Page History

...

• "property1.property2": Both properties are looked up in the same way as mentioned above. If the property1 evaluates to null and there exists a setter with name property1 on the model object and the class representing the class representing property1 has a default constructor then a new instance will be constructed and assigned on the model object via the property1 and the property2 will be set on this new object.

...

Index or map properties can be alternatively written as: {{"property\[index\]"}} or {{"property\[key\]"}}.

For example, if we have a following class:

public static class Person {
  private String name;

  private Person parent;

  public String getName() {
    return name;
  }

  public void setName(String name) {
    this.name = name;
  }

  public Person getParent() {
    return parent;
  }

  public void setParent(Person parent) {
    this.parent = parent;
  }
}

Then we can use the following expressions:

• name can be used to access getters and setter for the name property
• parent.name can be used to retrieve or set the name of a parent. If there is no parent set (i. e. it is null), a new instance of Person is created and set on the model object. Thereafter a name property is get/set on this new instance.