Connecting to Data
Working With Queries
Writing Data
Working with DataTables
Working with DataSets
Working with Components
Working With Data Events
Working with Themes
Utilities
Discovery
Service providers can tell consumers what type of functionality they can support through the
allow method on a data source.The
allow().discover property lets consumers know that the service provider will allow meta data to be retrieved from the data service. In the example below, an application checks whether the service provider will allow discovery and then asks the data service for a list of fields on the
sales table.1
const accountService = new wire.data.DataSource("table", {
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Provider: {
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Server: "query-server"
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}
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});
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​
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if(accountService.allow().discover) {
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const options = { table: "sales" };
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const entities = await accountService.discoverFieldsAsync(options);
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}
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​
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​
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For a full list of discovery methods, visit the wire.data.DataSource reference . For a full list of
allow attributes supported by a service provider, visit the service provider documentation.​
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