1

Adapters for TIBCO

3

Active Database Adapter (ADB)

- A real time bi-directional gateway between databases and applications

- Supports both publish-subscribe and request-response interactions

- Proactively notifies applications of changes that occur inside the database

- Subscribe to messages from other applications and capture the messages into target

tables in the database

- Requests from applications are processed by the adapter and replies containing the

processed request are sent back by the adapter to the requesting application

- Works with ODBC and JDBC compliant databases (Oracle, Sybase, and MS SQL Server)

4

ADB Architecture

5

Publications - Method to monitor an individual table & publish any change as entire

record over the TIB with flag (I, U, D)

Subscriptions Method to take incoming information in and store it on the database

Request/Reply - Allows adapter to query (request) the database and send back

immediate response (reply)

Request - Multiple SQL and/or procedure statements to be processed

Reply - Answer for these messages processed by the agent

Listener -

- To configure a publisher agent that sends messages on subjects using the RVCM

- Adds a subscriber agent (called a listener) to the publisher agent's preregistered list

- Subscriber agent is certified to receive all messages sent on the specified subject

Parent Child Relationship

Publications

Table Relationships - To send out extra information with a publication

Subscriptions

Child Table Mapping - Used by subscriber agent to process a message that

includes data from the publishing (parent) table and related data from another

(child) table

Services of the ADB

6

Features

- Automatically publish data as TIBCO RV messages when rows in pre-specified DB

tables are modified

Publish data by value creating a copy Publish data by reference w/o creating a copy Publish on parameterized subjects subject created from contents of PT columns Publish data using TIBCO RV reliable delivery, certified delivery or both

Pre-register certified subscribers with a certified publisher

Publish both parent and all related child rows when user set up to publish child

data

- Automatically subscribe to data published as TIBCO RV messages and modify the data

in pre-specified DB tables

- Use request-response semantics to publish SQL statements, stored procedures, or both

on a specified subject

Support both RV Message and AE Message wire formats

Support RPC (Remote Procedure Calls)

7

Publish by Value - Modified data in the source table is duplicated in the PT

- ADB selects the data from the PT, compose a message and sends it to RV

- Advantage - Publish by copy is fast

- Disadvantage - Does not support some data types(Oracle LONG and LONG RAW)

Publish by Reference - Publish data directly from the source table without copying to a publishing table

- Operate on the key value of source table copied into PT

- Advantage :

Data to be published is stored just once

Data types such as Oracle LONG and LONG RAW are supported

Publishing by value from a top-level table is unsupported due to database trigger

limitations

- Disadvantage : Small time gap between source table modification & picked up by

adapter

Parameterized Subjects - Created from contents of one or more columns in a publishing table

eg - TIBCO.ORDER.$ORDER_ID.$ORDER_DESCRIPTION

- Allows receiving applications to filter publications based on value of certain fields

- Supported with certified & reliable delivery

- Restrictions : Max 255 char in length, with each component max 127 char (Content

8

Publication-Subscription Services Flow

9

Typical Request-Response Service Flow

10

ADB Architecture Components

Run-time Adapter - A bi-directional bridge between your database and the TIBCO environment

Design-time Adapter - Used at design-time to fetch the tables from your database that need to be

configured for an adapter instance.

TIBCO Run-time Agent - Provides connectivity to other applications configured for the TIBCO

environment.

Polling or Alerter -

Polling - Monitor frequent changes to PT

Alerter - Asynchronously alert the adapter of infrequent changes in PT

Referencing External Schemas - External schema can be referenced when specifying a publisher

source table or subscriber destination table

Exception Table - If a subscriber adapter fails to write data to its destination table, it will write the

data to the exception table.

Loop Detection - If a source table is used both as the source and destination table on the same

subject, the loop detection feature should be enabled, to prevent the same changes from being

published repeatedly

11

Publish-Subscribe Exercise

ORDER_TABLE Pub_Order

XXX XXX XXX XXX XXX XXX

Sub_Order

Order_ID

Order_Description,

Order_Price

Order_ID

Order_Description

Order_Price

ADB related columns

Order_ID

Order_Description,

Order_Price

Agentone Agenttwo

ADB.agentone.ORDER

12

Parent/Child Tables Exercise

CUSTOMER

Order_Details

XXX XXX

XXX XXX

XXX XXX

Internal_Order_Items

XXX XXX

External_Order_Items