コード例 #1
0
ファイル: Distributor.java プロジェクト: superyfwy/db4o
  @SuppressWarnings("unchecked")
  public <S> ProxyObject<S> proxyFor(long id, Class<S> clazz) {

    ProxyObject<S> proxy = (ProxyObject<S>) proxying.get(id);

    if (proxy == null) {

      synchronized (proxying) {
        proxy = (ProxyObject<S>) proxying.get(id);
        if (proxy != null) {
          return proxy;
        }

        proxy = new ProxyObject<S>(this, id, clazz);

        proxying.put(proxy.getId(), proxy);
      }
    }

    return proxy;
  }
コード例 #2
0
ファイル: ObjectInspector.java プロジェクト: cpoliwoda/VRL
  public ObjectDescription generateObjectDescription(Object o, Integer objID, boolean addObject) {

    ObjectDescription result = null;

    // Object annotations
    ObjectInfo objectInfo = null;

    Annotation[] objectAnnotations = o.getClass().getAnnotations();

    for (Annotation a : objectAnnotations) {
      if (a.annotationType().equals(ObjectInfo.class)) {
        objectInfo = (ObjectInfo) a;
        break;
      }
    }

    if (addObject) {
      ObjectEntry oEntry = new ObjectEntry(o);
      if (objID != null) {
        objects.addWithID(oEntry, objID);
      } else {
        objects.add(oEntry);
        objID = oEntry.getID();
      }
    }

    boolean hasCustomReferenceMethod = false;

    // we need special treatment for proxy objects
    if (o instanceof ProxyObject) {
      ProxyObject proxy = (ProxyObject) o;

      result = proxy.getObjectDescription();

      result.setName(o.getClass().getName());

      result.setID(objID);

      // update objID of methods
      for (MethodDescription mDesc : result.getMethods()) {
        mDesc.setObjectID(objID);
      }

    } else {
      result = new ObjectDescription();
      result.setInfo(objectInfo);

      result.setName(o.getClass().getName());

      result.setID(objID);

      Class<?> c = o.getClass();

      Method[] theMethods = null;

      if (objectInfo != null && objectInfo.showInheritedMethods()) {
        theMethods = c.getMethods();
      } else {
        ArrayList<Method> methods = new ArrayList<Method>();

        // methods declared by class c
        for (Method m : c.getDeclaredMethods()) {
          methods.add(m);
        }

        // methods declared in superclasses of c
        for (Method m : c.getMethods()) {
          MethodInfo info = m.getAnnotation(MethodInfo.class);
          // if m is marked as inheritGUI this method will
          // be visualized even if it is a method declared
          // in a superclass of c
          if (info != null && info.inheritGUI()) {
            if (!methods.contains(m)) {
              methods.add(m);
            }
          }
        }

        Method[] tmpArray = new Method[methods.size()];

        theMethods = methods.toArray(tmpArray);
      }

      for (int i = 0; i < theMethods.length; i++) {

        // filter groovy object specific methods
        String method = theMethods[i].getName();
        boolean isGroovyObject = o instanceof GroovyObject;
        boolean isGroovyMethod =
            method.equals("setProperty")
                || method.equals("getProperty")
                || method.equals("invokeMethod")
                || method.equals("getMetaClass")
                || method.equals("setMetaClass"); // ||
        //                            // the following methods are only present
        //                            // for Groovy >= 1.6
        //                            method.equals("super$1$wait") ||
        //                            method.equals("super$1$toString") ||
        //                            method.equals("super$1$notify") ||
        //                            method.equals("super$1$notifyAll") ||
        //                            method.equals("super$1$getClass") ||
        //                            method.equals("super$1$equals") ||
        //                            method.equals("super$1$clone") ||
        //                            method.equals("super$1$hashCode") ||
        //                            method.equals("super$1$finalize");

        // For Groovy >= 1.6 private methods have $ sign in their
        // name, e.g.,
        //   private doSomething()
        // will be changed to
        //   this$2$doSomething()
        // which is unfortunately accessible and thus will be
        // visualized by vrl.
        // To prevent groovys strange behavior
        // methods with $ sign are ignored and treated as private.
        boolean isPrivateGroovyMethod = method.contains("$");

        // TODO improve that code!
        if ((isGroovyObject && isGroovyMethod) || isPrivateGroovyMethod) {
          continue;
        }

        Class[] parameterTypes = theMethods[i].getParameterTypes();

        Annotation[][] allParameterAnnotations = theMethods[i].getParameterAnnotations();

        ArrayList<String> paramNames = new ArrayList<String>();

        ArrayList<ParamInfo> paramAnnotations = new ArrayList<ParamInfo>();
        ArrayList<ParamGroupInfo> paramGroupAnnotations = new ArrayList<ParamGroupInfo>();

        // retrieving annotation information for each parameter
        for (int j = 0; j < allParameterAnnotations.length; j++) {

          Annotation[] annotations = allParameterAnnotations[j];

          // add name element and set it to null
          // because we don't know if parameter j is annotated
          paramNames.add(null);
          paramAnnotations.add(null);
          paramGroupAnnotations.add(null);

          // check all annotations of parameter j
          // if we have a ParamInfo annotation retrieve data
          // and store it as element of paramName
          for (Annotation a : annotations) {
            if (a.annotationType().equals(ParamInfo.class)) {
              ParamInfo n = (ParamInfo) a;
              if (!n.name().equals("")) {
                paramNames.set(j, n.name());
              }
              paramAnnotations.set(j, n);
            } else {
              if (a.annotationType().equals(ParamGroupInfo.class)) {
                ParamGroupInfo n = (ParamGroupInfo) a;
                paramGroupAnnotations.set(j, n);
              }
            }
          } // end for a
        } // end for j

        // convert list to array
        String[] parameterNames = paramNames.toArray(new String[paramNames.size()]);

        ParamInfo[] parameterAnnotations =
            paramAnnotations.toArray(new ParamInfo[paramAnnotations.size()]);

        ParamGroupInfo[] parameterGroupAnnotations =
            paramGroupAnnotations.toArray(new ParamGroupInfo[paramGroupAnnotations.size()]);

        Class returnType = theMethods[i].getReturnType();

        String methodString = theMethods[i].getName();
        String methodTitle = "";
        String returnValueName = null;

        int modifiers = theMethods[i].getModifiers();

        String modifierString = Modifier.toString(modifiers);

        // Method Annotations
        Annotation[] annotations = theMethods[i].getAnnotations();
        MethodInfo methodInfo = null;

        OutputInfo outputInfo = null;

        boolean interactive = true;
        boolean hide = false;

        for (Annotation a : annotations) {
          if (a.annotationType().equals(MethodInfo.class)) {
            MethodInfo n = (MethodInfo) a;

            methodTitle = n.name();
            interactive = n.interactive();
            hide = n.hide();
            returnValueName = n.valueName();

            methodInfo = n;
          }

          if (a.annotationType().equals(OutputInfo.class)) {
            outputInfo = (OutputInfo) a;
          }
        }

        if (theMethods[i].getAnnotation(ReferenceMethodInfo.class) != null) {
          hasCustomReferenceMethod = true;
          MethodDescription customReferenceMethod =
              new MethodDescription(
                  objID,
                  0,
                  methodString,
                  methodTitle,
                  null,
                  parameterTypes,
                  parameterNames,
                  parameterAnnotations,
                  parameterGroupAnnotations,
                  returnType,
                  returnValueName,
                  interactive,
                  methodInfo,
                  outputInfo);

          if (customReferenceMethod.getParameterTypes() == null
              || customReferenceMethod.getParameterTypes().length != 1) {
            throw new IllegalArgumentException(
                " Cannot to use "
                    + "\""
                    + methodString
                    + "\" as reference method"
                    + " because the number of parameters does not"
                    + " match. Exactly one parameter must be"
                    + " provided.");
          }

          if (customReferenceMethod.getReturnType() == void.class
              || customReferenceMethod.getReturnType().isPrimitive()) {
            throw new IllegalArgumentException(
                " Cannot to use "
                    + "\""
                    + methodString
                    + "\" as reference method"
                    + " because it does not return an object."
                    + " Returning primitives or void is not"
                    + " allowed.");
          }

          customReferenceMethod.setMethodType(MethodType.CUSTOM_REFERENCE);

          result.addMethod(customReferenceMethod);
        } //
        // TODO: at the moment method id is always 0 and will only be
        //      set from corresponding method representations
        //
        //      is it necessary to change that?
        else if (modifierString.contains("public")
            && (methodInfo == null || !methodInfo.ignore())) {
          result.addMethod(
              new MethodDescription(
                  objID,
                  0,
                  methodString,
                  methodTitle,
                  null,
                  parameterTypes,
                  parameterNames,
                  parameterAnnotations,
                  parameterGroupAnnotations,
                  returnType,
                  returnValueName,
                  interactive,
                  methodInfo,
                  outputInfo));
        }
      } // end for i

      // Object name
      if (objectInfo != null && !objectInfo.name().equals("")) {
        result.setName(objectInfo.name());
      }
    } // end else if (o instanceof ProxyObject)

    if (!hasCustomReferenceMethod) {
      result.addMethod(MethodDescription.createReferenceMethod(objID, o.getClass()));
    }

    return result;
  }
コード例 #3
0
ファイル: ObjectInspector.java プロジェクト: cpoliwoda/VRL
  /**
   * Invokes the method specified by a method description.
   *
   * @param methodDescription the method description of the method that is to be invoked.
   */
  protected void invoke(MethodDescription methodDescription) throws InvocationTargetException {

    VParamUtil.throwIfNull(methodDescription);

    Object o = getObject(methodDescription.getObjectID());

    ObjectDescription oDesc = getObjectDescription(o);

    if (o == null) {
      throw new IllegalStateException("Object must not be null!");
    }

    if (methodDescription.getMethodType() == MethodType.REFERENCE) {

      Object[] parameters = methodDescription.getParameters();

      // error handling
      if (parameters.length > 1) {
        throw new IllegalArgumentException(
            "More than one parameter " + "for reference methods is not allowed!");
      }

      if (parameters.length > 0 && parameters[0] != null) {
        methodDescription.setReturnValue(parameters[0]);
      } else {
        methodDescription.setReturnValue(o);
      }

    } else if (o instanceof ProxyObject) {
      ProxyObject proxy = (ProxyObject) o;
      methodDescription.setReturnValue(proxy.invoke(methodDescription));
      if (!methodDescription
          .getReturnType()
          .equals(methodDescription.getReturnValue().getClass())) {
        System.err.println(">> ProxyObject: wrong type of return value!");
        generateErrorMessage(">> ProxyObject:" + " wrong type of return value!", methodDescription);
      }
    } else if (methodDescription.getMethodType() == MethodType.DEFAULT
        || methodDescription.getMethodType() == MethodType.CUSTOM_REFERENCE) {
      Method m = null;

      try {
        m =
            o.getClass()
                .getMethod(
                    methodDescription.getMethodName(), methodDescription.getParameterTypes());

        // access this method even if language visibility forbids
        // invocation of this method
        m.setAccessible(true);

        methodDescription.setReturnValue(m.invoke(o, methodDescription.getParameters()));

      } catch (NoSuchMethodException ex) {
        Logger.getLogger(ObjectInspector.class.getName()).log(Level.SEVERE, null, ex);
        generateErrorMessage(
            methodDescription.getMethodName() + "(): " + ex.toString(), methodDescription);
      } catch (IllegalAccessException ex) {
        Logger.getLogger(ObjectInspector.class.getName()).log(Level.SEVERE, null, ex);
        generateErrorMessage(
            methodDescription.getMethodName() + "(): " + ex.toString(), methodDescription);
      } catch (IllegalArgumentException ex) {
        System.err.println(">> ObjectInspector:" + " invoked method with wrong arguments!");

        String yourParamStr = "";
        String expectedParamStr = "";

        if (methodDescription.getParameters() != null) {

          for (int i = 0; i < methodDescription.getParameters().length; i++) {
            Object parameter = methodDescription.getParameters()[i];
            if (parameter != null) {
              yourParamStr += parameter.getClass().getName() + " ";
            } else {
              yourParamStr += "null ";
            }
          }
        } else {
          yourParamStr = "no parameters given!";
        }

        for (int i = 0; i < m.getParameterTypes().length; i++) {
          expectedParamStr += m.getParameterTypes()[i].getName() + " ";
        }

        System.err.println("   your parameters:     " + yourParamStr);
        System.err.println("   expected parameters: " + expectedParamStr);

        generateErrorMessage(
            methodDescription.getMethodName() + "(): method invoked with wrong arguments!",
            methodDescription);

      } catch (InvocationTargetException ex) {
        Logger.getLogger(ObjectInspector.class.getName()).log(Level.SEVERE, null, ex);
        generateErrorMessage(methodDescription, ex.getCause());
        throw ex;

      } catch (SecurityException ex) {
        Logger.getLogger(ObjectInspector.class.getName()).log(Level.SEVERE, null, ex);
        generateErrorMessage(
            methodDescription.getMethodName() + "(): " + ex.toString(), methodDescription);
      }
    } // end else if (o instanceof ProxyObject)
  }
コード例 #4
0
ファイル: Distributor.java プロジェクト: superyfwy/db4o
 public <R> T async(final Callback<R> callback) {
   return rootClient.async(callback);
 }
コード例 #5
0
ファイル: Distributor.java プロジェクト: superyfwy/db4o
 public T async() {
   return rootClient.async();
 }
コード例 #6
0
ファイル: Distributor.java プロジェクト: superyfwy/db4o
 public T sync() {
   return rootClient.sync();
 }