| /******************************************************************************* |
| * Copyright (c) 2017 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.analysis.xml.core.fsm.model.values; |
| |
| import java.util.Objects; |
| import java.util.function.Supplier; |
| |
| import org.eclipse.jdt.annotation.Nullable; |
| import org.eclipse.tracecompass.internal.tmf.analysis.xml.core.fsm.model.DataDrivenStateSystemPath; |
| import org.eclipse.tracecompass.internal.tmf.analysis.xml.core.fsm.model.runtime.DataDrivenScenarioInfo; |
| import org.eclipse.tracecompass.internal.tmf.analysis.xml.core.fsm.module.IAnalysisDataContainer; |
| import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem; |
| import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue; |
| import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; |
| |
| /** |
| * A value that resolves to the value at a given path in the state system |
| * |
| * @author Geneviève Bastien |
| * @author Florian Wininger |
| */ |
| public class DataDrivenValueQuery extends DataDrivenValue { |
| |
| private final DataDrivenStateSystemPath fQuery; |
| |
| /** |
| * Constructor |
| * |
| * @param mappingGroupId |
| * The ID of the mapping group to use to map the retrieved value to |
| * another value |
| * @param forcedType |
| * The desired type of the value |
| * @param query |
| * The path of the query in the state system |
| */ |
| public DataDrivenValueQuery(@Nullable String mappingGroupId, ITmfStateValue.Type forcedType, DataDrivenStateSystemPath query) { |
| super(mappingGroupId, forcedType); |
| fQuery = query; |
| } |
| |
| @Override |
| protected @Nullable Object resolveValue(int quark, IAnalysisDataContainer container) { |
| return executeQuery(() -> fQuery.getQuark(null, ITmfStateSystem.ROOT_ATTRIBUTE, null, container), container); |
| } |
| |
| @Override |
| protected @Nullable Object resolveValue(ITmfEvent event, int quark, DataDrivenScenarioInfo scenarioInfo, IAnalysisDataContainer container) { |
| return executeQuery(() -> fQuery.getQuark(event, ITmfStateSystem.ROOT_ATTRIBUTE, scenarioInfo, container), container); |
| } |
| |
| private static @Nullable Object executeQuery(Supplier<Integer> function, IAnalysisDataContainer container) { |
| /* Query the state system for the value */ |
| Object value = null; |
| ITmfStateSystem ss = container.getStateSystem(); |
| |
| @SuppressWarnings("null") |
| int quarkQuery = function.get(); |
| /* |
| * the query can fail : for example, if a value is requested but has not been |
| * set yet |
| */ |
| if (quarkQuery >= 0) { |
| value = ss.queryOngoing(quarkQuery); |
| } |
| return value; |
| } |
| |
| @Override |
| public String toString() { |
| return "DataDrivenValueQuery: " + fQuery; //$NON-NLS-1$ |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(super.hashCode(), fQuery); |
| } |
| |
| @Override |
| public boolean equals(@Nullable Object obj) { |
| if (!(obj instanceof DataDrivenValueQuery)) { |
| return false; |
| } |
| DataDrivenValueQuery other = (DataDrivenValueQuery) obj; |
| return Objects.equals(fQuery, other.fQuery); |
| } |
| |
| } |