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;
10 import static java.util.Objects.requireNonNull;
12 import com.google.common.annotations.Beta;
13 import javax.xml.xpath.XPathExpressionException;
14 import org.eclipse.jdt.annotation.NonNullByDefault;
15 import org.opendaylight.yangtools.yang.parser.rfc7950.namespace.YangNamespaceContextNamespace;
16 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
17 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
18 import org.opendaylight.yangtools.yang.xpath.api.YangXPathExpression.QualifiedBound;
19 import org.opendaylight.yangtools.yang.xpath.api.YangXPathParser;
20 import org.opendaylight.yangtools.yang.xpath.api.YangXPathParserFactory;
21 import org.slf4j.Logger;
22 import org.slf4j.LoggerFactory;
26 public final class XPathSupport {
27 private static final Logger LOG = LoggerFactory.getLogger(XPathSupport.class);
29 private final YangXPathParserFactory factory;
31 public XPathSupport(final YangXPathParserFactory factory) {
32 this.factory = requireNonNull(factory);
35 public QualifiedBound parseXPath(final StmtContext<?, ?, ?> ctx, final String xpath) {
36 final YangXPathParser.QualifiedBound parser = factory.newParser(
37 YangNamespaceContextNamespace.computeIfAbsent(ctx));
38 final QualifiedBound parsed;
40 parsed = parser.parseExpression(xpath);
41 } catch (XPathExpressionException e) {
42 throw new SourceException(ctx.getStatementSourceReference(), e,
43 "Argument \"%s\" is not valid XPath string", xpath);
46 if (ctx.getRootVersion().compareTo(parsed.getYangVersion()) < 0) {
47 LOG.warn("{} features required in {} context to parse expression '{}' [at {}]",
48 parsed.getYangVersion().getReference(), ctx.getRootVersion().getReference(), xpath,
49 ctx.getStatementSourceReference());