xml – XSLT：合并具有不同结构和时间表示的两个日志文件

正如Dimitre Novatchev所问,我创建了一个新问题,因为旧问题的某些部分发生了变化.

(链接到旧问题：Merging two different XML log files (trace and messages) using date and timestamp?)

我需要合并两个XML日志文件(最多700MB).一个日志文件包含具有位置更新的跟踪.另一个日志文件包含收到的消息.可以存在多个接收到的消息而不在其间进行位置更新,反之亦然.

这两个日志都有时间戳,包括毫秒(本例中为123)：

>跟踪日志使用< date> (例如,14.7.2012 11：08：07.123)
>消息日志使用unix时间戳< timeStamp> (例如,1342264087123)

还有其他< timeStamp>消息日志中包含的元素,但只有路径messageList / Message / originator / originatorPosition / timeStamp中的元素是相关的.

以下结构略微简化,因为省略了诸如“加速”等附加内容.此附加内容只需与其他消息/项目一起复制.

位置轨迹的结构如下所示：

<itemList>
    <item>
        <date>14.7.2012 12:13:05.123</date>
        <FilteredPosition>
            <Latitude>51.12235</Latitude>
            <Longitude>9.347214</Longitude>
        </FilteredPosition>
    </item>
    <item>
        <date>14.7.2012 12:13:07.456</date>
        <FilteredPosition>
            <Latitude>51.12235</Latitude>
            <Longitude>9.347214</Longitude>
        </FilteredPosition>
    </item>
</itemList>

消息日志的结构如下：

<messageList>
    <Message>
        <messageId>1234</messageId>
        <originator>
            <originatorPosition>
                <nodeId>2345</nodeId>
                <timeStamp>1342264087061</timeStamp>
            </originatorPosition>
            <senderPosition>
                <nodeId>2345</nodeId>
                <timeStamp>1342264087234</timeStamp>
            </senderPosition>
            <medium></medium>
        </originator>
        <MessagePayload>
           <generationTime>
              <timeStamp>1342264087</timeStamp>
              <milliSec>42</milliSec>
           </generationTime>
        </MessagePayload>
    </Message>
    <Message>
        <messageId>1234</messageId>
        <originator>
            <originatorPosition>
                <nodeId>2345</nodeId>
                <timeStamp>1342264088064</timeStamp>
            </originatorPosition>
            <senderPosition>
                <nodeId>2345</nodeId>
                <timeStamp>1342264088254</timeStamp>
            </senderPosition>
            <medium></medium>
        </originator>
        <MessagePayload>
           <generationTime>
              <timeStamp>1342264088</timeStamp>
              <milliSec>42</milliSec>
           </generationTime>
        </MessagePayload>
    </Message>
</messageList>

在进行合并时,应该读取时间戳(还要转换/比较“date”和“timestamp”,包括格式为“14.7.2012 11：08：07.123”的毫秒)以及以正确顺序添加的所有位置和消息.

位置数据可以按原样添加.但是,邮件应放在< item>内.标签,< date>应添加标签(基于消息’unix time with milliseconds)和< Message>标签应替换为< m：消息类型=“收到”>标签.这些项目放在根< itemList>内,就像位置跟踪一样.

结果可能如下所示：

<itemList>
    <item>
        <date>14.7.2012 12:13:05.123</date>
        <FilteredPosition>
            <Latitude>51.12235</Latitude>
            <Longitude>9.347214</Longitude>
        </FilteredPosition>
    </item>
    <item>
        <date>14.7.2012 12:13:07.061</date>
        <m:Message type="received">
            <messageId>1234</messageId>
            <originator>
                <originatorPosition>
                    <nodeId>2345</nodeId>
                    <timeStamp>1342264087061</timeStamp>
                </originatorPosition>
                <senderPosition>
                    <nodeId>2345</nodeId>
                    <timeStamp>1342264087234</timeStamp>
                </senderPosition>
                <medium></medium>
            </originator>
            <MessagePayload>
               <generationTime>
                  <timeStamp>1342264087</timeStamp>
                  <milliSec>63</milliSec>
               </generationTime>
            </MessagePayload>
        </m:Message>
    </item>
    <item>
        <date>14.7.2012 12:13:07.456</date>
        <FilteredPosition>
            <Latitude>51.12235</Latitude>
            <Longitude>9.347214</Longitude>
        </FilteredPosition>
    </item>
    <item>
        <date>14.7.2012 12:13:08.064</date>
        <m:Message type="received">
            <messageId>1234</messageId>
            <originator>
                <originatorPosition>
                    <nodeId>2345</nodeId>
                    <timeStamp>1342264088064</timeStamp>
                </originatorPosition>
                <senderPosition>
                    <nodeId>2345</nodeId>
                    <timeStamp>1342264088254</timeStamp>
                </senderPosition>
                <medium></medium>
            </originator>
            <MessagePayload>
               <generationTime>
                  <timeStamp>1342264088</timeStamp>
                  <milliSec>70</milliSec>
               </generationTime>
            </MessagePayload>
        </m:Message>
    </item>
<itemList>

还有一些< item>位置日志文件中不包含时间戳(并且没有“FilteredPosition”)的元素.这些项目可以忽略,不需要复制.

我很感激XSLT代码的任何帮助,因为我对这个主题很新…： – /

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    xmlns:m="http://www.example.com/"
    exclude-result-prefixes="xs"
    version="2.0">

    <xsl:output indent="yes" method="xml"/>

    <!-- The two source-documents. -->
    <xsl:variable name="doc1" select="doc('log1.xml')"/>
    <xsl:variable name="doc2" select="doc('log2.xml')"/>

    <!-- Timezone adjustment -->
    <xsl:variable name="timezoneAdjustment" select="1"/>

    <!-- Root template to start the transformation. -->
    <xsl:template match="/">
        <!-- Transform and collect all the elements -->
        <xsl:variable name="data" as="node()*">
            <xsl:apply-templates select="$doc1/itemList/item"/>
            <xsl:apply-templates select="$doc2/messageList/Message"/>
        </xsl:variable>
        <!-- Sort by the timestamp,and discard the wrapper. -->
        <itemList>
            <xsl:for-each select="$data">
                <xsl:sort select="@timestamp" data-type="number"/>
                <xsl:copy-of select="item"/>
            </xsl:for-each>
        </itemList>
    </xsl:template>

    <!--
        Template to transform <item> elements in the first format.
        It just parses the date,and adds a wrapper with the timestamp.
    -->
    <xsl:template match="item[date]">
        <xsl:variable name="dateTimeString" select="date" as="xs:string"/>
        <xsl:variable name="datePart" select="substring-before($dateTimeString,' ')"/>
        <xsl:variable name="day" select="xs:integer(substring-before($datePart,'.'))"/>
        <xsl:variable name="month" select="xs:integer(substring-before(substring-after($datePart,'.'),'.'))"/>
        <xsl:variable name="year" select="xs:integer(substring-after(substring-after($datePart,'.'))"/>
        <xsl:variable name="timePart" select="substring-after($dateTimeString,' ')"/>
        <xsl:variable name="reformatted" select="concat(format-number($year,'0000'),'-',format-number($month,'00'),format-number($day,'T',$timePart)"/>
        <xsl:variable name="timestamp" select="( xs:dateTime($reformatted) - xs:dateTime('1970-01-01T00:00:00') - $timezoneAdjustment * xs:dayTimeDuration('PT1H') ) div xs:dayTimeDuration('PT0.001S')"/>
        <wrapper timestamp="{$timestamp}">
            <xsl:copy-of select="self::*"/>
        </wrapper>
    </xsl:template>

    <!--
        Template to transform <Message> elements in the second log format.
        It generates an item with the date,and wraps it with the timestamp.
    -->
    <xsl:template match="Message[originator/originatorPosition/timeStamp]">
        <xsl:variable name="timestamp" select="originator/originatorPosition/timeStamp" as="xs:integer"/>
        <xsl:variable name="date" select="xs:dateTime('1970-01-01T00:00:00') + $timezoneAdjustment * xs:dayTimeDuration('PT1H') + $timestamp * xs:dayTimeDuration('PT0.001S')"/>
        <wrapper timestamp="{$timestamp}">
            <item>
                <date>
                    <xsl:value-of select="format-dateTime($date,'[D01].[M01].[Y0001] [H01]:[m01]:[s01].[f001]')"/>
                </date>
                <m:Message type="recieved">
                    <xsl:copy-of select="*"/>
                </m:Message>
            </item>
        </wrapper>
    </xsl:template>

</xsl:stylesheet>

编辑：我添加了一个变量用于消息的时区调整.

编辑：修复了属性名称,因此项目将正确排序.

xml – XSLT：合并具有不同结构和时间表示的两个日志文件

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