| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.jackrabbit.oak.plugins.name; |
| |
| import static com.google.common.collect.Iterables.toArray; |
| import static java.util.Collections.emptyList; |
| import static org.apache.jackrabbit.oak.api.Type.STRING; |
| import static org.apache.jackrabbit.oak.api.Type.STRINGS; |
| |
| import javax.jcr.NamespaceException; |
| import javax.jcr.NamespaceRegistry; |
| import javax.jcr.RepositoryException; |
| import javax.jcr.UnsupportedRepositoryOperationException; |
| |
| import org.apache.jackrabbit.oak.api.PropertyState; |
| import org.apache.jackrabbit.oak.api.Root; |
| import org.apache.jackrabbit.oak.api.Tree; |
| import org.apache.jackrabbit.oak.spi.namespace.NamespaceConstants; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * Read-only namespace registry. Used mostly internally when access to the |
| * in-content registered namespaces is needed. See the |
| * {@link ReadWriteNamespaceRegistry} subclass for a more complete registry |
| * implementation that supports also namespace modifications and that's thus |
| * better suited for use in in implementing the full JCR API. |
| */ |
| public class ReadOnlyNamespaceRegistry |
| implements NamespaceRegistry, NamespaceConstants { |
| |
| protected final Tree namespaces; |
| protected final Tree nsdata; |
| |
| public ReadOnlyNamespaceRegistry(Root root) { |
| this.namespaces = root.getTree(NAMESPACES_PATH); |
| this.nsdata = namespaces.getChild(REP_NSDATA); |
| } |
| |
| private Iterable<String> getNSData(String name) { |
| PropertyState property = nsdata.getProperty(name); |
| if (property != null && property.getType() == STRINGS) { |
| return property.getValue(STRINGS); |
| } else { |
| return emptyList(); |
| } |
| } |
| |
| //--------------------------------------------------< NamespaceRegistry >--- |
| |
| @Override |
| public void registerNamespace(String prefix, String uri) |
| throws RepositoryException { |
| throw new UnsupportedRepositoryOperationException(); |
| } |
| |
| @Override |
| public void unregisterNamespace(String prefix) throws RepositoryException { |
| throw new UnsupportedRepositoryOperationException(); |
| } |
| |
| @Override @NotNull |
| public String[] getPrefixes() { |
| return toArray(getNSData(REP_PREFIXES), String.class); |
| } |
| |
| @Override @NotNull |
| public String[] getURIs() { |
| return toArray(getNSData(REP_URIS), String.class); |
| } |
| |
| @Override @NotNull |
| public String getURI(String prefix) throws NamespaceException { |
| if (prefix.isEmpty()) { |
| return prefix; // the default empty namespace |
| } |
| |
| PropertyState property = namespaces.getProperty(prefix); |
| if (property != null && property.getType() == STRING) { |
| return property.getValue(STRING); |
| } |
| |
| throw new NamespaceException( |
| "No namespace registered for prefix " + prefix); |
| } |
| |
| @Override @NotNull |
| public String getPrefix(String uri) throws NamespaceException { |
| if (uri.isEmpty()) { |
| return uri; // the default empty namespace |
| } |
| |
| PropertyState property = nsdata.getProperty(Namespaces.encodeUri(uri)); |
| if (property != null && property.getType() == STRING) { |
| return property.getValue(STRING); |
| } |
| |
| throw new NamespaceException( |
| "No namespace prefix registered for URI " + uri); |
| } |
| |
| } |