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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}.
 *
 * 

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.

* *

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.

*/ public class Validator { private final ArrayList sources = new ArrayList(); 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. * *

The list contains {@link org.xml.sax.SAXParseException * SAXParseException}s.

*/ public List 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. * *

The list contains {@link org.xml.sax.SAXParseException * SAXParseException}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 List getInstanceErrors(Source instance) { try { return problemToExceptionList(validator.validateInstance(instance). getProblems()); } catch (XMLUnitException e) { throw new XMLUnitRuntimeException(e.getMessage(), e.getCause()); } } private static List problemToExceptionList(Iterable problems) { final List l = new ArrayList(); for (ValidationProblem p : problems) { l.add(new SAXParseException(p.getMessage(), null, null, p.getLine(), p.getColumn())); } return l; } }




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