Java Code Examples for javax.script.ScriptEngineManager#put()

The following examples show how to use javax.script.ScriptEngineManager#put() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: JexlScriptEngineTest.java    From commons-jexl with Apache License 2.0 6 votes vote down vote up 
@Test
public void testScopes() throws Exception {
    ScriptEngineManager manager = new ScriptEngineManager();
    Assert.assertNotNull("Manager should not be null", manager);
    ScriptEngine engine = manager.getEngineByName("JEXL");
    Assert.assertNotNull("Engine should not be null (JEXL)", engine);
    manager.put("global", 1);
    engine.put("local", 10);
    manager.put("both", 7);
    engine.put("both", 7);
    engine.eval("local=local+1");
    engine.eval("global=global+1");
    engine.eval("both=both+1"); // should update engine value only
    engine.eval("newvar=42;");
    Assert.assertEquals(2,manager.get("global"));
    Assert.assertEquals(11,engine.get("local"));
    Assert.assertEquals(7,manager.get("both"));
    Assert.assertEquals(8,engine.get("both"));
    Assert.assertEquals(42,engine.get("newvar"));
    Assert.assertNull(manager.get("newvar"));
}
Example 2
Source File: GrokIngestMapper.java    From hadoop-solr with Apache License 2.0 5 votes vote down vote up 
public static Object executeScript(String resourcePath, Map<String, Object> params,
                                   List<String> attributesToRemove) {
  ScriptEngineManager manager = new ScriptEngineManager();
  ScriptEngine engine = manager.getEngineByName("ruby");
  InputStream resource = GrokIngestMapper.class.getClassLoader().getResourceAsStream(resourcePath);

  for (String toRemove : attributesToRemove) {
    engine.getContext().setAttribute(toRemove, params.get(toRemove),
        ScriptContext.ENGINE_SCOPE);// necessary limit the scope to just engine
  }

  for (Map.Entry<String, Object> entry : params.entrySet()) {
    manager.put(entry.getKey(), entry.getValue());
  }

  if (resource == null) {
    throw new RuntimeException("Resource not found " + resourcePath);
  }
  if (engine == null) {
    throw new RuntimeException("Script engine can not be created");
  }
  InputStreamReader is = new InputStreamReader(resource);

  try {
    Object response = engine.eval(is);
    return response;
  } catch (Exception e) {
    log.error("Error executing script: " + e.getMessage(), e);
    throw new RuntimeException("Error executing ruby script", e);
  }
}