| /******************************************************************************* |
| * Copyright (c) 2011 GitHub Inc. |
| * 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: |
| * Kevin Sawicki (GitHub Inc.) - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.mylyn.internal.github.core; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import org.eclipse.mylyn.tasks.core.IRepositoryQuery; |
| |
| /** |
| * Utilities for working with {@link IRepositoryQuery} objects. |
| * |
| * @author Kevin Sawicki (kevin@github.com) |
| */ |
| public abstract class QueryUtils { |
| |
| /** |
| * DELIMITER |
| */ |
| public static final String DELIMITER = "::"; //$NON-NLS-1$ |
| |
| /** |
| * Set attribute |
| * |
| * @param key |
| * @param values |
| * @param query |
| */ |
| public static void setAttribute(String key, Collection<String> values, |
| IRepositoryQuery query) { |
| if (key == null || query == null) |
| return; |
| |
| if (values != null && !values.isEmpty()) { |
| StringBuilder value = new StringBuilder(); |
| for (String entry : values) |
| value.append(entry).append(DELIMITER); |
| query.setAttribute(key, value.toString()); |
| } else |
| query.setAttribute(key, null); |
| |
| } |
| |
| /** |
| * Get attribute |
| * |
| * @param key |
| * @param query |
| * @return non-null but possibly empty list |
| */ |
| public static List<String> getAttributes(String key, IRepositoryQuery query) { |
| if (key == null || query == null) |
| return Collections.emptyList(); |
| |
| String attribute = query.getAttribute(key); |
| if (attribute == null || attribute.length() == 0) |
| return Collections.emptyList(); |
| |
| List<String> attrs = new LinkedList<String>(); |
| String[] values = attribute.split(DELIMITER); |
| for (String value : values) |
| if (value.length() > 0) |
| attrs.add(value); |
| |
| return attrs; |
| } |
| |
| } |