Apex Developer Guide

Apex Developer Guide
Getting Started with Apex
Writing Apex
Running Apex
Invoking Apex
Apex Transactions and Governor Limits
Using Salesforce Features with Apex
Actions
Approval Processing
Authentication
Chatter Answers and Ideas
Chatter in Apex
Moderate Chatter Private Messages with Triggers
Moderate Feed Items with Triggers
Communities
Email
Metadata
Platform Cache
Salesforce Knowledge
Salesforce Files
Salesforce Connect
Salesforce Connect
Apex Considerations for Salesforce Connect External Objects
Writable External Objects
Get Started with the Apex Connector Framework
Key Concepts About the Apex Connector Framework
External IDs for Salesforce Connect External Objects
Authentication for Salesforce Connect Custom Adapters
Callouts for Salesforce Connect Custom Adapters
Paging with the Apex Connector Framework
queryMore with the Apex Connector Framework
Aggregation for Salesforce Connect Custom Adapters
Filters in the Apex Connector Framework
Evaluating Filters in the Apex Connector Framework
Compound Filters in the Apex Connector Framework
Considerations for the Apex Connector Framework
Apex Connector Framework Examples
Salesforce Reports and Dashboards API via Apex
Salesforce Sites
Support Classes
Territory Management 2.0
Flows
Integration and Apex Utilities
Debugging, Testing, and Deploying Apex
Apex Language Reference
Appendices
Glossary
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Filters in the Apex Connector Framework

The DataSource.QueryContext contains one DataSource.TableSelection. The DataSource.SearchContext can have more than one TableSelection. Each TableSelection has a filter property that represents the WHERE clause in a SOQL or SOSL query.

For example, when a user goes to an external object’s record detail page, your DataSource.Connection is executed. Behind the scenes, we generate a SOQL query similar to the following.

This SOQL query causes the query method on your DataSource.Connection class to be invoked. The following code can detect this condition.

This code example assumes that you implemented a findSingleResult method that returns a single record, given the selected ExternalId. Make sure that your code obtains the record that matches the requested ExternalId.