From 0690fb19152d035226efe247b88c7e600c882e1f Mon Sep 17 00:00:00 2001
From: Brian Underwood <ml+github@semi-sentient.com>
Date: Thu, 12 May 2016 21:32:45 +0100
Subject: [PATCH] Add detach_delete method

---
 CHANGELOG.md                       |  6 ++++++
 lib/neo4j-core/query.rb            |  6 +++++-
 lib/neo4j-core/query_clauses.rb    |  4 ++++
 lib/neo4j-core/version.rb          |  2 +-
 spec/neo4j-core/unit/query_spec.rb | 20 ++++++++++++++++++++
 5 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9240641c..8cf8c749 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,12 @@ All notable changes to this project will be documented in this file.
 This file should follow the standards specified on [http://keepachangelog.com/]
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [6.1.4] - 05-12-2016
+
+### Added
+
+- `detach_delete` method for `Query` API for `DETACH DELETE` clause introduced in Neo4j 2.3
+
 ## [6.1.3] - 04-28-2016
 
 ### Fixed
diff --git a/lib/neo4j-core/query.rb b/lib/neo4j-core/query.rb
index 460d534f..49841e63 100644
--- a/lib/neo4j-core/query.rb
+++ b/lib/neo4j-core/query.rb
@@ -154,7 +154,11 @@ def inspect
       # DELETE clause
       # @return [Query]
 
-      METHODS = %w(start match optional_match using where create create_unique merge set on_create_set on_match_set remove unwind delete with return order skip limit)
+      # @method detach_delete *args
+      # DETACH DELETE clause
+      # @return [Query]
+
+      METHODS = %w(start match optional_match using where create create_unique merge set on_create_set on_match_set remove unwind delete detach_delete with return order skip limit)
       BREAK_METHODS = %(with)
 
       CLAUSIFY_CLAUSE = proc { |method| const_get(method.to_s.split('_').map(&:capitalize).join + 'Clause') }
diff --git a/lib/neo4j-core/query_clauses.rb b/lib/neo4j-core/query_clauses.rb
index 45cd920e..67a912ec 100644
--- a/lib/neo4j-core/query_clauses.rb
+++ b/lib/neo4j-core/query_clauses.rb
@@ -479,6 +479,10 @@ def clause_color
         end
       end
 
+      class DetachDeleteClause < DeleteClause
+        KEYWORD = 'DETACH DELETE'
+      end
+
       class OrderClause < Clause
         KEYWORD = 'ORDER BY'
 
diff --git a/lib/neo4j-core/version.rb b/lib/neo4j-core/version.rb
index cdecbceb..17b911cc 100644
--- a/lib/neo4j-core/version.rb
+++ b/lib/neo4j-core/version.rb
@@ -1,5 +1,5 @@
 module Neo4j
   module Core
-    VERSION = '6.1.3'
+    VERSION = '6.1.4'
   end
 end
diff --git a/spec/neo4j-core/unit/query_spec.rb b/spec/neo4j-core/unit/query_spec.rb
index 325d470b..1bdf084d 100644
--- a/spec/neo4j-core/unit/query_spec.rb
+++ b/spec/neo4j-core/unit/query_spec.rb
@@ -710,6 +710,26 @@ def self.it_generates(cypher, params = {})
     end
   end
 
+  # DETACH DELETE
+
+  describe '#delete' do
+    describe ".detach_delete('n')" do
+      it_generates 'DETACH DELETE n'
+    end
+
+    describe '.detach_delete(:n)' do
+      it_generates 'DETACH DELETE n'
+    end
+
+    describe ".detach_delete('n', :o)" do
+      it_generates 'DETACH DELETE n, o'
+    end
+
+    describe ".detach_delete(['n', :o])" do
+      it_generates 'DETACH DELETE n, o'
+    end
+  end
+
   # SET
 
   describe '#set_props' do