com.powsybl.computation.CommandExecution Maven / Gradle / Ivy

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/**
 * Copyright (c) 2016, All partners of the iTesla project (http://www.itesla-project.eu/consortium)
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
package com.powsybl.computation;

import com.google.common.collect.ImmutableMap;

import java.util.Map;
import java.util.Objects;

/**
 *
 * A command execution essentially defines how a {@link Command} should be executed.
 * In particular, an execution number defines how many times the underlying command should be executed.
 *
 * For each execution, the {@link ComputationManager} should increment an execution index and request
 * the corresponding argument values.
 * This mechanism may be used to easily submit a number of commands which differ only by their argument.
 *
 * @author Geoffroy Jamgotchian 
 */
public class CommandExecution {

    public static Map getExecutionVariables(Map variables, CommandExecution commandExecution) {
        Objects.requireNonNull(variables);
        Objects.requireNonNull(commandExecution);
        if (commandExecution.getOverloadedVariables() != null) {
            return ImmutableMap.builder()
                    .putAll(variables)
                    .putAll(commandExecution.getOverloadedVariables())
                    .build();

        }
        return variables;
    }

    private final Command command;

    private final int executionCount;

    private final int priority;

    private final Map tags;

    private final Map overloadedVariables; // variables overloaded for this execution

    public CommandExecution(Command command, int executionCount) {
        this(command, executionCount, Integer.MAX_VALUE);
    }

    public CommandExecution(Command command, int executionCount, int priority) {
        this(command, executionCount, priority, null);
    }

    public CommandExecution(Command command, int executionCount, int priority, Map tags) {
        this(command, executionCount, priority, tags, null);
    }

    public CommandExecution(Command command, int executionCount, int priority, Map tags, Map overloadedVariables) {
        this.command = Objects.requireNonNull(command, "command is null");
        if (executionCount < 1) {
            throw new IllegalArgumentException("execution count must be > 0");
        }
        this.executionCount = executionCount;
        this.priority = priority;
        this.tags = tags;
        this.overloadedVariables = overloadedVariables;
    }

    public Command getCommand() {
        return command;
    }

    public int getExecutionCount() {
        return executionCount;
    }

    public int getPriority() {
        return priority;
    }

    public Map getTags() {
        return tags;
    }

    public Map getOverloadedVariables() {
        return overloadedVariables;
    }
}