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Connecting Bold BI to Presto data source

Bold BI Dashboard Designer supports connecting Presto database through SQL Live Query (REST API).

Choose Presto data source

To configure the Presto data source, follow the below steps:

  1. Click the Data Sources button in the configuration panel to add a new data connection.

    Data source icon

  2. Click CREATE NEW to launch a new connection from the connection panel.

  3. Select the Presto connection in the connection panel.

    Choose data source

NOTE: You can also create a data source from the home page by clicking the Data Sources menu from left menu panel and Create Data Source from the data sources page.

Choose data source from server

Connect to Presto

Create Presto data source

After clicking the data source, the NEW DATA SOURCE configuration panel opens. Follow the given steps to create a Presto data source:

  1. Enter a name and description (optional) for the data source.

  2. Enter a valid Presto server or host name in the Server Name text box.

  3. Enter its corresponding port in Port text box.

  4. Enter the Catalog Name from below Presto Connectors Link. https://prestodb.github.io/docs/current/connector

  5. Choose None or BASIC authentication in Authentication Mechanism combo box.

  6. Enter a valid Presto user name and password if you choose Basic Authentication Mechanism.

  7. Select the database you want to query in the listed database associated with the given Presto Server in Database combo box.

    Presto Connection

In future, you can edit the connection information using Edit Connection option.

Data Preview

  1. Click Connect to connect the Presto server with configured details. The schema represents the collection list that are retrieved from the Presto server. This dialog displays a list of schemas in treeview and its corresponding values.

    Treeview schema

  2. Now, the data design view page with selected table schema opens. Drag and drop the table.

    Query designer

    Either you can use the Code View options for passing query to display data.

    Codeview mode

  3. Click Save to save the data source with a relevant name.

Connecting Bold BI to Presto Data Source via REST API

Prerequisites

Type while creating the data source needs to be presto.

Rest API - v4.0

Parameters for creating Data Source

Parameters Details
Servername

required
`string`

Server name or Host name of the connection
Port

required
`string`

Port number used to connect to the presto server.

AuthenticationType

optional
`string`

None or Server Authentication. By default, it is None.
Username

optional
`string`

A valid username for the connection. Required for Server Authentication.
Password

optional
`string`

A valid Password for the connection. Required for Server Authentication.
CatalogName

required
`string`

Catalog which need to be connected.

Database

required
`string`

database which needs to be connected
Schemaname

required for table mode
`string`

Enter a valid Schemaname
Tablename

required for table mode
`string`

Enter a valid Tablename
Query

required for code view mode
`string`

Enter a valid Query
AdvancedSettings

optional
`string`

Additional optional connection parameters can be provided. By default, it is empty.
CommandTimeout

optional
`string`

Enter a valid Timeout for connection. By default, it is 300
IsSshConnection

optional
`boolean`

Enable or disable SSH. By default, it is false.
SshServerName

optional
`string`

Enter a valid Ssh Server name. By default, it is empty.
SshPort

optional
`integer`

Enter a valid Ssh Port number.
SshUserName

optional
`string`

Enter a valid Ssh Username. By default, it is empty.
SshPassword

optional
`string`

Enter a valid Ssh Password. By default, it is empty.
Expressions

optional

`Array of Objects`



Parameters for adding expressions when creating Data Source

Parameters Details
Name

required

`string`

Name of the Expression

Expression



required

`string`

Expression


Parameters for editing Data Source

NOTE: For editing Data Source via API. All the parameters are optional. The parameter which needs to be changed can be provided.

Parameters for modifying expressions when editing Data Source

Parameters Details
Name

required

`string`

Name of the Expression

Expression



required

`string`

Expression


Action



optional

`string`

add/delete/edit

By default, it is add.

NewName

optional

`string`

For renaming the expression. This is applicable only if the Action is edit

Connection Sample for Table Mode

For creating connection:

"Connection": [
{
"Servername": "string",
"Port": "string",
"AuthenticationType": "string",
"Username": "string",
"Password": "string",
"CatalogName": "string",
"Database": "string",
"Schemaname": "string",
"Tablename": "string",
"AdvancedSettings": "string",
"CommandTimeout": "string",
"IsSshConnection": "false",
"SshServerName": "string",
"SshPort": 0,
"SshUsername": "string",
"SshPassword": "string",
"Expressions" : [{
"Name": "Expression1",
"Expression" : "SUM(numeric expression)"
    },
    {
"Name": "Expression2",
"Expression" :  "UPPER(string expression)"
}]
}
]

For editing connection:

"Connection": [
{
"Servername": "string",
"Port": "string",
"AuthenticationType": "string",
"Username": "string",
"Password": "string",
"CatalogName": "string",
"Database": "string",
"Schemaname": "string",
"Tablename": "string",
"AdvancedSettings": "string",
"CommandTimeout": "string",
"IsSshConnection": "false",
"SshServerName": "string",
"SshPort": 0,
"SshUsername": "string",
"SshPassword": "string",
"Expressions" : [{
"Name": "Expression1",
"Expression" : "SUM(numeric expression)",
"NewName" : "Sum",
"Action": "edit"
    },
    {
"Name": "Expression2",
"Expression" :  "UPPER(string expression)"
"Action": "delete"
}]
}
]

NOTE: Through Rest API, the data source can be created or edited with only one table. If different table is provided in edit data source, the table will be replaced. The widgets will be retained only if the schema is same as the previous table.

Connection Sample for Code View Mode

"Connection": [
{
"Servername": "string",
"Port": "string",
"AuthenticationType": "string",
"Username": "string",
"Password": "string",
"CatalogName": "string",
"Database": "string",
"Query": "string",
"AdvancedSettings": "string",
"CommandTimeout": "string",
"IsSshConnection": "false",
"SshServerName": "string",
"SshPort": 0,
"SshUsername": "string",
"SshPassword": "string",
"Expressions" : [{
"Name": "Expression1",
"Expression" : "SUM(numeric expression)"
    },
    {
"Name": "Expression2",
"Expression" :  "UPPER(string expression)"
}]
}
]

Data Transformation

Editing a Data Connection

Dashboard Designer Walkthrough

Presto Integration