JavaParameters.java

/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * 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:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.plugin.maven.server.execution;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Holds all parameters that needed to start new JVM instance.
 * <br />
 * Set all needed parameters and call {@link #createCommand()} to receive command line.
 *
 * @author Evgen Vidolob
 */
public class JavaParameters {

    private String workingDirectory;
    private String javaExecutable;
    private String jarPath;
    private String mainClassName;


    private List<String>        classPath    = new ArrayList<>();
    private List<String>        vmParameters = new ArrayList<>();
    private Map<String, String> enviroment   = new HashMap<>();

    public String getJavaExecutable() {
        return javaExecutable;
    }

    public String getMainClassName() {
        return mainClassName;
    }

    public List<String> getClassPath() {
        return classPath;
    }

    public List<String> getVmParameters() {
        return vmParameters;
    }

    public String getWorkingDirectory() {
        return workingDirectory;
    }

    public void setWorkingDirectory(String workingDirectory) {
        this.workingDirectory = workingDirectory;
    }

    public void setJavaExecutable(String javaExecutable) {
        this.javaExecutable = javaExecutable;
    }

    public void setMainClassName(String mainClassName) {
        this.mainClassName = mainClassName;
    }

    public String getJarPath() {
        return jarPath;
    }

    public void setJarPath(String jarPath) {
        this.jarPath = jarPath;
    }

    public Map<String, String> getEnviroment() {
        return enviroment;
    }

    public CommandLine createCommand() {
        CommandLine result = new CommandLine(javaExecutable);
        result.getEnvironment().putAll(enviroment);
        result.addParameters(vmParameters);
        result.addParameter("-classpath");
        result.addParameter(createClasspath(classPath));

        if (mainClassName != null) {
            result.addParameter(mainClassName);
        } else if (jarPath != null) {
            result.addParameter("-jar");
            result.addParameter(jarPath);
        }

        result.setWorkingDirectory(workingDirectory);
        return result;
    }

    private String createClasspath(List<String> classPath) {
        return classPath.stream().reduce((s, s2) -> s + ":" + s2).get();
    }
}