WIP on using Custom for all other queries
This commit is contained in:
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8b242d0fa3
commit
f5ef2ef1d5
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@ -10,12 +10,14 @@ module Configuration =
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let mutable internal connectionString: string option = None
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/// Register a connection string to use for query execution (enables foreign keys)
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[<CompiledName "UseConnectionString">]
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let useConnectionString connStr =
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let builder = SqliteConnectionStringBuilder(connStr)
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builder.ForeignKeys <- Option.toNullable (Some true)
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connectionString <- Some (string builder)
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/// Retrieve the currently configured data source
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[<CompiledName "DbConn">]
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let dbConn () =
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match connectionString with
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| Some connStr ->
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@ -32,42 +34,38 @@ module Query =
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module Definition =
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/// SQL statement to create a document table
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[<CompiledName "EnsureTable">]
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let ensureTable name =
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Query.Definition.ensureTableFor name "TEXT"
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/// Execute a non-query command
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let internal write (cmd: SqliteCommand) = backgroundTask {
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let! _ = cmd.ExecuteNonQueryAsync()
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()
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}
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/// Create an ID parameter (key will be treated as a string)
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[<CompiledName "IdParam">]
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let idParam (key: 'TKey) =
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SqliteParameter("@id", string key)
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/// Create a parameter with a JSON value
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[<CompiledName "JsonParam">]
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let jsonParam name (it: 'TJson) =
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SqliteParameter(name, Configuration.serializer().Serialize it)
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/// Add a parameter to a SQLite command, ignoring the return value (can still be accessed on cmd via indexing)
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let addParam (cmd: SqliteCommand) name (value: obj) =
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cmd.Parameters.AddWithValue(name, value) |> ignore
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let addIdParam (cmd: SqliteCommand) (key: 'TKey) =
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addParam cmd "@id" (string key)
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/// Add a JSON document parameter to a command
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let addJsonParam (cmd: SqliteCommand) name (it: 'TJson) =
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addParam cmd name (Configuration.serializer().Serialize it)
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/// Add ID (@id) and document (@data) parameters to a command
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let addIdAndDocParams cmd (docId: 'TKey) (doc: 'TDoc) =
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addIdParam cmd docId
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addJsonParam cmd "@data" doc
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/// Create a JSON field parameter
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[<CompiledName "FieldParam">]
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let fieldParam (value: obj) =
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SqliteParameter("@field", value)
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/// Create a domain item from a document, specifying the field in which the document is found
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[<CompiledName "FromDocument">]
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let fromDocument<'TDoc> field (rdr: SqliteDataReader) : 'TDoc =
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Configuration.serializer().Deserialize<'TDoc>(rdr.GetString(rdr.GetOrdinal(field)))
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/// Create a domain item from a document
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[<CompiledName "FromData">]
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let fromData<'TDoc> rdr =
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fromDocument<'TDoc> "data" rdr
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/// Create a list of items for the results of the given command, using the specified mapping function
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[<CompiledName "ToCustomList">]
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let toCustomList<'TDoc> (cmd: SqliteCommand) (mapFunc: SqliteDataReader -> 'TDoc) = backgroundTask {
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use! rdr = cmd.ExecuteReaderAsync()
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let mutable it = Seq.empty<'TDoc>
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@ -77,194 +75,95 @@ let toCustomList<'TDoc> (cmd: SqliteCommand) (mapFunc: SqliteDataReader -> 'TDoc
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}
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/// Create a list of items for the results of the given command
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[<CompiledName "ToDocumentList">]
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let toDocumentList<'TDoc> (cmd: SqliteCommand) =
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toCustomList<'TDoc> cmd fromData
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/// Execute a non-query statement to manipulate a document
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let private executeNonQuery query (document: 'T) (conn: SqliteConnection) =
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use cmd = conn.CreateCommand()
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cmd.CommandText <- query
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addJsonParam cmd "@data" document
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write cmd
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/// Execute a non-query statement to manipulate a document with an ID specified
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let private executeNonQueryWithId query (docId: 'TKey) (document: 'TDoc) (conn: SqliteConnection) =
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use cmd = conn.CreateCommand()
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cmd.CommandText <- query
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addIdAndDocParams cmd docId document
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write cmd
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/// Execute a non-query command
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let internal write (cmd: SqliteCommand) = backgroundTask {
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let! _ = cmd.ExecuteNonQueryAsync()
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()
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}
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open System.Threading.Tasks
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/// Command creation helper functions
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[<AutoOpen>]
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module private Helpers =
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let addParam (cmd: SqliteCommand) it =
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cmd.Parameters.Add it |> ignore
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/// Add an ID parameter to a command
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let addIdParam (cmd: SqliteCommand) (key: 'TKey) =
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addParam cmd (idParam key)
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/// Add a JSON document parameter to a command
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let addJsonParam (cmd: SqliteCommand) name (it: 'TJson) =
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addParam cmd (jsonParam name it)
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/// Add ID (@id) and document (@data) parameters to a command
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let addIdAndDocParams cmd (docId: 'TKey) (doc: 'TDoc) =
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addIdParam cmd docId
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addJsonParam cmd "@data" doc
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/// Add a parameter to a SQLite command, ignoring the return value (can still be accessed on cmd via indexing)
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let addFieldParam (cmd: SqliteCommand) (value: obj) =
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addParam cmd (SqliteParameter("@field", value))
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/// Execute a non-query statement to manipulate a document
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let executeNonQuery query (document: 'T) (conn: SqliteConnection) =
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use cmd = conn.CreateCommand()
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cmd.CommandText <- query
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addJsonParam cmd "@data" document
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write cmd
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/// Execute a non-query statement to manipulate a document with an ID specified
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let executeNonQueryWithId query (docId: 'TKey) (document: 'TDoc) (conn: SqliteConnection) =
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use cmd = conn.CreateCommand()
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cmd.CommandText <- query
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addIdAndDocParams cmd docId document
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write cmd
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/// Versions of queries that accept a SqliteConnection as the last parameter
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module WithConn =
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/// Functions to create tables and indexes
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[<RequireQualifiedAccess>]
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module Definition =
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/// Create a document table
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let ensureTable name (conn: SqliteConnection) = backgroundTask {
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use cmd = conn.CreateCommand()
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cmd.CommandText <- Query.Definition.ensureTable name
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do! write cmd
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cmd.CommandText <- Query.Definition.ensureKey name
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do! write cmd
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}
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/// Create an index on a document table
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let ensureIndex tableName indexName fields (conn: SqliteConnection) = backgroundTask {
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use cmd = conn.CreateCommand()
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cmd.CommandText <- Query.Definition.ensureIndexOn tableName indexName fields
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do! write cmd
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}
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/// Insert a new document
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let insert<'TDoc> tableName (document: 'TDoc) conn =
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executeNonQuery (Query.insert tableName) document conn
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/// Save a document, inserting it if it does not exist and updating it if it does (AKA "upsert")
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let save<'TDoc> tableName (document: 'TDoc) conn =
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executeNonQuery (Query.save tableName) document conn
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/// Commands to count documents
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[<RequireQualifiedAccess>]
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module Count =
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/// Count all documents in a table
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let all tableName (conn: SqliteConnection) : Task<int64> = backgroundTask {
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use cmd = conn.CreateCommand()
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cmd.CommandText <- Query.Count.all tableName
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let! result = cmd.ExecuteScalarAsync()
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return result :?> int64
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}
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/// Count matching documents using a comparison on a JSON field
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let byField tableName fieldName op (value: obj) (conn: SqliteConnection) : Task<int64> = backgroundTask {
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use cmd = conn.CreateCommand()
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cmd.CommandText <- Query.Count.byField tableName fieldName op
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addParam cmd "@field" value
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let! result = cmd.ExecuteScalarAsync()
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return result :?> int64
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}
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/// Commands to determine if documents exist
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[<RequireQualifiedAccess>]
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module Exists =
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/// Determine if a document exists for the given ID
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let byId tableName (docId: 'TKey) (conn: SqliteConnection) : Task<bool> = backgroundTask {
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use cmd = conn.CreateCommand()
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cmd.CommandText <- Query.Exists.byId tableName
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addIdParam cmd docId
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let! result = cmd.ExecuteScalarAsync()
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return (result :?> int64) > 0
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}
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/// Determine if a document exists using a comparison on a JSON field
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let byField tableName fieldName op (value: obj) (conn: SqliteConnection) : Task<bool> = backgroundTask {
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use cmd = conn.CreateCommand()
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cmd.CommandText <- Query.Exists.byField tableName fieldName op
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addParam cmd "@field" value
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let! result = cmd.ExecuteScalarAsync()
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return (result :?> int64) > 0
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}
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/// Commands to retrieve documents
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[<RequireQualifiedAccess>]
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module Find =
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/// Retrieve all documents in the given table
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let all<'TDoc> tableName (conn: SqliteConnection) : Task<'TDoc list> =
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use cmd = conn.CreateCommand()
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cmd.CommandText <- Query.selectFromTable tableName
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toDocumentList<'TDoc> cmd
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/// Retrieve a document by its ID
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let byId<'TKey, 'TDoc> tableName (docId: 'TKey) (conn: SqliteConnection) : Task<'TDoc option> = backgroundTask {
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use cmd = conn.CreateCommand()
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cmd.CommandText <- Query.Find.byId tableName
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addIdParam cmd docId
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let! results = toDocumentList<'TDoc> cmd
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return List.tryHead results
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}
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/// Retrieve documents via a comparison on a JSON field
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let byField<'TDoc> tableName fieldName op (value: obj) (conn: SqliteConnection) : Task<'TDoc list> =
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use cmd = conn.CreateCommand()
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cmd.CommandText <- Query.Find.byField tableName fieldName op
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addParam cmd "@field" value
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toDocumentList<'TDoc> cmd
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/// Retrieve documents via a comparison on a JSON field, returning only the first result
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let firstByField<'TDoc> tableName fieldName op (value: obj) (conn: SqliteConnection)
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: Task<'TDoc option> = backgroundTask {
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use cmd = conn.CreateCommand()
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cmd.CommandText <- $"{Query.Find.byField tableName fieldName op} LIMIT 1"
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addParam cmd "@field" value
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let! results = toDocumentList<'TDoc> cmd
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return List.tryHead results
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}
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/// Commands to update documents
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[<RequireQualifiedAccess>]
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module Update =
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/// Update an entire document
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let full tableName (docId: 'TKey) (document: 'TDoc) conn =
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executeNonQueryWithId (Query.Update.full tableName) docId document conn
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/// Update an entire document
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let fullFunc tableName (idFunc: 'TDoc -> 'TKey) (document: 'TDoc) conn =
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full tableName (idFunc document) document conn
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/// Update a partial document
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let partialById tableName (docId: 'TKey) (partial: 'TPatch) conn =
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executeNonQueryWithId (Query.Update.partialById tableName) docId partial conn
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/// Update partial documents using a comparison on a JSON field
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let partialByField tableName fieldName op (value: obj) (partial: 'TPatch) (conn: SqliteConnection) =
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use cmd = conn.CreateCommand()
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cmd.CommandText <- Query.Update.partialByField tableName fieldName op
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addParam cmd "@field" value
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addJsonParam cmd "@data" partial
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write cmd
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/// Commands to delete documents
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[<RequireQualifiedAccess>]
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module Delete =
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/// Delete a document by its ID
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let byId tableName (docId: 'TKey) conn =
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executeNonQueryWithId (Query.Delete.byId tableName) docId {||} conn
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/// Delete documents by matching a comparison on a JSON field
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let byField tableName fieldName op (value: obj) (conn: SqliteConnection) =
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use cmd = conn.CreateCommand()
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cmd.CommandText <- Query.Delete.byField tableName fieldName op
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addParam cmd "@field" value
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write cmd
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/// Commands to execute custom SQL queries
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[<RequireQualifiedAccess>]
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module Custom =
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/// Execute a query that returns a list of results
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[<CompiledName "FSharpList">]
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let list<'TDoc> query (parameters: SqliteParameter seq) (mapFunc: SqliteDataReader -> 'TDoc)
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(conn: SqliteConnection) =
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use cmd = conn.CreateCommand()
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cmd.CommandText <- query
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cmd.Parameters.AddRange parameters
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toCustomList<'TDoc> cmd mapFunc
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/// Execute a query that returns one or no results
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/// Execute a query that returns a list of results
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let List<'TDoc>(query, parameters, mapFunc: System.Func<SqliteDataReader, 'TDoc>, conn) = backgroundTask {
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let! results = list<'TDoc> query parameters mapFunc.Invoke conn
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return ResizeArray<'TDoc> results
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}
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/// Execute a query that returns one or no results (returns None if not found)
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[<CompiledName "FSharpSingle">]
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let single<'TDoc> query parameters (mapFunc: SqliteDataReader -> 'TDoc) conn = backgroundTask {
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let! results = list query parameters mapFunc conn
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return List.tryHead results
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return FSharp.Collections.List.tryHead results
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}
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/// Execute a query that returns one or no results (returns null if not found)
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let Single<'TDoc when 'TDoc: null>(
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query, parameters, mapFunc: System.Func<SqliteDataReader, 'TDoc>, conn
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) = backgroundTask {
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let! result = single<'TDoc> query parameters mapFunc.Invoke conn
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return Option.toObj result
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}
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/// Execute a query that does not return a value
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[<CompiledName "NonQuery">]
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let nonQuery query (parameters: SqliteParameter seq) (conn: SqliteConnection) =
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use cmd = conn.CreateCommand()
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cmd.CommandText <- query
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@ -272,6 +171,7 @@ module WithConn =
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write cmd
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/// Execute a query that returns a scalar value
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[<CompiledName "FSharpScalar">]
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let scalar<'T when 'T : struct> query (parameters: SqliteParameter seq) (mapFunc: SqliteDataReader -> 'T)
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(conn: SqliteConnection) = backgroundTask {
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use cmd = conn.CreateCommand()
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@ -282,6 +182,155 @@ module WithConn =
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return if isFound then mapFunc rdr else Unchecked.defaultof<'T>
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}
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/// Execute a query that returns a scalar value
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let Scalar<'T when 'T: struct>(query, parameters, mapFunc: System.Func<SqliteDataReader, 'T>, conn) =
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scalar<'T> query parameters mapFunc.Invoke conn
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/// Functions to create tables and indexes
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[<RequireQualifiedAccess>]
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module Definition =
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/// Create a document table
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[<CompiledName "EnsureTable">]
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let ensureTable name conn = backgroundTask {
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do! Custom.nonQuery (Query.Definition.ensureTable name) [] conn
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do! Custom.nonQuery (Query.Definition.ensureKey name) [] conn
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}
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/// Create an index on a document table
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[<CompiledName "EnsureIndex">]
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let ensureIndex tableName indexName fields conn =
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Custom.nonQuery (Query.Definition.ensureIndexOn tableName indexName fields) [] conn
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/// Insert a new document
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[<CompiledName "Insert">]
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let insert<'TDoc> tableName (document: 'TDoc) conn =
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Custom.nonQuery (Query.insert tableName) [ jsonParam "@data" document ] conn
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/// Save a document, inserting it if it does not exist and updating it if it does (AKA "upsert")
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[<CompiledName "Save">]
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let save<'TDoc> tableName (document: 'TDoc) conn =
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Custom.nonQuery (Query.save tableName) [ jsonParam "@data" document ] conn
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/// Commands to count documents
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[<RequireQualifiedAccess>]
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module Count =
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/// Count all documents in a table
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[<CompiledName "All">]
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let all tableName conn =
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Custom.scalar (Query.Count.all tableName) [] (_.GetInt64(0)) conn
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/// Count matching documents using a comparison on a JSON field
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[<CompiledName "ByField">]
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let byField tableName fieldName op (value: obj) conn =
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Custom.scalar (Query.Count.byField tableName fieldName op) [ fieldParam value ] (_.GetInt64(0)) conn
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/// Commands to determine if documents exist
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[<RequireQualifiedAccess>]
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module Exists =
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/// SQLite returns a 0 for not-exists and 1 for exists
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let private exists (rdr: SqliteDataReader) =
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rdr.GetInt64(0) > 0
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/// Determine if a document exists for the given ID
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[<CompiledName "ById">]
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let byId tableName (docId: 'TKey) conn =
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Custom.scalar (Query.Exists.byId tableName) [ idParam docId ] exists conn
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/// Determine if a document exists using a comparison on a JSON field
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[<CompiledName "ByField">]
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let byField tableName fieldName op (value: obj) conn =
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Custom.scalar (Query.Exists.byField tableName fieldName op) [ fieldParam value ] exists conn
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/// Commands to retrieve documents
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[<RequireQualifiedAccess>]
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module Find =
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/// Retrieve all documents in the given table
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[<CompiledName "FSharpAll">]
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let all<'TDoc> tableName conn =
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Custom.list<'TDoc> (Query.selectFromTable tableName) [] fromData<'TDoc> conn
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/// Retrieve all documents in the given table
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let All<'TDoc>(tableName, conn) =
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Custom.List(Query.selectFromTable tableName, [], fromData<'TDoc>, conn)
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/// Retrieve a document by its ID (returns None if not found)
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[<CompiledName "FSharpById">]
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let byId<'TKey, 'TDoc> tableName (docId: 'TKey) conn =
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Custom.single<'TDoc> (Query.Find.byId tableName) [ idParam docId ] fromData<'TDoc> conn
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/// Retrieve a document by its ID (returns null if not found)
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let ById<'TKey, 'TDoc when 'TDoc: null>(tableName, docId: 'TKey, conn) =
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Custom.Single<'TDoc>(Query.Find.byId tableName, [ idParam docId ], fromData<'TDoc>, conn)
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/// Retrieve documents via a comparison on a JSON field
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[<CompiledName "FSharpByField">]
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let byField<'TDoc> tableName fieldName op (value: obj) conn =
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Custom.list<'TDoc> (Query.Find.byField tableName fieldName op) [ fieldParam value ] fromData<'TDoc> conn
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/// Retrieve documents via a comparison on a JSON field
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let ByField<'TDoc>(tableName, fieldName, op, value: obj, conn) =
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Custom.List<'TDoc>(Query.Find.byField tableName fieldName op, [ fieldParam value ], fromData<'TDoc>, conn)
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/// Retrieve documents via a comparison on a JSON field, returning only the first result
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[<CompiledName "FSharpFirstByField">]
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let firstByField<'TDoc> tableName fieldName op (value: obj) conn =
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Custom.single
|
||||
$"{Query.Find.byField tableName fieldName op} LIMIT 1" [ fieldParam value ] fromData<'TDoc> conn
|
||||
|
||||
/// Retrieve documents via a comparison on a JSON field, returning only the first result
|
||||
let FirstByField<'TDoc when 'TDoc: null>(tableName, fieldName, op, value: obj, conn) =
|
||||
Custom.Single(
|
||||
$"{Query.Find.byField tableName fieldName op} LIMIT 1", [ fieldParam value ], fromData<'TDoc>, conn)
|
||||
|
||||
/// Commands to update documents
|
||||
[<RequireQualifiedAccess>]
|
||||
module Update =
|
||||
|
||||
/// Update an entire document
|
||||
[<CompiledName "Full">]
|
||||
let full tableName (docId: 'TKey) (document: 'TDoc) conn =
|
||||
Custom.nonQuery (Query.Update.full tableName) [ idParam docId; jsonParam "@data" document ] conn
|
||||
|
||||
/// Update an entire document
|
||||
[<CompiledName "FSharpFullFunc">]
|
||||
let fullFunc tableName (idFunc: 'TDoc -> 'TKey) (document: 'TDoc) conn =
|
||||
full tableName (idFunc document) document conn
|
||||
|
||||
/// Update an entire document
|
||||
let FullFunc(tableName, idFunc: System.Func<'TDoc, 'TKey>, document: 'TDoc, conn) =
|
||||
fullFunc tableName idFunc.Invoke document conn
|
||||
|
||||
/// Update a partial document
|
||||
[<CompiledName "PartialById">]
|
||||
let partialById tableName (docId: 'TKey) (partial: 'TPatch) conn =
|
||||
Custom.nonQuery (Query.Update.partialById tableName) [ idParam docId; jsonParam "@data" partial ] conn
|
||||
|
||||
/// Update partial documents using a comparison on a JSON field
|
||||
[<CompiledName "PartialByField">]
|
||||
let partialByField tableName fieldName op (value: obj) (partial: 'TPatch) (conn: SqliteConnection) =
|
||||
Custom.nonQuery
|
||||
(Query.Update.partialByField tableName fieldName op)
|
||||
[ fieldParam value; jsonParam "@data" partial ]
|
||||
conn
|
||||
|
||||
/// Commands to delete documents
|
||||
[<RequireQualifiedAccess>]
|
||||
module Delete =
|
||||
|
||||
/// Delete a document by its ID
|
||||
[<CompiledName "ById">]
|
||||
let byId tableName (docId: 'TKey) conn =
|
||||
Custom.nonQuery (Query.Delete.byId tableName) [ idParam docId ] conn
|
||||
|
||||
/// Delete documents by matching a comparison on a JSON field
|
||||
[<CompiledName "ByField">]
|
||||
let byField tableName fieldName op (value: obj) conn =
|
||||
Custom.nonQuery (Query.Delete.byField tableName fieldName op) [ fieldParam value ] conn
|
||||
|
||||
/// Functions to create tables and indexes
|
||||
[<RequireQualifiedAccess>]
|
||||
module Definition =
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user