mirror of
https://github.com/JohnEstropia/CoreStore.git
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421 lines
13 KiB
Swift
421 lines
13 KiB
Swift
//
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// CoreStoreObject+Querying.swift
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// CoreStore
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//
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// Copyright © 2017 John Rommel Estropia
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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import CoreData
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import Foundation
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// MARK: - DynamicObject
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public extension DynamicObject where Self: CoreStoreObject {
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/**
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Extracts the keyPath string from a `CoreStoreObject.Value` property.
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```
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let keyPath: String = Person.keyPath { $0.nickname }
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```
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*/
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public static func keyPath<O, V>(_ attribute: (Self) -> ValueContainer<O>.Required<V>) -> String {
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return attribute(self.meta).keyPath
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}
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/**
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Extracts the keyPath string from a `CoreStoreObject.Value` property.
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```
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let keyPath: String = Person.keyPath { $0.nickname }
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```
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*/
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public static func keyPath<O, V>(_ attribute: (Self) -> ValueContainer<O>.Optional<V>) -> String {
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return attribute(self.meta).keyPath
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}
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/**
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Extracts the keyPath string from a `CoreStoreObject.Relationship` property.
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```
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let keyPath: String = Person.keyPath { $0.pets }
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```
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*/
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public static func keyPath<O, D>(_ relationship: (Self) -> RelationshipContainer<O>.ToOne<D>) -> String {
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return relationship(self.meta).keyPath
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}
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/**
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Extracts the keyPath string from a `CoreStoreObject.Relationship` property.
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```
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let keyPath: String = Person.keyPath { $0.pets }
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```
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*/
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public static func keyPath<O, D>(_ relationship: (Self) -> RelationshipContainer<O>.ToManyOrdered<D>) -> String {
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return relationship(self.meta).keyPath
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}
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/**
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Extracts the keyPath string from a `CoreStoreObject.Relationship` property.
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```
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let keyPath: String = Person.keyPath { $0.pets }
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```
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*/
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public static func keyPath<O, D>(_ relationship: (Self) -> RelationshipContainer<O>.ToManyUnordered<D>) -> String {
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return relationship(self.meta).keyPath
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.nickname == "John" })
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```
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*/
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public static func `where`(_ condition: (Self) -> Where) -> Where {
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return condition(self.meta)
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}
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/**
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Creates an `OrderBy` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchAll(From<Person>(), Person.orderBy(ascending: { $0.age }))
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```
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*/
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public static func orderBy<O, V>(ascending attribute: (Self) -> ValueContainer<O>.Required<V>) -> OrderBy {
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return OrderBy(.ascending(attribute(self.meta).keyPath))
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}
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/**
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Creates an `OrderBy` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchAll(From<Person>(), Person.orderBy(ascending: { $0.age }))
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```
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*/
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public static func orderBy<O, V>(ascending attribute: (Self) -> ValueContainer<O>.Optional<V>) -> OrderBy {
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return OrderBy(.ascending(attribute(self.meta).keyPath))
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}
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/**
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Creates an `OrderBy` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchAll(From<Person>(), Person.orderBy(descending: { $0.age }))
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```
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*/
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public static func orderBy<O, V>(descending attribute: (Self) -> ValueContainer<O>.Required<V>) -> OrderBy {
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return OrderBy(.descending(attribute(self.meta).keyPath))
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}
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/**
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Creates an `OrderBy` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchAll(From<Person>(), Person.orderBy(descending: { $0.age }))
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```
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*/
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public static func orderBy<O, V>(descending attribute: (Self) -> ValueContainer<O>.Optional<V>) -> OrderBy {
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return OrderBy(.descending(attribute(self.meta).keyPath))
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}
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// MARK: Deprecated
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@available(*, deprecated, renamed: "orderBy(ascending:)")
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public static func ascending<O, V>(_ attribute: (Self) -> ValueContainer<O>.Optional<V>) -> OrderBy {
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return OrderBy(.ascending(attribute(self.meta).keyPath))
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}
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@available(*, deprecated, renamed: "orderBy(descending:)")
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public static func descending<O, V>(_ attribute: (Self) -> ValueContainer<O>.Optional<V>) -> OrderBy {
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return OrderBy(.descending(attribute(self.meta).keyPath))
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}
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}
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// MARK: - ValueContainer.Required
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public extension ValueContainer.Required {
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/**
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Creates a `Where` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.nickname == "John" })
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```
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*/
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@inline(__always)
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public static func == (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
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return Where(attribute.keyPath, isEqualTo: value)
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.nickname != "John" })
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```
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*/
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@inline(__always)
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public static func != (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
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return !Where(attribute.keyPath, isEqualTo: value)
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.age < 20 })
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```
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*/
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@inline(__always)
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public static func < (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
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return Where("%K < %@", attribute.keyPath, value)
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.age > 20 })
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```
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*/
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@inline(__always)
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public static func > (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
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return Where("%K > %@", attribute.keyPath, value)
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.age <= 20 })
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```
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*/
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@inline(__always)
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public static func <= (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
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return Where("%K <= %@", attribute.keyPath, value)
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.age >= 20 })
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```
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*/
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@inline(__always)
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public static func >= (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
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return Where("%K >= %@", attribute.keyPath, value)
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Value` property.
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```
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let dog = CoreStore.fetchOne(From<Dog>(), Dog.where { ["Pluto", "Snoopy", "Scooby"] ~= $0.nickname })
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```
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*/
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@inline(__always)
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public static func ~= <S: Sequence>(_ sequence: S, _ attribute: ValueContainer<O>.Required<V>) -> Where where S.Iterator.Element == V {
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return Where(attribute.keyPath, isMemberOf: sequence)
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}
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}
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// MARK: - ValueContainer.Optional
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public extension ValueContainer.Optional {
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/**
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Creates a `Where` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.nickname == "John" })
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```
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*/
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@inline(__always)
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public static func == (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where {
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return Where(attribute.keyPath, isEqualTo: value)
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.nickname != "John" })
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```
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*/
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@inline(__always)
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public static func != (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where {
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return !Where(attribute.keyPath, isEqualTo: value)
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.age < 20 })
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```
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*/
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@inline(__always)
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public static func < (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where {
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if let value = value {
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return Where("%K < %@", attribute.keyPath, value)
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}
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else {
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return Where("%K < nil", attribute.keyPath)
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}
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.age > 20 })
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```
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*/
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@inline(__always)
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public static func > (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where {
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if let value = value {
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return Where("%K > %@", attribute.keyPath, value)
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}
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else {
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return Where("%K > nil", attribute.keyPath)
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}
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.age <= 20 })
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```
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*/
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@inline(__always)
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public static func <= (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where {
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if let value = value {
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return Where("%K <= %@", attribute.keyPath, value)
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}
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else {
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return Where("%K <= nil", attribute.keyPath)
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}
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Value` property.
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```
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let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.age >= 20 })
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```
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*/
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@inline(__always)
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public static func >= (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where {
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if let value = value {
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return Where("%K >= %@", attribute.keyPath, value)
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}
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else {
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return Where("%K >= nil", attribute.keyPath)
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}
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Value` property.
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```
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let dog = CoreStore.fetchOne(From<Dog>(), Dog.where { ["Pluto", "Snoopy", "Scooby"] ~= $0.nickname })
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```
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*/
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@inline(__always)
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public static func ~= <S: Sequence>(_ sequence: S, _ attribute: ValueContainer<O>.Optional<V>) -> Where where S.Iterator.Element == V {
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return Where(attribute.keyPath, isMemberOf: sequence)
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}
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}
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// MARK: - RelationshipContainer.ToOne
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public extension RelationshipContainer.ToOne {
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/**
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Creates a `Where` clause from a `CoreStoreObject.Relationship` property.
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```
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let dog = CoreStore.fetchOne(From<Dog>(), Dog.where { $0.master == me })
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```
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*/
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@inline(__always)
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public static func == (_ relationship: RelationshipContainer<O>.ToOne<D>, _ object: D?) -> Where {
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return Where(relationship.keyPath, isEqualTo: object)
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Relationship` property.
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```
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let dog = CoreStore.fetchOne(From<Dog>(), Dog.where { $0.master != me })
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```
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*/
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@inline(__always)
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public static func != (_ relationship: RelationshipContainer<O>.ToOne<D>, _ object: D?) -> Where {
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return !Where(relationship.keyPath, isEqualTo: object)
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Relationship` property.
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```
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let dog = CoreStore.fetchOne(From<Dog>(), Dog.where { $0.master ~= me })
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```
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*/
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@inline(__always)
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public static func ~= (_ relationship: RelationshipContainer<O>.ToOne<D>, _ object: D?) -> Where {
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return Where(relationship.keyPath, isEqualTo: object)
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}
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/**
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Creates a `Where` clause from a `CoreStoreObject.Relationship` property.
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```
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let dog = CoreStore.fetchOne(From<Dog>(), Dog.where { [john, joe, bob] ~= $0.master })
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```
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*/
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@inline(__always)
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public static func ~= <S: Sequence>(_ sequence: S, _ relationship: RelationshipContainer<O>.ToOne<D>) -> Where where S.Iterator.Element == D {
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return Where(relationship.keyPath, isMemberOf: sequence)
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}
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}
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