Java sax parser validating

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 Note - The default namespace is actually a specific namespace.

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So a namespace that does have a name can never be used as the default namespace.

When parsed, each element in the data set will be validated against the appropriate schema, as long as those schemas have been declared.

If the schema definition does not define a target namespace, then it applies to the default (unnamed, or null) namespace.

So, in our example, you would expect to see these target namespace declarations in the schemas: An array of Objects can be used only when the schema language has the ability to assemble a schema at runtime.

(You will see how to deal with multiple namespaces in the next section.) You can also specify the schema file in the application, which is the case for Here, too, there are mechanisms at your disposal that will let you specify multiple schemas. Namespaces let you combine elements that serve different purposes in the same document without having to worry about overlapping names.

Note - The material discussed in this section also applies to validating when using the SAX parser.This "unnamed namespace" (or "null namespace") is like the number zero.It does not have any value to speak of (no name), but it is still precisely defined.To be notified of validation errors in an XML document, the following must be true: It is helpful to start by defining the constants you will use when configuring the factory.These are the same constants you define when using XML Schema for SAX parsing, and they are declared at the beginning of the Because JAXP-compliant parsers are not namespace-aware by default, it is necessary to set the property for schema validation to work.You also set a factory attribute to specify the parser language to use.

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