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Create and use a DatabaseRelatedObjectsTable protocol, which clarifies the relationships between different table types.

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This commit is contained in:
Brent Simmons
2017-09-02 10:11:19 -07:00
parent a00ac9c2ac
commit b783d1c062
9 changed files with 74 additions and 45 deletions
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4
Frameworks/RSDatabase/RSDatabase/DatabaseLookupTable.swift
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@@ -18,10 +18,10 @@ public final class DatabaseLookupTable {
private let objectIDKey: String
private let relatedObjectIDKey: String
private let relationshipName: String
private let relatedTable: DatabaseTable
private let relatedTable: DatabaseRelatedObjectsTable
private let cache: DatabaseLookupTableCache
public init(name: String, objectIDKey: String, relatedObjectIDKey: String, relatedTable: DatabaseTable, relationshipName: String) {
public init(name: String, objectIDKey: String, relatedObjectIDKey: String, relatedTable: DatabaseRelatedObjectsTable, relationshipName: String) {
self.name = name
self.objectIDKey = objectIDKey

25
Frameworks/RSDatabase/RSDatabase/DatabaseRelatedObjectTable.swift Normal file
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@@ -0,0 +1,25 @@
//
// DatabaseRelatedObjectsTable.swift
// RSDatabase
//
// Created by Brent Simmons on 9/2/17.
// Copyright © 2017 Ranchero Software, LLC. All rights reserved.
//
import Foundation
public protocol DatabaseRelatedObjectsTable: DatabaseTable {
var databaseIDKey: String { get}
func fetchObjectsWithIDs(_ databaseIDs: Set<String>, in database: FMDatabase) -> [DatabaseObject]
func objectsWithResultSet(_ resultSet: FMResultSet) -> [DatabaseObject]
func objectWithRow(_ row: FMResultSet) -> DatabaseObject?
func save(_ objects: [DatabaseObject], in database: FMDatabase)
}
public extension DatabaseRelatedObjectsTable {
}

38
Frameworks/RSDatabase/RSDatabase/DatabaseRelatedObjectsTable.swift Normal file
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@@ -0,0 +1,38 @@
//
// DatabaseRelatedObjectsTable.swift
// RSDatabase
//
// Created by Brent Simmons on 9/2/17.
// Copyright © 2017 Ranchero Software, LLC. All rights reserved.
//
import Foundation
public protocol DatabaseRelatedObjectsTable: DatabaseTable {
var databaseIDKey: String { get}
func fetchObjectsWithIDs(_ databaseIDs: Set<String>, in database: FMDatabase) -> [DatabaseObject]
func objectsWithResultSet(_ resultSet: FMResultSet) -> [DatabaseObject]
func objectWithRow(_ row: FMResultSet) -> DatabaseObject?
func save(_ objects: [DatabaseObject], in database: FMDatabase)
}
public extension DatabaseRelatedObjectsTable {
// MARK: Default implementations
func fetchObjectsWithIDs(_ databaseIDs: Set<String>, in database: FMDatabase) -> [DatabaseObject] {
guard let resultSet = selectRowsWhere(key: databaseIDKey, inValues: Array(databaseIDs), in: database) else {
return [DatabaseObject]()
}
return objectsWithResultSet(resultSet)
}
func objectsWithResultSet(_ resultSet: FMResultSet) -> [DatabaseObject] {
return resultSet.flatMap(objectWithRow)
}
}