simple field

There are three types of type values:

• simple
  • bigdecimal, biginteger, boolean, binary, date, double, integer, string
• container
  • array, object
• reference
  • reference
• free-form
  • any

This section is focusing on the simple types.

bigdecimal & biginteger

If a field is defined as biginteger or bigdecimal in metadata it is stored as a string on the back end. Therefore operators < and > are not allowed during search.

boolean

Values can be true or false.

binary

An open-ended data type for storing binary data, it is recommended that each use of this field clearly indicates what encoding is used. For example, in java use DatatypeConverter.printBase64Binary(byte[]). Note there are limits on document sizes, see MongoDB Limits and Thresholds documentation.

date

JSON does not have a standard format for date. In lightblue we are using the following format: YYYYMMDDTHHmmssSSSS+-ZZZZ

For example, to represent noon on Janurary 1, 2016 EST: 20160101T1200000000-0500

double

Floating point number. If precision is important use bigdecimal.

integer

A 64 bit integer.

string

Any field with text. Limits on size can be imposed using constraints: minLength, maxLength

uid

Exists but is deprecated. Do not use! Instead use type of string and a value generator. The following example is a 1:1 replacement for the old uid type where it also implied identity constraint.

"fieldName": {
    "type": "string",
    "constraints": {
        "identity": true
    },
    "valueGenerator": {
        "type": "UUID"
    }
}