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package org.custommonkey.xmlunit.jaxp13;
import java.util.ArrayList;
import java.util.List;
import javax.xml.transform.Source;
import javax.xml.validation.SchemaFactory;
import org.xmlunit.XMLUnitException;
import org.xmlunit.validation.JAXPValidator;
import org.xmlunit.validation.Languages;
import org.xmlunit.validation.ValidationProblem;
import org.custommonkey.xmlunit.exceptions.XMLUnitRuntimeException;
import org.xml.sax.SAXParseException;
/**
* Validator class based of {@link javax.xml.validation javax.xml.validation}.
*
* <p>This class provides support for validating schema definitions as
* well as instance documents. It defaults to the W3C XML Schema 1.0
* but can be used to validate against any schema language supported
* by your SchemaFactory implementation.</p>
*
* <p>An implementation detail of {@code
* javax.xml.validation.Validator} leaks into this class: any {@code
* xsi:schemaLocation} or {@code xsi:noSchemaLocation} attribute of
* the instance document will be ignored if any schema source has been
* set. This means you must either specify all sources or none of
* them to successfully validate instances.</p>
*/
public class Validator {
private final ArrayList<Source> sources = new ArrayList<Source>();
private final JAXPValidator validator;
/**
* validates using W3C XML Schema 1.0.
*/
public Validator() {
this(Languages.W3C_XML_SCHEMA_NS_URI, null);
}
/**
* validates using the specified schema language.
*
* @param schemaLanguage the schema language to use - see {@link
* javax.xml.validation.SchemaFactory SchemaFactory}.
*/
public Validator(String schemaLanguage) {
this(schemaLanguage, null);
}
/**
* validates using the specified schema factory.
*/
public Validator(SchemaFactory factory) {
this(null, factory);
}
/**
* validates using the specified schema language or factory.
*
* @param schemaLanguage the schema language to use - see {@link
* javax.xml.validation.SchemaFactory SchemaFactory}.
* @param factory the concrete factory to use. If this is
* non-null, the first argument will be ignored.
*/
protected Validator(String schemaLanguage, SchemaFactory factory) {
validator = new JAXPValidator(schemaLanguage, factory);
}
/**
* Adds a source for the schema defintion.
*/
public void addSchemaSource(Source s) {
sources.add(s);
validator.setSchemaSources(sources.toArray(new Source[0]));
}
/**
* Is the given schema definition valid?
*/
public boolean isSchemaValid() {
return validator.validateSchema().isValid();
}
/**
* Obtain a list of all errors in the schema defintion.
*
* <p>The list contains {@link org.xml.sax.SAXParseException
* SAXParseException}s.</p>
*/
public List<SAXParseException> getSchemaErrors() {
return problemToExceptionList(validator.validateSchema().getProblems());
}
/**
* Is the given schema instance valid according to the configured
* schema definition(s)?
*
* @throws XMLUnitRuntimeException if the schema definition is
* invalid or the Source is a SAXSource and the underlying
* XMLReader throws an IOException (see {@link
* javax.xml.validation.Validator#validate validate in
* Validator}).
*/
public boolean isInstanceValid(Source instance) {
try {
return validator.validateInstance(instance).isValid();
} catch (XMLUnitException e) {
throw new XMLUnitRuntimeException(e.getMessage(), e.getCause());
}
}
/**
* Obtain a list of all errors in the given instance.
*
* <p>The list contains {@link org.xml.sax.SAXParseException
* SAXParseException}s.</p>
*
* @throws XMLUnitRuntimeException if the schema definition is
* invalid or the Source is a SAXSource and the underlying
* XMLReader throws an IOException (see {@link
* javax.xml.validation.Validator#validate validate in
* Validator}).
*/
public List<SAXParseException> getInstanceErrors(Source instance) {
try {
return problemToExceptionList(validator.validateInstance(instance).
getProblems());
} catch (XMLUnitException e) {
throw new XMLUnitRuntimeException(e.getMessage(), e.getCause());
}
}
private static List<SAXParseException>
problemToExceptionList(Iterable<ValidationProblem> problems) {
final List<SAXParseException> l = new ArrayList<SAXParseException>();
for (ValidationProblem p : problems) {
l.add(new SAXParseException(p.getMessage(),
null, null,
p.getLine(), p.getColumn()));
}
return l;
}
}