Add FullTextSearch::IssueQueryAnySearchable module for multi-field AND searches

init.rb

@@ -91,6 +91,10 @@ class << Setting
 FullTextSearch::TagType
 FullTextSearch::Type
 
+if IssueQuery.method_defined?(:sql_for_any_searchable_field)
+  IssueQuery.prepend(FullTextSearch::Hooks::IssueQueryAnySearchable)
+end
+
 # Support plugins
 if defined?(WikiExtensionsTagRelation)
   # Wiki Extensions tags

lib/full_text_search/hooks/issue_query_any_searchable.rb

@@ -0,0 +1,10 @@
+module FullTextSearch
+  module Hooks
+    module IssueQueryAnySearchable
+      def sql_for_any_searchable_field(field, operator, value)
+        # TODO: Implement AND searches across multiple fields.
+        super(field, operator, value)
+      end
+    end
+  end
+end

test/unit/full_text_search/issue_query_any_searchable_test.rb

@@ -0,0 +1,36 @@
+require File.expand_path("../../../test_helper", __FILE__)
+
+module FullTextSearch
+  class IssueQueryAnySearchableTest < ActiveSupport::TestCase
+    setup do
+      unless IssueQuery.method_defined?(:sql_for_any_searchable_field)
+        skip("Required feature 'sql_for_any_searchable_field' does not exist.")
+      end
+    end
+
+    def test_or_one_word
+      Issue.destroy_all
+      subject_groonga = Issue.generate!(subject: "Groonga")
+      description_groonga = Issue.generate!(description: "Groonga")
+      without_groonga = Issue.generate!(subject: "no-keyword",
+                                        description: "no-keyword")
+      journal_groonga = Issue.generate!.journals.create!(notes: "Groonga")
+      query = IssueQuery.new(
+        :name => "_",
+        :filters => {
+          "any_searchable" => {
+            :operator => "~",
+            :values => ["Groonga"]
+          }
+        },
+        :sort_criteria => [["id", "asc"]]
+      )
+      expected_issues = [
+        subject_groonga,
+        description_groonga,
+        journal_groonga.issue
+      ]
+      assert_equal(expected_issues, query.issues)
+    end
+  end
+end