To be able to create objects from XML elements, the unmarshaller must have an object factory with methods for creating all sorts of objects. Therefore, each package containing JAXB classes must contain one class ObjectFactory, annotated with XmlRegis…

问题现象:XE8开发数据访问程序时放入了FDPhysMSSQLDriverLink1.FDConnection1.FDConnection1.FDQuery1.DBGrid1,设计期没法,运行期报"Object factory for class{xx-xx-xx-xx-xx} is missing. To register it, you can drop component[TFDGUIxWaitCursor] into your project.". 问题原因:群里朋友说是少个注…

Usually hidden in the middle of the list of the classes derived from the types defined in an XML schema there will be one class called ObjectFactory. It's convenient to use the methods of this class because they provide an easy way of creating elemen…

If JAXB binds a class to XML, then, by default, all public members will be bound, i.e., public getter and setter pairs, or public fields. Any protected, package-visible or private member is bound if it is annotated with a suitable annotation such as …

The basic annotation for a field that's intended to be an element is XmlElement. It permits you to define the XML element name, the namespace, whether it is optional or nillable, a default value and the Java class. Here are two annotated fields, and…

For some Java container types JAXB has no built-in mapping to an XML structure. Also, you may want to represent Java types in a way that is entirely different from what JAXB is apt to do. Such mappings require an adapter class, written as an extensio…

A class that describes an XML element that is to be a top-level element, i.e., one that can function as an XML document, should be annotated with XmlRootElement. Its optional elements are name and namespace. By default, the class name is used as the…

This annotation can only be used with a package. It defines parameters that are derived from the xsd:schema element. It must be written on a file package-info.java situated in the package. Below is an example, specifying the namespace and elementForm…

Provided that XML lets you represent a data item as a single value, there is no cut-and-dried rule for deciding between using an element or an attribute. (If you look for guidance, the schema describing the XML Schema language itself, making judiciou…

The annotation XmlSchemaType defines a mapping between an arbitrary Java type and a simple schema built-in type. Most of the time the default mapping is satisfactory, but every now and then an alternative may be more convenient. Let's assume that the…