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/*
* (c) Copyright 2009 Hewlett-Packard Development Company, LP
* All rights reserved.
* [See end of file]
*/
package com.hp.hpl.jena.riot;
import java.util.Iterator;
import atlas.lib.Cache;
import atlas.lib.CacheFactory;
import com.hp.hpl.jena.graph.Node;
import com.hp.hpl.jena.graph.Triple;
import com.hp.hpl.jena.graph.impl.LiteralLabel;
import com.hp.hpl.jena.iri.IRI;
import com.hp.hpl.jena.iri.IRIComponents;
import com.hp.hpl.jena.iri.IRIFactory;
import com.hp.hpl.jena.iri.Violation;
import com.hp.hpl.jena.iri.ViolationCodes;
import com.hp.hpl.jena.shared.JenaException;
public class Checker
{
//static IRIFactory iriFactory = IRIFactory.jenaImplementation() ;
//static IRIFactory iriFactory = IRIFactory.iriImplementation();
/** The IRI checker setup - more than usual Jena but not full IRI. */
static IRIFactory iriFactory = new IRIFactory();
static {
// IRIFactory.iriImplementation() ...
iriFactory.useSpecificationIRI(true);
iriFactory.useSchemeSpecificRules("*",true);
//iriFactory.shouldViolation(false,true);
// Moderate it -- allow unwise chars and any scheme name.
iriFactory.setIsError(ViolationCodes.UNWISE_CHARACTER,false);
iriFactory.setIsWarning(ViolationCodes.UNWISE_CHARACTER,false);
iriFactory.setIsError(ViolationCodes.UNREGISTERED_IANA_SCHEME,false);
iriFactory.setIsWarning(ViolationCodes.UNREGISTERED_IANA_SCHEME,false);
iriFactory.create("");
}
private boolean allowRelativeIRIs = false ;
private boolean warningsAreErrors = true ;
private ErrorHandler handler ;
public Checker(ErrorHandler handler)
{
this.handler = handler ;
if ( this.handler == null )
this.handler = new ErrorHandlerStd() ;
}
public ErrorHandler getHandler() { return handler ; }
public void check(Node node)
{
if ( node.isURI() ) checkURI(node) ;
else if ( node.isBlank() ) checkBlank(node) ;
else if ( node.isLiteral() ) checkLiteral(node) ;
else if ( node.isVariable() ) checkVar(node) ;
}
/** Check a triple - assumes individual nodes are legal */
public void check(Triple triple)
{
validate(null, triple) ;
}
public static void validate(String msg, Triple triple)
{
validate(msg, triple.getSubject() , triple.getPredicate() , triple.getObject() ) ;
}
public static void validate(String msg, Node subject, Node predicate, Node object)
{
if ( msg == null )
msg = "Validation" ;
if ( subject == null || ( ! subject.isURI() && ! subject.isBlank() ) )
throw new RiotException(msg+": Subject is not a URI or blank node") ;
if ( predicate == null || ( ! predicate.isURI() ) )
throw new RiotException(msg+": Predicate not a URI") ;
if ( object == null || ( ! object.isURI() && ! object.isBlank() && ! object.isLiteral() ) )
throw new RiotException(msg+": Object is not a URI, blank node or literal") ;
}
final private void checkVar(Node node)
{}
final private void checkLiteral(Node node)
{
LiteralLabel lit = node.getLiteral() ;
// Datatype check (and plain literals are always well formed)
if ( lit.getDatatype() != null && ! lit.isWellFormed() )
throw new JenaException("Lexical not valid for datatype: "+node) ;
// // Not well formed.
// if ( lit.getDatatype() != null )
// {
// if ( ! lit.getDatatype().isValid(lit.getLexicalForm()) )
// throw new JenaException("Lexical not valid for datatype: "+node) ;
// }
if (lit.language() != null )
{
// Not a pefect test.
String lang = lit.language() ;
if ( lang.length() > 0 && ! lang.matches("[a-z]{1,8}(-[a-z]{1,8})*") )
throw new JenaException("Language not valid: "+node) ;
}
}
final private void checkBlank(Node node)
{
String x = node.getBlankNodeLabel() ;
if ( x.indexOf(' ') >= 0 )
throw new JenaException("Illegal blank node label (contains a space): "+node) ;
}
public void checkIRI(IRI iri)
{
violations(iri, handler, allowRelativeIRIs, warningsAreErrors) ;
}
private Cache cache = CacheFactory.createSimpleCache(1000) ;
final private void checkURI(Node node)
{
if ( cache != null && cache.containsKey(node) )
return ;
IRI iri = iriFactory.create(node.getURI()); // always works - no exceptions.
checkIRI(iri) ;
// If OK, put in cache.
if ( cache != null && ! iri.hasViolation(true) )
cache.put(node, iri) ;
}
/** Process violations on an IRI
* Calls the errorhandler on all errors and warnings (as warning) then
* calls the errorHandler for an error.
*/
public static void violations(IRI iri, ErrorHandler handler, boolean allowRelativeIRIs, boolean warningsAreErrors)
{
if ( iri.hasViolation(true) )
{
Iterator iter = iri.violations(true) ;
boolean errorSeen = false ;
boolean warningSeen = false ;
// What to finally report.
Violation vError = null ;
Violation vWarning = null ;
Violation vSub = null ;
for ( ; iter.hasNext() ; )
{
Violation v = iter.next();
int code = v.getViolationCode() ;
// Treat these with low priority.
if ( code == Violation.LOWERCASE_PREFERRED ||
code == Violation.PERCENT_ENCODING_SHOULD_BE_UPPERCASE )
{
if ( vSub == null )
vSub = v ;
continue ;
}
// Remember first.
if ( v.isError() )
{
errorSeen = true ;
if ( vError == null )
// Remember first error
vError = v ;
}
else
{
warningSeen = true ;
if ( vWarning == null )
vWarning = v ;
}
String msg = v.getShortMessage();
String iriStr = iri.toString();
// Put out warnings for all IRI issues - later, exception for errors.
if (v.getViolationCode() == ViolationCodes.REQUIRED_COMPONENT_MISSING &&
v.getComponent() == IRIComponents.SCHEME)
{
if (! allowRelativeIRIs )
handler.warning("Relative URIs are not permitted in RDF: specifically <"+iriStr+">");
}
else
handler.warning("Bad IRI: "+msg);
}
// and report our choosen error.
if ( errorSeen || (warningsAreErrors && warningSeen) )
{
String msg = null ;
if ( vError != null ) msg = vError.getShortMessage() ;
if ( msg == null && vWarning != null ) msg = vWarning.getShortMessage() ;
if ( msg == null )
handler.error("Bad IRI: "+iri) ;
else
handler.error("Bad IRI: "+iri+" : "+msg) ;
}
}
}
}
/*
* (c) Copyright 2009 Hewlett-Packard Development Company, LP
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/ © 2015 - 2025 Weber Informatics LLC | Privacy Policy