Examples of org.apache.bsf.BSFEngine

org.apache.bsf.BSFEngine
This is the view of a scripting engine assumed by the Bean Scripting Framework. This interface is used when an application decides to run some script under application control. (This is the reverse of the more common situation, which is that of the scripting language calling into the application.)
When a scripting engine is first fired up, the initialize() method is called right after construction.
A scripting engine must provide two access points for applications to call into them: via function calls and via expression evaluation. It must also support loading scripts.
A scripting engine is a property change listener and will be notified when any of the relevant properties of the manager change. (See BSFManager to see which of its properties are bound.) @author Sanjiva Weerawarana @author Matthew J. Duftler

            String scriptLanguage = BSFManager.getLangFromFilename(scriptName);
            BSFManager bsfManager = new BSFManager();
            bsfManager.setClassLoader(BSFManager.class.getClassLoader());
            bsfManager.declareBean("_AxisService", axisService, AxisService.class);


            BSFEngine bsfEngine = bsfManager.loadScriptingEngine(scriptLanguage);
            bsfEngine.exec(scriptName, 0, 0, scriptSrc);


            ServiceContext serviceContext = mc.getServiceContext();
            serviceContext.setProperty(BSFENGINE_PROP, bsfEngine);


            OMElementConvertor convertor = ConvertorFactory.createOMElementConvertor(axisService, scriptName);

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      BSFManager bsfManager = new BSFManager();
      bsfManager.setClassLoader(BSFManager.class.getClassLoader());
      // bsfManager.declareBean("_AxisService", axisService,
      // AxisService.class);


      BSFEngine bsfEngine = bsfManager
          .loadScriptingEngine(scriptLanguage);
      Object scriptSrc = readScript();
      bsfEngine.exec(scriptName, 0, 0, scriptSrc);


    } catch (BSFException e) {
      throw new RuntimeException(e);
    }
  }

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            return manager;
        }
        BSFManager m = new BSFManager();
        m.setClassLoader(getScriptClassLoader());
        if (getKeepEngine()) {
            BSFEngine e = manager.loadScriptingEngine(getLanguage());
            this.manager = m;
            this.engine  = e;
        }
        return m;
    }

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      JMeterContext jmctx = JMeterContextService.getContext();
      JMeterVariables vars = jmctx.getVariables();
      mgr.declareBean("ctx", jmctx, jmctx.getClass()); // $NON-NLS-1$
      mgr.declareBean("vars", vars, vars.getClass()); // $NON-NLS-1$


      BSFEngine bsfEngine = mgr.loadScriptingEngine(getScriptLanguage());


      Object bsfOut = null;
      if (fileName.length()>0) {
        res.setSamplerData("File: "+fileName);
        is = new FileInputStream(fileName);
        bsfOut = bsfEngine.eval(fileName, 0, 0, IOUtils.toString(is));
      } else {
        res.setSamplerData("[script]");
          bsfOut = bsfEngine.eval("script", 0, 0, request);
      }


      if (bsfOut != null) {
          res.setResponseData(bsfOut.toString().getBytes());
      }

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public class BSF implements Script {
    public Object run(String language, String name, String scriptStr, String methodName, Object[] argValues)
            throws Exception {
        BSFManager manager = new BSFManager();
        BSFEngine engine = manager.loadScriptingEngine(language);


        manager.exec(language, "service script for '" +
                name + "'", 0, 0, scriptStr);


        Object result = engine.call(null, methodName, argValues);
        return result;
    }

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            return manager;
        }
        BSFManager m = new BSFManager();
        m.setClassLoader(getScriptClassLoader());
        if (getKeepEngine()) {
            BSFEngine e = manager.loadScriptingEngine(getLanguage());
            this.manager = m;
            this.engine  = e;
        }
        return m;
    }

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      JMeterContext jmctx = JMeterContextService.getContext();
      JMeterVariables vars = jmctx.getVariables();
      mgr.declareBean("ctx", jmctx, jmctx.getClass()); // $NON-NLS-1$
      mgr.declareBean("vars", vars, vars.getClass()); // $NON-NLS-1$


      BSFEngine bsfEngine = mgr.loadScriptingEngine(getScriptLanguage());


      Object bsfOut = null;
      if (fileName.length()>0) {
        res.setSamplerData("File: "+fileName);
        is = new FileInputStream(fileName);
        bsfOut = bsfEngine.eval(fileName, 0, 0, IOUtils.toString(is));
      } else {
        res.setSamplerData("[script]");
          bsfOut = bsfEngine.eval("script", 0, 0, request);
      }


      if (bsfOut != null) {
          res.setResponseData(bsfOut.toString().getBytes());
      }

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    @Test
    public void testAccess() throws BSFException {
        // tag::bsf_access[]
        BSFManager manager = new BSFManager();
        BSFEngine bsfEngine = manager.loadScriptingEngine("groovy");
        manager.declareBean("myvar", "hello", String.class);
        Object myvar = manager.lookupBean("myvar");
        String result = (String) bsfEngine.call(myvar, "reverse", new Object[0]);
        assertEquals("olleh", result);
        // end::bsf_access[]
    }

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        answer = manager.eval("groovy", "Test1.groovy", 0, 0, "abc");
        assertNull("Undeclared beans should yield null", answer);
    }


    public void testCall() throws Exception {
        BSFEngine bsfEngine = manager.loadScriptingEngine("groovy");
        manager.declareBean("myvar", "hello", String.class);
        Object myvar = manager.lookupBean("myvar");
        String result = (String) bsfEngine.call(myvar, "reverse", new Object[]{});
        assertEquals("olleh", result);
    }

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        manager = new BSFManager();
    }


    public void testVersion() throws Exception {
        //System.out.println("BSFManager.getVersion() = " + BSFManager.getVersion());
        BSFEngine bsfEngine = manager.loadScriptingEngine("groovy");
        assertEquals(CACHING_ENGINE, bsfEngine.getClass());
    }

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