Apache OFBiz Development The Beginner's Tutorial.pdf-资料库

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Table of Content Preface Chapter 1: Getting Started with OFBiz Getting the OFBiz Code Downloading and Installing SVN Downloading TortoiseSVN Using SVN to Get OFBiz Our OFBiz Workspace—First Look Installing the Java Development Kit (JDK) Downloading JDK 5.0 Installing JDK 5.0 Downloading OFBiz Ready to Launch Setting Up an Eclipse Project Using Derby—the OFBiz Stock Database Compiling OFBiz and Loading the Data Verifying the Installation Process The Compilation Portion The Data Loading Portion Some Pre-Ignition Processes we won't do Twice Backing Up the Derby Data Files Running OFBiz Allocating Memory for OFBiz Starting OFBiz and Verifying the Start-Up Process Seeing the Logs in Real Time Possible Problems with Start-Up Switching Off OFBiz Our First Tour of OFBiz Accessing OFBiz Exploring the Webapp "ecommerce" Let's Buy Something Exploring the Webapp "order" 1 9 9 10 10 11 13 14 14 15 16 16 19 20 20 20 21 21 22 22 22 24 25 25 25 26 26 28 28 32

Table of Contents Receiving Payment Fulfilling the Order Invoice Automatically Generated with Payment Applied End-to-End Tour Completed Summary Chapter 2: Working with OFBiz Adding Our First Field Changing the Data Editing the Entity Definition Updating the Database Changing the Looks Editing the User-Interface Checking Our Changes Changing the Flow Rewiring the "Save" (Update Postal Address) Button Creating the New Widget Screen Creating the FTL File More to the Flow Some Changes Possible with Engines Running Resetting Our Play Area Quickly Skipping Some Pre-Ignition Processes Restoring Derby Data Files Removing the Web Server (Catalina) Work Files Updating the Database with Our Data Entity Changes Showing Off Our Spanking New OFBiz Installation Tripping Up Our Plan Storing a Save-Point to Dramatically Ease Testing Archiving Derby Data Files and Web Server Work Files Restoring a Save-Point Restoring the Derby Data Files Restoring the Web Server Work Files Computer, Run Scenario A from Last Save-Point The Structure of OFBiz in General Components in OFBiz Referencing Components in OFBiz Creating Our Own OFBiz Component Creating the Component Using Our Component Cleaning Up Our Mess in the "party" Component Converting the BeanShell to a Java Event Clean Extension Strategies Employed Checking that Our Move was Successful A Bit More Mess Remains Webapps in OFBiz Creating Our First Webapp [ ii ] 32 34 34 34 35 37 37 39 39 40 40 41 41 42 42 43 44 45 47 48 49 49 49 49 50 50 50 51 52 52 52 52 53 53 54 55 55 55 56 57 59 60 60 60 61

The Model-View-Controller Architectural Pattern Webapp URIs in this Book Testing Our First Webapp The MVC in Plain English The Model in OFBiz The View in OFBiz The Controller in OFBiz Other Files in an OFBiz Component Summary Chapter 3: Screen Widgets Equipping Our Webapp with a Screen Widget View Handler Using the Screen Widget View Handler Files and Locations Creating Our First Screen Widget Defining a Screen Widget Informing the Control Servlet about the Screen Widget Referencing Screen Widgets Uniform Pattern of Flow in OFBiz Seeing Our First Screen Widget The Anatomy of the

Element Our First Conditional Screen Widget Element Order in the controller.xml Inform the Control Servlet about the Screen Widget If-Then-Else Structure The Element The Then— and Elements The Else— Element The Minimum

Sending Parameters with Requests Seeing Our Conditional Screen Widget Screen Widget Context and Variables Utility Objects in Context Nested Sections for Nested Conditions Organizing a Large Screen into Smaller Screens The Global Context Revisited Outer Contexts Visible to Nested Ones Screen Widget's Integration with FreeMarker Cleaning Up in the "party" Component Commenting Changes to the Core Code Screen Widgets as Templates A Candidate for Templating Creating the Header Creating the Footer [ iii ] Table of Contents 62 63 63 63 64 64 65 66 67 69 69 71 71 71 71 72 73 73 74 74 74 75 75 75 76 76 78 78 79 79 79 80 85 88 90 92 93 94 96 97 97 98 98

Table of Contents Using Our Header and Footer Seeing Our First Well-Formed XHTML Document Using Decorator Screen Widgets for Templating Creating a XHTML Decorator Screen Using the XHTML Decorator Screen Seeing Our First Decorator in Action Multiple Content Slots Creating the First Half of the Header Creating the Second Half of the Header Adding a Content Slot to a Decorator Using Our Multi-Slot Decorator Seeing Our First Multi-Slot Decorator Nesting Decorators Top-Down Approach (delegation) The Bottom-Up Approach (Vertical Stack) Using Both Approaches Summary Chapter 4: Form Widgets Files and Locations Creating Our First Form Widget Creating the Containing Screen Widget Referencing Form Widgets Create the Form Widget Seeing Our First Form Understanding the Form Attributes Minimum Requirements to Use Form Widgets Including the Minimal Requirements Form Processing via Request Event Java Events Submitting and Processing Our First Form The "list" Type Form Widget Creating the Containing Screen Adding Form Processing Code Publishing the Form Seeing Our First "list" Type Form The "multi" Type Form Widget Creating the Containing Screen Loading Data for the Form Publishing the Form Creating the Form-Processing Logic Seeing Our First "multi" Type Form Alternative Targets in Two-Target Forms Creating the Form [ iv ] 99 99 100 100 100 101 102 102 102 103 103 104 104 104 106 107 109 111 112 112 112 113 113 114 114 115 116 116 117 118 119 119 120 121 122 122 122 123 124 125 125 126 126

Creating the Containing Screen Publishing the Two-Target Form Seeing Our First Two-Target Form Row-Level Actions Creating the Form Creating the Containing Screen Publishing the Form Seeing the Form in Action Summary Chapter 5: Other View Element Types in Screen Widgets Menu Widgets Creating Our First Menu Widget Including Our Menu Widget in Our Screen Widgets Understanding the Menu Item Attributes Including the Menu Widget via a Decorator Screen Widget Add Screen Widget "ConditionalScreen" to the Menu Sub-Menus and Conditional-Menu Items Pre-processing Actions for Menu Widgets FreeMarker As Decorator Templates Displaying Dynamically Created List Variables Iterating Through the List Bringing it All Together The User-Interface Labels Adding the appheader Summary Chapter 6: The Controller How OFBiz Hears Our Requests—The Control Servlet Defining a Control Servlet for a Webapp Using the Control Servlet Funnelling All Requests to the Single Control Servlet Defining Needed Utility Objects for the Control Servlet GenericDelegator Object The GenericDispatcher Object Some Background on Servlets Programming a Control Servlet Logging into Our Learning Application Specifying Handlers Request Maps Knocking on the Right Doors Security—Before Answering the Door The https Attribute [ v ] Table of Contents 127 127 128 128 129 129 130 130 131 133 134 134 135 135 135 136 137 139 142 142 143 144 145 146 148 150 151 151 152 153 153 154 154 155 156 156 156 159 160 160 160 160

Table of Contents The auth Attribute The direct-request Attribute Event—Determining a Response Java Events Response—Defining Various Responses View Maps Summary Chapter 7: Entities, View Entities, and Extended Entities Entities The Structure of the Data Model Referencing Fields of an Entity OFBiz Uses Relational Database Management Systems Curious Trivia about the Relational Model Entity Engine Concepts Datasources Entity Delegators Entity Groups Defining Our First Entity Assigning Our Entity to an Entity Group Loading Our Entity into the Entity Engine Seeing Our First Entity Using Our First Entity Creating a Drop-Down Populating the Drop-Down Expiring a Value Un-Expiring a Value Anatomy of an Element The Element The Element The Element The Element Relation Types One-to-One Relations One-to-Many Relations One-to-One Relations with No Foreign Keys View Entities Anatomy of a The Element The and Elements The Element The Element Applying Functions on Fields Counting the Number of Records Counting Distinct Records [ vi ] 162 163 165 165 166 172 173 175 176 176 176 176 177 177 177 178 179 179 180 180 181 183 184 186 187 187 187 188 189 189 194 196 196 196 199 200 201 201 202 206 209 209 209 210

Arithmetic Aggregate Functions Uppercase and Lowercase Functions Grouping for Summary Views Complex Aliases Nested Elements Extending Entities Summary Chapter 8: Accessing the Entities and View Entities Setting-Up Our Playground The Script Processor The Generic Screen Creating the Screen Widget Creating the Form Widget Creating the FreeMarker File Publishing Our Generic Screen Testing Our Playground GenericValue Objects Creating a Database Record Why a Map is Used? Updating Database Records Deleting Database Records Retrieving Database Records Find Records by Conditions Conditions Comparison Operators (EntityComparisonOperator) Condition Lists Condition Joiners (EntityJoinOperator) Tools for Common Styles of Conditions Conditions Joined by AND Conditions Joined by OR Counting the Number of Records Retrieved OFBiz Date Condition Getting Related Records One-to-One Relations One-to-Many Relations Utilities for Post-Query processing Post-Query Ordering Post-Query Filtering by Conditions Post-Query Filtering by Date Other Post-Query Filtering Methods Using the Entity Engine Cache Dynamic View Entities Left Outer Joins with the Dynamic View Entity Performing the Lookup [ vii ] Table of Contents 210 210 211 211 212 213 214 217 218 218 219 219 220 220 222 222 223 224 224 225 226 226 227 228 228 231 232 238 238 239 240 241 243 243 244 245 246 247 248 250 251 252 256 257

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