Using Caché Objects - InterSystems Documentation

More documents

Recommendations

Info

List of Tables Caché Class Library Packages .............................................................................................. 5 Class Identifier Lengths ...................................................................................................... 26 Collection Objects .............................................................................................................. 51 Caché Data Type Classes .................................................................................................... 90 Supported Parameters for System Data Type Classes ........................................................ 92 CLIENTDATATYPE Values ............................................................................................... 94 ODBCTYPE Values ............................................................................................................ 95 SQLCATEGORY Values .................................................................................................... 96 The Object-SQL Projection .............................................................................................. 115 Sample Projection of an Array Property ........................................................................... 119 Sample Projection of a List Property ................................................................................ 120 Projection Classes ............................................................................................................. 144 Objects Available to Method Generators .......................................................................... 157 xii Using Caché Objects
1 Introduction to Caché Objects This document provides an in-depth look at the details of Caché Objects. If you are new to Caché Objects, you may find the Caché Web Applications Tutorial tutorial to be a useful introduction. Caché Objects is a set of technologies that give application developers the means to easily create high performance, object-based, database applications. The features of Caché Objects include: • A powerful object model that includes inheritance, properties, methods, collections, relationships, user-defined data types, and streams. • A flexible object persistence mechanism that allows objects to be stored within the native Caché database as well as external relational databases. • Control over the database aspects of persistent classes including indices, constraints, and referential integrity. • An easy-to-use transaction and concurrency model that includes the ability to load objects by navigation—simply referring to an object can “swizzle” it into memory from the database. • Automatic integration with Caché SQL via the Caché Unified Data Architecture. • Interoperability with Java, C++, and ActiveX. • Automatically-provided XML support. • A powerful, multi-user object development environment: Caché Studio. You can use Caché Objects in a myriad of ways including: Using Caché Objects 1
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 and 8: 13.1 Inheritance and SQL ..........
Page 9 and 10: 20.8 %OnNew .......................
Page 11: List of Figures Embeddable Objects
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
Page 60 and 61: Properties Property Behavior The pr
Page 62 and 63:
Properties 7.5 Attribute Properties
Page 64 and 65:
Properties You can manipulate a col
Page 67 and 68:
8 Class Queries Class queries provi
Page 69 and 70:
Query Basics Final Specifies that s
Page 71 and 72:
Caché ObjectScript. These queries
Page 73 and 74:
The data in Row is the result of ex
Page 75 and 76:
9 Indices Indexes provide a mechani
Page 77 and 78:
Index Collation 9.2 Index Collation
Page 79 and 80:
10 Using Objects with Caché Object
Page 81 and 82:
Executing Methods 10.1.3 Executing
Page 83 and 84:
Opening Objects 10.3 Opening Object
Page 85 and 86:
where oref is the OREF of the speci
Page 87 and 88:
For example, to populate the Home p
Page 89 and 90:
change the second vaccination recor
Page 91 and 92:
There are two types of array proper
Page 93 and 94:
Saving Objects 10.5 Saving Objects
Page 95 and 96:
mation. Again, this method deletes
Page 97 and 98:
Set rset = ##class(%ResultSet).%New
Page 99:
Executing Queries // Create a Resul
Page 102 and 103:
Data Types 11.1 Available Types Cac
Page 104 and 105:
Data Types • INDEXSUBSCRIPTS —
Page 106 and 107:
Data Types CLIENTDATATYPE Values Va
Page 108 and 109:
Data Types SQLCATEGORY Values Value
Page 110 and 111:
Data Types The property is restrict
Page 112 and 113:
Object Persistence 1. Its primary (
Page 114 and 115:
Object Persistence Note: In a multi
Page 116 and 117:
Object Persistence // Open person "
Page 118 and 119:
Object Persistence For example: //
Page 120 and 121:
Object Persistence If a persistent
Page 122 and 123:
Object Persistence The storage clas
Page 125 and 126:
13 Objects and SQL A key aspect of
Page 127 and 128:
The Object-SQL Projection 13.2 The
Page 129 and 130:
The Object-SQL Projection 13.2.2.1
Page 131 and 132:
The Object-SQL Projection • The p
Page 133 and 134:
If the list for a particular instan
Page 135 and 136:
Triggers are, however, fired by the
Page 137 and 138:
14 Relationships A relationship is
Page 139 and 140:
Relationship Basics the relationshi
Page 141 and 142:
An Invoice class class MyApp.Invoic
Page 143:
14.4 Persistent Behavior of Relatio
Page 146 and 147:
Streams Stream data may be stored i
Page 148 and 149:
Streams 15.2.2 Copying Data between
Page 150 and 151:
Streams Set stream=##class(%Stream.
Page 153 and 154:
16 Class Projections Class projecti
Page 155 and 156:
RemoveProjection The RemoveProjecti
Page 157 and 158:
17 Object Synchronization Object sy
Page 159 and 160:
About Updates • If two changes re
Page 161 and 162:
About Updates Two Synchronized Data
Page 163 and 164:
• classname is a quoted string th
Page 165 and 166:
Set Status = TargetSyncSet.Import(f
Page 167 and 168:
18 Method Generators A powerful fea
Page 169 and 170:
Method Generator Context 6. It copi
Page 171:
Implementing Method Generators 3. A
Page 174 and 175:
The Caché Data Population Utility
Page 176 and 177:
Page 178 and 179:
Page 180 and 181:
Page 182 and 183:
Using Callback Methods Since differ
Page 184 and 185:
Using Callback Methods ReturnValue
Page 186 and 187:
Using Callback Methods 20.6 %OnDele
Page 188 and 189:
Using Callback Methods 20.10 %OnRol
Page 191 and 192:
21 Object-Specific ObjectScript Fea
Page 193 and 194:
##this Syntax >Do ##class(Package.C
Page 195 and 196:
##super Syntax 21.4 ##super Syntax
Page 197:
You can override a property's defau
Page 200 and 201:
Dynamic Dispatch 22.2 Content of Me
Page 202 and 203:
Dynamic Dispatch %DispatchMethod ca
Page 205 and 206:
23 Class Definition Classes The Cac
Page 207:
You can get detailed information ab
Page 210 and 211:
Internet Classes addressed to , its
Page 212 and 213:
Internet Classes For more informati
Page 214 and 215:
Object Concurrency Setting 1 2 3 4
Page 216 and 217:
Object Concurrency Note: You can us
show all

Using Caché Objects - InterSystems Documentation

Create successful ePaper yourself

Delete template?

Save as template?