org.opengis.cite.iso19136.util

Class ValidationUtils

java.lang.Object

org.opengis.cite.iso19136.util.ValidationUtils

public class ValidationUtils
extends Object

A utility class that provides convenience methods to support schema validation.

Constructor Summary

Constructors

Constructor and Description
ValidationUtils()

Method Summary

Modifier and Type	Method and Description
static org.opengis.cite.validation.SchematronValidator	buildSchematronValidator(String schemaRef, String phase) Constructs a SchematronValidator that will check an XML resource against the rules defined in a Schematron schema.
static Set<URI>	extractSchemaReferences(Source source, String baseURI) Extracts a set of XML Schema references from a source XML document.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ValidationUtils

public ValidationUtils()

Method Detail

buildSchematronValidator

public static org.opengis.cite.validation.SchematronValidator buildSchematronValidator(String schemaRef,
                                                                                       String phase)

Constructs a SchematronValidator that will check an XML resource against the rules defined in a Schematron schema. An attempt is made to resolve the schema reference using an entity catalog; if this fails the reference is used as given.

Parameters:

schemaRef - A reference to a Schematron schema; this is expected to be a relative or absolute URI value, possibly matching the system identifier for some entry in an entity catalog.

phase - The name of the phase to invoke; if null then all patterns are active.

Returns:

A SchematronValidator instance, or null if the validator cannot be constructed (e.g. invalid schema reference or phase name).

extractSchemaReferences

public static Set<URI> extractSchemaReferences(Source source,
                                               String baseURI)
                                        throws XMLStreamException

Extracts a set of XML Schema references from a source XML document. The document element is expected to include the standard xsi:schemaLocation attribute.

Parameters:

source - The source instance to read from; its base URI (systemId) should be set.

baseURI - An alternative base URI to use if the source does not have a system identifier set or if its system id is a file URI. This will usually be the URI used to retrieve the resource; it may be null.

Returns:

A Set containing absolute URI references that specify the locations of XML Schema resources.

Throws:

XMLStreamException - If an error occurs while reading the source instance.