| /******************************************************************************* |
| * Copyright (c) 2016 École Polytechnique de Montréal |
| * |
| * All rights reserved. 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 |
| *******************************************************************************/ |
| |
| package org.eclipse.tracecompass.internal.tmf.chart.ui.consumer; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.jdt.annotation.NonNull; |
| import org.eclipse.tracecompass.internal.provisional.tmf.chart.core.resolver.IStringResolver; |
| import org.eclipse.tracecompass.internal.tmf.chart.core.consumer.IDataConsumer; |
| |
| import com.google.common.collect.BiMap; |
| import com.google.common.collect.HashBiMap; |
| import com.google.common.collect.ImmutableBiMap; |
| import com.google.common.collect.ImmutableList; |
| |
| /** |
| * This class processes string values in order to create valid data for a |
| * scatter chart. It takes a {@link IStringResolver} for mapping values. |
| * <p> |
| * The current implementation of the scatter chart maps each unique string to an |
| * int. It is different than the bar chart because the other one cannot allow |
| * multiple Y values on an X value. With this consumer, all object sharing a |
| * same string value will also share the same value on the axis. |
| * |
| * @author Gabriel-Andrew Pollo-Guilbert |
| */ |
| public class ScatterStringConsumer implements IDataConsumer { |
| |
| // ------------------------------------------------------------------------ |
| // Members |
| // ------------------------------------------------------------------------ |
| |
| private final IStringResolver<Object> fResolver; |
| private final BiMap<String, Integer> fMap; |
| /** The list of value for each object consumed */ |
| private final List<String> fList = new ArrayList<>(); |
| |
| // ------------------------------------------------------------------------ |
| // Constructors |
| // ------------------------------------------------------------------------ |
| |
| /** |
| * Constructor. |
| * |
| * @param resolver |
| * The resolver that consumes values |
| */ |
| public ScatterStringConsumer(IStringResolver<Object> resolver) { |
| fResolver = resolver; |
| fMap = HashBiMap.create(); |
| } |
| |
| /** |
| * Surcharged constructor with a bimap provided. |
| * |
| * @param resolver |
| * The resolver that consumes values |
| * @param map |
| * The bimap to store values |
| */ |
| public ScatterStringConsumer(IStringResolver<Object> resolver, BiMap<String, Integer> map) { |
| fResolver = resolver; |
| fMap = map; |
| } |
| |
| // ------------------------------------------------------------------------ |
| // Overriden methods |
| // ------------------------------------------------------------------------ |
| |
| @Override |
| public boolean test(Object obj) { |
| return true; |
| } |
| |
| @Override |
| public void accept(@NonNull Object obj) { |
| String str = fResolver.getMapper().apply(obj); |
| |
| /* Convert null string to unknown */ |
| if (str == null) { |
| str = "?"; //$NON-NLS-1$ |
| } |
| |
| fList.add(str); |
| fMap.putIfAbsent(str, fMap.size()); |
| } |
| |
| // ------------------------------------------------------------------------ |
| // Accessors |
| // ------------------------------------------------------------------------ |
| |
| /** |
| * Accessor that returns the list of string value for each object. |
| * |
| * @return The list of string |
| */ |
| public List<String> getList() { |
| return ImmutableList.copyOf(fList); |
| } |
| |
| /** |
| * Accessor that returns the map between strings and numbers used in a |
| * scatter chart. |
| * |
| * @return The map of string |
| */ |
| public BiMap<String, Integer> getMap() { |
| return ImmutableBiMap.copyOf(fMap); |
| } |
| |
| } |