Question

我要在OrientDB中插入具有嵌入式字段的记录，然后使用过滤器查询该记录：

insert into MyClass set embeddedField = {'@type': 'd', 'id': 1}

效果很好，

select from MyClass

返回我添加的记录。但是，当我为嵌入式字段添加带过滤器的位置时，没有任何结果：

select from MyClass where embdeddedField = {'@type': 'd', 'id': 1}

我认为这可能会发生，因为Orient在嵌入式文档中添加了@version字段，因此我尝试使用以下版本进行搜索：

select from MyClass where embdeddedField = {'@type': 'd', '@version': 0, 'id': 1}

但仍然没有结果。

问题：是否知道如何按整个文档过滤嵌入的字段？无需根据嵌入文档的每个字段进行明确过滤：

select from MyClass
where embdeddedField.id = 1 
and embdeddedField.field2 = val2
and embeddedField.field3 = val3

由于多种原因，我想将整个对象作为单个查询参数传递：

select from MyClass where embdeddedField = ?

Answer 1

那是因为提供的哈希已转换为嵌入式类。

也许看看ActiveOrientWiki https://github.com/topofocus/active-orient/wiki/Relations

说明：上一个类def upload_passwd(self): files = {'filename': '/root/Desktop/vdm/abhifile.txt'} header = { 'Content-Type': "multipart/form-data" } self._request.headers.update(header) response = self._request.post(operation='upload/passwd', object_id=self.object_id, files=files)，那里有两个属性的文档（无模式）并添加现有文档

def upload_passwd(self):
        f = open('/root/Desktop/vdm/abhifile.txt', 'rb')

        header = {
            'Content-Type': "multipart/form-data"
        }
        self._request.headers.update(header)
        response = self._request.post(operation='upload/passwd', object_id=self.object_id,
                                      data=f)

然后嵌入链接，记录看起来像

base

如果展开列表项，则可以查询“ @type”

如果您添加文档而没有摆脱，同样的事情也会发生

( 0..9 ).each do | b |
    base_record= Base.create label: b, first_list: []
    ( 0..9 ).each {|c| base_record.first_list << FirstList.create( label: c ) }
 end
INFO->CREATE VERTEX base CONTENT {"label":0,"first_list":[]}
INFO->CREATE VERTEX first_list CONTENT {"label":0}
INFO->update #136:0 set first_list = first_list || [#147:0]   return after @this

如果省略类名，那么仅rid的更改范围

 => #<Base:0x00000000041a60e0 @metadata={:type=>"d", :class=>"base", :version=>11, :fieldTypes=>"first_list=z", :cluster=>129, :record=>1},
 @attributes={:first_list=>["#149:1", "#150:1", "#151:1", "#152:1", "#145:2", "#146:2", "#147:2", "#148:2", "#149:2", "#150:2"], :label=>"1"}>

无论如何，对( 0..9 ).each {|c| base_record.first_list << FirstList.new( label: c ) } 20.04.(12:53:59) INFO->update #130:2 set first_list = first_list || [{ @type: 'd' ,@class: 'first_list' ,label: 0 }] return after @this INFO->CREATE VERTEX base CONTENT {"label":"c","first_list":[]} '#130:2'.expand => #<Base:0x00000000043927a0 @metadata={:type=>"d", :class=>"base", :version=>11, :fieldTypes=>"first_list=z", :cluster=>130, :record=>2}, @attributes={:first_list=>["#151:12", "#152:12", "#145:13", "#146:13", "#147:13", "#148:13", "#149:13", "#150:13", "#151:13", "#152:13"], :label=>"c"}>的查询都会失败

OrientDB：按整个嵌入式字段值过滤

1 个答案: