小毛驴（xml）试乘记（二）：pl/sql方法

Oracle支持xml。可以用pl/sql加工xml数据。

下面的例子对xml加工后将其用dbms_output输出。

同理，也可将结果Insert到表里去。

declare
x xmltype := xmltype('<?xml version="1.0"?>
<config> <!--在config和rules之间有许多数据，这里简化-->
 <devices>
  <entry>
    <vsys>
	 <entry>
	  <rulebase>
       <security>
        <rules> <!--rules之下的entry有上百条，这里简化，只留1条数据-->
	      <entry name="GlobalProtect">
		   <from>
			<member>untrust-1</member>
			<member>untrust-2</member>
		   </from>
		   <to>
			<member>dmz1</member>
			<member>dmz2</member>
		   </to>
		   <source>
			<member>any</member>
		   </source>
		   <destination>
			<member>DC01_FW01_eth11</member>
		   </destination>
		   <source-user>
			<member>any</member>
		   </source-user>
		   <category>
			<member>any</member>
		   </category>
		   <application>
			<member>any</member>
		   </application>
		   <service>
			<member>service_https</member>
			<member>TCP_80</member>
		   </service>
		   <hip-profiles>
			<member>any</member>
		   </hip-profiles>
		   <action>test</action>
		   <log-setting>traffic_log</log-setting>
	    </entry>
       </rules>
      </security>
	 </rulebase>
	</entry>
   </vsys>
  </entry>
 </devices>
</config>
');

begin
for r in
(SELECT X.*
　FROM　XMLTABLE (
  -- 取得entry之下的from/to等Node的值，因为member可能有一个以上，要用for
  'for $e in $d/config/devices/entry/vsys/entry/rulebase/security/rules/entry
   return <e>
              --取得entry的Attribute，name
              <entry>{fn:string($e/@name)}</entry>
               --用函数(fn:string-join)把多个值连接起来，分隔符用;
               <from>{fn:string-join($e/from/member,";")}</from>
                 <to>{fn:string-join($e/to/member,";")}</to>
             <source>{fn:string-join($e/source/member,";")}</source>
        <destination>{fn:string-join($e/destination/member,";")}</destination>
        <source-user>{fn:string-join($e/source-user/member,";")}</source-user>
           <category>{fn:string-join($e/category/member,";")}</category>
        <application>{fn:string-join($e/application/member,";")}</application>
            <service>{fn:string-join($e/service/member,";")}</service>
       <hip-profiles>{fn:string-join($e/hip-profiles/member,";")}</hip-profiles>
                     {$e/action}  -- action只有一个值，不用函数
                     {$e/log-setting}
　 </e>'
passing x as "d"
COLUMNS        s_entry PATH 'entry',s_from PATH 'from',s_to PATH 'to',s_source PATH 'source',s_destination PATH 'destination',s_source_user PATH 'source-user',s_category PATH 'category',s_application PATH 'application',s_service PATH 'service',s_hip_profiles PATH 'hip-profiles',s_action PATH 'action',s_log_setting PATH 'log-setting'
) AS X ) loop


dbms_output.put_line(
	       r.s_entry
	||','||r.s_from
	||','||r.s_to
	||','||r.s_source
	||','||r.s_destination
	||','||r.s_source_user
	||','||r.s_category
	||','||r.s_application
	||','||r.s_service
	||','||r.s_hip_profiles
	||','||r.s_action
	||','||r.s_log_setting

);

end loop;
end;

GlobalProtect,untrust-1;untrust-2,dmz1;dmz2,any,DC01_FW01_eth11,service_https;TCP_80,test,traffic_log

注意： 红字部分，“；”是有多个值的Node内部的分隔符，而“，”是各Node之间的分隔符。

（编辑：李大同）

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