Example usage for javax.script Compilable compile

Introduction

In this page you can find the example usage for javax.script Compilable compile.

Prototype

public CompiledScript compile(Reader script) throws ScriptException;

Source Link

Document

Compiles the script (source read from Reader) for later execution.

Usage

From source file:CompilableDemo.java

public static void main(String[] args) throws Exception {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("js");

    Compilable jsCompile = (Compilable) engine;
    CompiledScript script = jsCompile.compile("function hi () {print ('www.java2s.com !'); }; hi ();");

    for (int i = 0; i < 5; i++) {
        script.eval();//from   www.j  a v a  2s .c  o m
    }
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("JavaScript");

    if (!(engine instanceof Compilable)) {
        System.out.println("Script compilation not supported.");
        return;//ww  w.j  ava  2  s  . c  om
    }
    Compilable comp = (Compilable) engine;

    CompiledScript cScript = comp.compile("print(n1 + n2)");

    Bindings scriptParams = engine.createBindings();
    scriptParams.put("n1", 2);
    scriptParams.put("n2", 3);
    cScript.eval(scriptParams);

    scriptParams.put("n1", 9);
    scriptParams.put("n2", 7);
    cScript.eval(scriptParams);
}

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From source file:CompileTest.java

public static void main(String args[]) {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("javascript");
    engine.put("counter", 0);
    if (engine instanceof Compilable) {
        Compilable compEngine = (Compilable) engine;
        try {//ww w .  j  a v a  2s . c  o  m
            CompiledScript script = compEngine
                    .compile("function count(){counter=counter+1;return counter;}; count();");
            System.out.println(script.eval());
            System.out.println(script.eval());
            System.out.println(script.eval());
        } catch (ScriptException e) {
            System.err.println(e);
        }
    } else {
        System.err.println("Engine can't compile code");
    }
}

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From source file:TestCompilationSpeed.java

public static void main(String[] args) throws Exception {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("JavaScript");

    String fact = "function fact (n){if (n == 0)return 1; else return n*fact (n-1);};";

    long time = System.currentTimeMillis();
    for (int i = 0; i < MAX_ITERATIONS; i++)
        engine.eval(fact);/* ww  w. j  ava 2  s.c  o m*/
    System.out.println(System.currentTimeMillis() - time);

    Compilable compilable = null;
    if (engine instanceof Compilable) {
        compilable = (Compilable) engine;
        CompiledScript script = compilable.compile(fact);

        time = System.currentTimeMillis();
        for (int i = 0; i < MAX_ITERATIONS; i++)
            script.eval();
        System.out.println(System.currentTimeMillis() - time);
    }
}

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From source file:com.kactech.otj.examples.App_otj.java

@SuppressWarnings("unchecked")
public static void main(String[] args) throws Exception {
    String command = null;//from   ww  w  .  j a v  a  2 s .  co m
    String hisacct = null;
    String hisacctName = null;
    String hisacctAsset = null;
    String asset = null;
    String assetName = null;
    List<String> argList = null;
    boolean newAccount = false;
    File dir = null;
    ConnectionInfo connection = null;
    List<ScriptFilter> filters = null;

    CommandLineParser parser = new GnuParser();
    CommandLine cmd = null;
    try {
        cmd = parser.parse(options, args);
    } catch (Exception e) {
        System.err.println("Command-line parsing error: " + e.getMessage());
        help();
        System.exit(-1);
    }
    if (cmd.hasOption('h')) {
        help();
        System.exit(0);
    }
    @SuppressWarnings("unchecked")
    List<String> list = cmd.getArgList();
    if (list.size() > 1) {
        System.err.println("only one command is supported, you've typed " + list);
        help();
        System.exit(-1);
    }
    if (list.size() > 0)
        command = list.get(0).trim();

    List<SampleAccount> accounts = ExamplesUtils.getSampleAccounts();

    if (cmd.hasOption('s')) {
        String v = cmd.getOptionValue('s').trim();
        connection = ExamplesUtils.findServer(v);
        if (connection == null) {
            System.err.println("unknown server: " + v);
            System.exit(-1);
        }
    } else {
        connection = ExamplesUtils.findServer(DEF_SERVER_NAME);
        if (connection == null) {
            System.err.println("default server not found server: " + DEF_SERVER_NAME);
            System.exit(-1);
        }
    }

    if (cmd.hasOption('t')) {
        String v = cmd.getOptionValue('t');
        for (SampleAccount ac : accounts)
            if (ac.accountName.startsWith(v)) {
                hisacct = ac.accountID;
                hisacctName = ac.accountName;
                hisacctAsset = ac.assetID;
                break;
            }
        if (hisacct == null)
            if (mayBeValid(v))
                hisacct = v;
            else {
                System.err.println("invalid hisacct: " + v);
                System.exit(-1);
            }
    }
    if (cmd.hasOption('p')) {
        String v = cmd.getOptionValue('p');
        for (SampleAccount ac : accounts)
            if (ac.assetName.startsWith(v)) {
                asset = ac.assetID;
                assetName = ac.assetName;
                break;
            }
        if (asset == null)
            if (mayBeValid(v))
                asset = v;
            else {
                System.err.println("invalid asset: " + v);
                System.exit(-1);
            }
    }

    if (cmd.hasOption('a')) {
        String v = cmd.getOptionValue('a');
        argList = new ArrayList<String>();
        boolean q = false;
        StringBuilder b = new StringBuilder();
        for (int i = 0; i < v.length(); i++) {
            char c = v.charAt(i);
            if (c == '"') {
                if (q) {
                    argList.add(b.toString());
                    b = null;
                    q = false;
                    continue;
                }
                if (b != null)
                    argList.add(b.toString());
                b = new StringBuilder();
                q = true;
                continue;
            }
            if (c == ' ' || c == '\t') {
                if (q) {
                    b.append(c);
                    continue;
                }
                if (b != null)
                    argList.add(b.toString());
                b = null;
                continue;
            }
            if (b == null)
                b = new StringBuilder();
            b.append(c);
        }
        if (b != null)
            argList.add(b.toString());
        if (q) {
            System.err.println("unclosed quote in args: " + v);
            System.exit(-1);
        }
    }

    dir = new File(cmd.hasOption('d') ? cmd.getOptionValue('d') : DEF_CLIENT_DIR);

    if (cmd.hasOption('x'))
        del(dir);

    newAccount = cmd.hasOption('n');

    if (cmd.hasOption('f')) {
        filters = new ArrayList<ScriptFilter>();
        ScriptEngineManager manager = new ScriptEngineManager();
        ScriptEngine engine = manager.getEngineByName("JavaScript");
        Compilable compilingEngine = (Compilable) engine;
        for (String fn : cmd.getOptionValue('f').split(",")) {
            fn = fn.trim();
            if (fn.isEmpty())
                continue;
            fn += ".js";
            Reader r = null;
            try {
                r = new InputStreamReader(new FileInputStream(new File("filters", fn)), Utils.UTF8);
            } catch (Exception e) {
                try {
                    r = new InputStreamReader(
                            App_otj.class.getResourceAsStream("/com/kactech/otj/examples/filters/" + fn));
                } catch (Exception e2) {
                }
            }
            if (r == null) {
                System.err.println("filter not found: " + fn);
                System.exit(-1);
            } else
                try {
                    CompiledScript compiled = compilingEngine.compile(r);
                    ScriptFilter sf = new ScriptFilter(compiled);
                    filters.add(sf);
                } catch (Exception ex) {
                    System.err.println("error while loading " + fn + ": " + ex);
                    System.exit(-1);
                }
        }
    }

    System.out.println("server: " + connection.getEndpoint() + " " + connection.getID());
    System.out.println("command: '" + command + "'");
    System.out.println("args: " + argList);
    System.out.println("hisacct: " + hisacct);
    System.out.println("hisacctName: " + hisacctName);
    System.out.println("hisacctAsset: " + hisacctAsset);
    System.out.println("asset: " + asset);
    System.out.println("assetName: " + assetName);

    if (asset != null && hisacctAsset != null && !asset.equals(hisacctAsset)) {
        System.err.println("asset differs from hisacctAsset");
        System.exit(-1);
    }

    EClient client = new EClient(dir, connection);
    client.setAssetType(asset != null ? asset : hisacctAsset);
    client.setCreateNewAccount(newAccount);
    if (filters != null)
        client.setFilters(filters);

    try {
        Utils.init();
        Client.DEBUG_JSON = true;
        client.init();

        if ("balance".equals(command))
            System.out.println("Balance: " + client.getAccount().getBalance().getAmount());
        else if ("acceptall".equals(command))
            client.processInbox();
        else if ("transfer".equals(command)) {
            if (hisacct == null)
                System.err.println("please specify --hisacct");
            else {
                int idx = argList != null ? argList.indexOf("amount") : -1;
                if (idx < 0)
                    System.err.println("please specify amount");
                else if (idx == argList.size())
                    System.err.println("amount argument needs value");
                else {
                    Long amount = -1l;
                    try {
                        amount = new Long(argList.get(idx + 1));
                    } catch (Exception e) {

                    }
                    if (amount <= 0)
                        System.err.println("invalid amount");
                    else {
                        client.notarizeTransaction(hisacct, amount);
                    }
                }
            }
        } else if ("reload".equals(command))
            client.reloadState();
        else if ("procnym".equals(command))
            client.processNymbox();
    } finally {
        client.saveState();
        client.close();
    }
}

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From source file:com.espertech.esper.epl.script.jsr223.JSR223Helper.java

public static CompiledScript verifyCompileScript(ExpressionScriptProvided script, String dialect)
        throws ExprValidationException {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName(dialect);
    if (engine == null) {
        throw new ExprValidationException("Failed to obtain script engine for dialect '" + dialect
                + "' for script '" + script.getName() + "'");
    }/*from  w  ww.jav  a  2  s  .c  o  m*/
    engine.put(ScriptEngine.FILENAME, script.getName());

    Compilable compilingEngine = (Compilable) engine;
    try {
        return compilingEngine.compile(script.getExpression());
    } catch (ScriptException ex) {
        String message = "Exception compiling script '" + script.getName() + "' of dialect '" + dialect + "': "
                + getScriptCompileMsg(ex);
        log.info(message, ex);
        throw new ExprValidationException(message, ex);
    }
}

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From source file:de.ingrid.iplug.ckan.utils.ScriptEngine.java

/**
 * Get the compiled version of the given script
 * @param script The script file//from  w  w  w.j  a  va 2  s . c om
 * @return CompiledScript
 * @throws ScriptException
 * @throws IOException 
 */
protected static CompiledScript getCompiledScript(Resource script) throws ScriptException, IOException {
    String filename = script.getFilename();
    if (!compiledScripts.containsKey(filename)) {
        javax.script.ScriptEngine engine = getEngine(script);
        if (engine instanceof Compilable) {
            Compilable compilable = (Compilable) engine;
            CompiledScript compiledScript = compilable.compile(new InputStreamReader(script.getInputStream()));
            compiledScripts.put(filename, compiledScript);
        }
    }
    return compiledScripts.get(filename);
}

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From source file:org.zaproxy.VerifyScripts.java

private static Consumer<Reader> parser(Compilable engine) {
    return r -> {
        try {//from w  ww. j a  v  a 2 s.com
            engine.compile(r);
        } catch (ScriptException e) {
            throw new RuntimeException(e);
        }
    };
}

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From source file:org.nuxeo.ecm.webengine.scripting.Scripting.java

public static CompiledScript compileScript(ScriptEngine engine, File file) throws ScriptException {
    if (engine instanceof Compilable) {
        Compilable comp = (Compilable) engine;
        try {//ww  w .  ja v  a2  s. c  om
            Reader reader = new FileReader(file);
            try {
                return comp.compile(reader);
            } finally {
                reader.close();
            }
        } catch (IOException e) {
            throw new ScriptException(e);
        }
    } else {
        return null;
    }
}

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From source file:net.orzo.scripting.SourceCode.java

/**
 * @throws ScriptException/*from ww w .  j a v a 2  s  . co  m*/
 */
public CompiledScript compile(Compilable compilable) throws ScriptException {
    return compilable.compile(getContents());
}

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