Orbeon Forms
  • Getting started
  • Installation
    • Logging
    • Configuration banner
    • Docker
    • Azure
    • Tomcat
    • WildFly
    • WebSphere
    • WebLogic
    • GlassFish
    • Caches
    • Replication
    • Upgrading
  • Configuration
    • Properties
      • General
        • HTTP client
      • Form Runner
        • Detail page
          • Attachments
          • Email properties
          • PDF
          • Table of contents
        • Persistence
        • Summary page
      • Form Builder
      • XForms
    • Advanced
      • Workflows
      • Session management
      • State handling
      • Client-side error handling
      • Clustering and High Availability
      • Configuring a Form Runner eXist database
      • Creating a production WAR
      • Environments
      • JavaScript and CSS assets
      • Limiter filter
      • Run modes
      • Security
        • Content-Security-Policy header
      • SAP Hybris Module
      • XForms logging
    • Troubleshooting
      • Troubleshooting with the orbeon.log
      • Memory and threads
      • Relational database logging
      • Misc
  • Form Builder
    • Form settings
      • Time window
    • Form editor
      • Form area
      • Toolbox
      • Buttons bar
      • Control settings
      • Dependent fields and sections
      • Validation
      • Choices editor
      • Publishing
      • Cut, copy and paste
      • Section and grid settings
      • Section settings
      • Grid settings
      • Quick control search
      • Repeat settings
      • Repeated grids
      • Undo and redo
      • Keyboard shortcuts
    • Formulas
      • Examples of formulas
      • Formulas inspector
      • Formulas console
    • Summary page
    • Form localization
    • Advanced
      • Edit source
      • Services and actions
        • HTTP services
        • Database services
        • Simple Actions
        • Action Syntax
        • Action Syntax examples
        • Synchronizing repeated content
      • Testing a form in web mode
      • Testing PDF production
      • Testing offline functionality
      • Email Settings dialog
      • Field-level encryption
      • Messages
      • Section templates
      • Template syntax
      • XML Schemas support
      • Extensibility
        • Extension API
        • Integration
        • Toolbox component metadata
  • Form Runner
    • Overview
      • Terminology
    • Pages
      • Landing page
      • Published Forms page
      • Forms Admin page
      • Summary page
    • Components
      • Alert dialog
      • Attachment
      • Autocomplete
      • Captcha
      • Character counter
      • Checkbox input
      • Currency
      • Date
      • Dropdown date
      • Static and dynamic dropdown
      • Error summary
      • Grid
      • Handwritten signature
      • Hidden field
      • Image
      • Image annotation
      • Image attachment
      • Number
      • Open selection
      • Repeater
      • Formatted Text / Rich Text Editor
      • Section
      • Single-selection tree
      • Source code editor
      • Time
      • US phone
      • US state
      • Video
      • Video attachment
      • Wizard
      • XForms inspector
      • Yes/No answer
    • Features
      • Automatic calculations dependencies
      • Datasets
      • Excel and XML import
      • Excel and XML export
      • Summary page Excel Export
      • Form definitions and form data Zip Export
      • Purging historical data
      • Lease
      • Localization
      • Supported languages
      • Mobile support
      • Multitenancy
      • Form Runner navigation bar
      • PDF production
        • Automatic PDF
        • Automatic PDF header and footer configuration
        • PDF templates
      • Responsive design
      • Revision history
      • S3 storage
      • Simple data migration
      • TIFF production
      • Versioning
      • Wizard view
      • Workflow stage
    • Persistence
      • Using a relational database
      • Relational database schema
      • Purging old data using SQL
      • Auditing
      • Autosave
      • Database support
      • Flat view
    • Linking and embedding
      • Linking
      • Java Embedding API
      • JavaScript Embedding API
      • Liferay full portlet
      • Liferay proxy portlet
      • Securing Form Runner access
      • Form Runner offline embedding API
      • Angular component
      • React component
    • Access control and permissions
      • Users
      • Login & Logout
      • Deployed forms
      • Form fields
      • Editing forms
      • Owner and group member
      • Organizations
      • Scenarios
      • Token-based permissions
    • Styling
      • CSS
      • Grids CSS
      • Automatic PDF styling and CSS
    • APIs
      • Authentication of server-side service APIs
      • Persistence API
        • CRUD API
        • Search API
        • List form data attachments API
        • Form Metadata API
        • Lease API
        • Reindexing API
        • Caching
        • Versioning
        • Revision History API
        • Zip Export API
        • Custom persistence providers
      • Other APIs
        • Connection context API
        • Duplicate form data API
        • File scan API
        • Form Runner JavaScript API
        • Generate XML Schema API
        • PDF API
        • Publish form definition API
        • Run form in the background API
      • Data formats
        • Form data
        • Date and time
        • Form definition
    • Architecture and integration
      • Architecture
      • Access form data
      • Integration
    • Advanced
      • Buttons and processes
        • Simple process syntax
        • Core actions
        • Form Runner actions
          • Save action
          • Send action
          • Email action
        • XForms actions
        • Predefined buttons, processes and dialogs
        • Summary page buttons and processes
      • Custom dialogs/model logic
      • Services
      • Singleton form
      • Monitoring HTTP requests
  • XForms
    • Core
      • Attribute Value Templates (AVTs)
      • Binds
      • Validation
      • Variables
      • Keyboard focus
      • XForms JavaScript API
      • Error handling
        • Detailed behavior
      • Model-Bind variables
      • XForms 2.0 support
    • Events
      • Standard support
      • UI refresh events
      • Keyboard events
      • Extension events
      • Extension context information
      • Other event extensions
    • Actions
      • Repeat, insert and delete
      • Scripting actions
      • Extensions
    • Controls
      • Label, hint, help
      • Input
      • Output
      • Text area
      • Button
      • Upload
      • Dialog
    • Submission
      • Standard support
      • JSON support
      • Asynchronous submissions
      • Caching extension
      • Other submission extensions
    • XPath
      • Type annotations
      • Expression analysis
      • Tips
      • Compatibility
      • Standard functions
      • Maps and arrays Functions
      • Extension functions
        • Core functions
        • Utility functions
        • Model functions
        • Controls functions
        • XML functions
        • JSON functions
        • HTTP functions
        • Form Runner functions
        • Other functions
        • Deprecated functions
    • XBL components
      • FAQ
      • Guide
        • XBL Tutorial
        • Bindings
        • XForms models
        • Including content
        • Event handling
        • Conventions
        • Map XBL example
        • Learning from existing components
      • Advanced topics
        • XBL Modes
        • JavaScript companion classes
        • XBL library
        • Extensions
        • Attachment controls
    • XForms tutorial
      • Introduction
      • Installation
      • The Hello application
      • The Bookcast application
        • The basic app
        • Database access
        • Polishing the app
        • Adding a feed
    • Using XForms from Java apps
  • XML Platform
    • Page Flow Controller
      • Basics
      • XML submission
      • Navigating between pages
      • Paths and matchers
      • Other configuration elements
      • Typical combinations of page model and page view
      • Examples
      • Authorizing pages and services
    • Processors
      • URL generator
      • Request generator
      • PDF to image converter
    • Resources
      • Resource managers
      • Setting up an external resources directory
    • Other
      • Binary and text documents
  • FAQ
    • Licensing
    • PE and Dev Support
    • Form Builder and Form Runner
    • Resources and support
    • Other technical questions
  • Contributors
    • Automated tests
    • Building Orbeon Forms
    • Localizing Orbeon Forms
    • Validation functions
    • Contributor License Agreement
  • Release notes
    • Orbeon Forms 2022.1.9
    • Orbeon Forms 2024.1.1
    • Orbeon Forms 2023.1.7
    • Orbeon Forms 2024.1
    • Orbeon Forms 2023.1.6
    • Orbeon Forms 2023.1.5
    • Orbeon Forms 2021.1.11
    • Orbeon Forms 2022.1.8
    • Orbeon Forms 2023.1.4
    • Orbeon Forms 2023.1.3
    • Orbeon Forms 2023.1.2
    • Orbeon Forms 2022.1.7
    • Orbeon Forms 2023.1.1
    • Orbeon Forms 2023.1
    • Orbeon Forms 2022.1.6
    • Orbeon Forms 2021.1.10
    • Orbeon Forms 2022.1.5
    • Orbeon Forms 2021.1.9
    • Orbeon Forms 2022.1.4
    • Orbeon Forms 2022.1.3
    • Orbeon Forms 2021.1.8
    • Orbeon Forms 2022.1.2
    • Orbeon Forms 2022.1.1
    • Orbeon Forms 2022.1
    • Orbeon Forms 2021.1.7
    • Orbeon Forms 2021.1.6
    • Orbeon Forms 2021.1.5
    • Orbeon Forms 2021.1.4
    • Orbeon Forms 2021.1.3
    • Orbeon Forms 2021.1.2
    • Orbeon Forms 2021.1.1
    • Orbeon Forms 2021.1
    • Orbeon Forms 2020.1.6
    • Orbeon Forms 2019.2.4
    • Orbeon Forms 2019.1.2
    • Orbeon Forms 2018.2.5
    • Orbeon Forms 2018.1.4
    • Orbeon Forms 2020.1.5
    • Orbeon Forms 2020.1.4
    • Orbeon Forms 2020.1.3
    • Orbeon Forms 2020.1.2
    • Orbeon Forms 2019.2.3
    • Orbeon Forms 2020.1.1
    • Orbeon Forms 2020.1
    • Orbeon Forms 2019.2.2
    • Orbeon Forms 2019.2.1
    • Orbeon Forms 2019.1.1
    • Orbeon Forms 2019.2
    • Orbeon Forms 2019.1
    • Orbeon Forms 2018.2.4
  • Release history
  • Use cases
  • Product roadmap
  • Index of features
Powered by GitBook
On this page
  • Rationale
  • Declaring an asynchronous submission
  • The xxf:join-submission action
  • Availability
  • Configuration
  • How things work
  1. XForms
  2. Submission

Asynchronous submissions

Rationale

  • Asynchronous submissions are specified in XForms 1.1.

  • There are interesting use cases for them, including:

    • Background autosave

    • Background loading of initial data from multiple services in parallel

Orbeon Forms supports true asynchronous submissions (with some limitations due to the client-server architecture of Orbeon Forms).

Declaring an asynchronous submission

You enable an asynchronous submission with mode="asynchronous":

<xf:submission 
    id="call-service" 
    mode="asynchronous"
    method="get" 
    resource="https://www.orbeon.com/ops/xforms-sandbox/service/zip-states"
    serialization="none" 
    xxf:cache="true"
    replace="instance" 
    targetref="instance('zip-states')"/>

This is useful for example to speed up the initial load of data from slow services when the page initializes because the background submissions can run in parallel, and at the same time the page can pursue its own initialization.

NOTE: While XForms 1.1 specifies that mode="asynchronous" should be the default, in Orbeon Forms mode="synchronous" is the default.

The xxf:join-submission action

Availability

Configuration

This extension action allows waiting until all pending background submissions have completed:

<xf:action ev:event="xforms-model-construct-done">
    <xf:send submission="query-people"/>
    <xf:send submission="query-places"/>
    <xxf:join-submissions/>
</xf:action>

In this example, upon xforms-model-construct-done, two background submissions are started. The <xxf:join-submissions> action waits until they both have completed.

This has two benefits:

  • For performance reasons, it might be a good idea to wait until they terminate before allowing the controls to initialize.

  • It might not make sense to show the initial page to the user if data for "people" and "places" is not available.

NOTE: If processing background submissions causes new background submissions to run, their results are processed as well.

NOTE: If the resulting instance is cacheable with xxf:cache="true" and already in cache, it is immediately retrieved and no background submission takes place._

NOTE: Optimized submissions and submissions with replace="all" are not supported in asynchronous mode.

How things work

The submissions are asynchronous in the following way:

  • The request itself (http:, https:, oxf: and file: are supported) runs in a separate execution thread

  • Deserialization of the response is also performed in that separate thread if needed:

    • for instance replacement, it creates an XML document (read-only or read-write)

    • for text replacement, it reads the text content as a String

The completion of asynchronous submission is checked at these time:

  • Just before sending the initial HTML page to the client

  • Upon receiving an Ajax request

  • Just before completing an Ajax request

When completed submissions are found, the result of each submission is processed:

  • Instance replacement or text replacement is done.

  • xforms-submit-done / xforms-submit-error are dispatched.

If an asynchronous submission is still running (pending) at the time an client HTTP connexion returns (whether an initial page load or an Ajax request):

  • The client is instructed to poll the server at regular intervals, or when an Ajax request is sent for other reasons.

  • Only once a client request reaches the server are pending asynchronous submission results processed.

The polling delay in milliseconds can be configured with the following property:

<property 
    as="xs:integer" 
    name="oxf.xforms.submission-poll-delay" 
    value="10000"/>
PreviousJSON supportNextCaching extension

Last updated 1 year ago

This is an feature.

Orbeon Forms PE