From 03bb7619dadb30c647ce83692d4c68d959b911a9 Mon Sep 17 00:00:00 2001
From: John Rommel Estropia <rommel.estropia@gmail.com>
Date: Fri, 22 Sep 2017 00:08:01 +0900
Subject: [PATCH] added queryBuilder utilities for clause sequences

---
 Sources/ChainedClauseBuilder.swift | 51 ++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/Sources/ChainedClauseBuilder.swift b/Sources/ChainedClauseBuilder.swift
index 7bcaae8..722ceb5 100644
--- a/Sources/ChainedClauseBuilder.swift
+++ b/Sources/ChainedClauseBuilder.swift
@@ -161,6 +161,11 @@ public extension From {
         return self.fetchChain(appending: clause)
     }
     
+    public func appending<S: Sequence>(_ clauses: S) -> FetchChainBuilder<D> where S.Element: FetchClause {
+        
+        return self.fetchChain(appending: clauses)
+    }
+    
     
     // MARK: Private
     
@@ -168,6 +173,11 @@ public extension From {
         
         return .init(from: self, fetchClauses: [clause])
     }
+    
+    private func fetchChain<S: Sequence>(appending clauses: S) -> FetchChainBuilder<D> where S.Element: FetchClause {
+        
+        return .init(from: self, fetchClauses: Array(clauses))
+    }
 }
 
 public extension From where D: NSManagedObject {
@@ -293,6 +303,11 @@ public extension FetchChainBuilder {
         return self.fetchChain(appending: clause)
     }
     
+    public func appending<S: Sequence>(_ clauses: S) -> FetchChainBuilder<D> where S.Element: FetchClause {
+        
+        return self.fetchChain(appending: clauses)
+    }
+    
     
     // MARK: Private
     
@@ -303,6 +318,14 @@ public extension FetchChainBuilder {
             fetchClauses: self.fetchClauses + [clause]
         )
     }
+    
+    private func fetchChain<S: Sequence>(appending clauses: S) -> FetchChainBuilder<D> where S.Element: FetchClause {
+        
+        return .init(
+            from: self.from,
+            fetchClauses: self.fetchClauses + Array(clauses)
+        )
+    }
 }
 
 public extension QueryChainBuilder {
@@ -352,6 +375,11 @@ public extension QueryChainBuilder {
         return self.queryChain(appending: clause)
     }
     
+    public func appending<S: Sequence>(_ clauses: S) -> QueryChainBuilder<D, R> where S.Element: QueryClause {
+        
+        return self.queryChain(appending: clauses)
+    }
+    
     
     // MARK: Private
     
@@ -363,6 +391,15 @@ public extension QueryChainBuilder {
             queryClauses: self.queryClauses + [clause]
         )
     }
+    
+    private func queryChain<S: Sequence>(appending clauses: S) -> QueryChainBuilder<D, R> where S.Element: QueryClause {
+        
+        return .init(
+            from: self.from,
+            select: self.select,
+            queryClauses: self.queryClauses + Array(clauses)
+        )
+    }
 }
 
 public extension QueryChainBuilder where D: NSManagedObject {
@@ -429,6 +466,11 @@ public extension SectionMonitorChainBuilder {
         return self.sectionMonitorChain(appending: clause)
     }
     
+    public func appending<S: Sequence>(_ clauses: S) -> SectionMonitorChainBuilder<D> where S.Element: FetchClause {
+        
+        return self.sectionMonitorChain(appending: clauses)
+    }
+    
     
     // MARK: Private
     
@@ -440,4 +482,13 @@ public extension SectionMonitorChainBuilder {
             fetchClauses: self.fetchClauses + [clause]
         )
     }
+    
+    private func sectionMonitorChain<S: Sequence>(appending clauses: S) -> SectionMonitorChainBuilder<D> where S.Element: FetchClause {
+        
+        return .init(
+            from: self.from,
+            sectionBy: self.sectionBy,
+            fetchClauses: self.fetchClauses + Array(clauses)
+        )
+    }
 }