ArcGIS Engine Developer Guide

GLOSSARY
network
object
Object Definition Language
object library
object model diagram
object pooling
object-oriented programming
OCX
ODL
OGIS
OLB
OLE
OLE custom control
OLEView
out-of-process
1. A set of edge, junction, and turn elements and the connectivity between them,
also known as a logical network. In other words, an interconnected set of lines
representing possible paths from one location to another. A city streets layer is an
example of a network. 2. In computing, a group of computers that share software,
data, and peripheral devices, as in a local or wide area network (LAN or WAN).
In object-oriented programming, an instance of the data structure and behavior
defined by a class.
Similar to Interface Definition Language but used to define the objects contained
in an object library. See also Interface Definition Language, object library.
A binary file that stores information about a logical collection of COM objects
and their properties and methods in a form that is accessible to other applications
at runtime. Using a type library, an application or browser can determine which
interfaces an object supports and invoke an object’s interface methods.
A graphical representation of the types in a library and their relationships.
The process of precreating a collection of instances of classes, such that the
instances can be shared between multiple application sessions at the request level.
Pooling objects allows the separation of potentially costly initialization and
aquisition of resources from the actual work the object does. Pooled objects are
used in a stateless manner.
A programming model in which developers define the data type of a data structure
as well as the functions, or types of operations, that can be applied to the
data structure. Developers can also create relationships between objects. For
example, objects can inherit characteristics from other objects.
See OLE custom control.
See Object Definition Language.
Open Geodata Interoperability Specification. A specification, developed by the
Open GIS Consortium, Inc., to support interoperability of GIS systems in a
heterogeneous computing environment.
See object library.
Object Linking and Embedding. A distributed object system and protocol from
Microsoft that allows applications to exchange information. Applications using
OLE can create compound documents that link to data in other applications. The
data can be edited from the document without switching between applications.
Based on the Component Object Model, OLE allows the development of reusable
objects that are interoperable across multiple applications.
Also known as an ActiveX control, an OLE custom control is contained in a file
with the extension .ocx. The ArcGIS controls are ActiveX controls.
A utility, available as part of Microsoft Visual Studio, that can be used to view
type information stored in a type library or object library or inside a DLL.
Within the process space of a client application, a component contained in an
EXE is out-of-process; instantiated classes are loaded into the process space of
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