()) 0 with ParameterName = Some paramName } ] Any
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/// Table and index definition queries
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module Definition =
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@ -115,9 +115,9 @@ let all =
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Expect.equal "@name" field.ParameterName.Value "The parameter name is incorrect"
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}
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test "WithQualifier succeeds" {
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let field = (Field.EQ "Bill" "Matt").WithParameterName "@joe"
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let field = (Field.EQ "Bill" "Matt").WithQualifier "joe"
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Expect.isSome field.Qualifier "The table qualifier should have been filled"
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Expect.equal "@joe" field.Qualifier.Value "The table qualifier is incorrect"
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Expect.equal "joe" field.Qualifier.Value "The table qualifier is incorrect"
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}
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]
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testList "Query" [
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