Examples of org.apache.commons.beanutils.LazyDynaBean

org.apache.commons.beanutils.LazyDynaBean
DynaBean which automatically adds properties to the DynaClass and provides Lazy List and Lazy Map features.

DynaBeans deal with three types of properties - simple, indexed and mapped and have the following get() and set() methods for each of these types:
- Simple property methods - get(name) and set(name, value)
- Indexed property methods - get(name, index) and set(name, index, value)
- Mapped property methods - get(name, key) and set(name, key, value)
Getting Property Values

Calling any of the get() methods, for a property which doesn't exist, returns null in this implementation.

Setting Simple Properties

The LazyDynaBean will automatically add a property to the DynaClass if it doesn't exist when the set(name, value) method is called.
DynaBean myBean = new LazyDynaBean();
myBean.set("myProperty", "myValue");

Setting Indexed Properties

If the property doesn't exist, the LazyDynaBean will automatically add a property with an ArrayList type to the DynaClass when the set(name, index, value) method is called. It will also instantiate a new ArrayList and automatically grow the List so that it is big enough to accomodate the index being set. ArrayList is the default indexed property that LazyDynaBean uses but this can be easily changed by overriding the defaultIndexedProperty(name) method.
DynaBean myBean = new LazyDynaBean();
myBean.set("myIndexedProperty", 0, "myValue1");
myBean.set("myIndexedProperty", 1, "myValue2");

If the indexed property does exist in the DynaClass but is set to null in the LazyDynaBean, then it will instantiate a new List or Array as specified by the property's type in the DynaClass and automatically grow the List or Array so that it is big enough to accomodate the index being set.
DynaBean myBean = new LazyDynaBean();
MutableDynaClass myClass = (MutableDynaClass)myBean.getDynaClass();
myClass.add("myIndexedProperty", int[].class);
myBean.set("myIndexedProperty", 0, new Integer(10));
myBean.set("myIndexedProperty", 1, new Integer(20));

Setting Mapped Properties

If the property doesn't exist, the LazyDynaBean will automatically add a property with a HashMap type to the DynaClass and instantiate a new HashMap in the DynaBean when the set(name, key, value) method is called. HashMap is the default mapped property that LazyDynaBean uses but this can be easily changed by overriding the defaultMappedProperty(name) method.
DynaBean myBean = new LazyDynaBean();
myBean.set("myMappedProperty", "myKey", "myValue");

If the mapped property does exist in the DynaClass but is set to null in the LazyDynaBean, then it will instantiate a new Map as specified by the property's type in the DynaClass.
DynaBean myBean = new LazyDynaBean();
MutableDynaClass myClass = (MutableDynaClass)myBean.getDynaClass();
myClass.add("myMappedProperty", TreeMap.class);
myBean.set("myMappedProperty", "myKey", "myValue");

Restricted DynaClass

MutableDynaClass have a facility to restrict the DynaClass so that its properties cannot be modified. If the MutableDynaClass is restricted then calling any of the set() methods for a property which doesn't exist will result in a IllegalArgumentException being thrown.
@see LazyDynaClass @author Niall Pemberton

    // TODO Auto-generated method stub
    OperResult result = new OperResult();


    List<LazyDynaBean>beans = new ArrayList<LazyDynaBean>();
    
    LazyDynaBean userBean = new LazyDynaBean();
    userBean.set("id", "users");
    userBean.set("children", getAllUsers());
    userBean.set("text", "用户");
    userBean.set("type", "user");
    
    LazyDynaBean groupBean = new LazyDynaBean();
    groupBean.set("id", "groups");
    groupBean.set("children", getAllGroups());
    groupBean.set("text", "组");
    groupBean.set("type", "group");
    
    LazyDynaBean roleBean = new LazyDynaBean();
    roleBean.set("id", "roles");
    roleBean.set("children", getAllRoles());
    roleBean.set("text", "角色");
    roleBean.set("type", "role");
    
    LazyDynaBean resourceBean = new LazyDynaBean();
    resourceBean.set("id", "resources");
    resourceBean.set("children", getAllResources());
    resourceBean.set("text", "资源");
    resourceBean.set("type", "resource");
    
    beans.add(userBean);
    beans.add(groupBean);
    beans.add(roleBean);
    beans.add(resourceBean);

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    if(user==null)
    {
      result.setFailed(USER_NOT_EXIST);
      return result;
    }
    LazyDynaBean bean = new LazyDynaBean();
    
    /**
     * 获取用户基本信息
     * */
    UserInfo userInfo = userInfoDAO.findById(userID);
    if(userInfo!=null)
      bean = ObjectListConvert2DynaBeanList.convert(userInfo);
    bean.set("name", user.getName());
    bean.set("enabled", user.getEnabled());
    
    /**
     * 获取用户组信息
     * */
    bean.set("groups", getGroupsOfUser(userID));
    
    /**
     * 获取用户权限信息，包含用户所在组的权限
     * */
    bean.set("authorities", getAuthoritiesOfUser(userID));
    
    result.setSucceed();
    result.setData(bean);
    return result;
  }

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    if(group==null)
    {
      result.setFailed(GROUP_NOT_EXIST);
      return result;
    }
    LazyDynaBean bean = new LazyDynaBean();
    
    /**
     * 获取组基本信息(组名)
     * */
    ObjectListConvert2DynaBeanList.convert(bean, group);
    
    /**
     * 获取组用户，只需要id与name
     * 由于组操作中不需要关联用户（此操作在用户操作中已完成）,故无需signal信息
     * */
    bean.set("users", getUsersOfGroup(groupID));
    
    /**
     * 获取组权限信息
     * */
    bean.set("authorities", getAuthoritiesOfGroup(groupID));
    
    result.setSucceed();
    result.setData(bean);
    return result;
  }

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        {
          @Override
          public LazyDynaBean mapRow(ResultSet rs, int rowNum)
              throws SQLException {
            // TODO Auto-generated method stub
            LazyDynaBean bean = new LazyDynaBean();
            bean.set("path", rs.getString(1));
            bean.set("description", rs.getString(2));
            bean.set("expression", rs.getString(3));
            bean.set("group", rs.getString(4));
            return bean;
          }      
        });
    List<LazyDynaBean>resultBean = new ArrayList<LazyDynaBean>();
    for(LazyDynaBean bean:beans)
    {
      String expression = (String)bean.get("expression");
      if(isRoleInResExpression(authority,expression))
      {
//        expression其实不应该在此暴露给前台
        resultBean.add(bean);
      }

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    OperResult result = new OperResult();
    List<ResourceCategory>categories = resourceCategoryDAO.findAll();
    List<LazyDynaBean>beans = new ArrayList<LazyDynaBean>();
    for(ResourceCategory rc:categories)
    {
      LazyDynaBean bean = ObjectListConvert2DynaBeanList.convert(rc);//具体的某个资源分类
      bean.set("text", rc.getName());
      bean.set("leaf", false);
      
//      获取资源分类所包含的资源，具体的资源要增加一个属性leaf=true;
      List<Resources> tmpResources = new ArrayList<Resources>();
      tmpResources.addAll(rc.getResourceses());
      List<LazyDynaBean>resources = ObjectListConvert2DynaBeanList.convert(tmpResources);
      for(LazyDynaBean resource:resources)
      {
        resource.set("text", resource.get("description"));
        resource.set("leaf", true);
      }
      bean.set("resources", resources);
      
      beans.add(bean);
    }
    result.setSucceed();
    result.setData(beans);

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    List<ResourceCategory>categories = resourceCategoryDAO.findAll();
    List<LazyDynaBean>beans = new ArrayList<LazyDynaBean>();
    for(ResourceCategory rc:categories)
    {
      boolean isLeaf = false;      
      LazyDynaBean bean = ObjectListConvert2DynaBeanList.convert(rc);//具体的某个资源分类
      bean.set("type", "resource");
      bean.set("text", rc.getName());      
      
//      获取资源分类所包含的资源，具体的资源要增加一个属性leaf=true;
      List<Resources> tmpResources = new ArrayList<Resources>();
      tmpResources.addAll(rc.getResourceses());
      Collections.sort(tmpResources, new Comparator<Resources>(){
        @Override
        public int compare(Resources o1, Resources o2)
        {
          // TODO Auto-generated method stub
          String name1 = o1.getDescription();
          String name2 = o2.getDescription();
          if(name1!=null&&name2!=null&&name1.compareTo(name2)>0)
          {
            return 1;
          }
          return 0;
        }
        
      });
      
//      判断目录中是否包含资源；若没有，则其为叶节点
//      if(tmpResources.size()==0)
//        isLeaf = true;
      bean.set("leaf", isLeaf);
      
      List<LazyDynaBean>resources = ObjectListConvert2DynaBeanList.convert(tmpResources);
      for(LazyDynaBean resource:resources)
      {
        resource.set("type", "resource");
        resource.set("text", resource.get("description"));
        resource.set("leaf", true);
      }
      bean.set("children", resources);
      
      beans.add(bean);
    }
    return beans;
  }

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    List<LazyDynaBean> beans = jdbcTemplate.query(sql, new RowMapper<LazyDynaBean>(){
      @Override
      public LazyDynaBean mapRow(ResultSet rs, int rowNum)
          throws SQLException {
        // TODO Auto-generated method stub
        LazyDynaBean bean = new LazyDynaBean();
        bean.set("path", rs.getString(1));
        bean.set("method", rs.getString(2));
        bean.set("expression", rs.getString(3));
        bean.set("status", rs.getBoolean(4));
        return bean;
      }      
    });
    List<String> interceptUrls= new ArrayList<String>();
    for(LazyDynaBean bean:beans)
    {
      Boolean status = (Boolean)bean.get("status");
      if(status!=null&&status.booleanValue()==true)//status没有设置与false等效，此访问控制不生效，直接不去set
      {
        String path = (String)bean.get("path");
        String method = (String)bean.get("method");
        if(method!=null&&!method.equalsIgnoreCase("all"))//后台处理的http方法都是大写的
          method = method.toUpperCase();
        else//当method为null或all时，表示对所有方法进行访问控制，直接设成""
          method="";
        String expression = (String)bean.get("expression");
        if(expression==null||expression.equals(""))//表达式为空，默认denyAll
          expression = "denyAll";
        String url = new StringBuffer().append(method).append(",").append(path)
              .append(",").append(expression).toString();
        interceptUrls.add(url);

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    List<LazyDynaBean>beans = jdbcTemplate.query(sql, new RowMapper<LazyDynaBean>(){
      @Override
      public LazyDynaBean mapRow(ResultSet rs, int rowNum)
          throws SQLException {
        // TODO Auto-generated method stub
        LazyDynaBean bean = new LazyDynaBean();
        bean.set("path", rs.getString(1));
        bean.set("expression", rs.getString(2));
        bean.set("status", rs.getBoolean(3));
        return bean;
      }      
    },UI_RESOURCE_NAME);
    CustomWebSecurityExpressionHandler filterSecurityInterceptor = (CustomWebSecurityExpressionHandler)StorageService.ctx.getBean("customExpressionHandler");
    EvaluationContext ctx = filterSecurityInterceptor.createEvaluationContext(authentication, request);
    List<String>UIs = new ArrayList<String>();
    for(LazyDynaBean bean:beans)
    {
      Boolean status = (Boolean)bean.get("status");
      String path = (String)bean.get("path");
      if(status==null||status.booleanValue()==false)
      {
        //资源无访问控制，或者资源访问控制不生效，这种情况下默认security_base中的策略
        //现在默认是permitAll，允许访问，则返回给ui的path
        UIs.add(path);
      }
      else//资源有访问控，且生效
      {
        String expression = (String)bean.get("expression");        
        if(expression==null||expression.equals(""))//表达式为空，默认为denyAll
          expression="denyAll";
        
        //表达式不为空，则由authentication来判断        
        Expression expr = new SpelExpressionParser().parseExpression(expression);

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    {
      result.setFailed(USER_NOT_EXIST);
      return result;
    }
    Users user = users.get(0);
    LazyDynaBean bean = new LazyDynaBean();
    
    /**
     * 获取用户基本信息
     * */
    String userID = user.getId();
    UserInfo userInfo = userInfoDAO.findById(userID);
    if(userInfo!=null)
      bean = ObjectListConvert2DynaBeanList.convert(userInfo);
    bean.set("name", user.getName());
    bean.set("enabled", user.getEnabled());
    
    /**
     * 获取用户组信息
     * */
    bean.set("groups", getGroupsOfUser(userID));
    
    /**
     * 获取用户权限信息，包含用户所在组的权限
     * */
    bean.set("authorities", getAuthoritiesOfUser(userID));
    
    result.setSucceed();
    result.setData(bean);
    return result;
  }

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      if(metaData==null){
        
      }else{
        int columnCount = metaData.getColumnCount();
        while(rs.next()){
          LazyDynaBean bean = new LazyDynaBean();
          for(int i=0;i<columnCount;i++){
            String columnName = null;
            int columnType = -1;
            try {
              columnName = metaData.getColumnName(i+1);
              columnType = metaData.getColumnType(i+1);
            } catch (SQLException e) {
              e.printStackTrace();
            }
            if(columnName == null){
              columnName = "column"+(i+1);
            }
            bean.set(columnName.toLowerCase(), getResultSetObject(rs,i,columnType));
          }
          result.add(bean);
        }
      }
      return result;

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