text: /*!
   * Module requirements.
   */
  
  var SchemaType = require('../schematype')
    , CastError = SchemaType.CastError
    , errorMessages = require('../error').messages
    , utils = require('../utils')
    , Document
  
  /**
   * Number SchemaType constructor.
   *
   * @param {String} key
   * @param {Object} options
   * @inherits SchemaType
   * @api private
   */
  
  function SchemaNumber (key, options) {
    SchemaType.call(this, key, options, 'Number');
  }
  
  /**
   * This schema type's name, to defend against minifiers that mangle
   * function names.
   *
   * @api private
   */
  SchemaNumber.schemaName = 'Number';
  
  /*!
   * Inherits from SchemaType.
   */
  SchemaNumber.prototype = Object.create( SchemaType.prototype );
  SchemaNumber.prototype.constructor = SchemaNumber;
  
  /**
   * Required validator for number
   *
   * @api private
   */
  
  SchemaNumber.prototype.checkRequired = function checkRequired (value, doc) {
    if (SchemaType._isRef(this, value, doc, true)) {
      return null != value;
    } else {
      return typeof value == 'number' || value instanceof Number;
    }
  };
  
  /**
   * Sets a minimum number validator.
   *
   * ####Example:
   *
   *     var s = new Schema({ n: { type: Number, min: 10 })
   *     var M = db.model('M', s)
   *     var m = new M({ n: 9 })
   *     m.save(function (err) {
   *       console.error(err) // validator error
   *       m.n = 10;
   *       m.save() // success
   *     })
   *
   *     // custom error messages
   *     // We can also use the special {MIN} token which will be replaced with the invalid value
   *     var min = [10, 'The value of path `{PATH}` ({VALUE}) is beneath the limit ({MIN}).'];
   *     var schema = new Schema({ n: { type: Number, min: min })
   *     var M = mongoose.model('Measurement', schema);
   *     var s= new M({ n: 4 });
   *     s.validate(function (err) {
   *       console.log(String(err)) // ValidationError: The value of path `n` (4) is beneath the limit (10).
   *     })
   *
   * @param {Number} value minimum number
   * @param {String} [message] optional custom error message
   * @return {SchemaType} this
   * @see Customized Error Messages #error_messages_MongooseError-messages
   * @api public
   */
  
  SchemaNumber.prototype.min = function (value, message) {
    if (this.minValidator) {
      this.validators = this.validators.filter(function (v) {
        return v.validator != this.minValidator;
      }, this);
    }
  
    if (null != value) {
      var msg = message || errorMessages.Number.min;
      msg = msg.replace(/{MIN}/, value);
      this.validators.push({
        validator: this.minValidator = function (v) {
          return v === null || v >= value;
        },
        message: msg,
        type: 'min',
        min: value
      });
    }
  
    return this;
  };
  
  /**
   * Sets a maximum number validator.
   *
   * ####Example:
   *
   *     var s = new Schema({ n: { type: Number, max: 10 })
   *     var M = db.model('M', s)
   *     var m = new M({ n: 11 })
   *     m.save(function (err) {
   *       console.error(err) // validator error
   *       m.n = 10;
   *       m.save() // success
   *     })
   *
   *     // custom error messages
   *     // We can also use the special {MAX} token which will be replaced with the invalid value
   *     var max = [10, 'The value of path `{PATH}` ({VALUE}) exceeds the limit ({MAX}).'];
   *     var schema = new Schema({ n: { type: Number, max: max })
   *     var M = mongoose.model('Measurement', schema);
   *     var s= new M({ n: 4 });
   *     s.validate(function (err) {
   *       console.log(String(err)) // ValidationError: The value of path `n` (4) exceeds the limit (10).
   *     })
   *
   * @param {Number} maximum number
   * @param {String} [message] optional custom error message
   * @return {SchemaType} this
   * @see Customized Error Messages #error_messages_MongooseError-messages
   * @api public
   */
  
  SchemaNumber.prototype.max = function (value, message) {
    if (this.maxValidator) {
      this.validators = this.validators.filter(function(v){
        return v.validator != this.maxValidator;
      }, this);
    }
  
    if (null != value) {
      var msg = message || errorMessages.Number.max;
      msg = msg.replace(/{MAX}/, value);
      this.validators.push({
        validator: this.maxValidator = function(v) {
          return v === null || v <= value;
        },
        message: msg,
        type: 'max',
        max: value
      });
    }
  
    return this;
  };
  
  /**
   * Casts to number
   *
   * @param {Object} value value to cast
   * @param {Document} doc document that triggers the casting
   * @param {Boolean} init
   * @api private
   */
  
  SchemaNumber.prototype.cast = function (value, doc, init) {
    if (SchemaType._isRef(this, value, doc, init)) {
      // wait! we may need to cast this to a document
  
      if (null == value) {
        return value;
      }
  
      // lazy load
      Document || (Document = require('./../document'));
  
      if (value instanceof Document) {
        value.$__.wasPopulated = true;
        return value;
      }
  
      // setting a populated path
      if ('number' == typeof value) {
        return value;
      } else if (Buffer.isBuffer(value) || !utils.isObject(value)) {
        throw new CastError('number', value, this.path);
      }
  
      // Handle the case where user directly sets a populated
      // path to a plain object; cast to the Model used in
      // the population query.
      var path = doc.$__fullPath(this.path);
      var owner = doc.ownerDocument ? doc.ownerDocument() : doc;
      var pop = owner.populated(path, true);
      var ret = new pop.options.model(value);
      ret.$__.wasPopulated = true;
      return ret;
    }
  
    var val = value && value._id
      ? value._id // documents
      : value;
  
    if (!isNaN(val)){
      if (null === val) return val;
      if ('' === val) return null;
      if ('string' == typeof val) val = Number(val);
      if (val instanceof Number) return val
      if ('number' == typeof val) return val;
      if (val.toString && !Array.isArray(val) &&
          val.toString() == Number(val)) {
        return new Number(val)
      }
    }
  
    throw new CastError('number', value, this.path);
  };
  
  /*!
   * ignore
   */
  
  function handleSingle (val) {
    return this.cast(val)
  }
  
  function handleArray (val) {
    var self = this;
    return val.map(function (m) {
      return self.cast(m)
    });
  }
  
  SchemaNumber.prototype.$conditionalHandlers =
    utils.options(SchemaType.prototype.$conditionalHandlers, {
      '$all': handleArray,
      '$gt' : handleSingle,
      '$gte': handleSingle,
      '$in' : handleArray,
      '$lt' : handleSingle,
      '$lte': handleSingle,
      '$ne' : handleSingle,
      '$mod': handleArray,
      '$nin': handleArray
    });
  
  /**
   * Casts contents for queries.
   *
   * @param {String} $conditional
   * @param {any} [value]
   * @api private
   */
  
  SchemaNumber.prototype.castForQuery = function ($conditional, val) {
    var handler;
    if (arguments.length === 2) {
      handler = this.$conditionalHandlers[$conditional];
      if (!handler)
        throw new Error("Can't use " + $conditional + " with Number.");
      return handler.call(this, val);
    } else {
      val = this.cast($conditional);
      return val == null ? val : val
    }
  };
  
  /*!
   * Module exports.
   */
  
  module.exports = SchemaNumber;
  