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Code Issues 95 Packages Projects Releases 10 Wiki Activity

keyPath utilities for Select queries

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This commit is contained in:
John Rommel Estropia
2017-09-21 07:56:02 +09:00
parent 3e082d5ed4
commit 1bfb7451c3
12 changed files with 938 additions and 261 deletions
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29
Sources/NSManagedObjectContext+Querying.swift
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@@ -279,51 +279,50 @@ extension NSManagedObjectContext: FetchableSource, QueryableSource {
// MARK: QueryableSource
@nonobjc
public func queryValue<D, U: QueryableAttributeType>(_ from: From<D>, _ selectClause: Select<U>, _ queryClauses: QueryClause...) -> U? {
public func queryValue<D, U: QueryableAttributeType>(_ from: From<D>, _ selectClause: Select<D, U>, _ queryClauses: QueryClause...) -> U? {
return self.queryValue(from, selectClause, queryClauses)
}
@nonobjc
public func queryValue<D, U: QueryableAttributeType>(_ from: From<D>, _ selectClause: Select<U>, _ queryClauses: [QueryClause]) -> U? {
public func queryValue<D, U: QueryableAttributeType>(_ from: From<D>, _ selectClause: Select<D, U>, _ queryClauses: [QueryClause]) -> U? {
let fetchRequest = CoreStoreFetchRequest()
let storeFound = from.applyToFetchRequest(fetchRequest, context: self)
fetchRequest.fetchLimit = 0
let selectTerms = selectClause.selectTerms
selectTerms.applyToFetchRequest(fetchRequest, owner: selectClause)
selectClause.applyToFetchRequest(fetchRequest)
queryClauses.forEach { $0.applyToFetchRequest(fetchRequest) }
guard storeFound else {
return nil
}
return self.queryValue(selectTerms, fetchRequest: fetchRequest)
return self.queryValue(selectClause.selectTerms, fetchRequest: fetchRequest)
}
@nonobjc
public func queryValue<B>(_ clauseChain: B) -> B.ResultType? where B : QueryChainableBuilderType, B.ResultType : QueryableAttributeType {
public func queryValue<B>(_ clauseChain: B) -> B.ResultType? where B: QueryChainableBuilderType, B.ResultType: QueryableAttributeType {
return self.queryValue(clauseChain.from, clauseChain.select, clauseChain.queryClauses)
}
@nonobjc
public func queryAttributes<D>(_ from: From<D>, _ selectClause: Select<NSDictionary>, _ queryClauses: QueryClause...) -> [[String: Any]]? {
public func queryAttributes<D>(_ from: From<D>, _ selectClause: Select<D, NSDictionary>, _ queryClauses: QueryClause...) -> [[String: Any]]? {
return self.queryAttributes(from, selectClause, queryClauses)
}
@nonobjc
public func queryAttributes<D>(_ from: From<D>, _ selectClause: Select<NSDictionary>, _ queryClauses: [QueryClause]) -> [[String: Any]]? {
public func queryAttributes<D>(_ from: From<D>, _ selectClause: Select<D, NSDictionary>, _ queryClauses: [QueryClause]) -> [[String: Any]]? {
let fetchRequest = CoreStoreFetchRequest()
let storeFound = from.applyToFetchRequest(fetchRequest, context: self)
fetchRequest.fetchLimit = 0
selectClause.selectTerms.applyToFetchRequest(fetchRequest, owner: selectClause)
selectClause.applyToFetchRequest(fetchRequest)
queryClauses.forEach { $0.applyToFetchRequest(fetchRequest) }
guard storeFound else {
@@ -498,7 +497,7 @@ internal extension NSManagedObjectContext {
// MARK: Querying
@nonobjc
internal func queryValue<U: QueryableAttributeType>(_ selectTerms: [SelectTerm], fetchRequest: NSFetchRequest<NSFetchRequestResult>) -> U? {
internal func queryValue<D, U: QueryableAttributeType>(_ selectTerms: [SelectTerm<D>], fetchRequest: NSFetchRequest<NSFetchRequestResult>) -> U? {
var fetchResults: [Any]?
var fetchError: Error?
@@ -516,9 +515,9 @@ internal extension NSManagedObjectContext {
if let fetchResults = fetchResults {
if let rawResult = fetchResults.first as? NSDictionary,
let rawObject = rawResult[selectTerms.keyPathForFirstSelectTerm()] as? U.QueryableNativeType {
let rawObject = rawResult[selectTerms.first!.keyPathString] as? U.QueryableNativeType {
return Select<U>.ReturnType.cs_fromQueryableNativeType(rawObject)
return Select<D, U>.ReturnType.cs_fromQueryableNativeType(rawObject)
}
return nil
}
@@ -531,7 +530,7 @@ internal extension NSManagedObjectContext {
}
@nonobjc
internal func queryValue(_ selectTerms: [SelectTerm], fetchRequest: NSFetchRequest<NSFetchRequestResult>) -> Any? {
internal func queryValue<D>(_ selectTerms: [SelectTerm<D>], fetchRequest: NSFetchRequest<NSFetchRequestResult>) -> Any? {
var fetchResults: [Any]?
var fetchError: Error?
@@ -549,7 +548,7 @@ internal extension NSManagedObjectContext {
if let fetchResults = fetchResults {
if let rawResult = fetchResults.first as? NSDictionary,
let rawObject = rawResult[selectTerms.keyPathForFirstSelectTerm()] {
let rawObject = rawResult[selectTerms.first!.keyPathString] {
return rawObject
}
@@ -581,7 +580,7 @@ internal extension NSManagedObjectContext {
}
if let fetchResults = fetchResults {
return Select<NSDictionary>.ReturnType.cs_fromQueryResultsNativeType(fetchResults)
return NSDictionary.cs_fromQueryResultsNativeType(fetchResults)
}
CoreStore.log(