Using Caché Objects - InterSystems Documentation

10.4.4 Modfiying Array Properties ........................................................................ 78
10.4.5 Modifying Stream Properties ..................................................................... 80
10.5 Saving Objects ..................................................................................................... 81
10.6 Deleting Objects ................................................................................................... 81
10.6.1 Deleting a Single Object ............................................................................. 82
10.6.2 Deleting All Objects in an Extent ............................................................... 82
10.7 Executing Queries ................................................................................................ 83
10.7.1 Query Metadata Methods ........................................................................... 83
10.7.2 Preparing Queries for Execution ................................................................ 84
10.7.3 Executing Queries ...................................................................................... 85
10.7.4 Processing Query Results ........................................................................... 85
10.7.5 Closing Queries .......................................................................................... 86
10.7.6 Example of Using a Class Query ............................................................... 86
11 Data Types .................................................................................................................... 89
11.1 Available Types .................................................................................................... 90
11.2 Operation .............................................................................................................. 91
11.2.1 Using Data Types in Classes ...................................................................... 91
11.2.2 Parameters .................................................................................................. 91
11.2.3 Keywords .................................................................................................... 93
11.2.4 Data Formats and Translation Methods ...................................................... 96
11.3 Enumerated Properties ......................................................................................... 97
12 Object Persistence ........................................................................................................ 99
12.1 The %Persistent Class .......................................................................................... 99
12.2 The Persistence Interface ................................................................................... 100
12.2.1 Saving Objects .......................................................................................... 100
12.2.2 Opening Objects ....................................................................................... 103
12.2.3 Deleting Objects ....................................................................................... 106
12.2.4 Testing if Objects Exist ............................................................................ 107
12.3 Object Extents .................................................................................................... 107
12.3.1 The Extent Query ..................................................................................... 108
12.4 Storage Definitions and Storage Classes ........................................................... 109
12.4.1 The %CacheStorage Storage Class .......................................................... 110
12.4.2 The %CacheSQLStorage Storage Class ................................................... 110
12.5 Schema Evolution .............................................................................................. 110
12.5.1 Resetting the Storage Definition .............................................................. 111
13 Objects and SQL ........................................................................................................ 113
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Using Caché Objects