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Code Issues 95 Packages Projects Releases 10 Wiki Activity

support value querying in Objective C

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This commit is contained in:
John Rommel Estropia
2016-04-02 21:39:05 +09:00
parent b95aaf151d
commit aa32f5e158
9 changed files with 680 additions and 131 deletions
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64
Sources/Internal/NSManagedObjectContext+Querying.swift
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@@ -387,12 +387,15 @@ internal extension NSManagedObjectContext {
fetchRequest.fetchLimit = 0
selectClause.applyToFetchRequest(fetchRequest)
let selectTerms = selectClause.selectTerms
selectTerms.applyToFetchRequest(fetchRequest, owner: selectClause)
queryClauses.forEach { $0.applyToFetchRequest(fetchRequest) }
for clause in queryClauses {
clause.applyToFetchRequest(fetchRequest)
}
return self.queryValue(selectTerms, fetchRequest: fetchRequest)
}
@nonobjc
internal func queryValue<U: SelectValueResultType>(selectTerms: [SelectTerm], fetchRequest: NSFetchRequest) -> U? {
var fetchResults: [AnyObject]?
var fetchError: ErrorType?
@@ -410,9 +413,42 @@ internal extension NSManagedObjectContext {
if let fetchResults = fetchResults {
if let rawResult = fetchResults.first as? NSDictionary,
let rawObject: AnyObject = rawResult[selectClause.keyPathForFirstSelectTerm()] {
return Select<U>.ReturnType.fromResultObject(rawObject)
let rawObject: AnyObject = rawResult[selectTerms.keyPathForFirstSelectTerm()] {
return Select<U>.ReturnType.fromResultObject(rawObject)
}
return nil
}
CoreStore.log(
CoreStoreError(fetchError),
"Failed executing fetch request."
)
return nil
}
@nonobjc
internal func queryValue(selectTerms: [SelectTerm], fetchRequest: NSFetchRequest) -> AnyObject? {
var fetchResults: [AnyObject]?
var fetchError: ErrorType?
self.performBlockAndWait {
do {
fetchResults = try self.executeFetchRequest(fetchRequest)
}
catch {
fetchError = error
}
}
if let fetchResults = fetchResults {
if let rawResult = fetchResults.first as? NSDictionary,
let rawObject: AnyObject = rawResult[selectTerms.keyPathForFirstSelectTerm()] {
return rawObject
}
return nil
}
@@ -441,12 +477,14 @@ internal extension NSManagedObjectContext {
fetchRequest.fetchLimit = 0
selectClause.applyToFetchRequest(fetchRequest)
selectClause.selectTerms.applyToFetchRequest(fetchRequest, owner: selectClause)
queryClauses.forEach { $0.applyToFetchRequest(fetchRequest) }
for clause in queryClauses {
clause.applyToFetchRequest(fetchRequest)
}
return self.queryAttributes(fetchRequest)
}
@nonobjc
internal func queryAttributes(fetchRequest: NSFetchRequest) -> [[NSString: AnyObject]]? {
var fetchResults: [AnyObject]?
var fetchError: ErrorType?