2 * Copyright (c) 2014 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.repo;
10 import com.google.common.annotations.Beta;
11 import com.google.common.base.Preconditions;
12 import com.google.common.cache.CacheBuilder;
13 import com.google.common.cache.CacheLoader;
14 import com.google.common.cache.LoadingCache;
16 import javax.annotation.Nonnull;
17 import org.opendaylight.yangtools.concepts.Identifiable;
18 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
19 import org.opendaylight.yangtools.yang.model.repo.api.SchemaContextFactory;
20 import org.opendaylight.yangtools.yang.model.repo.api.SchemaRepository;
21 import org.opendaylight.yangtools.yang.model.repo.api.SchemaSourceFilter;
22 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
23 import org.opendaylight.yangtools.yang.model.repo.util.AbstractSchemaRepository;
26 * A {@link SchemaRepository} which allows sharing of {@link SchemaContext} as
27 * long as their specification is the same.
29 * Note: for current implementation, "same" means the same filter and the same
30 * set of {@link SourceIdentifier}s.
33 public final class SharedSchemaRepository extends AbstractSchemaRepository implements Identifiable<String> {
34 private final LoadingCache<SchemaSourceFilter, SchemaContextFactory> cache =
35 CacheBuilder.newBuilder().softValues().build(new CacheLoader<SchemaSourceFilter, SchemaContextFactory>() {
37 public SchemaContextFactory load(@Nonnull final SchemaSourceFilter key) {
38 return new SharedSchemaContextFactory(SharedSchemaRepository.this, key);
41 private final String id;
43 public SharedSchemaRepository(final String id) {
44 this.id = Preconditions.checkNotNull(id);
48 public String getIdentifier() {
53 public SchemaContextFactory createSchemaContextFactory(@Nonnull final SchemaSourceFilter filter) {
54 return cache.getUnchecked(filter);
58 public String toString() {
59 return "SchemaRepository: " + id;