2 * Copyright (c) 2019 PANTHEON.tech, s.r.o. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.yangtools.yang.parser.rfc7950.stmt.meta;
10 import static java.util.Objects.requireNonNull;
12 import javax.xml.xpath.XPathExpressionException;
13 import org.eclipse.jdt.annotation.NonNullByDefault;
14 import org.opendaylight.yangtools.yang.parser.rfc7950.namespace.YangNamespaceContextNamespace;
15 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
16 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
17 import org.opendaylight.yangtools.yang.xpath.api.YangXPathExpression.QualifiedBound;
18 import org.opendaylight.yangtools.yang.xpath.api.YangXPathParser;
19 import org.opendaylight.yangtools.yang.xpath.api.YangXPathParserFactory;
20 import org.slf4j.Logger;
21 import org.slf4j.LoggerFactory;
24 public final class XPathSupport {
25 private static final Logger LOG = LoggerFactory.getLogger(XPathSupport.class);
27 private final YangXPathParserFactory factory;
29 public XPathSupport(final YangXPathParserFactory factory) {
30 this.factory = requireNonNull(factory);
33 QualifiedBound parseXPath(final StmtContext<?, ?, ?> ctx, final String xpath) {
34 final YangXPathParser.QualifiedBound parser = factory.newParser(
35 YangNamespaceContextNamespace.computeIfAbsent(ctx));
36 final QualifiedBound parsed;
38 parsed = parser.parseExpression(xpath);
39 } catch (XPathExpressionException e) {
40 throw new SourceException(ctx, e, "Argument \"%s\" is not valid XPath string", xpath);
43 if (ctx.yangVersion().compareTo(parsed.getYangVersion()) < 0) {
44 LOG.warn("{} features required in {} context to parse expression '{}' [at {}]",
45 parsed.getYangVersion().reference(), ctx.yangVersion().reference(), xpath, ctx.sourceReference());