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MES905: Building Mobile Web Applications with SQL Anywhere

MES905: Building Mobile Web Applications with SQL Anywhere. David Loop Principle Consultant daveloop@ianywhere.com August 15-19, 2004. The Enterprise. Unwired. The Enterprise. Unwired. Industry and Cross Platform Solutions. Manage Information. Unwire Information. Unwire People.

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MES905: Building Mobile Web Applications with SQL Anywhere

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  1. MES905: Building Mobile Web Applications with SQL Anywhere David Loop Principle Consultant daveloop@ianywhere.com August 15-19, 2004

  2. The Enterprise. Unwired.

  3. The Enterprise. Unwired. Industry and Cross Platform Solutions Manage Information Unwire Information Unwire People • Adaptive Server Enterprise • Adaptive Server Anywhere • Sybase IQ • Dynamic Archive • Dynamic ODS • Replication Server • OpenSwitch • Mirror Activator • PowerDesigner • Connectivity Options • EAServer • Industry Warehouse Studio • Unwired Accelerator • Unwired Orchestrator • Unwired Toolkit • Enterprise Portal • Real Time Data Services • SQL Anywhere Studio • M-Business Anywhere • Pylon Family (Mobile Email) • Mobile Sales • XcelleNet Frontline Solutions • PocketBuilder • PowerBuilder Family • AvantGo Sybase Workspace

  4. The Mobile World

  5. Mobile “Always Available” Applications • Extend enterprise information to mobile workers on demand • Mobile workers need to be productive anywhere, anytime • Wireless access is not 100% (underground, countryside, restricted areas) • “Always available” model leverages: • Local Data Store • Accesses important/frequent information offline • Synchronize when necessary • Increases batterly life and performance • Saving on connection costs • Enterprise Information • Interface with enterprise systems for data and access • Appy and enforce existing enterprise security standards

  6. Challenges to Mobile Web Applications • Mobilize Enterprise Data • Security • Performance • Reliability • Development Effort • Deployment Effort • Cost But these are not specific to Mobile Web Applications

  7. Real Challenges to Mobile Web Applications • Mobile application adoption, usability • Enterprise integration and access • Enterprise security • device, transmission and authentication • Distributed application logic • Device characteristics • form follows function • Device disparity • Distributed and mobile deployment • Re-deployment and healing • Development learning curve

  8. Why Mobile Applications with M-Business Anywhere? • Delivers web content and web applications • Web developers leverage their existing skill sets with open standards • rapid development • low cost of ownership • rich environment • Dynamic Mobility and Connectivity • Widest range of mobile devices over any network • Seamless transition between online and offline • Centralized User, Content and End-to-End Security Management • Mobile Portal Self-Service Configuration

  9. M-Business Anywhere (M-BA) • M-BA Components • Multi-platform client browser • HTTP/Synchronization Server • Features • Integrates into existing web • Synchronizes and caches web pages on client • Auto-Sensing and On-Demand • Custom client and server logic • Integration with UltraLite and MobiLink • Benefits • Ease of developing web applications • Always Available • Multi-platform

  10. M-Business Anywhere Architecture

  11. UltraLite for M-Business Anywhere • UltraLite local data store • Relational database • SQL open standard • Fast, Efficient, Robust, Secure • Encryption and authentication • MobiLink • Synchronize directly to your enterprise systems • Encrypted stream and authentication to enterprise • Script based logic through standard SQL • UltraLite for M-Business Anywhere API • HTML embeds JavaScript • JavaScript to call API • Execute standard SQL • Optimized access (9.0.2) • Performance AND all other benefits of an RDBMS

  12. UltraLite Development • UltraLite Database • Created and opened programmatically through a schema file • Interface through API classes • Web page embedded JavaScript to select, insert, update, delete, synchronize • UltraLite Schema • UL Schema Painter to create or modify • Schema file (.usm) copied down to device through channel • Synchronization • Initiated through user action or through channel sync (9.0.2) • Connection made to MobiLink • MobiLink scripts control data movement using standardized script names and events • If a script exists, data can be moved back and forth. • Separate scripts for upload and download

  13. UltraLite for M-Business Anywhere Architecture Web Content M-Business Anywhere M-BA Client Browser Web Apps Enterprise Systems MobiLink Data ULPod UltraLite

  14. Tasty Baked Goods – Solution Sample • M-Business Anywhere and UltraLite POD Solution Sample

  15. Tasty Baked Goods - Route Management Tasty Baked Goods - Route Management • Route Management • Manage Bakery Delivery Route • Route is downloaded to device • Products that are ordered, delivered and returned updated in database • Store manager signs the invoice • Historical reports and graphical displays of data • Two way sync

  16. Tasty Baked Goods – Solution Sample • M-Business Anywhere and UltraLite POD Solution Sample • DEMO

  17. Getting Technical • Client side processing accesses the UltraLite database • Manipulating the Client side browser • Synchronization • Deployment

  18. Getting Technical • Client side processing accesses the UltraLite database • Access to the UltraLite POD • Connection to UltraLite database • Issue SQL commands to UltraLite database • UltraLite for M-Business Anywhere API • Manipulating the Client side browser • Synchronization • Deployment

  19. Access to the UltraLite POD • M-Business Anywhere Group Channels • HTML with embedded JavaScript • JavaScript files access from HTML • UltraLite schema file (USM) • JavaScript will attempt to: • Reconnect to the UltraLite database specified • if that fails, create new connection to the UltraLite database • if the database doesn’t exist, create it from the schema • Once the POD object has been created • Continues to exist • Persist connections between different pages

  20. Access to UltraLite POD • UltraLite POD is looking for the string prefix "iAnywhere.UltraLite.DatabaseManager" dbMgr = CreateObject( "iAnywhere.UltraLite.DatabaseManager.route_mgmt" ); var dir = dbMgr.directory; var parm = dbMgr.createConnectionParms(); parm.connectionName = "route_mgmt"; parm.databaseOnCE = dir + "\\rm.udb"; parm.schemaOnCE = dir + "\\rm.usm";

  21. PODS ULPod = “iAnywhere.UltraLite.DatabaseManager” + “.unique_identifier” Page 1 Page 2 Page 1 dbMgr = CreateObject con = dbMgr.createDatabase … // may or may not // close con on any page dbMgr = CreateObject con = dbMgr.reOpenConnection … // choose to close con.close dbMgr = CreateObject con = dbMgr.openConnection … ULPod in M-Business Anywhere Client MBA Client “iAnywhere.UltraLite.DatabaseManager.route_mgmt”

  22. Connection to UltraLite database try { conn = dbMgr.reOpenConnection( "route_mgmt" ); if ( conn == null ) { conn = dbMgr.openConnectionWithParms( parm ); } } catch ( ex ) { if ( dbMgr.sqlCode == dbMgr.SQLError.SQLE_ULTRALITE_DATABASE_NOT_FOUND ) { try { conn = dbMgr.createDatabaseWithParms( parm ); …

  23. Issue SQL commands to UltraLite database this.getProducts = function( my_cust_id ) { var query = “ SELECT P.name " + " FROM customer C, sales_history SH JOIN product P ON PRODUCT_ID " + " WHERE C.CUSTOMER_ID = SH.CUSTOMER_ID " + " AND C.CUSTOMER_ID = ?”; var stmt = this.dbConn.conn.prepareStatement( query, "stmt_get_products" ); stmt.setIntParameter(1, my_cust_id); var rs, prod_array = new Array; try { rs = stmt.executeQuery( null ); rs.moveBeforeFirst(); while ( rs.moveNext() ) { prod_array[prod_array.length] = rs.getString(1); } } catch ( ex ) { // handle exception } finally { stmt.close(); } return prod_array; }

  24. UltraLite for M-Business AnywhereAPI Object Heirarchy

  25. API Object HeirarchyConnection

  26. API Object HeirarchyDynamic SQL

  27. API Object HeirarchyTable

  28. API Object HeirarchySynchonization

  29. Getting Technical • Client side processing accesses the UltraLite database • Manipulating the Client side browser • API to access to objects on the browser • From the browser to UltraLite and back • Synchronization • Deployment

  30. Manipulating the Client side browser • JavaScript in HTML must access the browser objects • DOM API used for finding and accessing objects • JavaScript events for interacting with User • onclick, onsubmit, onload, etc • Methology shift from server-side • Server-Side DHTML • Create full HTML file on server • HTML tags and data are both string • Once sent to client, changes must be resubmitted by client to server and back • Client-Side DHTML • HTML object already exists • add HTML objects dynamically through DOM API • Web pages do not need refreshing (re-downloading)

  31. Manipulating DOM Consider the following HTML BODY <head><script>…</script></head> <body> <p align="center"><b>List All Products</b></p> <table border="1" cellpadding="1" cellspacing="1" width="100%" id="TableList"> </table> <p><a href="main_page.htm">Back to main page</a></p> <p><a href="insert_page.htm">Insert new Product</a></p> </body>

  32. Manipulating DOM <table border="1" cellpadding="1" cellspacing="1" width="100%" id="TableList"> </table> var idx, objTable, eleTR, eleTD1, eleTD2; objTable = document.getElementById(“TableList”); for ( idx=0; idx<array.length; I++ ) { eleTR = objTable.insertRow(idx); eleTR.style.color = “black”; eleTD1 = eleTR.insertCell(0); eleTD1.appendChild( document.createTextNode(idx) ); eleTD2 = eleTR.insertCell(1); eleTD2.appendChild( document.createTextNode(array[idx]) ); }

  33. Manipulating DOM List All Products Back to main page Insert new Products

  34. SELECT Example of Client-Side DHTML <html><head><script src="common.js"></script> <script language="JavaScript1.2"> function Display() { try { var pstmt = conn.prepareStatement( "SELECT FIRST cust_name FROM ULCustomer ORDER BY cust_id", "cust_list_ps" ); var rs = pstmt.executeQuery("cust_list_ps"); rs.moveNext(); var objTitle = document.getElementById("Heading_Customer"); objTitle.appendChild(document.createTextNode(rs.getString(1))); } catch ( ex ) { // handle exception } } </script> </head><body onload="Display()" > <H1 ID="Heading_Customer"></H1> </body></html> * Database and “conn” are handled in common.js

  35. INSERT Example of Client-Side DHTML <script language="JavaScript1.2"> function insertRow() { … var pstmt = conn.prepareStatement( “INSERT INTO ULCustomer (cust_name) values (?)", "cust_insert_ps" ); pstmt. setStringParameter(1, document.insert.custname.value); pstmt.executeStatement("cust_insert_ps"); … } </script> </head><body><form name="insert"> <input type="text" name="custname" size="10"><br> <input type="button" value="Insert"onclick="insertRow();"><br> <input type="reset" value="Reset"> </form></body></html>

  36. Getting Technical • Client side processing accesses the UltraLite database • Manipulating the Client side browser • Synchronization • Classes from the API • Setting up the parameters • Coding • Architecture • Deployment

  37. UltraLite POD Synchronization with MobiLink Web Content M-Business Anywhere M Business Anywhere Client Web Apps Enterprise Database MobiLink Content ULPod UDB

  38. API Object HeirarchySynchonization

  39. Data Synchronization Configuration • Synchronization • MobiLink for data • MobiLink sync configuration can be embedded in app • M-Business Anywhere for application UI and logic • Integrated in ActiveSync Hotsync, use M-Business Connect for wireless • Synchronization configuration for MobiLink within M-Business Client

  40. UltraLite Synchronization conn.syncParms.setStream( conn.syncParms.STREAM_TYPE_TCPIP ); conn.syncParms.setUserName( document.dbsync.syncusrname.value ); conn.syncParms.setVersion( document.dbsync.syncver.value ); // stream parms include host and port conn.syncParms.setStreamParms( document.dbsync.syncparm.value ); conn.syncParms.setDownloadOnly( true ); conn.saveSyncParms(); window.showBusy = true; conn.synchronize(); window.showBusy = false; if ( conn.syncResult.getUploadOK() != true ) { alert( "Upload is not OK!" ); } else { alert( "Synchronization finished!" ); }

  41. Getting Technical • Client side processing accesses the UltraLite database • Manipulating the Client side browser • Synchronization • Deployment • M-Business Anywhere • Deploying Channels • Schema file • Deployment Options

  42. Deploying UltraLite for M-Business Anywhere • Develop a Group for all your download content • Each downloadable object is a Channel • USM • DLL • Root HTML file (will bring its children down too) Web Content M-Business Anywhere USM M-Business Anywhere Admin ULPod9.dll

  43. Application Deployment • Deployment - distributed as M-Business channels • Ultralite Pod runtime (500 – 600 KB) • Web applications • Schema file

  44. Architecture of the Client Win32 M-BA Client Each Channel Group gets its own directory for web pages All binaries including UL Pod DLLs, USMs, ULConnect.exe • Create one Channel Group exclusively for downloading the UL binaries • Only download either ULPOD9.DLL or ULPODCLIENT9.DLL • Each Channel Group that uses UltraLite, should download its own USM

  45. Where Does the Database Come From? • Create a USM file using Schema Painter • Generate a USM from from an ASA database using ulinit ulinit -f ../html/common/rm.usm -n Delivery -c "dsn=remote"

  46. Simplified Development Steps • Create schema for database using Schema Painter • Develop web pages that access database • Create Group on M-Business Anywhere Server • Create channels for all download content • Add users to the Group • Use the Client to download the content and test • Generate MobiLink synchronization scripts* • Modify Web pages to invoke synchronization • Client does a “Sync All” for channels and test * this process can be greatly helped by using an ASA remote to auto-generate scripts

  47. UltraLite POD for M-Business Anywhere (9.0.2) • Two Options for POD implementation • Standalone • Client / Engine (9.0.2) • Only one should be deployed

  48. UltraLite POD – Standalone Runtime • Accesses databases directly and quickly but can not be shared. • Through ULPod9.dll • Deployment to: • Win32, Windows CE, Palm OS devices

  49. UltraLite POD - UltraLite Engine • UltraLite client communicates with UltraLite engine to access databases. • Databases can be shared by different applications. • Deployment: • Win32, Windows CE • Requirements • ulpodclient9.dll through an M-BA Channel • dbuleng9.exe deployed separately • ulpodclient9.dll replaces ulpod9.dll functionality • Currently only one of ulpod9.dll or ulpodclient9.dll should be deployed to a M-BA Client • POD technology will pass “iAnywhere.UltraLite.DatabaseManager” for acceptance • Only needed if UltraLite will be access outside of M-BA

  50. One-Button-Synch (9.0.2) • M-Business Anywhere Channel Sync will initiate a MobiLink/UltraLite Synchronization • Deploy • ulconnect.exe • ulconnect.usm • Each successful synchronization (previous example) adds a connection entry into ULConnect.UDB • Each connection entry will be synchronized • Connection entries can be skipped • Connection.skipMBASync = true; • Only exists for Win32 and PocketPC • PocketPC has a CAB that will install itself

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