Java Groovysh.execute方法代码示例

import org.codehaus.groovy.tools.shell.Groovysh; //导入方法依赖的package包/类
/**
 * Interpret file content in given shell.
 *
 * @param script Script file that should be interpreted
 * @param shell Shell where the script should be interpreted
 * @throws IOException
 */
private static void interpretFileContent(File script, Groovysh shell) throws IOException {
  BufferedReader in = new BufferedReader(new FileReader(script));
  String line;

  // Iterate over all lines and executed them one by one
  while ((line = in.readLine()) != null) {

    // Skip comments and empty lines as we don't need to interpret those
    if(line.isEmpty() || line.startsWith("#")) {
      continue;
    }

    // Render shell and command to get user perception that it was run as usual
    print(shell.renderPrompt());
    println(line);

    // Manually trigger command line parsing
    Object result = shell.execute(line);

    if (result == null) {
      break;
    }
  }
}
 

import org.codehaus.groovy.tools.shell.Groovysh; //导入方法依赖的package包/类
protected AdminHelpCommand(Groovysh shell) {
	super(shell, "adminhelp", "\\ah");  //$NON-NLS-1$ //$NON-NLS-2$
	
	//hook to introduce default imports
	final String[] imports = GroovyAdminConsole.IMPORTS.split("\n"); //$NON-NLS-1$
	for(String aimport : imports){
		shell.execute(aimport);
	}
	//for backwards compatibility add aliases to 1.7 Groovy commands
	for (Command cmd :new ArrayList<Command>(shell.getRegistry().commands())) {
		if (cmd.getHidden()) {
			continue;
		}
		String name = cmd.getName();
		if (name.startsWith(":")) { //$NON-NLS-1$
			shell.execute(":alias " + name.substring(1) + " " + name); //$NON-NLS-1$ //$NON-NLS-2$
			String shortCut = cmd.getShortcut();
			if (shortCut.startsWith(":")) { //$NON-NLS-1$
				shell.execute(":alias \\" + shortCut.substring(1) + " " + name); //$NON-NLS-1$ //$NON-NLS-2$
			}
		}
	}
}
 

import org.codehaus.groovy.tools.shell.Groovysh; //导入方法依赖的package包/类
private void initializeShellWithScript(final IO io, final String initScriptFile, final Groovysh groovy) {
    if (initScriptFile != null) {
        String line = "";
        try {
            final BufferedReader reader = new BufferedReader(new InputStreamReader(
                    new FileInputStream(initScriptFile), Charset.forName("UTF-8")));
            while ((line = reader.readLine()) != null) {
                groovy.execute(line);
            }

            reader.close();
        } catch (FileNotFoundException fnfe) {
            io.err.println(String.format("Gremlin initialization file not found at [%s].", initScriptFile));
            System.exit(1);
        } catch (IOException ioe) {
            io.err.println(String.format("Bad line in Gremlin initialization file at [%s].", line));
            System.exit(1);
        }
    }
}
 

import org.codehaus.groovy.tools.shell.Groovysh; //导入方法依赖的package包/类
/**
 * ִ�нű��ļ�
 * @param script
 * @param shell
 * @throws IOException
 */
private static void interpretFileContent(File script, Groovysh shell) throws IOException {
	BufferedReader in = new BufferedReader(new FileReader(script));
	String line;
	// Iterate over all lines and executed them one by one
	while ((line = in.readLine()) != null) {

		// Skip comments and empty lines as we don't need to interpret those
		if (line.isEmpty() || line.startsWith("#")) {
			continue;
		}
		// Render shell and command to get user perception that it was run
		// as usual
		ShellEnvironment.print(shell.renderPrompt());
		ShellEnvironment.println(line);
		// Manually trigger command line parsing
		Object result = shell.execute(line);
		if (result != null) {
			ShellEnvironment.println(result);
		}
	}
}
 

import org.codehaus.groovy.tools.shell.Groovysh; //导入方法依赖的package包/类
@Test
public void shouldFailWithoutUtilitiesPlugin() throws Exception {
    final Groovysh groovysh = new Groovysh();
    try {
        groovysh.execute("describeGraph(g.class)");
        fail("Utilities were not loaded - this should fail.");
    } catch (Exception ignored) {
    }
}
 

import org.codehaus.groovy.tools.shell.Groovysh; //导入方法依赖的package包/类
public static void exportGraphson(Groovysh shell, IO io, String query, String path) throws IOException {
	// prepare to export
	path = resolvePath(path, DEFAULT_JSON_NAME);
	File file = new File(path);
	FileOutputStream f = new FileOutputStream(file);
	GraphSONWriter w = GraphSONWriter.build().create();
	
	// execute the given query
	shell.execute("t = " + query + ";null");
	Traversal<?, Vertex> traversal = (Traversal<?, Vertex>) shell.getInterp().getContext().getProperty("t");
	
	// try exporting
	try {
		w.writeVertices(f, traversal);
	} catch (ClassCastException e){
		shell.execute("t = " + query + ";null");
		Traversal<?, Edge> edgeTraversal = (Traversal<?, Edge>) shell.getInterp().getContext().getProperty("t");
		while (edgeTraversal.hasNext()){
			Edge edge = edgeTraversal.next();
			w.writeEdge(f, edge);
		}
		
	}
	// done
	f.close();
	io.out.println("==> exported to " + path);				
}
 

import org.codehaus.groovy.tools.shell.Groovysh; //导入方法依赖的package包/类
/**
 * @param evalString commands that will be executed at startup after loading files given with filenames param
 * @param filenames  files that will be loaded at startup
 */
protected void startGroovysh(Groovysh shell, String evalString, List<String> filenames) throws IOException {
    int code;
    SecurityManager psm = System.getSecurityManager();
    System.setSecurityManager(new NoExitSecurityManager());

    System.out.println("  _    __          __            _");
    System.out.println(" | |  / /__  _____/ /____  _  __(_)_  ______ ___");
    System.out.println(" | | / / _ \\/ ___/ __/ _ \\| |/_/ / / / / __ `__ \\");
    System.out.println(" | |/ /  __/ /  / /_/  __/>  </ / /_/ / / / / / /   v" + getClass().getPackage().getImplementationVersion());
    System.out.println(" |___/\\___/_/   \\__/\\___/_/|_/_/\\__,_/_/ /_/ /_/");
    System.out.println("");
    System.out.println("Usage:");
    System.out.println("  vertex1=v['vertex1'] - gets the vertex with id 'v1' and assigns it to variable 'v'");
    System.out.println("  vertex1.methods      - gets the methods available on the memgraph object");
    System.out.println("  vertex1.properties   - gets the properties available on the memgraph object");
    System.out.println("  vertex1.delete()     - deletes the vertex v1");
    System.out.println("  p1.delete()          - deletes the property currently referenced by p1");
    System.out.println("  q.has('name', 'joe').vertices().each() { println it.id } - execute a query for all vertices with property 'name' equal to 'joe'");
    System.out.println("  g.query('apple', auths).vertices()[0]                    - execute a query for 'apple' and get the first match");
    System.out.println("");
    System.out.println("Global Properties:");
    System.out.println("  g      - the Graph object");
    System.out.println("  q      - a query object");
    System.out.println("  auths  - the currently set query authorizations");
    System.out.println("  time   - the currently set query time");
    System.out.println("  now    - the current time");
    System.out.println("  v      - vertex map (usage: v['v1'])");
    System.out.println("  e      - edge map (usage: e['e1'])");
    System.out.println("  cypher - run a cypher query (usage: cypher(\"\"\"MATCH (n) RETURN n LIMIT 10\"\"\"))");
    try {
        shell.execute("import " + Visibility.class.getPackage().getName() + ".*;");
        shell.execute("import " + GeoPoint.class.getPackage().getName() + ".*;");
        shell.execute("import " + GeoCompare.class.getPackage().getName() + ".*;");
        code = shell.run(evalString, filenames);
    } finally {
        System.setSecurityManager(psm);
    }

    // Force the JVM to exit at this point, since shell could have created threads or
    // popped up Swing components that will cause the JVM to linger after we have been
    // asked to shutdown

    System.exit(code);
}
 

import org.codehaus.groovy.tools.shell.Groovysh; //导入方法依赖的package包/类
/**
 * @param evalString commands that will be executed at startup after loading files given with filenames param
 * @param filenames  files that will be loaded at startup
 */
protected void startGroovysh(Groovysh shell, String evalString, List<String> filenames) throws IOException {
    int code;
    SecurityManager psm = System.getSecurityManager();
    System.setSecurityManager(new NoExitSecurityManager());

    System.out.println("  _    __          __            _");
    System.out.println(" | |  / /__  _____/ /____  _  __(_)_  ______ ___");
    System.out.println(" | | / / _ \\/ ___/ __/ _ \\| |/_/ / / / / __ `__ \\");
    System.out.println(" | |/ /  __/ /  / /_/  __/>  </ / /_/ / / / / / /   v" + getClass().getPackage().getImplementationVersion());
    System.out.println(" |___/\\___/_/   \\__/\\___/_/|_/_/\\__,_/_/ /_/ /_/");
    System.out.println("");
    System.out.println("Usage:");
    System.out.println("  vertex1=v['vertex1'] - gets the vertex with id 'v1' and assigns it to variable 'v'");
    System.out.println("  vertex1.methods      - gets the methods available on the Vertexium object");
    System.out.println("  vertex1.properties   - gets the properties available on the Vertexium object");
    System.out.println("  vertex1.delete()     - deletes the vertex v1");
    System.out.println("  p1.delete()          - deletes the property currently referenced by p1");
    System.out.println("  q.has('name', 'joe').vertices().each() { println it.id } - execute a query for all vertices with property 'name' equal to 'joe'");
    System.out.println("  g.query('apple', auths).vertices()[0]                    - execute a query for 'apple' and get the first match");
    System.out.println("");
    System.out.println("Global Properties:");
    System.out.println("  g      - the Graph object");
    System.out.println("  q      - a query object");
    System.out.println("  auths  - the currently set query authorizations");
    System.out.println("  time   - the currently set query time");
    System.out.println("  now    - the current time");
    System.out.println("  v      - vertex map (usage: v['v1'])");
    System.out.println("  e      - edge map (usage: e['e1'])");
    System.out.println("  cypher - run a cypher query (usage: cypher(\"\"\"MATCH (n) RETURN n LIMIT 10\"\"\"))");
    try {
        shell.execute("import " + Visibility.class.getPackage().getName() + ".*;");
        shell.execute("import " + GeoPoint.class.getPackage().getName() + ".*;");
        shell.execute("import " + GeoCompare.class.getPackage().getName() + ".*;");
        code = shell.run(evalString, filenames);
    } finally {
        System.setSecurityManager(psm);
    }

    // Force the JVM to exit at this point, since shell could have created threads or
    // popped up Swing components that will cause the JVM to linger after we have been
    // asked to shutdown

    System.exit(code);
}