Discover a set of tools to generate XML within your developments through two different ways (DOM, SAX).

Export XML DOM

One of the approaches to produce an XML structure is to write directly the structure sequentially in a disc file.
This database example shows another approach. The idea is to generate a DOM tree in memory (DOM export).
Two examples are provided. In the first of them, records are written in a DOM tree created for the purpose. In the second example, a model is used (an empty structure).

Import SAX

There are two approaches in 4D to read an XML structure. A DOM tree can be generated in memory or analyze structure sequentially from a disc file. This demonstration shows this last approach, a SAX import.

Export XML SAX

This is a different approach than the DOM export to produce a XML structure. Here the structure is written directly and sequentially in a disc file.
This database example shows the approach called “SAX”.

Chercher par xPath

This database example shows how to use DOM Find XML element command to read again easily a value from an XML tree.

An object method shows how the XML doc is stored in memory in, a DOM tree. Then, the form method illustrates how to delete this tree from memory. Finally, objects methods of some buttons show XPath notation to access to a value of the memory.

XML_Validation

One of the innovating contribution of the XML formalism is to let validating an XML structure compared with a predefined template. Several standards exist to define these templates. 4D v11 SQL lets validating DTD and XML schemas of the W3C.

Choix formulaire

This database example shows how to choose an intput form depending on the data or the User action.

Formulaire multi-pages

Forms can contain several pages. The advantage is to be able to organize several objects on a form.

Numero Ligne Affichée

This database example shows how to use “Displayed line number” command to alternate different background colors on the lines of output forms.

Saisie Liste

This database example shows how to use the new syntax of the SET ENTERABLE command, that shows to the developer to authorize or not, on the fly, entry in list.

Marquer enregistrements

This database example shows how to use HIGHLIGHT RECORDS and GET HIGHLIGHTED RECORDS with a set of records.

Formulaires hérités

This database example shows how to use inherited forms and the 0 page of the 4D forms.

Boutons 3D

Cet exemple vous explique comment utiliser les boutons 3D.

Cacher ou Afficher la Barre de Menus

This example explains how to use hide or display the Menu Bar.