2 * Copyright (c) 2015 Cisco Systems, Inc. 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 com.google.common.collect.Collections2;
14 import com.google.common.collect.ImmutableList;
15 import java.util.ArrayList;
16 import java.util.Collection;
17 import java.util.List;
19 import java.util.Optional;
20 import java.util.function.Predicate;
21 import javax.annotation.Nonnull;
22 import javax.annotation.Nullable;
23 import org.eclipse.jdt.annotation.NonNull;
24 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
25 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
26 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
27 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
28 import org.opendaylight.yangtools.yang.model.api.meta.IdentifierNamespace;
29 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
30 import org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase;
32 public abstract class EffectiveStatementBase<A, D extends DeclaredStatement<A>> implements EffectiveStatement<A, D> {
33 private final List<? extends EffectiveStatement<?, ?>> substatements;
39 * context of statement.
41 protected EffectiveStatementBase(final StmtContext<A, D, ?> ctx) {
42 final Collection<? extends StmtContext<?, ?, ?>> effectiveSubstatements = ctx.effectiveSubstatements();
43 final Collection<StmtContext<?, ?, ?>> substatementsInit = new ArrayList<>();
45 final Collection<? extends StmtContext<?, ?, ?>> supportedDeclaredSubStmts = Collections2.filter(
46 ctx.declaredSubstatements(), StmtContext::isSupportedByFeatures);
47 for (final StmtContext<?, ?, ?> declaredSubstatement : supportedDeclaredSubStmts) {
48 if (YangStmtMapping.USES == declaredSubstatement.getPublicDefinition()) {
49 substatementsInit.add(declaredSubstatement);
50 substatementsInit.addAll(declaredSubstatement.getEffectOfStatement());
51 ((StatementContextBase<?, ?, ?>) ctx).removeStatementsFromEffectiveSubstatements(declaredSubstatement
52 .getEffectOfStatement());
54 substatementsInit.add(declaredSubstatement);
57 substatementsInit.addAll(effectiveSubstatements);
59 this.substatements = ImmutableList.copyOf(initSubstatements(substatementsInit));
63 * Create a set of substatements. This method is split out so it can be overridden in
64 * ExtensionEffectiveStatementImpl to leak a not-fully-initialized instance.
66 * @param substatementsInit proposed substatements
67 * @return Filtered substatements
69 protected Collection<? extends EffectiveStatement<?, ?>> initSubstatements(
70 final Collection<? extends StmtContext<?, ?, ?>> substatementsInit) {
71 return Collections2.transform(Collections2.filter(substatementsInit,
72 StmtContext::isSupportedToBuildEffective), StmtContext::buildEffective);
76 public final <K, V, N extends IdentifierNamespace<K, V>> V get(@Nonnull final Class<N> namespace,
77 @Nonnull final K identifier) {
78 return findAll(namespace).get(requireNonNull(identifier));
82 public final <K, V, N extends IdentifierNamespace<K, V>> Map<K, V> getAll(@Nonnull final Class<N> namespace) {
83 return getNamespaceContents(requireNonNull(namespace)).orElse(null);
87 * Return the statement-specific contents of specified namespace, if available.
89 * @param namespace Requested namespace
90 * @return Namespace contents, if available.
93 protected <K, V, N extends IdentifierNamespace<K, V>> Optional<? extends Map<K, V>> getNamespaceContents(
94 final @NonNull Class<N> namespace) {
95 return Optional.empty();
100 public final Collection<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
101 return substatements;
105 * Find first substatement of specified type.
107 * @param type Requested type
108 * @return First matching substatement, or null if no match is found.
110 * @deprecated Use {@link #findFirstEffectiveSubstatement(Class)} instead.
113 public final <S extends EffectiveStatement<?, ?>> S firstEffective(final Class<S> type) {
114 return findFirstEffectiveSubstatement(type).orElse(null);
117 protected final <S extends SchemaNode> S firstSchemaNode(final Class<S> type) {
118 return substatements.stream().filter(type::isInstance).findFirst().map(type::cast).orElse(null);
121 @SuppressWarnings("unchecked")
122 public final <T> Collection<T> allSubstatementsOfType(final Class<T> type) {
123 return Collection.class.cast(Collections2.filter(substatements, type::isInstance));
126 @Nullable protected final <T> T firstSubstatementOfType(final Class<T> type) {
127 return substatements.stream().filter(type::isInstance).findFirst().map(type::cast).orElse(null);
130 protected final <R> R firstSubstatementOfType(final Class<?> type, final Class<R> returnType) {
131 return substatements.stream()
132 .filter(((Predicate<Object>)type::isInstance).and(returnType::isInstance))
133 .findFirst().map(returnType::cast).orElse(null);
136 protected final EffectiveStatement<?, ?> firstEffectiveSubstatementOfType(final Class<?> type) {
137 return substatements.stream().filter(type::isInstance).findFirst().orElse(null);