Principle

The Nashorn engine is used to execute scripts within the JVM. JavaScript syntax and Java classes loaded into the JVM can be used to add specific logic to a process.

Access to Java classes

Nashorn allows access to Java classes to instantiate objects or call their methods.

Instantiate an object

In order to instantiate an object or call a static method of a Java class, the full class name must be specified or a reference to the class must be obtained.

var document = new com.flower.docs.domain.document.Document();

var Document = com.flower.docs.domain.document.Document;
var document = new Document();

To facilitate the development of scripts using the objects provided by FlowerDocs, certain classes can be directly named without using their full name or a reference.

Restrictions

For security reasons, a specific class loader is used to execute the scripts in the JVM. Access to certain classes is therefore restricted. This can be disabled using the secured.classloader.enabled=false property. If required, certain classes or packages can be defined as secured using the secured.classloader.whitelist.additional property.