Using Caché Objects - InterSystems Documentation

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17 Object Synchronization ............................................................................................. 145 17.1 About Updates .................................................................................................... 145 17.1.1 The GUID ................................................................................................. 146 17.1.2 How Updates Work ................................................................................... 146 17.1.3 The SyncSet and SyncTime Objects ........................................................ 147 17.2 Running an Update ............................................................................................ 150 17.2.1 Preparing for the Update .......................................................................... 150 17.2.2 The Update Itself ...................................................................................... 151 17.3 Other Topics ....................................................................................................... 153 17.3.1 Translating Between GUIDs and OIDs .................................................... 154 17.3.2 Manually Updating a SyncTime Table ..................................................... 154 18 Method Generators ................................................................................................... 155 18.1 Defining a Method Generator ............................................................................ 155 18.2 How Method Generators Work .......................................................................... 156 18.3 Method Generator Context ................................................................................. 157 18.4 Implementing Method Generators ..................................................................... 158 18.4.1 Method Generators for Other Languages ................................................. 159 18.4.2 Specifying CodeMode within a Method Generator ................................. 159 19 The Caché Data Population Utility .......................................................................... 161 19.1 Data Population Basics ...................................................................................... 161 19.1.1 Changes to the Class Definition ............................................................... 162 19.1.2 Populating Objects ................................................................................... 162 19.2 The POPSPEC Parameter .................................................................................. 163 19.2.1 Populating Embedded Objects ................................................................. 165 19.2.2 Populating Lists ........................................................................................ 165 19.2.3 Populating Arrays ..................................................................................... 166 19.2.4 Custom Populate Actions ......................................................................... 166 19.3 Details ................................................................................................................ 167 20 Using Callback Methods ........................................................................................... 169 20.1 %OnAddToSaveSet ............................................................................................ 170 20.2 %OnAfterSave ................................................................................................... 171 20.3 %OnBeforeSave ................................................................................................. 172 20.4 %OnClose .......................................................................................................... 172 20.5 %OnConstructClone .......................................................................................... 173 20.6 %OnDelete ......................................................................................................... 174 20.7 %OnDetermineClass .......................................................................................... 174 viii Using Caché Objects
20.8 %OnNew ............................................................................................................ 175 20.9 %OnOpen ........................................................................................................... 175 20.10 %OnRollBack .................................................................................................. 176 20.11 %OnValidateObject .......................................................................................... 176 20.12 OnPopulate ....................................................................................................... 177 21 Object-Specific ObjectScript Features .................................................................... 179 21.1 .. Syntax ............................................................................................................. 179 21.2 ##Class Syntax ................................................................................................... 180 21.2.1 Invoking a Class Method .......................................................................... 180 21.2.2 Casting a Method ...................................................................................... 180 21.3 ##this Syntax ...................................................................................................... 181 21.4 ##super Syntax ................................................................................................... 183 21.5 i% Syntax ............................................................................... 184 22 Dynamic Dispatch ...................................................................................................... 187 22.1 How Dynamic Dispatch Happens ...................................................................... 187 22.2 Content of Methods Implementing Dynamic Dispatch ..................................... 188 22.2.1 Return Values ............................................................................................ 189 22.3 The Dynamic Dispatch Methods ........................................................................ 189 22.3.1 %DispatchMethod .................................................................................... 189 22.3.2 %DispatchClassMethod ........................................................................... 190 22.3.3 %DispatchGetProperty ............................................................................. 190 22.3.4 %DispatchSetProperty .............................................................................. 190 22.3.5 %DispatchSetMultidimProperty .............................................................. 191 22.3.6 %DispatchGetModified ............................................................................ 191 22.3.7 %DispatchSetModified ............................................................................ 191 23 Class Definition Classes ............................................................................................ 193 23.1 Browsing Class Definitions ............................................................................... 194 23.2 Altering Class Definitions .................................................................................. 195 24 Internet Classes .......................................................................................................... 197 24.1 Email .................................................................................................................. 197 24.1.1 Mail Messages .......................................................................................... 197 24.1.2 Sending Email .......................................................................................... 198 24.1.3 Receiving Email ....................................................................................... 198 24.2 FTP ..................................................................................................................... 199 24.3 HTTP .................................................................................................................. 199 Using Caché Objects ix
Page 1 and 2: Using Caché Objects Version 5.2 01
Page 3 and 4: Table of Contents 1 Introduction to
Page 5 and 6: 7 Properties ......................
Page 7: 13.1 Inheritance and SQL ..........
Page 11 and 12: List of Figures Embeddable Objects
Page 13 and 14: 1 Introduction to Caché Objects Th
Page 15 and 16: 1.2 Class Definitions and the Class
Page 17 and 18: Development Tools Caché Class Libr
Page 19 and 20: • The Caché EJB Binding—a vers
Page 21 and 22: 2 Object-Oriented Database Developm
Page 23 and 24: Encapsulation Caché exploits inher
Page 25 and 26: 3 The Caché Object Model The Cach
Page 27 and 28: Referring to an Object — OREF, OI
Page 29 and 30: Types of Classes 3.2.1 Transient Ob
Page 31 and 32: Types of Classes Embeddable Objects
Page 33 and 34: A class inherits all of the specifi
Page 35: 2. It resolves inheritance—it det
Page 38 and 39: Caché Classes • Class Parameters
Page 40 and 41: Caché Classes ClientDataType Descr
Page 42 and 43: Caché Classes Internally, this wor
Page 44 and 45: Packages Class Packages Any of thes
Page 46 and 47: Packages Letting the compiler resol
Page 48 and 49: Packages • “%Library” —any
Page 50 and 51: Methods where count and state are d
Page 52 and 53: Methods 6.4 Method Language You hav
Page 54 and 55: Methods 6.6 Instance and Class Meth
Page 56 and 57: Methods Write dog.Speak() Which cou
Page 58 and 59:
Properties 7.1 Property Keywords Yo
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Properties Property Behavior The pr
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Properties 7.5 Attribute Properties
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Properties You can manipulate a col
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8 Class Queries Class queries provi
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Query Basics Final Specifies that s
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Caché ObjectScript. These queries
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The data in Row is the result of ex
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9 Indices Indexes provide a mechani
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Index Collation 9.2 Index Collation
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10 Using Objects with Caché Object
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Executing Methods 10.1.3 Executing
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Opening Objects 10.3 Opening Object
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where oref is the OREF of the speci
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For example, to populate the Home p
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change the second vaccination recor
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There are two types of array proper
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Saving Objects 10.5 Saving Objects
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mation. Again, this method deletes
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Set rset = ##class(%ResultSet).%New
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Executing Queries // Create a Resul
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Data Types 11.1 Available Types Cac
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Data Types • INDEXSUBSCRIPTS —
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Data Types CLIENTDATATYPE Values Va
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Data Types SQLCATEGORY Values Value
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Data Types The property is restrict
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Object Persistence 1. Its primary (
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Object Persistence Note: In a multi
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Object Persistence // Open person "
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Object Persistence For example: //
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Object Persistence If a persistent
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Object Persistence The storage clas
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13 Objects and SQL A key aspect of
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The Object-SQL Projection 13.2 The
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The Object-SQL Projection 13.2.2.1
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The Object-SQL Projection • The p
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If the list for a particular instan
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Triggers are, however, fired by the
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14 Relationships A relationship is
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Relationship Basics the relationshi
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An Invoice class class MyApp.Invoic
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14.4 Persistent Behavior of Relatio
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Streams Stream data may be stored i
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Streams 15.2.2 Copying Data between
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Streams Set stream=##class(%Stream.
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16 Class Projections Class projecti
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RemoveProjection The RemoveProjecti
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17 Object Synchronization Object sy
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About Updates • If two changes re
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About Updates Two Synchronized Data
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• classname is a quoted string th
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Set Status = TargetSyncSet.Import(f
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18 Method Generators A powerful fea
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Method Generator Context 6. It copi
Page 171:
Implementing Method Generators 3. A
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The Caché Data Population Utility
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Page 178 and 179:
Page 180 and 181:
Page 182 and 183:
Using Callback Methods Since differ
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Using Callback Methods ReturnValue
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Using Callback Methods 20.6 %OnDele
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Using Callback Methods 20.10 %OnRol
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21 Object-Specific ObjectScript Fea
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##this Syntax >Do ##class(Package.C
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##super Syntax 21.4 ##super Syntax
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You can override a property's defau
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Dynamic Dispatch 22.2 Content of Me
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Dynamic Dispatch %DispatchMethod ca
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23 Class Definition Classes The Cac
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You can get detailed information ab
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Internet Classes addressed to , its
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Internet Classes For more informati
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Object Concurrency Setting 1 2 3 4
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Object Concurrency Note: You can us
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