PROGRAMMING DELPHI DATABASE APPLICATIONS by Francisco Charte. (C) 2017 Danysoft

Transcription

1 PROGRAMMING DELPHI DATABASE APPLICATIONS by Francisco Charte (C) 2017 Danysoft

2 LIST OF FIGURES 1.1 ARCHITECTURE OF A BDE-BASED SOLUTION ARCHITECTURE OF A SOLUTION BASED ON IBX ARCHITECTURE OF A SOLUTION BASED ON DBGO ARCHITECTURE OF A SOLUTION BASED ON DBEXPRESS ARCHITECTURE OF A SOLUTION BASED ON DATASNAP ARCHITECTURE OF A SOLUTION BASED ON FIREDAC STARTING A NEW MULTI-DEVICE APPLICATION PROJECT ADDING A DATA MODULE TO THE PROJECT SELECTING THE DATABASE TYPE USING THE CONNECTION PARAMETERS EDITOR. 64

3 24 LIST OF FIGURES 2.5 ENTERING THE SQL STATEMENT TO CREATE THE TABLE OPENING THE TABLE IN THE DATA EXPLORER ADDING SOME DATA TO THE TABLE COMPONENTS ADDED TO THE DATA MODULE CONFIGURING THE TLISTVIEW CONTROL ADDING TO THE FORM A REFERENCE TO THE DATA MODULE BINDING COLUMNS IN THE TABLE TO PROPERTIES OF THE CONTROL FINAL BINDING CONFIGURATION THE RUNNING APPLICATION STRUCTURE OF A DELPHI APPLICATION WHICH USES FIREDAC TO ACCESS A LOCAL DATABASE COMPONENTS TO EMBED FIREDAC DRIVERS INTO A PROJECT FIREDAC ASSOCIATED TO USER INTERFACE ELEMENTS SELECTING A USER INTERFACE PROVIDER ADDING A NEW CONNECTION ASSOCIATED TO THE INTERBASE DRIVER CONNECTION CONFIGURATION OPTIONS EXPLORING THE STRUCTURE OF A DATABASE COMPONENTS ADDED THROUGH DRAG AND DROP FIREDAC EXPLORER GROUPING, ORDERING AND SORTING DATA CONFIGURATION OF MONITORING IN THE TFDCO N N E C T I O N COMPONENT FIREDAC MONITOR USER INTERFACE OPTIONS ASSOCIATED TO THE TFDQU E R Y COMPONENT THE FIELDS EDITOR AND ITS CONTEXT MENU PROPERTIES OF A TFI E L D OBJECT IN THE OBJECT INSPECTOR DEFINITION OF A NEW FIELD ADDED TO THE DATASET THE QUERY EDITOR ALLOWS YOU TO TEST SQL QUERIES CONFIGURATION OF THE PARAMETER USED IN THE EXAMPLE QUERY LIVEBINDINGS WIZARD. 109

4 LIST OF FIGURES FORM AFTER COMPONENTS HAVE BEEN ADDED THE RUNNING PROGRAM INSPECTING THE UPDATE OPERATION VCL IS AVAILABLE ONLY FOR WIN32 AND WIN FMX IS ALSO AVAILABLE FOR OS X, IOS AND ANDROID PROPERTIES FOR APPLYING TRANSFORMATIONS IN FMX WINDOWS-SPECIFIC COMPONENTS IN VCL CREATING A VCL-BASED PROJECT ADDING THE FIREDAC COMPONENTS TO THE DATA MODULE USER INTERFACE WITH A GRID AND A TCH E C KBO X VCL CONTROLS CAPABLE OF CONNECTING TO DATA MAIN COMPONENTS OF LIVEBINDINGS CONFIGURATION OF A TBI N DDA T ASO U R C EDB DESIGNER ASSOCIATED TO THE TBI N D I N G SLI S T COMPONENT LIST OF LiveBindings BINDING CLASSES ADDING AND BINDING A NEW CONTROL TO A DATA FIELD YOU CAN SELECT THE COLUMNS TO ADD CONTROLS AND THEIR BINDINGS TO THE DATA SOURCE THE RUNNING APPLICATION ESTABLISHING THE LINK BETWEEN THE MASTER AND DETAIL TABLES CHOOSING THE FIELDS FOR THE MASTER/DETAIL RELATIONSHIP CONFIGURATION OF THE LOOKUP FIELD BINDINGS BETWEEN DATA COLUMNS AND USER INTERFACE CONTROLS THE RUNNING APPLICATION, SHOWING THE MASTER/DETAIL INTERFACE INTERFACE OF THE INTERBASE MANAGER INTERBASE CONSOLE CONFIGURATION OF THE CONNECTION TO THE DATABASE FIREDAC COMPONENTS ADDED TO THE DATA MODULE. 161

5 26 LIST OF FIGURES 5.5 STRUCTURE OF THE USER INTERFACE CONFIGURATION OF THE DATA BINDINGS THE APPLICATION RUNNING ON WINDOWS REDISTRIBUTABLE COMPONENTS TO ADD TO THE PROJECT ADDING THE DATABASE TO THE LIST OF FILES TO DISTRIBUTE CONFIGURING PERMISSIONS FOR THE APPLICATION CHOOSING THE PLATFORM WHERE TO DEPLOY THE PROJECT PASERVER MANAGER THE APPLICATION, RUNNING ON THE IOS EMULATOR ERROR WHEN TRYING TO CONNECT VERIFYING THE FILES IN THE DEPLOYMENT FOLDER CONTENTS OF THE EXCEL WORKSHEET CONFIGURATION OF THE CONNECTION TO THE EXCEL FILE QUERY TO RETRIEVE DATA FROM THE WORKSHEET BINDING BETWEEN THE GRID AND THE DATA COLUMN CONFIGURATION FOR THE TGR I D THE GRID SHOWING THE DATA RETURNED BY THE QUERY THE APPLICATION AT WORK THE WORKSHEET ADDED TO THE EXCEL WORKBOOK FIREDAC COMPONENTS TO TRANSFER DATA BETWEEN A SOURCE AND A DESTINATION DATA TRANSFER PROCESS WITH TBA T C HMO V E COMPONENTS TO ADD TO THE DATA MODULE CONFIGURATION OF THE TFDBA T C HMO V E COMPONENT CONFIGURATION OF THE TFDBA T C HMO V ETE X TRE A D E R COMPONENT APPEARANCE OF THE USER INTERFACE IN THE FORM DESIGNER THE PROGRAM SHOWING DATA FROM TWO CSV FILES OPTIONS IN THE CONTEXT MENU OF A TFDME MTA B L E DEFINITION OF THE COLUMNS OF A TABLE WITH THE FIELDS EDITOR. 207

6 LIST OF FIGURES ADDITIONAL OPTIONS IN THE TFDME MTA B L E AFTER THE DATASET IS GENERATED STRUCTURE OF THE USER INTERFACE BINDING THE GRIDS TO THE DATA COMPONENTS THE APPLICATION SHOWING THE IN-MEMORY DATABASE EXAMINING THE DATA EXPORTED WITH TFDSQLI T EBA C K U P BIT ASCII CHARACTER SET BIT EXTENDED ASCII CHARACTER SET EXISTING CHARACTER SETS IN UNICODE ENCODING OPTIONS IN WINDOWS NOTEPAD THE BOM ADDED BY NOTEPAD CAN BE SEEN HERE A VARIABLE IDENTIFIER IN JAPANESE DIFFERENCES BETWEEN AN UNICODE STRING AND AN ANSI STRING USE OF ANSI STRINGS WITH AN ALTERNATIVE CODEPAGE REAL CONTENTS OF EACH VARIABLE GUI OF THE PROGRAM THAT LOADS/SAVES FILES WITH ENCODING THE FINISHED PROGRAM IN EXECUTION PARTIAL VIEW OF THE CONTENTS OF THE CSV FILE DEFINITION OF THE FIELDS IN THE CSV FILE THE APPLICATION SHOWING THE DATA READ FROM THE CSV FILE CONFIGURATION OF THE ENCODING FOR AN INTERBASE CONNECTION CONFIGURING THE AUTHENTICATION METHOD LIST OF CONNECTIONS AND PARAMETERS SELECTING SPECIFIC FIELDS IN A QUERY A QUERY WITH ROW FILTERING AND COLUMN SELECTION ELEMENTS TO ADD TO THE FORM THE PROGRAM SHOWING A PAGE OF DATA UPDATE OPTIONS FOR A DATASET ADJUSTING THE QUERY TO EXECUTE LOCATING THE ROW TO UPDATE USING THE PRIMARY KEY. 278

7 28 LIST OF FIGURES 9.10 THE WHERE CLAUSE USES THE PRIMARY KEY AND THE MODIFIED FIELDS THE UPDATE STATEMENT COULD AFFECT MULTIPLE ROWS QUERY INCLUDING A RELATIONSHIP BETWEEN TWO TABLES THE PRIMARY KEY USED IS NOT THE RIGHT ONE SETTING THE PRIMARY KEY FOR UPDATE UPDATE IS PERFORMED WITHOUT PROBLEMS ENTER THE QUERY AND ACCESS THE TFDUP D A T ESQL EDITOR SELECT THE COLUMNS FOR EACH CATEGORY ADJUSTING THE SQL STATEMENTS IF NECESSARY REQUESTING THE DATA GROUPED AND AGGREGATED IN THE SERVER CONFIGURING THE PARAMETER TO SUPPLY TO THE QUERY THE PROGRAM EXECUTING THE USER-DEFINED FUNCTION PROPERTIES OF THE TFDSC R I P T COMPONENT EDITING THE SQL SCRIPT OPTIONS TO TEST THE SCRIPT AT DESIGN TIME DIALOG BOX SHOWING THE EXECUTION OF THE SCRIPT PROPERTIES WHICH CONTROL TRANSACTION MANAGEMENT IT IS NOT POSSIBLE TO OBTAIN A LOCK ON A ROW PROPERTIES OF THE TFDEV E N TAL E R T E R COMPONENT NEW PROPERTIES IN THE TFDQU E R Y COMPONENT CONFIGURATION OF THE EVENT TO MONITOR IN THE DATABASE FORM TO CONTROL TRANSACTIONS AND EDIT THE CATEGORIES FORM TO TEST THE DISCONNECTED MODE ELEMENTS OF THE USER INTERFACE SIMULTANEOUS MODIFICATION GENERATES AN ERROR LINKING THE DATA MODULE TO THE NEW FORM ELEMENTS OF THE CONFLICT RESOLUTION FORM LIST OF ACTIONS IN THE TCO M B OBO X. 341

8 LIST OF FIGURES THE PROGRAM ATTEMPTING TO SOLVE A CONFLICT DEPLOYMENT OF THE INTERBASE CLIENT WITH THE APPLICATION CONFIGURATION OF THE FIREDAC DRIVER FOR INTERBASE INFORMATION ABOUT INTERBASE SERVER CONFIGURATION OF THE ENCODING TO USE MAINTENANCE OPTIONS FIREDAC SERVICE COMPONENTS FOR INTERBASE ARCHITECTURE OF A DATASNAP-BASED SOLUTION JSON DOCUMENT OBTAINED FOR THE TJSONOB J E C T COMPONENTS FOR DATASNAP SERVERS LAUNCHING THE DATASNAP SERVER WIZARD SELECTING THE TYPE OF CONTAINER COMPONENTS TO INCLUDE IN THE SERVER CONFIGURING AND TESTING THE COMMUNICATION PORT COMPONENTS IN THE CONTAINER MODULE THE WINDOWS FIREWALL NOTIFIES THAT THE SERVER DEMANDS NETWORK COMMUNICATION DEFINING THE CONNECTION TO ACCESS THE DATASNAP SERVER EXAMINING THE SERVICE FROM THE DATA EXPLORER USER INTERFACE AND COMPONENTS OF THE CLIENT LAUNCHING THE WIZARD TO GENERATE THE CLIENT MODULE SPECIFYING THE TYPE OF DATASNAP SERVER SUPPLYING THE PARAMETERS FOR THE COMMUNICATION WITH THE SERVER ADDING TO THE FORM REFERENCES TO THE CLIENT MODULES THE CLIENT CONSUMING THE SERVICE USING BOTH METHODS CONTROLLING THE STATE OF THE SERVER THE CLASS WITH THE SERVICE METHODS SHOULD INHERIT FROM TDSSE R V E RMO D U L E COMPONENTS IN THE DATASNAP SERVER MODULE DRAGGING THE PROCEDURE FROM THE DATA EXPLORER. 405

9 30 LIST OF FIGURES ENTERING THE QUERY TO EXECUTE VISUALIZING DATA FROM THE SERVER IN THE DESIGNER SELECTION THE TYPE OF CONTAINER APPLICATION FOR THE SERVER CHOOSING THE ELEMENTS TO INCLUDE IN THE PROJECT COMPONENTS ADDED BY THE WIZARD TO THE WEB MODULE CONFIGURING THE ACCEPTED FILE EXTENSIONS SELECTING THE TYPE OF PROXY TO GENERATE EDITING THE ACTIONS ASSOCIATED TO THE WEB MODULE CONFIGURING THE REQUESTS TO BE ACCEPTED FORM TO CONTROL THE DATASNAP REST SERVER A CALL TO THE SERVICE FROM THE BROWSER USING A GET REQUEST A POST CALL FROM THE METADATA PAGE EXECUTING THE REQUEST FROM THE DELPHI DESIGNER EXAMINING THE RESPONSE OBTAINED FROM THE SERVICE USER INTERFACE OF THE DELPHI REST CLIENT CONFIGURING A REQUEST TO CONSUME THE SERVICE SUPPLYING THE PARAMETERS REQUIRED BY THE SERVICE CONFIGURING THE TPA G EPR O D U C E R COMPONENT ADDING A NEW ACTION TO RETURN THE PAGE THE JQUERY MOBILE REST CLIENT IN ACTION COMPONENTS TO INCLUDE IN THE DATA MODULE OF THE SERVER JSON DOCUMENT CONTAINING THE DATASET THE PROJECT NEEDS A CLIENT REST MODULE TO ACCESS THE SERVER COMPONENTS IN THE DATA MODULE THE CLIENT CAN MODIFY THE DATA SUPPLIED BY THE REST SERVER EXECUTABLES FOR THE EMS DEVELOPMENT VERSION AND THE EMS CONSOLE COMPONENTS TO ACCESS THE EMS SERVICES WIZARDS FOR THE DEVELOPMENT OF EMS PACKAGES. 459

10 LIST OF FIGURES FIRST STEP OF THE CONFIGURATION WIZARD OF EMS THE WIZARD CONFIRMS THE EMS CONFIGURATION EMS SERVER MANAGEMENT CONSOLE CONTROL PROGRAM OF THE DEVELOPMENT CONSOLE EMS DEVELOPMENT CONSOLE THE EVENT LOG SHOWS THE REGISTERED RESOURCES RETRIEVING THE LIST OF REGISTERED GROUPS RETRIEVING THE DETAILS OF A SPECIFIC GROUP CREATING A NEW GROUP USING A POST REQUEST ADDING A NEW USER TO THE PREVIOUSLY CREATED GROUP INITIATING A SESSION ON THE EMS SERVER SUPPLYING THE SESSION TOKEN TO THE SERVICE THE EVENT LOG SHOWS THE START OF A SESSION FIELDS ASSOCIATED TO THE REGISTRATION OF INSTALLATIONS METHODS TO OPERATE ON EMS SERVER GROUPS THE EMS CLIENT RUNNING LAST STEP STEP OF THE EMS PACKAGE WIZARD TESTING THE EMS SERVER-BASED RANDOM NUMBER GENERATOR. 480 A.1 MAIN ELEMENTS IN THE DELPHI IDE. 485 A.2 PANEL CUSTOMIZATION TOOLS. 487 A.3 SAVING THE CURRENT IDE CONFIGURATION. 488 A.4 SEARCHING WITH IDE INSIGHT. 489 A.5 AVAILABLE PROJECT TYPES. 491 A.6 SEARCH WITH IDE INSIGHT. 491 A.7 PROJECT AND TEMPLATES IN THE TOOLBOX. 492 A.8 MULTI-DEVICE PROJECT TEMPLATES. 492 A.9 PROJECT MANAGER. 494 A.10 ADDING A NEW PROJECT TO THE CURRENT GROUP. 495 A.11 LIST SHOWING THE AVAILABLE DESIGN VIEWS. 496

11 32 LIST OF FIGURES A.12 ROTATING THE VIEW AND DISABLING THE DEVICE MASK. 497 A.13 IMPORT OF THE VIEW MODULES. 499 A.14 PRELIMINARY PREVIEW FOR EACH PLATFORM. 500 A.15 ADDING A NEW VIEW TO THE DESIGNER. 501 A.16 COMPONENTS IN THE TOOL PALETTE. 502 A.17 RELATIONSHIP BETWEEN COMPONENTS IN A THE CONTAINER. 503 A.18 PARTIAL VIEW OF THE OBJECT INSPECTOR. 505 A.19 EDITOR FOR STRING LISTS. 507 A.20 SPECIFIC EDITOR FOR A PROPERTY OF TYPE TBR U S H. 507 A.21 LIST OF EVENTS FOR A TFDCO N N E C T I O N COMPONENT. 509 A.22 LIST OF ACCESSIBLE OBJECTS IN THE CURRENT CONTEXT. 511 A.23 LIST OF MEMBERS OF AN OBJECT. 512 A.24 LIST OF PARAMETERS REQUIRED BY A METHOD. 512 A.25 VALID VALUES FOR A PROPERTY OF AN ENUMERATION TYPE. 513 A.26 LIST OF TARGET PLATFORMS AND THEIR CONFIGURATION. 514 A.27 SELECTING THE ACTIVE PLATFORM. 515 A.28 ADDING A TARGET PLATFORM TO THE PROJECT. 515 A.29 SELECTING THE PROJECT BUILD CONFIGURATION. 517 A.30 ACTIVATING A BREAKPOINT. 519 A.31 CONFIGURING A CONDITIONAL BREAKPOINT. 519 A.32 STEP-BY-STEP EXECUTION. 520 A.33 THE VARIABLE VALUE APPEARS IN A POP-UP WINDOW. 522 A.34 DIALOG BOX FOR EXPRESSION EVALUATION. 523 A.35 WATCH WINDOW. 523 A.36 CALL STACK INFORMATION UP TO THE CURRENT POINT. 524 B.1 FORMS IN THE SAMPLE PROJECT FO R M S. 533 B.2 AUTOMATIC TRACKING OF TODO COMMENTS. 536 B.3 ELEMENTS OF AN ENUMERATED TYPE HAVE AN ASSOCIATED VALUE. 544 B.4 VALUE IS OUTSIDE THE DEFINED SUBRANGE. 547

12 LIST OF FIGURES 33 B.5 THE RANGE CHECKING OPTION IS DISABLED BY DEFAULT. 548 B.6 CODE INSIGHT SHOWS THE MEMBERS OF THE RECORD. 554 B.7 ADDING A CODE MODULE TO THE PROJECT. 580 B.8 CODE TEMPLATE FOR A F O R LOOP. 607 B.9 LIST OF THE PREDEFINED CODE TEMPLATES. 608 B.10 SELECTING A PROFILE FOR CODE FORMATTING. 610 B.11 YOU CAN COMPARE AND RESTORE VERSIONS. 612 C.1 THE PAGE FROM WHICH GIT CAN BE DOWNLOADED. 617 C.2 GIT COMMAND LINE INTERPRETER CONFIGURATION. 618 C.3 ACCESS TO GIT S GUI AND COMMAND LINE. 619 C.4 GIT INITIAL CONFIGURATION. 620 C.5 GIT CONFIGURATION IN DELPHI IDE. 621 C.6 CLONING A REMOTE REPOSITORY. 622 C.7 CLONING A REMOTE REPOSITORY. 623 C.8 GET THE CLONING ADDRESS FROM GITHUB. 624 C.9 GIT MENU ADDED TO THE MODULES CONTEXT MENU. 627 C.10 NEW TOOLS MENU OPTION TO INVOKE git init. 628 C.11 USING THE NEW OPTION TO INITIALIZE A NEW LOCAL REPOSITORY. 628 C.12 GIT OPTIONS ASSOCIATED TO THE PROJECT. 629 C.13 LIST OF MODULES WITH CHANGES AND ADDED TO THE PROJECT. 630 C.14 CONTEXT MENU ASSOCIATED TO EACH MODULE. 631 C.15 REVIEWING THE CHANGES TO A MODULE. 631 C.16 UPDATING THE LOCAL REPOSITORY. 633 D.1 DOWNLOADING THE BDE INSTALLER FOR DELPHI XE D.2 INSTALLING BDE ON A COMPUTER WITH DELPHI XE D.3 LOCATING THE COMPONENT PACKAGE ADDED BY THE BDE INSTALLER. 642 D.4 ACTIVATING THE BDE COMPONENT PACKAGE. 643 D.5 BDE COMPONENTS IN THE TOOLBOX. 643 D.6 TOOL FOR IMPORTING BDE ALIASES. 648

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