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Merge pull request #19 from moneymanagerex/re_protocol
refactor ModelProtocol, RepositoryProtocol
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,5 @@ | ||
| // | ||
| // Asset.swift | ||
| // EnumCollateNoCase.swift | ||
| // MMEX | ||
| // | ||
| // Created 2024-09-22 by George Ef ([email protected]) | ||
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|
||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| // | ||
| // ModelProtocal.swift | ||
| // MMEX | ||
| // | ||
| // Created 2024-09-22 by George Ef ([email protected]) | ||
| // | ||
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| import Foundation | ||
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| protocol ModelProtocol { | ||
| static var modelName: String { get } | ||
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| var id: Int64 { get set } | ||
| func shortDesc() -> String | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| // | ||
| // RepositoryProtocaol.swift | ||
| // MMEX | ||
| // | ||
| // Created 2024-09-22 by George Ef ([email protected]) | ||
| // | ||
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| import Foundation | ||
| import SQLite | ||
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| protocol RepositoryProtocol { | ||
| associatedtype RepositoryItem: ModelProtocol | ||
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| var db: Connection? { get } | ||
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| static var repositoryName: String { get } | ||
| static var repositoryTable: SQLite.Table { get } | ||
| static func selectQuery(from table: SQLite.Table) -> SQLite.Table | ||
| static func selectResult(_ row: SQLite.Row) -> RepositoryItem | ||
| static var col_id: SQLite.Expression<Int64> { get } | ||
| static func itemSetters(_ item: RepositoryItem) -> [SQLite.Setter] | ||
| } | ||
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| extension RepositoryProtocol { | ||
| func pluck(table: SQLite.Table, key: String) -> RepositoryItem? { | ||
| guard let db else { return nil } | ||
| do { | ||
| if let row = try db.pluck(Self.selectQuery(from: table)) { | ||
| let item = Self.selectResult(row) | ||
| print("Successfull search for \(key) in \(Self.repositoryName): \(item.shortDesc())") | ||
| return item | ||
| } | ||
| else { | ||
| print("Unsuccefull search for \(key) in \(Self.repositoryName)") | ||
| return nil | ||
| } | ||
| } catch { | ||
| print("Failed search for \(key) in \(Self.repositoryName): \(error)") | ||
| return nil | ||
| } | ||
| } | ||
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| func select(table: SQLite.Table) -> [RepositoryItem] { | ||
| guard let db else { return [] } | ||
| do { | ||
| var results: [RepositoryItem] = [] | ||
| for row in try db.prepare(Self.selectQuery(from: table)) { | ||
| results.append(Self.selectResult(row)) | ||
| } | ||
| print("Successfull select in \(Self.repositoryName): \(results.count)") | ||
| return results | ||
| } catch { | ||
| print("Failed select in \(Self.repositoryName): \(error)") | ||
| return [] | ||
| } | ||
| } | ||
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| func insert(_ item: inout RepositoryItem) -> Bool { | ||
| guard let db else { return false } | ||
| do { | ||
| let query = Self.repositoryTable | ||
| .insert(Self.itemSetters(item)) | ||
| let rowid = try db.run(query) | ||
| item.id = rowid | ||
| print("Successfull insert in \(RepositoryItem.modelName): \(item.shortDesc())") | ||
| return true | ||
| } catch { | ||
| print("Failed insert in \(RepositoryItem.modelName): \(error)") | ||
| return false | ||
| } | ||
| } | ||
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| func update(_ item: RepositoryItem) -> Bool { | ||
| guard let db else { return false } | ||
| do { | ||
| let query = Self.repositoryTable | ||
| .filter(Self.col_id == item.id) | ||
| .update(Self.itemSetters(item)) | ||
| try db.run(query) | ||
| print("Successfull update in \(RepositoryItem.modelName): \(item.shortDesc())") | ||
| return true | ||
| } catch { | ||
| print("Failed update in \(RepositoryItem.modelName): \(error)") | ||
| return false | ||
| } | ||
| } | ||
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| func delete(_ item: RepositoryItem) -> Bool { | ||
| guard let db else { return false } | ||
| do { | ||
| let query = Self.repositoryTable | ||
| .filter(Self.col_id == item.id) | ||
| .delete() | ||
| try db.run(query) | ||
| print("Successfull delete in \(RepositoryItem.modelName): \(item.shortDesc())") | ||
| return true | ||
| } catch { | ||
| print("Failed delete in \(RepositoryItem.modelName): \(error)") | ||
| return false | ||
| } | ||
| } | ||
| } |
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