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Transcript of BroadVision 4.0 Ganesh Siddhamalli .
BroadVision 4.0
Ganesh Siddhamallihttp://gsspageat.webjump.com
Agenda
• Introduction and Overview• BV Component - I• BV Component - II• BV Database• Targeted Content
Pre-requisites– UNIX– C++– Javascript– Basic OO A & D– Basics of RDBMS– CORBA– Basics of Web Architecture
• HTTP• CGI• HTML
What is BV ?• System designed for Rapid Application
Development and Real Time operation of large web based business solutions.
• High Transaction volumes and can easily integrated with existing systems.
• Application Server + Framework + Application Development Environment.
• Can Build Applications that are Secure, Powerful, Scalable and Flexible.
What is one-to-one
• Marketing Model• 1-1 focuses on the individual and tailors
the marketing to individual’s interest and need.
• The content displayed to a user can be individualized based on pre-defined rules.
• These rules use the user profile or the previous visit history of the user.
BV - Web Apps
• Pre-built web application frameworks that can be customized to the needs.
• Commerce Web App• Financial Web App• Knowledge Web App
• Commerce Web App is the most mature.
BV - Commerce Web• Personalization
– Observed Info– Stated Info(Profile)– Transaction Info– Matching
• Shopping– Anonymous & Registered– Shopping Cart– Shopping List : Shared, Personal– Search : Parametric, text, category
BV - Commerce Web (..Contd)
– Marketing, promotions, incentives– Discussion Groups– Alerts : Web, email & more
• Transactions– Order management– Payment Processing– Pricing, shipping, handling, tax– Security– APIs
BV - Commerce Web (..Contd)
• Administration/ Tools– Content Administration– Reporting– Rules Administration– Template Creation– User Administration
BV - Financial Web• Core Banking transactions• Bill Payment• Adapter to Checkfree’s remittance Pipeline
Processing(RPP) engine for payment processing
• Download data into Quicken, spreadsheets• Alerts & Stock Quotes• Customer Service• Financial Server• Sample Application
BV - Financial Web• Core Banking transactions• Bill Payment• Adapter to Checkfree’s remittance Pipeline
Processing(RPP) engine for payment processing
• Download data into Quicken, spreadsheets• Alerts & Stock Quotes• Customer Service• Financial Server• Sample Application
BV - ArchitectureLayers Elements Roles
Presentation Templates Template Developers
Business Business Rules & Contents Business Managers
Application One-to-OneComponets – Database Accessors – Open APIs
Application Developers
Database – External Systems – File System Database Admins
BV Component Architecture
• JavaScript Layer– allows BV components to be used in
pages
• Component Reference Layer– passes messages between JS Layer and
implementation
• Component Implementation Layer– does the heavy lifting
CR CI External Services
JS
Benefits of BV Comp. Arch. • Abstraction
– separation between application logic (scripts) and implementation (components)
• Portability– scripts are portable across platforms
• Performance– can architect distribution of app logic
between scripts and components to optimize performance
Benefits of BV Comp. Arch. (..contd)
• Productivity– Component developers, script
developers and GUI designers can each do their own thing.
• Scalability– can add components without
distributing existing system
BV Arch - Components
• Components are standalone entities
• Components may be very light, or may represent an entire vertical slice of your system
• Components may run in several different environments … interfaces are key
BV Built-in Components• System
– Process• Similar to Application Variable• BV stores the process data• Control Info.
– Session– Logging
• Logs only BV Logs
– Request– Response– Error Handling
BV Built-in Components• Application
– Visitor• Will help to log as who, when logs to BV
– Content• to create dynamic web pages
– Observation• can use 3rd party Report generators
– Search• Text, Content-base search
– Alert• Email - HTTP Content - MIME type
BV Process Architecture
• Browser– Visitor Point of Contact with site HTTP
Server
Browser
HTTP Server
Dynamic Command Center
Interaction Manager with
Embedded Javascript Engine
One - to-One Server
JSP Files
Script Pre-processor
Script Cache
DB
Component Interface Compiler
C++ Compiler
Component Interface File
C++ Component Files
Shared library
of Components
Supporting Files & Tools
Browser
HTTP Server
Dynamic Command Center
Interaction Manager with
Embedded Javascript Engine
One - to-One Server
JSP Files
Script Pre-processor
Script Cache
DB
Component Interface Compiler
C++ Compiler
Component Interface File
C++ Component Files
Shared library
of Components
Supporting Files & Tools
HTTP ServerSite’s connection with WWWBV adds the interface that forwards visitor request to an IM running on a specific machine.
Browser
HTTP Server
Dynamic Command Center
Interaction Manager with
Embedded Javascript Engine
One - to-One Server
JSP Files
Script Pre-processor
Script Cache
DB
Component Interface Compiler
C++ Compiler
Component Interface File
C++ Component Files
Shared library
of Components
Supporting Files & Tools
Dynamic Command Center (DCC)UI for creating and maintaining Business Rules
Browser
HTTP Server
Dynamic Command Center
Interaction Manager with
Embedded Javascript Engine
One - to-One Server
JSP Files
Script Pre-processor
Script Cache
DB
Component Interface Compiler
C++ Compiler
Component Interface File
C++ Component Files
Shared library
of Components
Supporting Files & Tools
JSP Files (Page Scripts)text file .jsp containing server-side Javascript, HTML, text, Component Reference
Browser
HTTP Server
Dynamic Command Center
Interaction Manager with
Embedded Javascript Engine
One - to-One Server
JSP Files
Script Pre-processor
Script Cache
DB
Component Interface Compiler
C++ Compiler
Component Interface File
C++ Component Files
Shared library
of Components
Supporting Files & Tools
Interaction Manager(IM)Comm. & Process control for handling HTTP requestsControls processing page scriptsControls interactions with underlying 1-to-1 servers
Browser
HTTP Server
Dynamic Command Center
Interaction Manager with
Embedded Javascript Engine
One - to-One Server
JSP Files
Script Pre-processor
Script Cache
DB
Component Interface Compiler
C++ Compiler
Component Interface File
C++ Component Files
Shared library
of Components
Supporting Files & Tools
Embedded Javascript EngineNS JS engine embedded directly into the IM
Browser
HTTP Server
Dynamic Command Center
Interaction Manager with
Embedded Javascript Engine
One - to-One Server
JSP Files
Script Pre-processor
Script Cache
DB
Component Interface Compiler
C++ Compiler
Component Interface File
C++ Component Files
Shared library
of Components
Supporting Files & Tools
Script Pre-ProcessorConverts a Page Script into pure SSJS
Browser
HTTP Server
Dynamic Command Center
Interaction Manager with
Embedded Javascript Engine
One - to-One Server
JSP Files
Script Pre-processor
Script Cache
DB
Component Interface Compiler
C++ Compiler
Component Interface File
C++ Component Files
Shared library
of Components
Supporting Files & Tools
Script CacheCache of compiled page scripts
Browser
HTTP Server
Dynamic Command Center
Interaction Manager with
Embedded Javascript Engine
One - to-One Server
JSP Files
Script Pre-processor
Script Cache
DB
Component Interface Compiler
C++ Compiler
Component Interface File
C++ Component Files
Shared library
of Components
Supporting Files & Tools
Component Interface FilesDefines interface between C++ and Javascriptdefines methods & Attr. Accessible from pge scriptsfile .jsi
Browser
HTTP Server
Dynamic Command Center
Interaction Manager with
Embedded Javascript Engine
One - to-One Server
JSP Files
Script Pre-processor
Script Cache
DB
Component Interface Compiler
C++ Compiler
Component Interface File
C++ Component Files
Shared library
of Components
Supporting Files & Tools
Component interface CompilerGenerates C++ Source code with callbacks of JS engine
Browser
HTTP Server
Dynamic Command Center
Interaction Manager with
Embedded Javascript Engine
One - to-One Server
JSP Files
Script Pre-processor
Script Cache
DB
Component Interface Compiler
C++ Compiler
Component Interface File
C++ Component Files
Shared library
of Components
Supporting Files & Tools
C++ Component FilesJavascript - Visible C++
Browser
HTTP Server
Dynamic Command Center
Interaction Manager with
Embedded Javascript Engine
One - to-One Server
JSP Files
Script Pre-processor
Script Cache
DB
Component Interface Compiler
C++ Compiler
Component Interface File
C++ Component Files
Shared library
of Components
Supporting Files & Tools
Shared Library of ComponentsShared object libraries loaded by IM when it fires up
Flow of the Application
• Visitor requests for the Page from the Browser
• HTTP server processes request via BV CGI or NSAPI interface, connects to IM– IM gets path from CGI environment
and validates it
• IM checks script cache for a compiled script– if no script, IM runs pre-processor and
caches compiled script
Flow of the Application (..contd)
• IM runs compiled script in embedded JS engine
• Embedded JS engin processes component invocation
• IM sends back result to HTTP server
• HTTP server delivers HTML page to server.
Interaction Manager• Manages application requests from site
and returns the requested information• Maintains association between visitors
and browser requests• Loads and runs scripts• Works with secure HTTP servers to
process encrypted information• Maintains conn. between app and BV
servers.• Manages caches(profiles, content,
categories, scripts)
Interaction Manager (..Contd)• Multi-threaded Process
– connection Manager handles multiple, simultaneous tasks
– Requests are sent to the connection Manager, which tracks the status of the various engines
– IM can run multiple engines to distribute the workload.
– It is scalable and is limted only by the hardware of the host machine.
BV Components
BV Component
• What is a BV Component• How to Use BV component• Commonly used BV Components
What is BV Component
• BV does everything with SSJS.• All the Javascript components are
executed in IM.• The Javascript layer of the BV
architecture allows BV components to be used in Javascript scripts.
What is BV Component (..contd)• All the dynamic page scripts utlize
Javascript Components exclusively.• All Presentation logic should be
performed in the Javascript Layer and not the business logic.
• Sorting and searching, you should write in C++ rather than Javascript.
What is BV Component (..contd)• Javascript Componet Prefix
– BVI
• C++ Components Prefix– BVC
How to use BV Component• Creating BV components is done
via the new keyword rather than accessing creator method :– var oContMgr = new
BVI_ContentManager(“on_line”);
– oCont = oContMgr.contentbyQuery(…);
Commonly Used Components• BVI_Request• BVI_Response• BVI_Session• BVI_Visitor• BVI_Properties
• BVI_Content• BVI_ContentList• BVI_ContentMana
ger• BVI_Category• BVI_Multivaluetab
le
BVI_Request
• Why Use it ?– Get values sent from client– Get values sent from web server– Encode special characters in URLs
• Where to Use it– Whenever the input from the client or
web server is required.
BVI_Request (…Contd)• How to Use it
– Instantiating a BVI_Request obejct• automatically instantiated by BV once for each JSP• Object Name : Request• Globally vailable within all SSJS functions
– Get variables sent from client in <Form> tages or URL arguments• Use .value() or .values() accessor methods• Pass in name as a string• Receive back the value as a string or
BVI_StringList• .url_encode() to escape the special
characters in url’s before placing on HTML page.
BVI_Request (…Contd)
• How to Use it– Examples
• var firstname = Request.value(‘first_name’);
• var listcolors = Request.values(‘colors’);
– Add new ites to Request Object• Request.add_attribute(“tempval”,”5”);
– CGI Environment Variables• HTTP_COOKIE, HTTP_HOST• var cookies = request.HTTP_COOKIE;• will return the string and will have to parse
the string.
BVI_Response• Mirror image of BVI_Request• Way to communicate back to the
client.• Whatever goes into Response buffer
gets passed back to the web server and passed back to the client.
• Why Use it ?– Send output to client– Redirect page processing flow
BVI_Response (…Contd)• Where to Use it ?
– JS routines that directly write output to the output buffer.
– The HTML is wrapped up into a Response.write automatically by BV.
• Instantiating a BVI_Response Object– automatically instantiated by BV once
for each JSP– Object name : Response– Globally available within all SSJS
functions
BVI_Response (…Contd)• Send output to the client
– Response.write(‘Last Name: ’+lastname);
• Redirect Page Processing– .localRedirect()
• pass relative file reference• Do not pass any query string parameters• Session and Request objects are preserved• BV processes redirection on server• Use Return() to halt processing of currect
page.• Client’s URL doesn’t change.• Response.locatRedirect(‘main/
home_page.jsp’);
BVI_Response (…Contd)• Redirect Page Processing
– . redirect()• pass full URL :
‘http:[//server]/path/filename?query’• Results in additional call to serverr by
client• Client’s URL changes• Response.redirect(‘http:/bin/my_im/
main/home_page.jsp’);• If no server name is used, by default, the
browser will use the last referenced server.
BVI_Response (…Contd)• .redirect() and .localRedirect()
flush the headers before redirecting– HTTP header can be used to set
cookies on the browser.– If you set a cookie on Page ‘A’ then
redirec to page ‘B’ the cookie is lost from the HTTP response header.
BVI_Session• Identifies a unique connection to
the application and maintains state across pages.
• Session is consistent across each of client requests - parameters along on the URL is must.
• Can store info. As a property of a session object, then access the same from another page script.
BVI_Session (…Contd)• Why use it ?
– Set current visitor after authentication– Save application State on server– Get session parameters to preserve
session for• URL’s• HTML forms
• Where to use it– Pages that need to Maintain
• user authentication or• application state
BVI_Session (…Contd)• How to Use it
– Automatically instanticated by BV once for each JSP
– Object Name : Session– Globally available within all SSJS functions– Automatically preserved when
BV_EngineID and BV_SessionID parameters are passed between pages.
– Set Current visitor after authentication• Can be saved on the session to use in later
pages.
BVI_Session (…Contd)• How to Use it
– Get session parameters to preserve session for URLs and HTML forms• To maintain session across Javascript
pages the BV_EngineID and BV_SessionID parameters must be passed
– on the URL query string or– as hidden fields on HTML forms
– Can Store Primitive datatypes and BVI objects• Cannot store Javascript objects• To Free the Memory
– Session.myvalue = null;
BVI_Session (…Contd)• initSessionState()
– will initialise useful session data onto the session object.
• setCurrentVisitor()– Will set the Id of the Visitor
• makeScriptURL()– Puts session parameters onto a URL.
BVI_Visitor• Encapsulates methods and
properties of the visitor. E.g. passowrd, visitor Id etc.,
• Why Use it ?– Get/set single/multiple visitor attributes– Register Guests
• Where to use it ?– Registration– Authentication– Profile updates
BVI_Visitor (…Contd)• How to Use it ?
– Instantiating a BVI_Visitor Object• Transient Guests
– created for free, when a new session is created.– are visitor objects created automatically with
new session objects– their profile is only in RAM, lost when session
objects– useful for sites that do NOT require registration
but track user information during visits
• Permanent Guests– are visitors whose profile information is stored
in the db but cannot be used to login ever again
BVI_Visitor (…Contd)• How to Use it ?
– Instantiating a BVI_Visitor Object• Members
– are registered visitors whose profile information is stored in the database and can be retrieved on subsequent visit to the site.
– Registered visitors can be retrieved using BVI_VisitorManager.visitor()
• Examples (Single Attribute)– var username = visitor.USERNAME;– visitor.CITY = ‘Atlanta’;
BVI_Visitor (…Contd)• How to Use it ?
– BVP_Properties object can be used to quickly update multiple visitor attributes in one operation
– Examples (Multiple Attributes)propertyList = new BVI_Properties();propertyList.CITY = ‘Wahsington D.C’;propertyList.STATE = ‘DC’;propertyList.COUNTRY= ‘USA’;visitor.updateProperties(propertyList);
BVI_Visitor (…Contd)• How to Use it ?
– Registered Guests• using .registerGuest() method• visitor.registerGuest(username,password,
true);
– .PASSWORD is write-only• Is a setter and not a getter.• Use .isPasswordValid() to authenticate
visitors
BV Component II
BVI_ContentManager• What is Content ?
– Is the stuff, that is dynamically generated to make up the website :• Products, Tables, Catalogs
– Content is displayed in the browser as the result of a database Query.
– Tool that is used to access items in the database.
– Examples• For shopping cart catalog• Customer content types
BVI_ContentManager (…Contd)• Returns a BVI_ContentList or
BVI_Content object– BVI_ContentList - zero or more content
items– BVI_Content - zero or one object - Single
item.
• contentByCondition()– method that requires a list of attributes
(columns) to return. • Use a BVI_StringList object and use
the .append method to set desired attributes.
BVI_ContentManager (…Contd)• Example
var oAttrList = new BVI_StringList();oAttrList.append(“price”);oAttrList.append(“description”);var oContList =
oContMgr.contentByCondition(“device_type = ‘CD_ROM’”, “RAC”,”Devices”,oAttrList);
BVI_ContentManager (…Contd)
– ContentByJoin() • references multiple tables and does a
SQL JOIN command
– contentByOID()• When a particular BV Object ID is know
– returns a single BVIContent object
– maxReturn property controls the maximum number of rows returned from any single query.
BVI_ContentList• Represents a list of contents• Each element in the list has the
same content type and belongs to the same service.
• List can sorted.• Returned from BVI_ContentManager• Returned by other BVI_ContentList
methods• .length method returns the number
of elements in the list
BVI_ContentList (…Contd)• .get method is used to retrieve an
individual• Example
for (iNdx = 0;iNdx<oContList.length;++iNdx)oCurCont = oContList.get(iNdx);
• .cursor property to set the current location in the list
• List is ‘0-based’
BVI_Content• Represents the content - Table• Used to get columns from a
database.• When a specific values of an objects
is required.• Returned from
BVI_ContentManager.contentByOID() or from BVI_ContentList.get()
• .get() method to retrieve an attribute (column) as a BVI_Value object.
BVI_Content (…Contd)
• New Content objects can be created and added to the databasevar oNewCont = new
BVI_Content(“RAC”,”Editorials”)
• Changes made to BVI_Content object are not transmitted to persistent storage - Database
• To update the content values– BVI_ContentManager.updateContent()
method
BVI_Value
• Use it to receive results when the return type is not known in advance.
• Can be used to read data off of fields once you have a Content Object instantiated.
• Why use it ?– To access field values of database table
using BV objects such as :• BVI_Visitor• BVI_Content• BVI_Category
BVI_Value (…Contd)
• Where to use it ?– Anywhere database reads and writes are
performed using BV objects– Any database values can be accessed.
BVI_Category• It is the interface to a hierarchical storage
area for content.• It has the methods to retrieve content and
subcategories based on category membership.
• Allows you to create a hierarchical organizations of similar products.
• Why to Use it ?– Navigate through the hierarchical tree of
categories for a content type.– Retrieve the content stored in a given category.
BVI_Category (…Contd)
• Where to use it ?– Applications where content is grouped or
organized hierarchically.– Used to retrieve a list of things that have
been stored in the category.– Example - Shopping Cart
• Computer - > Monitor/Printer/Keyboard
– Selecting the root category can be done with• BVI_ContentManager.categoryInfo
BVI_Category (…Contd)
• Examplevar contentManager - new
BVI_ContentManager();var category =
contentManager.categoryInfo(‘/clothing/shirts/rugby’,’myservice’,’mycontenttype’);
var parent = category.parentOID; // rugby’s parent id
var parentCategory = contentManager.categoryInfo(parent,’myservice’,’myContentType’); // same as saying /clothing/shirts
BVI_Category (…Contd)• Navigate category hierarchy using
parentCategory() and childCategory()• Example
var childCats = rootCategory.childCategories();var category = childCats.get(1);var parentCat = category.parentCategory();
• Get list of all content in a category using childContent()– Retrieves all content in a category. (DCC off-
line)– Var childlist = category.childContent();
BVI_Category (…Contd)
• Get list of all content in a category or its descendents using memberContent()– Useful to get a list of all content in a given
branch of all category tree.– Var descendentList =
category.memberContent(); - will return all content on all categories below and including the current one.
BVI_MultivalueTable
• Why Use it ?– To access child tables associated with
visitors or content
• Where to Use it ?– Wherever detailed records are required.
• Visitor preferences
– Allows to create child tables associated with a given piece of content.
BVI_MultivalueTable (..Contd)
• How to use it– Retrieve the detail record for content
using .multiValueTable()– var table =
content.multiValueTable(‘PRODUCT_COLORS’);
– Retrieve the detail records for a visitor using the name of the multivalue attribute
– var table = visitor.COLOR_PREFERENCES;– multiValueTable will return a
BVI_MultiValueTable Object.
BVI_MultivalueTable (..Contd)• How to use it
– Get the number of records in the table using .lengthvar recordCount = table.length;for (var I=0; I<recordCount;I++){
table.cursor = I;var nameList + = table.name + ‘,’;}
– .cursor is used for locating the row.
BVI_MultivalueTable (..Contd)• How to use it
– Retrieve an entire row from the multvalue table using .get()
– Example• var row = table.get(2);• var name = row.name;
– Jump to a particular row using .locate()var message = ‘The shirt is in stock’;var row = table.locate(‘color’,’red’);If (row > -1) // -1 no match
message + = ‘we have it in your favorite color’;
BV Database
What in BV Database
• BV Schema• Designing a Data Model Extension• Implementing a Data Model
Extension• Data Loading• Dynamic Command Center
Using BV Database• Two kinds of Information in a BV
system, that are stored & organized in a series of tables in BV schema
• Profile– Information contains all the attributes
for site visitors such as demographics, preferences, buying patterns.
• Content– Information consists of all the
information that can be presented on the site.
BV DB Schema• Creating a new visitor reecord
results in the creation of one record in each of the following tables :– BV_USER– BV_ACCOUNT– BV_USER_PROFILE
BV_USER• Information needed for a user to
logon to the system.• New User - insertion
– User_ID - Integer - Unique for each visitor
– Account_ID - Integer - Identifies the visitor Account
– Password - varchar(255) - Only BV comp can access it.
– PMT_PREFERENCE - varchar(50) - Payment method preferred.
BV_USER (..Contd)– USER_STATE - Integer - 0 - active/ 1 -
Inactive– Modif_Time - DateTime - when the
user_state was last modified.
BV_USER_PROFILE• Stores the additional information
associated with a user.– USER_ID - Key from BV_USER– NAME - varchar(50) - Name of the
visitor– ADDRESS, CITY, STATE, ZIP, COUNTRY,
EMAIL, – LAST_LOGIN_DATE - Useful to avoid the
updates to this table, at every login.– AVG_LOGIN_DAYS - days between login– NUMBER_LOGIN - count of logins
BV_USER_PROFILE (..Contd)
– Also includes the following fields as• home_phone, bus_phone, age_range,
gender, income_range, no_household, marital_status, employ_status, occupation, education_level, want_message, invalid_email
• You can also modify this table, but BV recommands the Users not modify BV_USER table
BV Content• BV allows system designers to create
their own data structure• Each BV content requires the following
six fields :• OID - Unique BV generated ID - Number(28)• STORE_ID - to Identify the Store• CREATION_TIME - A date field populated by BV• STATUS - whether the content is on-off line.• DELETED - Flags, When deleted with DCC and
a DBA can remove it.• LAST_MOD_TIME - BV will update
automatically.
BV_DISCUSSION• Enables you to store discussion
group information.• Discussion group includes :
– Title– Description– Author Information– Publication Information– Rating Statistics
BV_EDITORIAL• It is for a publication system where
several primary publishers present information to consumers.
• On-line articles, includes :– Publication information– Media references - images, audio files
or URL– Billing data– Rating Statistics
DESIGNING A DATA MODEL EXTENSION
• What are attributes ?– An attributes describes a single
characteristics about a visitor or content item such as• Name• favorite color
– Attributes are properties of Visitor or Content.
– Adding new attributes to Visitor Profile and Content tables• Can Add a attribute
DESIGNING A DATA MODEL EXTENSION (..Contd)
– Easy to add null able attributes to an existing table.
– Non-null fields require a data conversion strategy
– You can add attributes to the existing BV table.
– BV recommends to create an extension table and associate to the existing table.
DESIGNING A DATA MODEL EXTENSION (..Contd)
• To maintain the multi-value attributes– BV provides related attributes list– These are child tables in a one-to-many
relationship.– The content or visitor is a parent.
• Example– A User has multiple color preference.
DESIGNING A DATA MODEL EXTENSION (..Contd)
– BV_USERUser_ID User_Name Shirt_Size585 John Smith XL– USER_COLOR_LINKSUSER_ID COLOR_LINKS585 RED585 GREEN585 BLUE
• BV_USER to USER_COLOR_LINKS is one to many
DESIGNING A DATA MODEL EXTENSION (..Contd)
• Multi-value tables have to be explicitly loaded.
• Explicitly insert and update should be done to the table.
• BV is not a regular RDBMS, so there are not always corss-references between tables.
• You need to maintain referential integrity.
DESIGNING A DATA MODEL EXTENSION (..Contd)
• Issues :– In Current version of BV 4.0, you cannot
develop rules on multi-value extensions.– BV 4.1 will overcome this limitation.
Implementing a Data Model Extension
• When to Implement ?– Once the Single Attributes or Multivalue
attributes are decided for you application.– You must first have the required fields as
USER_ID and six other fields.
• Where to specify ?– Source File (.SRC)– Structured text file that describe the parts
of BV database.
Implementing a Data Model Extension
• SRC …
Implementing a Data Model Extension
– Used to define content and visitor profiles tables.
– Each SRC file defines one or more BV database tables.
– Some SRC files contain definitions for extended data types.
– A parsing process will register the Content Type and generate SQL that can be applied to the database.
Implementing a Data Model Extension
• SRC Files– Required Information
• CLASS - identifies a unique name for the content and will be used inside of BV.
• STORE - Which store will access this or ALL_STORE
• CONTENT - The string used to refer to this from application code.
• CONTENT_KIND - Name that will be visible to the users of DCC.
• TABLE - name used for CREATE TABLE statement.
Implementing a Data Model Extension
• SRC Files– Example
Knowledge.src<CLASS_SECTION>CLASS: HP_KNOWLEDGESTORE: ALL_STORE /*Default */CONTENT: HP_KNOWLEDGETABLE : HP_KNOWLEDGE /* table Name */• The Content and table name are same above but
need not be same.
Implementing a Data Model Extension
• SRC Files– Optional #include statement allows
inclusion of custom data types• #include “cnt_type.src”
– Optional storage clause for database DDL• TABLE_OPTION - Allows to specify the storage
parameters for database, this is tagged onto the end of table creation statements.
• INDEX_OPTION - Allows to specify storage parameters for database. There is only one index storage option and so all have the same size.
Implementing a Data Model Extension
• SRC Files– OID does not appear in the SRC File - BV will
update automatically.– Required Attributes of content type
ATTRIBUTE : KNOWLEDGE_IDTYPE : STRING NOT NULLCOLUMN : varchar (20)ATTR_KIND : REQ_ATTRFRIENDLY_NAME : Knowledge IdSEMATICS : Unique integer assigned to knowledge
Implementing a Data Model Extension
• SRC Files– The Generating the SQL of the above statements will result a insert into
a BV_ATTRIBUTES table.– Multi-value attributes tables
• Defined as a LIST_TABLE in the SRC– with a table name
• Attributes are simply listed under the LIST_TABLE statement• Parent Key is implied by the list table.• Define a column as key if required a composite key.
• SRC Files– BV Data Types
• Numeric– LONG, Double, MONEY
• Character– STRING, TEXT (varchar(2000)
• DATETIME• Enumeration - Integer or strings• Boolean - enumeration or a long• Can be NOT_NULL• No blobs and no images.
Implementing a Data Model Extension
• SRC Files– Attribute Kind
• KEY - identifies primary key• REQ_ATTR - Will ensure user enters value when
editing in DCC.• READ_ONLY - makes the attribute read only in
DCC• HIDDEN - will prevent the data from being
displayed in DCC.• Column - Native database column definition.
Implementing a Data Model Extension
• SRC Files– Generating the schema.mk file
mycontent_db.sql : mycontent_spec.src/bin/touch mycontent_spec.tmp mycontent_db.sql/bin/rm -f mycontent_spec.tmp mycontent_db.sql$(CPP) -B mycontent_spec.src mycontent_spec.tmp$(SCH_GEN) -schema mycontent_spec.tmp -script
mycontent_db.sql -cnt -class_only
– Be care full to use the tabs at the beg. Of continued lines
– -cnt for content definition
Implementing a Data Model Extension
• Generating the SQL filesmake -f schema.mk mycontent_db.sql
• Applying SQL$BV1To1/bin/scripts/apply_sql
mycontent_db.sql
Implementing a Data Model Extension
• Extending an existing content type
• Put the word EXTENSION at the top of the SRC file– SQL will be generated to alter the existing
tables.
Data Loading• A set of Unix utilities are available to
perform bulk loading of data into BV database– These tools are run when system is off-line.– Provide delimited text files containing raw
data for batch insert or update.
• Load Users– BV_load_users utility batch creates or
updates visitor accounts in the BV database.
Data Loading (…Contd)• Load Content and Load Categories
– Use BV_load_cat to load categories– The BV_load_content utility loads data into
• content tables• related list tables• categories
Dynamic Command Center - DCC
• DCC is a Windows 95/NT application.• Useful during development for testing
purposes and looking at the database data.
• DCC used to create the Rule sets in BV applications.
• DCC is an Orbix client, it connects to the ‘Generic db Accessor’, server through.
• DCC must be configured with the correct Orbix parameters.
Targeted Content
• What is targeted Content ?– Visitor 1 is a rich software developer like
you.
– Visitor 2 is a physics student with a trillion dollars in debt.
Targeted Content
• Know your visitor– Last time they were here, they looked at a
lot of diet books– They have previously purchased
subscriptions to “Carpenters Monthly” and “Home Improvement Magazine”
– They created an account and filled in a user profile form, telling us :
• gender, age, profession, income, shoe size, favorite color ...
Targeted Content
• Where do you have data about the visitor ?– User Profile– Session– Event
• Bought Product A• Viewed a Category B
Targeted Content
• What content can be targeted ?– Any BV content type
• Product• Advertisement• editorial
– Categories• Instead of returning actual content from the rules,
BV categories can be returned.
Targeted Content
• Incentives• Notifications• Observations