Files
CoreStore-JohnEstropia/Sources/SectionBy.swift

300 lines
11 KiB
Swift

//
// SectionBy.swift
// CoreStore
//
// Copyright © 2018 John Rommel Estropia
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//
import Foundation
import CoreData
// MARK: - SectionBy
/**
The `SectionBy` clause indicates the key path to use to group the `ListMonitor` objects into sections. An optional closure can also be provided to transform the value into an appropriate section index title:
```
let monitor = dataStack.monitorSectionedList(
From<Person>(),
SectionBy("age") { "Age \($0)" },
OrderBy(.ascending("lastName"))
)
```
*/
public struct SectionBy<O: DynamicObject> {
/**
Initializes a `SectionBy` clause with the key path to use to group `ListMonitor` objects into sections
- parameter sectionKeyPath: the key path to use to group the objects into sections
*/
public init(_ sectionKeyPath: KeyPathString) {
self.init(
sectionKeyPath,
sectionIndexTransformer: { _ in nil }
)
}
/**
Initializes a `SectionBy` clause with the key path to use to group `ListMonitor` objects into sections, and a closure to transform the value for the key path to an appropriate section index title
- Important: Some utilities (such as `ListMonitor`s) may keep `SectionBy`s in memory and may thus introduce retain cycles if reference captures are not handled properly.
- parameter sectionKeyPath: the key path to use to group the objects into sections
- parameter sectionIndexTransformer: a closure to transform the value for the key path to an appropriate section index title
*/
public init(
_ sectionKeyPath: KeyPathString,
sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?
) {
self.sectionKeyPath = sectionKeyPath
self.sectionIndexTransformer = sectionIndexTransformer
}
// MARK: Internal
internal let sectionKeyPath: KeyPathString
internal let sectionIndexTransformer: (_ sectionName: String?) -> String?
}
// MARK: - SectionBy where O: NSManagedObject
extension SectionBy where O: NSManagedObject {
/**
Initializes a `SectionBy` clause with the key path to use to group `ListMonitor` objects into sections
- parameter sectionKeyPath: the key path to use to group the objects into sections
*/
public init<T>(_ sectionKeyPath: KeyPath<O, T>) {
self.init(
sectionKeyPath,
sectionIndexTransformer: { _ in nil }
)
}
/**
Initializes a `SectionBy` clause with the key path to use to group `ListMonitor` objects into sections, and a closure to transform the value for the key path to an appropriate section index title
- Important: Some utilities (such as `ListMonitor`s) may keep `SectionBy`s in memory and may thus introduce retain cycles if reference captures are not handled properly.
- parameter sectionKeyPath: the key path to use to group the objects into sections
- parameter sectionIndexTransformer: a closure to transform the value for the key path to an appropriate section index title
*/
public init<T>(
_ sectionKeyPath: KeyPath<O, T>,
sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?
) {
self.init(
sectionKeyPath._kvcKeyPathString!,
sectionIndexTransformer: sectionIndexTransformer
)
}
}
// MARK: - SectionBy where O: CoreStoreObject
extension SectionBy where O: CoreStoreObject {
/**
Initializes a `SectionBy` clause with the key path to use to group `ListMonitor` objects into sections
- parameter sectionKeyPath: the key path to use to group the objects into sections
*/
public init<T>(_ sectionKeyPath: KeyPath<O, FieldContainer<O>.Stored<T>>) {
self.init(
sectionKeyPath,
sectionIndexTransformer: { _ in nil }
)
}
/**
Initializes a `SectionBy` clause with the key path to use to group `ListMonitor` objects into sections
- parameter sectionKeyPath: the key path to use to group the objects into sections
*/
public init<T>(_ sectionKeyPath: KeyPath<O, FieldContainer<O>.Virtual<T>>) {
self.init(
sectionKeyPath,
sectionIndexTransformer: { _ in nil }
)
}
/**
Initializes a `SectionBy` clause with the key path to use to group `ListMonitor` objects into sections
- parameter sectionKeyPath: the key path to use to group the objects into sections
*/
public init<T>(_ sectionKeyPath: KeyPath<O, FieldContainer<O>.Coded<T>>) {
self.init(
sectionKeyPath,
sectionIndexTransformer: { _ in nil }
)
}
/**
Initializes a `SectionBy` clause with the key path to use to group `ListMonitor` objects into sections, and a closure to transform the value for the key path to an appropriate section index title
- Important: Some utilities (such as `ListMonitor`s) may keep `SectionBy`s in memory and may thus introduce retain cycles if reference captures are not handled properly.
- parameter sectionKeyPath: the key path to use to group the objects into sections
- parameter sectionIndexTransformer: a closure to transform the value for the key path to an appropriate section index title
*/
public init<T>(
_ sectionKeyPath: KeyPath<O, FieldContainer<O>.Stored<T>>,
sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?
) {
self.init(
O.meta[keyPath: sectionKeyPath].keyPath,
sectionIndexTransformer: sectionIndexTransformer
)
}
/**
Initializes a `SectionBy` clause with the key path to use to group `ListMonitor` objects into sections, and a closure to transform the value for the key path to an appropriate section index title
- Important: Some utilities (such as `ListMonitor`s) may keep `SectionBy`s in memory and may thus introduce retain cycles if reference captures are not handled properly.
- parameter sectionKeyPath: the key path to use to group the objects into sections
- parameter sectionIndexTransformer: a closure to transform the value for the key path to an appropriate section index title
*/
public init<T>(
_ sectionKeyPath: KeyPath<O, FieldContainer<O>.Virtual<T>>,
sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?
) {
self.init(
O.meta[keyPath: sectionKeyPath].keyPath,
sectionIndexTransformer: sectionIndexTransformer
)
}
/**
Initializes a `SectionBy` clause with the key path to use to group `ListMonitor` objects into sections, and a closure to transform the value for the key path to an appropriate section index title
- Important: Some utilities (such as `ListMonitor`s) may keep `SectionBy`s in memory and may thus introduce retain cycles if reference captures are not handled properly.
- parameter sectionKeyPath: the key path to use to group the objects into sections
- parameter sectionIndexTransformer: a closure to transform the value for the key path to an appropriate section index title
*/
public init<T>(
_ sectionKeyPath: KeyPath<O, FieldContainer<O>.Coded<T>>,
sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?
) {
self.init(
O.meta[keyPath: sectionKeyPath].keyPath,
sectionIndexTransformer: sectionIndexTransformer
)
}
}
// MARK: - Deprecated
@available(*, deprecated, message: """
Legacy `Value.*`, `Transformable.*`, and `Relationship.*` declarations will soon be obsoleted. Please migrate your models and stores to new models that use `@Field.*` property wrappers. See: https://github.com/JohnEstropia/CoreStore?tab=readme-ov-file#new-field-property-wrapper-syntax
""")
extension SectionBy {
public init<T>(_ sectionKeyPath: KeyPath<O, ValueContainer<O>.Required<T>>) {
self.init(
sectionKeyPath,
sectionIndexTransformer: { _ in nil }
)
}
public init<T>(_ sectionKeyPath: KeyPath<O, ValueContainer<O>.Optional<T>>) {
self.init(
sectionKeyPath,
sectionIndexTransformer: { _ in nil }
)
}
public init<T>(_ sectionKeyPath: KeyPath<O, TransformableContainer<O>.Required<T>>) {
self.init(
sectionKeyPath,
sectionIndexTransformer: { _ in nil }
)
}
public init<T>(_ sectionKeyPath: KeyPath<O, TransformableContainer<O>.Optional<T>>) {
self.init(
sectionKeyPath,
sectionIndexTransformer: { _ in nil }
)
}
public init<T>(
_ sectionKeyPath: KeyPath<O, ValueContainer<O>.Required<T>>,
sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?
) {
self.init(
O.meta[keyPath: sectionKeyPath].keyPath,
sectionIndexTransformer: sectionIndexTransformer
)
}
public init<T>(
_ sectionKeyPath: KeyPath<O, ValueContainer<O>.Optional<T>>,
sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?
) {
self.init(
O.meta[keyPath: sectionKeyPath].keyPath,
sectionIndexTransformer: sectionIndexTransformer
)
}
public init<T>(
_ sectionKeyPath: KeyPath<O, TransformableContainer<O>.Required<T>>,
sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?
) {
self.init(
O.meta[keyPath: sectionKeyPath].keyPath,
sectionIndexTransformer: sectionIndexTransformer
)
}
public init<T>(
_ sectionKeyPath: KeyPath<O, TransformableContainer<O>.Optional<T>>,
sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?
) {
self.init(
O.meta[keyPath: sectionKeyPath].keyPath,
sectionIndexTransformer: sectionIndexTransformer
)
}
}