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Overview
Setup Instructions
Component Modules
Android
Google App Engine
Batching
Media Download
Media Upload
OAuth 2.0
Timeouts and Errors
Support

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Batching

Each HTTP connection that your client makes results in overhead. To reduce overhead, you can batch multiple API calls together into a single HTTP request.

The main classes of interest are BatchRequest and JsonBatchCallback. The following example shows how to use these classes with service-specific generated libraries:

JsonBatchCallback<Calendar> callback = new JsonBatchCallback<Calendar>() {
  public void onSuccess(Calendar calendar, HttpHeaders responseHeaders) {
    printCalendar(calendar);
    addedCalendarsUsingBatch.add(calendar);
  }
  public void onFailure(GoogleJsonError e, HttpHeaders responseHeaders) {
    System.out.println("Error Message: " + e.getMessage());
  }
};
...
Calendar client = Calendar.builder(transport, jsonFactory, credential)
  .setApplicationName("BatchExample/1.0").build();
BatchRequest batch = client.batch();
Calendar entry1 = new Calendar().setSummary("Calendar for Testing 1");
client.calendars().insert(entry1).queue(batch, callback);
Calendar entry2 = new Calendar().setSummary("Calendar for Testing 2");
client.calendars().insert(entry2).queue(batch, callback);
batch.execute();

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