| /******************************************************************************* |
| * Copyright (c) 2011, 2013 IBM Corporation and others |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.equinox.metatype.impl; |
| |
| import java.io.IOException; |
| import java.util.*; |
| import java.util.Map.Entry; |
| import org.eclipse.equinox.metatype.Extendable; |
| import org.eclipse.equinox.metatype.impl.Persistence.Reader; |
| import org.eclipse.equinox.metatype.impl.Persistence.Writer; |
| |
| public class ExtendableHelper implements Extendable { |
| private final Map<String, Map<String, String>> extensions; |
| |
| public ExtendableHelper() { |
| this(Collections.<String, Map<String, String>> emptyMap()); |
| } |
| |
| public ExtendableHelper(Map<String, Map<String, String>> extensions) { |
| if (extensions == null) |
| throw new NullPointerException(); |
| this.extensions = extensions; |
| } |
| |
| @Override |
| public Map<String, String> getExtensionAttributes(String schema) { |
| return Collections.unmodifiableMap(extensions.get(schema)); |
| } |
| |
| @Override |
| public Set<String> getExtensionUris() { |
| return Collections.unmodifiableSet(extensions.keySet()); |
| } |
| |
| void getStrings(Set<String> strings) { |
| for (Entry<String, Map<String, String>> e1 : extensions.entrySet()) { |
| strings.add(e1.getKey()); |
| for (Entry<String, String> e2 : e1.getValue().entrySet()) { |
| strings.add(e2.getKey()); |
| strings.add(e2.getValue()); |
| } |
| } |
| } |
| |
| public static ExtendableHelper load(Reader reader) throws IOException { |
| Map<String, Map<String, String>> extensions = new HashMap<>(); |
| int numExtensions = reader.readInt(); |
| for (int i = 0; i < numExtensions; i++) { |
| String extKey = reader.readString(); |
| int numAttrs = reader.readInt(); |
| Map<String, String> extensionAttrs = new HashMap<>(); |
| for (int j = 0; j < numAttrs; j++) { |
| String attrKey = reader.readString(); |
| String attrValue = reader.readString(); |
| extensionAttrs.put(attrKey, attrValue); |
| } |
| extensions.put(extKey, extensionAttrs); |
| } |
| return new ExtendableHelper(extensions); |
| } |
| |
| public void write(Writer writer) throws IOException { |
| writer.writeInt(extensions.size()); |
| for (Entry<String, Map<String, String>> extensionEntry : extensions.entrySet()) { |
| writer.writeString(extensionEntry.getKey()); |
| Map<String, String> extensionAttrs = extensionEntry.getValue(); |
| writer.writeInt(extensionAttrs.size()); |
| for (Entry<String, String> attrs : extensionAttrs.entrySet()) { |
| writer.writeString(attrs.getKey()); |
| writer.writeString(attrs.getValue()); |
| } |
| } |
| } |
| |
| } |