node-red-node-harperdb

A Node-RED node to read and write to HarperDB.

Install

Run the following command in your Node-RED user directory - typically ~/.node-red

 npm install node-red-contrib-harperdb

Usage

Execute Operations against HarperDB see http://docs.harperdb.io for more info.

Inputs

insert

schema HarperDB schema where you want to insert.

table HarperDB table where you want to insert.

update

schema HarperDB schema where you want to update.

table HarperDB table where you want to update.

delete

schema HarperDB schema where you want to delete.

table HarperDB table where you want to delete.

hash_attribute The hash_attribute(s) you wish to delete are defined in msg.payload in HarperDB. Note this can be a single value or an array of values.

search_by_value

schema HarperDB schema where you want to search.

table HarperDB table where you want to search.

search_attribute The attribute in HarperDB that you wish to search/filter.

search_value The attribute in your msg.payload that you wish use to search/filter the search_attribute For example msg.payload.search_value

get_attributes The attributes you want returned in your response. If using multiple values seperate with a comma For example id,breed,age

search_by_hash

schema HarperDB schema where you want to search.

table HarperDB table where you want to search.

hash_values Where the values you wish to search/filter the hash_attribute on live in your msg.payload so for example if your hash_values are in msg.payload.hash_values then you want to put hash_values

get_attributes The attributes you want returned in your response. If using multiple values seperate with a comma For example id,breed,age.

SQL

msg.payload.sql

Make sure your msg.payload has a parameter on it called sql. For example{msg.payload.sql = "select * from dog" }

msg.topic

Make sure your msg.topic contains your sql statement. For example{msg.topic = "select * from dog" }

fixed_statement

Type in whatever SQL you want in the input box. It will override anything else sent to HarperDB for example "select * from dog"