红宝石嵌套散列 - 确定单独的事件

Question

我有很多独特的XML事件，我已经转换成大约300个密钥的哈希。这些键中大多数的值都是哈希值，再次，其中一些键的值是哈希值。我不知道散列嵌套会走多深。

我想写一个无模式数据库的原始300的每个哈希值及其所有关键字&值（无论它有多少）。

我已经设法编写一个（messy）方法来输出每个Hash的值，而不管它的值可能包含多少个Hashes。

我现在面临的问题是我无法确定一个哈希开始的位置，而一个哈希结束。因此，我无法将单独的事件写入数据库，因为我只剩下所有Hashes的输出。

如何确定哪些是单独的事件？

这里是我的代码：

require 'crack' 
require 'awesome_print' 

def printingOutHash(inputHash) 
#ap inputHash 
    if inputHash.kind_of?(Array) 
    puts "array" 
    inputHash.each do |x| 
     printingOutHash(x) 
    end 
    end 

    if inputHash.kind_of?(Hash) 
    inputHash.each do |k, v| 
     if v.kind_of?(Hash) 
     printingOutHash(v) 
     else 
     ap "#{k}: #{v}" 
     end 
    end 
    end 
end 

    h = Crack::XML.parse("<Events><Event><System><Provider Name='Service Control Manager' Guid='{555908d1-a6d7-4695-8e1e-26931d2012f4}' EventSourceName='Service Control Manager'/><EventID Qualifiers='16384'>7036</EventID><Version>0</Version><Level>4</Level><Task>0</Task><Opcode>0</Opcode><Keywords>0x8080000000000000</Keywords><TimeCreated SystemTime='2013-03-25T05:00:38.021800000Z'/><EventRecordID>17629</EventRecordID><Correlation/><Execution ProcessID='476' ThreadID='3028'/><Channel>System</Channel><Computer>AMAZONA-ONIST5V</Computer><Security/></System><EventData><Data Name='param1'>Windows Modules Installer</Data><Data Name='param2'>stopped</Data><Binary>540072007500730074006500640049006E007300740061006C006C00650072002F0031000000</Binary></EventData></Event><Event><System><Provider Name='Service Control Manager' Guid='{555908d1-a6d7-4695-8e1e-26931d2012f4}' EventSourceName='Service Control Manager'/><EventID Qualifiers='16384'>7040</EventID><Version>0</Version><Level>4</Level><Task>0</Task><Opcode>0</Opcode><Keywords>0x8080000000000000</Keywords><TimeCreated SystemTime='2013-03-25T05:00:37.741000000Z'/><EventRecordID>17628</EventRecordID><Correlation/><Execution ProcessID='476' ThreadID='3028'/><Channel>System</Channel><Computer>AMAZONA-ONIST5V</Computer><Security UserID='S-1-5-18'/></System><EventData><Data Name='param1'>Windows Modules Installer</Data><Data Name='param2'>auto start</Data><Data Name='param3'>demand start</Data><Data Name='param4'>TrustedInstaller</Data></EventData></Event></Events>") 

printingOutHash(h['Events']['Event']) 

Answer 1

转换XML到散列是不是当你与复杂或大型数据文件处理，因为走的哈希不是比较搜索非常方便的一个好主意XML。使用合适的工具（如Nokogiri）解析XML非常简单。

立足关你的XML：

require 'nokogiri' 

xml = " 
<Events> 
    <Event> 
     <System> 
      <Provider Name='Service Control Manager' Guid='{555908d1-a6d7-4695-8e1e-26931d2012f4}' EventSourceName='Service Control Manager'/> 
      <EventID Qualifiers='16384'>7036</EventID> 
      <Version>0</Version> 
      <Level>4</Level> 
      <Task>0</Task> 
      <Opcode>0</Opcode> 
      <Keywords>0x8080000000000000</Keywords> 
      <TimeCreated SystemTime='2013-03-25T05:00:38.021800000Z'/> 
      <EventRecordID>17629</EventRecordID> 
      <Correlation/> 
      <Execution ProcessID='476' ThreadID='3028'/> 
      <Channel>System</Channel> 
      <Computer>AMAZONA-ONIST5V</Computer> 
      <Security/> 
     </System> 
     <EventData> 
      <Data Name='param1'>Windows Modules Installer</Data> 
      <Data Name='param2'>stopped</Data> 
      <Binary>540072007500730074006500640049006E007300740061006C006C00650072002F0031000000</Binary> 
     </EventData> 
    </Event> 
    <Event> 
     <System> 
      <Provider Name='Service Control Manager' Guid='{555908d1-a6d7-4695-8e1e-26931d2012f4}' EventSourceName='Service Control Manager'/> 
      <EventID Qualifiers='16384'>7040</EventID> 
      <Version>0</Version> 
      <Level>4</Level> 
      <Task>0</Task> 
      <Opcode>0</Opcode> 
      <Keywords>0x8080000000000000</Keywords> 
      <TimeCreated SystemTime='2013-03-25T05:00:37.741000000Z'/> 
      <EventRecordID>17628</EventRecordID> 
      <Correlation/> 
      <Execution ProcessID='476' ThreadID='3028'/> 
      <Channel>System</Channel> 
      <Computer>AMAZONA-ONIST5V</Computer> 
      <Security UserID='S-1-5-18'/> 
     </System> 
     <EventData> 
      <Data Name='param1'>Windows Modules Installer</Data> 
      <Data Name='param2'>auto start</Data> 
      <Data Name='param3'>demand start</Data> 
      <Data Name='param4'>TrustedInstaller</Data> 
     </EventData> 
    </Event> 
</Events>" 

下面是我怎么会把自己的数据开始：

doc = Nokogiri::XML(xml) 
pp doc.search('Event').map { |event| 

    system_provider_node = event.at('System Provider') 

    system = { 
    provider: { 
     name: system_provider_node['Name'], 
     guid: system_provider_node['Guid'], 
     event_source_name: system_provider_node['EventSourceName'] 
    } 
    } 

    event_data = event.search('EventData Data').map{ |data| 
    { 
     name: data['Name'], 
     text: data.text 
    } 
    } 

    { 
    system: system, 
    event_data: event_data 
    }  

} 

导致：

[{:system=> 
    {:provider=> 
    {:name=>"Service Control Manager", 
     :guid=>"{555908d1-a6d7-4695-8e1e-26931d2012f4}", 
     :event_source_name=>"Service Control Manager"}}, 
    :event_data=> 
    [{:name=>"param1", :text=>"Windows Modules Installer"}, 
    {:name=>"param2", :text=>"stopped"}]}, 
{:system=> 
    {:provider=> 
    {:name=>"Service Control Manager", 
     :guid=>"{555908d1-a6d7-4695-8e1e-26931d2012f4}", 
     :event_source_name=>"Service Control Manager"}}, 
    :event_data=> 
    [{:name=>"param1", :text=>"Windows Modules Installer"}, 
    {:name=>"param2", :text=>"auto start"}, 
    {:name=>"param3", :text=>"demand start"}, 
    {:name=>"param4", :text=>"TrustedInstaller"}]}] 

你不必须建立一组哈希值。对于每个<Event>，您都可以剥离这些元素并在数据库中的各个表中构建单独的行。这真的取决于你的想法。