Example usage for javax.script Bindings containsKey

List of usage examples for javax.script Bindings containsKey

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Introduction

In this page you can find the example usage for javax.script Bindings containsKey.

Prototype

public boolean containsKey(Object key);

Source Link

Document

Returns true if this map contains a mapping for the specified key.

Usage

From source file:Main.java

public static void main(String[] args) {
    Bindings params = new SimpleBindings();
    params.put("stringKey", "Hello");
    params.put("valueKey", 2015);

    Object msg = params.get("stringKey");
    Object year = params.get("valueKey");
    System.out.println("stringKey" + msg);
    System.out.println("valueKey = " + year);

    params.remove("valueKey");
    year = params.get("valueKey");

    boolean containsYear = params.containsKey("valueKey");
    System.out.println("valueKey = " + year);
    System.out.println("params contains year = " + containsYear);
}

From source file:Main.java

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

    Bindings params = engine.createBindings();

    params.put("stringKey", "Hello");
    params.put("valueKey", 2015);

    Object msg = params.get("stringKey");
    Object year = params.get("valueKey");
    System.out.println("stringKey" + msg);
    System.out.println("valueKey = " + year);

    params.remove("valueKey");
    year = params.get("valueKey");

    boolean containsYear = params.containsKey("valueKey");
    System.out.println("valueKey = " + year);
    System.out.println("params contains year = " + containsYear);
}

From source file:org.apache.tinkerpop.gremlin.groovy.jsr223.GremlinGroovyScriptEngine.java

@Override
public Traversal.Admin eval(final Bytecode bytecode, final Bindings bindings, final String traversalSource)
        throws ScriptException {
    // these validations occur before merging in bytecode bindings which will override existing ones. need to
    // extract the named traversalsource prior to that happening so that bytecode bindings can share the same
    // namespace as global bindings (e.g. traversalsources and graphs).
    if (traversalSource.equals(HIDDEN_G))
        throw new IllegalArgumentException(
                "The traversalSource cannot have the name " + HIDDEN_G + " - it is reserved");

    if (bindings.containsKey(HIDDEN_G))
        throw new IllegalArgumentException("Bindings cannot include " + HIDDEN_G + " - it is reserved");

    if (!bindings.containsKey(traversalSource))
        throw new IllegalArgumentException(
                "The bindings available to the ScriptEngine do not contain a traversalSource named: "
                        + traversalSource);

    final Object b = bindings.get(traversalSource);
    if (!(b instanceof TraversalSource))
        throw new IllegalArgumentException(traversalSource + " is of type " + b.getClass().getSimpleName()
                + " and is not an instance of TraversalSource");

    final Bindings inner = new SimpleBindings();
    inner.putAll(bindings);/*from www  .  j av  a  2 s.co m*/
    inner.putAll(bytecode.getBindings());
    inner.put(HIDDEN_G, b);

    return (Traversal.Admin) this.eval(GroovyTranslator.of(HIDDEN_G).translate(bytecode), inner);
}

From source file:org.apache.tinkerpop.gremlin.groovy.jsr223.GremlinGroovyScriptEngineTest.java

@Test
public void shouldClearEngineScopeOnReset() throws Exception {
    final GremlinGroovyScriptEngine engine = new GremlinGroovyScriptEngine();
    engine.eval("x = { y -> y + 1}");
    Bindings b = engine.getContext().getBindings(ScriptContext.ENGINE_SCOPE);
    assertTrue(b.containsKey("x"));
    assertEquals(2, ((Closure) b.get("x")).call(1));

    // should clear the bindings
    engine.reset();// w  ww.  j  av a2  s . co m
    try {
        engine.eval("x(1)");
        fail("Bindings should have been cleared.");
    } catch (Exception ex) {

    }

    b = engine.getContext().getBindings(ScriptContext.ENGINE_SCOPE);
    assertFalse(b.containsKey("x"));

    // redefine x
    engine.eval("x = { y -> y + 2}");
    assertEquals(3, engine.eval("x(1)"));
    b = engine.getContext().getBindings(ScriptContext.ENGINE_SCOPE);
    assertTrue(b.containsKey("x"));
    assertEquals(3, ((Closure) b.get("x")).call(1));
}

From source file:org.lsc.utils.GroovyEvaluator.java

/**
 * Local instance evaluation./*from   www. j  a v a 2  s. c o m*/
 *
 * @param expression
 *                the expression to eval
 * @param params
 *                the keys are the name used in the
 * @return the evaluation result
 */
private Object instanceEval(final Task task, final String expression, final Map<String, Object> params) {
    Bindings bindings = engine.createBindings();

    /* Allow to have shorter names for function in the package org.lsc.utils.directory */
    String expressionImport =
            //                  "import static org.lsc.utils.directory.*\n" +
            //                  "import static org.lsc.utils.*\n" + 
            expression;

    // add LDAP interface for destination
    if (!bindings.containsKey("ldap") && task.getDestinationService() instanceof AbstractSimpleJndiService) {
        ScriptableJndiServices dstSjs = new ScriptableJndiServices();
        dstSjs.setJndiServices(((AbstractSimpleJndiService) task.getDestinationService()).getJndiServices());
        bindings.put("ldap", dstSjs);
    }

    // add LDAP interface for source
    if (!bindings.containsKey("srcLdap") && task.getSourceService() instanceof AbstractSimpleJndiService) {
        ScriptableJndiServices srcSjs = new ScriptableJndiServices();
        srcSjs.setJndiServices(((AbstractSimpleJndiService) task.getSourceService()).getJndiServices());
        bindings.put("srcLdap", srcSjs);
    }

    if (params != null) {
        for (String paramName : params.keySet()) {
            bindings.put(paramName, params.get(paramName));
        }
    }

    Object ret = null;
    try {
        if (task.getScriptIncludes() != null) {
            for (File scriptInclude : task.getScriptIncludes()) {
                String extension = FilenameUtils.getExtension(scriptInclude.getAbsolutePath());
                if ("groovy".equals(extension) || "gvy".equals(extension) || "gy".equals(extension)
                        || "gsh".equals(extension)) {
                    FileReader reader = new FileReader(scriptInclude);
                    try {
                        engine.eval(reader, bindings);
                    } finally {
                        reader.close();
                    }
                }
            }
        }
        ret = engine.eval(expressionImport, bindings);
    } catch (RuntimeException e) {
        throw e;
    } catch (Exception e) {
        LOGGER.error(e.toString());
        LOGGER.debug(e.toString(), e);
        return null;
    }

    return ret;
}

From source file:org.lsc.utils.JScriptEvaluator.java

/**
 * Local instance evaluation./*from   www.ja va  2 s  .  c o  m*/
 *
 * @param expression
 *                the expression to eval
 * @param params
 *                the keys are the name used in the
 * @return the evaluation result
 * @throws LscServiceException 
 */
private Object instanceEval(final Task task, final String expression, final Map<String, Object> params)
        throws LscServiceException {
    //      Script script = null;
    Bindings bindings = engine.createBindings();

    /* Allow to have shorter names for function in the package org.lsc.utils.directory */
    String expressionImport = "var version = java.lang.System.getProperty(\"java.version\");\n"
            + "if (version.startsWith(\"1.8.0\")) { load(\"nashorn:mozilla_compat.js\"); }\n"
            + "importPackage(org.lsc.utils.directory);\n" + "importPackage(org.lsc.utils);\n" + expression;

    //      if (cache.containsKey(expressionImport)) {
    //         script = cache.get(expressionImport);
    //      } else {
    //         script = cx.compileString(expressionImport, "<cmd>", 1, null);
    //         cache.put(expressionImport, script);
    //      }

    // add LDAP interface for destination
    if (!bindings.containsKey("ldap") && task.getDestinationService() instanceof AbstractSimpleJndiService) {
        ScriptableJndiServices dstSjs = new ScriptableJndiServices();
        dstSjs.setJndiServices(((AbstractSimpleJndiService) task.getDestinationService()).getJndiServices());
        bindings.put("ldap", dstSjs);
    }

    // add LDAP interface for source
    if (!bindings.containsKey("srcLdap") && task.getSourceService() instanceof AbstractSimpleJndiService) {
        ScriptableJndiServices srcSjs = new ScriptableJndiServices();
        srcSjs.setJndiServices(((AbstractSimpleJndiService) task.getSourceService()).getJndiServices());
        bindings.put("srcLdap", srcSjs);
    }

    if (params != null) {
        for (String paramName : params.keySet()) {
            bindings.put(paramName, params.get(paramName));
        }
    }

    Object ret = null;
    try {
        if (task.getScriptIncludes() != null) {
            for (File scriptInclude : task.getScriptIncludes()) {
                if ("js".equals(FilenameUtils.getExtension(scriptInclude.getAbsolutePath()))) {
                    FileReader reader = new FileReader(scriptInclude);
                    try {
                        engine.eval(reader, bindings);
                    } finally {
                        reader.close();
                    }
                }
            }
        }
        ret = engine.eval(expressionImport, bindings);
    } catch (ScriptException e) {
        LOGGER.error("Fail to compute expression: " + expression + " on "
                + (params.containsKey("srcBean") && ((IBean) params.get("srcBean")).getMainIdentifier() != null
                        ? "id=" + ((IBean) params.get("srcBean")).getMainIdentifier()
                        : (params.containsKey("dstBean")
                                && ((IBean) params.get("dstBean")).getMainIdentifier() != null
                                        ? "id=" + ((IBean) params.get("dstBean")).getMainIdentifier()
                                        : "unknown id !"))
                + "\nReason: " + e.toString());
        LOGGER.debug(e.toString(), e);
        throw new LscServiceException(e);
    } catch (RuntimeException e) {
        throw new LscServiceException(e);
    } catch (Exception e) {
        LOGGER.error(e.toString());
        LOGGER.debug(e.toString(), e);
        return null;
    }

    return ret;
}