Package org.springframework.expression

Examples of org.springframework.expression.AccessException

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        arguments = ReflectionHelper.setupArgumentsForVarargsInvocation(this.method.getParameterTypes(), arguments);
      }
      ReflectionUtils.makeAccessible(this.method);
      return new TypedValue(this.method.invoke(target, arguments), new TypeDescriptor(new MethodParameter(method,-1)));
    } catch (Exception ex) {
      throw new AccessException("Problem invoking method: " + this.method, ex);
    }
  }
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    return false;
  }

  public TypedValue read(EvaluationContext context, Object target, String name) throws AccessException {
    if (target == null) {
      throw new AccessException("Cannot read property of null target");
    }
    Class<?> type = (target instanceof Class ? (Class<?>) target : target.getClass());

    if (type.isArray() && name.equals("length")) {
      if (target instanceof Class) {
        throw new AccessException("Cannot access length on array class itself");
      }
      return new TypedValue(Array.getLength(target),TypeDescriptor.valueOf(Integer.TYPE));
    }

    if (this.readerCache==null) {
      this.readerCache = new ConcurrentHashMap<CacheKey, InvokerPair>();
    }
    CacheKey cacheKey = new CacheKey(type, name);
    InvokerPair invoker = this.readerCache.get(cacheKey);

    if (invoker == null || invoker.member instanceof Method) {
      Method method = (Method) (invoker==null?null:invoker.member);
      if (method == null) {
        method = findGetterForProperty(name, type, target instanceof Class);
        if (method != null) {
          invoker = new InvokerPair(method,new TypeDescriptor(new MethodParameter(method,-1)));
          this.readerCache.put(cacheKey, invoker);
        }
      }
      if (method != null) {
        try {
          ReflectionUtils.makeAccessible(method);
          return new TypedValue(method.invoke(target),invoker.typeDescriptor);
        }
        catch (Exception ex) {
          throw new AccessException("Unable to access property '" + name + "' through getter", ex);
        }
      }
    }

    if (invoker == null || invoker.member instanceof Field) {
      Field field = (Field) (invoker==null?null:invoker.member);
      if (field == null) {
        field = findField(name, type, target instanceof Class);
        if (field != null) {
          invoker = new InvokerPair(field, new TypeDescriptor(field));
          this.readerCache.put(cacheKey, invoker);
        }
      }
      if (field != null) {
        try {
          ReflectionUtils.makeAccessible(field);
          return new TypedValue(field.get(target),invoker.typeDescriptor);
        }
        catch (Exception ex) {
          throw new AccessException("Unable to access field: " + name, ex);
        }
      }
    }

    throw new AccessException("Neither getter nor field found for property '" + name + "'");
  }
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    return false;
  }

  public void write(EvaluationContext context, Object target, String name, Object newValue) throws AccessException {
    if (target == null) {
      throw new AccessException("Cannot write property on null target");
    }
    Class<?> type = (target instanceof Class ? (Class<?>) target : target.getClass());

    Object possiblyConvertedNewValue = newValue;
    TypeDescriptor typeDescriptor = getTypeDescriptor(context, target, name);
    if (typeDescriptor != null) {
      try {
        possiblyConvertedNewValue = context.getTypeConverter().convertValue(newValue, typeDescriptor);
      } catch (EvaluationException evaluationException) {
        throw new AccessException("Type conversion failure",evaluationException);
      }
    }
    if (this.writerCache == null) {
      this.writerCache = new ConcurrentHashMap<CacheKey, Member>();
    }
    CacheKey cacheKey = new CacheKey(type, name);
    Member cachedMember = this.writerCache.get(cacheKey);

    if (cachedMember == null || cachedMember instanceof Method) {
      Method method = (Method) cachedMember;
      if (method == null) {
        method = findSetterForProperty(name, type, target instanceof Class);
        if (method != null) {
          cachedMember = method;
          this.writerCache.put(cacheKey, cachedMember);
        }
      }
      if (method != null) {
        try {
          ReflectionUtils.makeAccessible(method);
          method.invoke(target, possiblyConvertedNewValue);
          return;
        }
        catch (Exception ex) {
          throw new AccessException("Unable to access property '" + name + "' through setter", ex);
        }
      }
    }

    if (cachedMember == null || cachedMember instanceof Field) {
      Field field = (Field) cachedMember;
      if (field == null) {
        field = findField(name, type, target instanceof Class);
        if (field != null) {
          cachedMember = field;
          this.writerCache.put(cacheKey, cachedMember);
        }
      }
      if (field != null) {
        try {
          ReflectionUtils.makeAccessible(field);
          field.set(target, possiblyConvertedNewValue);
          return;
        }
        catch (Exception ex) {
          throw new AccessException("Unable to access field: " + name, ex);
        }
      }
    }

    throw new AccessException("Neither setter nor field found for property '" + name + "'");
  }
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          if (needsToBeMadeAccessible) {
            ReflectionUtils.makeAccessible((Method)member);
          }
          return new TypedValue(((Method)member).invoke(target),typeDescriptor);
        } catch (Exception e) {
          throw new AccessException("Unable to access property '" + name + "' through getter", e);
        }
      }   
      if (member instanceof Field) {
        try {
          if (needsToBeMadeAccessible) {
            ReflectionUtils.makeAccessible((Field)member);
          }
          return new TypedValue(((Field)member).get(target),typeDescriptor);
        }
        catch (Exception ex) {
          throw new AccessException("Unable to access field: " + name, ex);
        }
      }
      throw new AccessException("Neither getter nor field found for property '" + name + "'");
    }
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      ReflectionUtils.makeAccessible(this.ctor);
      return new TypedValue(this.ctor.newInstance(arguments),
          TypeDescriptor.valueOf(this.ctor.getClass()));
    }
    catch (Exception ex) {
      throw new AccessException("Problem invoking constructor: " + this.ctor, ex);
    }
  }
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      else {
        return null;
      }
    }
    catch (EvaluationException ex) {
      throw new AccessException("Failed to resolve method", ex);
    }
  }
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      } else {
        return null;
      }
    }
    catch (EvaluationException ex) {
      throw new AccessException("Failed to resolve constructor", ex);
    }
  }
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  public boolean canWrite(EvaluationContext context, Object target, String name) throws AccessException {
    return false;
  }

  public void write(EvaluationContext context, Object target, String name, Object newValue) throws AccessException {
    throw new AccessException("The flow MessageSource is not writable.");
  }
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  public boolean canWrite(EvaluationContext context, Object target, String name) throws AccessException {
    return false;
  }

  public void write(EvaluationContext context, Object target, String name, Object newValue) throws AccessException {
    throw new AccessException("The Action cannot be set with an expression.");
  }
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  public boolean canWrite(EvaluationContext context, Object target, String name) throws AccessException {
    return false;
  }

  public void write(EvaluationContext context, Object target, String name, Object newValue) throws AccessException {
    throw new AccessException("Beans in a BeanFactory are read-only");
  }
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