Validating xml against multiple xsd, associating a Document with a Schema
For the document to be properly validated, the schema for that namespace must be declared, as well as the schemas for the tax and hiring namespaces. Navigate to the samples directory. In general, fully qualified paths are recommended.
You do not specify the namespace name. If a prefix is defined for the tax namespace, and another prefix defined for the hiring namespace, then the personnel data could include segments like the following. If the schema definition does not define a target namespace, then it applies to the default unnamed, or null namespace. We will take a look at those next.
In this case, the schema is the file personal. So a namespace that does have a name can never be used as the default namespace.
Overview of the Validation Process
Validating with Multiple Namespaces Namespaces let you combine elements that serve different purposes in the same document without having to worry about overlapping names. This is done by calling the setValidating method on the DocumentBuilderFactory instance dbf, bchirpy dating services that was created in Instantiate the Factory.
The data set may include information from a tax declaration form as well as information from the employee's hiring form, with both elements named form in their respective schemas. Once again, use the file personal. What is new is the entry in the middle, which defines the locations of the schemas to use for each namespace referenced in the document. Here, we have chosen to run the program on the file personal-schema. Declaring the Schemas in the Application To declare the equivalent schemas in the application, the code would look something like the following.
When parsed, each element in the data set will be validated against the appropriate schema, as long as those schemas have been declared. You will see how to deal with multiple namespaces in the next section. Note - The default namespace is actually a specific namespace. In that way, only one copy of the schema will tend to exist. In general, though, it is a good idea to keep all the declarations together in one place.
You are seeing it here, because at this point you have learned enough about namespaces for the discussion to make sense. Instead, you only give pointers to the. Note, too, that in this example there is a default namespace that the unqualified element names employee and name belong to. Compile the example class, using the class path you have just set. You also set a factory attribute to specify the parser language to use.
It is also possible to mix the declarations. There is no special declaration for the default unnamed schema.
Associating a Document with a Schema
Configuring the DocumentBuilder Factory It is helpful to start by defining the constants you will use when configuring the factory. The document must be associated with at least one schema, and possibly more.
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