2 * Copyright (c) 2019 Pantheon Technologies, s.r.o. 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.model.util;
10 import com.google.common.annotations.Beta;
11 import com.google.common.collect.ImmutableBiMap;
12 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
13 import java.util.Optional;
14 import org.opendaylight.yangtools.yang.common.BiMapYangNamespaceContext;
15 import org.opendaylight.yangtools.yang.common.QNameModule;
16 import org.opendaylight.yangtools.yang.common.YangNamespaceContext;
17 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
18 import org.opendaylight.yangtools.yang.model.api.Module;
19 import org.opendaylight.yangtools.yang.model.spi.AbstractEffectiveModelContextProvider;
22 * Utility {@link YangNamespaceContext} backed by a SchemaContext, resolving namespaces to their module names. This
23 * is useful for implementing namespace resolution according to
24 * <a href="https://tools.ietf.org/html/rfc7951#section-4">RFC7951 Section 4</a>.
27 * When multiple revisions of a particular namespace are present in the backing SchemaContext, this ambiguity is
28 * resolved by using the latest revision available.
30 * @author Robert Varga
33 public final class ModuleNameNamespaceContext extends AbstractEffectiveModelContextProvider
34 implements YangNamespaceContext {
35 private static final long serialVersionUID = 1L;
37 @SuppressFBWarnings(value = "SE_NO_SUITABLE_CONSTRUCTOR", justification = "Handled through writeReplace()")
38 public ModuleNameNamespaceContext(final EffectiveModelContext schemaContext) {
43 * Convert this object to an equivalent {@link BiMapYangNamespaceContext}.
45 * @return A BiMapYangNamespaceContext.
47 public BiMapYangNamespaceContext toBiMap() {
48 final var builder = ImmutableBiMap.<String, QNameModule>builder();
49 for (var module : getEffectiveModelContext().getModuleStatements().values()) {
50 final var name = module.argument().getLocalName();
51 builder.put(name, findNamespaceForPrefix(name).orElseThrow());
53 return new BiMapYangNamespaceContext(builder.build());
57 public Optional<QNameModule> findNamespaceForPrefix(final String prefix) {
58 return getEffectiveModelContext().findModules(prefix).stream().findFirst().map(Module::getQNameModule);
62 public Optional<String> findPrefixForNamespace(final QNameModule namespace) {
63 return getEffectiveModelContext().findModule(namespace).map(Module::getName);
66 private Object writeReplace() {