Validating xml against dtd in java
The default response from a schema is to throw a to receive more detailed information about the document's problems.
For example, suppose you want to log all validation errors, but you don't want to stop processing when you encounter one.
The Java language doesn't tell you what it means or convert the data to a Java type such as can call at any time to find out the type of the current element or one of its attributes.
It can also tell you whether an attribute is an ID, and whether the attribute was explicitly specified in the document or defaulted in from the schema. book: #Anon Type_book title: #Anon Type_title subtitle: #Anon Type_subtitle info: #Anon Type_info copyright: #Anon Type_copyright year: #Anon Type_year holder: #Anon Type_holder author: #Anon Type_author personname: #Anon Type_personname firstname: #Anon Type_firstname othername: #Anon Type_othername surname: #Anon Type_surname personblurb: #Anon Type_personblurb para: #Anon Type_para link: #Anon Type_link As you can see, the Doc Book schema assigns most elements anonymous complex types.
SAX sources can be augmented into SAX results, and DOM sources into DOM results; but SAX sources can't be augmented to DOM results or vice versa.
If you need to do that, first augment into the matching result -- SAX for SAX and DOM for DOM -- and then use Tr AX's identity transform to change the model. Putting all the information the document requires in the instance is far more reliable than splitting it between the instance and the schema. The W3C XML Schema Language is heavily based on the notion of .
When you pass a URI identifying a particular schema language to that know how to process your schema language.
Sometimes validation is performed while parsing, sometimes immediately after. It enables you to quickly check that input is roughly in the form you expect and quickly reject any document that is too far away from what your process can handle.If there's a problem with the data, it's better to find out earlier than later.This is useful for adding constraints that are more easily checked in a Turing-complete language like Java than in a declarative language like the W3C XML Schema language.You can define a mini-schema language, write a quick implementation, and plug it into the validation layer.
The You can reuse the same validator and the same schema multiple times in series. Usually the document consumer should choose the schema, not the document producer. All other schema languages require an explicitly specified schema location. The abstract factory design pattern enables this one API to support many different schema languages and object models.