ODB Page

• Midas Documentation
• Feature Listing
• Application Listing
• Online Database

Links

• mhttpd MIDAS web server
• Status Page
• Programs Page
• Alarms Page
• MSCB Page
• History Page
• Custom Page
• odbedit

Purpose

The purpose of the mhttpd ODB page is to allow the user to browse, search and edit the ODB of an experiment. This gives a graphical alternative to using the ODB editor odbedit.

Access the ODB page

The ODB Page is accessed from the Status Page (or any of the other Pages) by clicking on the menu-button ODB. The top level ODB trees will be visible as links.

Example ODB Page

Browse the ODB

By clicking on the links on the ODB page, the user can browse the various subtrees.

By clicking on the "+" link adjacent to the "Value" heading, the type and size of the keys are shown. This is equivalent to the odbedit commands "ls" and "ls -l". 

Edit a key

By clicking on a key, the user can change the value (unless the user does not have write access, e.g. if web security has been set up or the key is write-protected).

Create a key

The user can create a new key in a tree or subtree by clicking the Create button. The type of key is selected from the drop-down list. The choices are

Key Types

Integer(32-bit)

Float (4 bytes)

String

Multi-line String

Subdirectory

Byte

Signed byte

Character (8-bit)

Word (16-bit)

Short integer(16-bit)

Double Word (32-bit)

Boolean

Double float(8 Bytes)

Symbolic link

Search the ODB for a key

Click on the Find. button. The following pop-up appears in which the user types the relevant information.

ODB Page "Find" pop-up