| /******************************************************************************* |
| * Copyright (c) 2008, 2010 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.equinox.internal.p2.persistence; |
| |
| import org.eclipse.equinox.p2.metadata.Version; |
| |
| import java.io.OutputStream; |
| import java.io.UnsupportedEncodingException; |
| import java.net.URI; |
| import org.eclipse.core.runtime.URIUtil; |
| |
| /* |
| * Class used to persist a composite repository. |
| */ |
| public class CompositeWriter extends XMLWriter implements XMLConstants { |
| |
| private static final String REPOSITORY_ELEMENT = "repository"; //$NON-NLS-1$ |
| private static final Version CURRENT_VERSION = Version.createOSGi(1, 0, 0); |
| |
| public CompositeWriter(OutputStream output, String type) throws UnsupportedEncodingException { |
| super(output, new XMLWriter.ProcessingInstruction[] {XMLWriter.ProcessingInstruction.makeTargetVersionInstruction(type, CURRENT_VERSION)}); |
| // TODO: add a processing instruction for the metadata version |
| } |
| |
| /** |
| * Writes a list of URIs referring to sub repositories |
| */ |
| protected void writeChildren(URI[] children) { |
| if (children == null || children.length == 0) |
| return; |
| start(CHILDREN_ELEMENT); |
| attribute(COLLECTION_SIZE_ATTRIBUTE, children.length); |
| for (int i = 0; i < children.length; i++) |
| writeChild(children[i]); |
| end(CHILDREN_ELEMENT); |
| } |
| |
| protected void writeChild(URI encodedURI) { |
| String unencodedString = URIUtil.toUnencodedString(encodedURI); |
| start(CHILD_ELEMENT); |
| attribute(LOCATION_ELEMENT, unencodedString); |
| end(CHILD_ELEMENT); |
| } |
| |
| /** |
| * Write the given composite repository to the output stream. |
| */ |
| public void write(CompositeRepositoryState repository) { |
| start(REPOSITORY_ELEMENT); |
| attribute(NAME_ATTRIBUTE, repository.getName()); |
| attribute(TYPE_ATTRIBUTE, repository.getType()); |
| attribute(VERSION_ATTRIBUTE, repository.getVersion()); |
| attributeOptional(PROVIDER_ATTRIBUTE, repository.getProvider()); |
| attributeOptional(DESCRIPTION_ATTRIBUTE, repository.getDescription()); // TODO: could be cdata? |
| writeProperties(repository.getProperties()); |
| writeChildren(repository.getChildren()); |
| end(REPOSITORY_ELEMENT); |
| flush(); |
| } |
| |
| } |