From a487eb57cd47eb4bef604c1d11d006601dcfe978 Mon Sep 17 00:00:00 2001
From: Raymond Feng <raymond@strongloop.com>
Date: Tue, 17 Jun 2014 23:19:28 -0700
Subject: [PATCH] Add like/nlike support for memory connector

---
 lib/connectors/memory.js | 22 +++++++++-
 test/memory.test.js      | 93 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 114 insertions(+), 1 deletion(-)

diff --git a/lib/connectors/memory.js b/lib/connectors/memory.js
index de479c83..e86d7d27 100644
--- a/lib/connectors/memory.js
+++ b/lib/connectors/memory.js
@@ -363,8 +363,12 @@ function applyFilter(filter) {
     return pass;
   }
 
+  function replaceAll(string, find, replace) {
+    return string.replace(new RegExp(find, 'g'), replace);
+  }
+
   function test(example, value) {
-    if (typeof value === 'string' && example && example.constructor.name === 'RegExp') {
+    if (typeof value === 'string' && (example instanceof RegExp)) {
       return value.match(example);
     }
     if (example === undefined || value === undefined) {
@@ -386,6 +390,22 @@ function applyFilter(filter) {
         return false;
       }
 
+      if (example.like || example.nlike) {
+
+        var like = example.like || example.nlike;
+        if (typeof like === 'string') {
+          like = replaceAll(like, '%', '.*');
+          like = replaceAll(like, '_', '.');
+        }
+        if (example.like) {
+          return !!new RegExp(like).test(value);
+        }
+
+        if (example.nlike) {
+          return !new RegExp(like).test(value);
+        }
+      }
+
       if (testInEquality(example, value)) {
         return true;
       }
diff --git a/test/memory.test.js b/test/memory.test.js
index 4c613270..b98462a1 100644
--- a/test/memory.test.js
+++ b/test/memory.test.js
@@ -4,6 +4,7 @@ var path = require('path');
 var fs = require('fs');
 var assert = require('assert');
 var async = require('async');
+var should = require('./init.js');
 
 describe('Memory connector', function () {
   var file = path.join(__dirname, 'memory.json');
@@ -91,5 +92,97 @@ describe('Memory connector', function () {
     });
 
   });
+
+  describe('Query for memory connector', function () {
+    var ds = new DataSource({
+      connector: 'memory'
+    });
+
+    var User = ds.define('User', {
+      seq: {type: Number, index: true},
+      name: {type: String, index: true, sort: true},
+      email: {type: String, index: true},
+      birthday: {type: Date, index: true},
+      role: {type: String, index: true},
+      order: {type: Number, index: true, sort: true},
+      vip: {type: Boolean}
+    });
+
+    before(seed);
+    it('should allow to find using like', function (done) {
+      User.find({where: {name: {like: '%St%'}}}, function (err, posts) {
+        should.not.exist(err);
+        posts.should.have.property('length', 2);
+        done();
+      });
+    });
+
+    it('should support like for no match', function (done) {
+      User.find({where: {name: {like: 'M%XY'}}}, function (err, posts) {
+        should.not.exist(err);
+        posts.should.have.property('length', 0);
+        done();
+      });
+    });
+
+    it('should allow to find using nlike', function (done) {
+      User.find({where: {name: {nlike: '%St%'}}}, function (err, posts) {
+        should.not.exist(err);
+        posts.should.have.property('length', 4);
+        done();
+      });
+    });
+
+    it('should support nlike for no match', function (done) {
+      User.find({where: {name: {nlike: 'M%XY'}}}, function (err, posts) {
+        should.not.exist(err);
+        posts.should.have.property('length', 6);
+        done();
+      });
+    });
+
+    function seed(done) {
+      var count = 0;
+      var beatles = [
+        {
+          seq: 0,
+          name: 'John Lennon',
+          email: 'john@b3atl3s.co.uk',
+          role: 'lead',
+          birthday: new Date('1980-12-08'),
+          order: 2,
+          vip: true
+        },
+        {
+          seq: 1,
+          name: 'Paul McCartney',
+          email: 'paul@b3atl3s.co.uk',
+          role: 'lead',
+          birthday: new Date('1942-06-18'),
+          order: 1,
+          vip: true
+        },
+        {seq: 2, name: 'George Harrison', order: 5, vip: false},
+        {seq: 3, name: 'Ringo Starr', order: 6, vip: false},
+        {seq: 4, name: 'Pete Best', order: 4},
+        {seq: 5, name: 'Stuart Sutcliffe', order: 3, vip: true}
+      ];
+      User.destroyAll(function () {
+        beatles.forEach(function (beatle) {
+          User.create(beatle, ok);
+        });
+      });
+
+      function ok() {
+        if (++count === beatles.length) {
+          done();
+        }
+      }
+    }
+
+  });
+
 });
 
+
+