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Chapter 51

Describes how to connect two G2 processes and pass data between them.

Introduction

Exchanging Data Using the G2 to G2 Interface

Using the G2 to G2 Interface

Creating Data Interface Objects

Naming the Interface Object

Identifying Attributes

Setting the Warning Message Level

Defining the Connection Details

Specifying the Protocol to Use

Setting the Interface Timeout Interval

Obtaining the Current Connection Status

Using Whenever Rules That Refer to the Connection Status

Starting the G2 Processes

Activating Data Interface Objects

The g2-to-g2-data-interface Class

Creating Data Interface Subclasses

Using Remote Data Service

Creating a G2-to-G2 Variable

Specifying the G2 Data Interface

Defining the Remote G2 Expression

Considering Network Access Configurations

Example of Remote Data Service

Using Remote Procedure Calls

Creating and Declaring a Remote Procedure

Using an Alternative Procedure Name

Invoking Remote Procedures

Starting a Remote Procedure

Calling a Remote Procedure

Value and Item Passing Arguments and Return Types for RPCs

Considerations for Item Passing

Creating Compatible Definitions

Aligning User-Defined Attributes

Accumulating Transient Items

Value Passing

Configuring the KB for Value Passing

Example of Passing an Integer Value

Example of Passing a Structure Value

Passing an Item as a Network Handle

Configuring the KB for Item Passing as a Network Handle

Obtaining Network Handles

Obtaining a Network Handle Using a System Procedure

Example of Obtaining a Network Handle

Example of Passing an Item as a Handle

Passing Variables and Parameters

Passing a Variable or Parameter as a Copy or Handle

Passing the Current Value of a Variable or Parameter

Passing User- and System-Defined Classes

Configuring the KB for Passing an Item with Attributes

Passing an Entire Item or a Specific Attribute Set

Item-passing Examples in this Chapter

Passing A Copy of Any Item

Including and Excluding Attributes

Passing An Item Including User-Defined Attributes

Example of Passing an Item Including User-Defined Attributes

Passing An Item Excluding User-Defined Attributes

Passing Attributes With Object Values

Example of Passing an Attribute With an Object Value

Passing An Item With System-Defined Attributes

Examples of Passing System-Defined Attributes

Passing Both User- and System-Defined Attributes

Passing An Item With Attributes and A Handle

Specifying One or More Remaining Arguments

Example of Passing Remaining Arguments

Dragging Items Between G2 Processes

Configuring Classes for Drag and Drop

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