How to query property keys with conditions in LoopBack - node.js

Question

How to query the key values of properties in LoopBack? In my case, the keys are array of objects.
The schema I generated is,
{
"bookingsLog": [
{
"checkIn": 1456079400000,
"checkOut": 1456165800000
},
{
"checkIn": 1456079400000,
"checkOut": 1456165800000
}
]
}
The remote method used to query is,
Resort.search = function(custom, cb) {}
Resort.remoteMethod('search', {
accepts: {
arg: 'custom',
type: 'object',
http: function(ctx) {
var _cIn = ctx.req.body.checkIn;
var _cOut = ctx.req.body.checkOut;
Resort.find({
where: {
and: [{ checkIn: { neq: _cIn } }, { checkOut: { neq: _cOut } },
{ checkIn: { neq: { between: [_cIn, _cOut] } } },
{ checkOut: { neq: { between: [_cIn, _cOut] } } }
]
}
}, function(err, resorts) {
console.log('Length is = ' + resorts.Length);
console.log('Res is = ' + JSON.stringify(resorts));
if(err){return ctx.res.send(err);}
if(resorts){return ctx.res.send(resorts);}
});
}
},
returns: {
arg: 'custom',
type: 'object'
}
});
Thanks in advance!