在XSLT中按月和年分组XML节点

Question

更新

  

我想向提供答案的人道歉，我似乎引起了各种各样的困惑。为了避免使事情进一步复杂化，我删除了以前的代码并添加了新信息。请继续阅读...

我正在使用Umbraco的自定义博客。 Umbraco将XML作为输出吐出，然后使用XSLT读取。

XML的结构如下

• 博客
  • 博客中心
    • 间
      • 博客文章
      • 博客文章
      • 博客文章
    • 间
      • 博客文章
  • 博客中心
    • 间
      • 博客文章

这是XML代码，我已经清理了很多代码，使其至少有些可读。

<Blog id="1078" parentID="1049" level="2" writerID="0" creatorID="0" nodeType="1073" template="1089" sortOrder="7" createDate="2010-09-27T14:11:04" updateDate="2010-10-12T16:59:12" nodeName="Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078" isDoc="">
    <newPageTitle>The Lorem Ipsum Blog</newPageTitle>
    <BlogCentre id="1079" parentID="1078" level="3" writerID="0" creatorID="0" nodeType="1075" template="1076" sortOrder="1" createDate="2010-09-27T14:11:49" updateDate="2010-10-07T14:43:13" nodeName="Blog Centre 1" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079" isDoc="">
        <Room id="1081" parentID="1079" level="4" writerID="0" creatorID="0" nodeType="1077" template="0" sortOrder="1" createDate="2010-09-27T14:12:26" updateDate="2010-10-07T14:43:06" nodeName="Room 10" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081" isDoc="">
            <BlogPost id="1175" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1192" sortOrder="1" createDate="2010-10-07T14:51:48" updateDate="2010-10-12T21:30:53" nodeName="The first ever Blog post" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1175" isDoc="">
                <topicTitle>The first ever blog</topicTitle>
            </BlogPost>
            <BlogPost id="1180" parentID="1081" level="5" writerID="0" creatorID="3" nodeType="1087" template="1089" sortOrder="2" createDate="2010-10-08T15:52:20" updateDate="2010-10-12T16:57:00" nodeName="asdasd" writerName="Administrator" creatorName="ZX" path="-1,1049,1078,1079,1081,1180" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
            <BlogPost id="1181" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="3" createDate="2010-10-08T17:50:19" updateDate="2010-10-12T11:40:37" nodeName="condimentum" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1181" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-09-01T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1194" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="4" createDate="2010-10-12T11:41:50" updateDate="2010-10-12T11:42:37" nodeName="Nam augue" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1194" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-08-05T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1195" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="5" createDate="2010-10-12T11:42:15" updateDate="2010-10-12T11:42:25" nodeName="consequat nunc" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1195" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-08-12T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1196" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="6" createDate="2010-10-12T12:05:57" updateDate="2010-10-12T12:08:40" nodeName="cursus congue" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1196" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2009-10-22T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1197" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="7" createDate="2010-10-12T12:08:54" updateDate="2010-10-12T12:09:24" nodeName="inceptos" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1197" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2009-11-19T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1198" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="8" createDate="2010-10-12T12:09:45" updateDate="2010-10-12T12:10:13" nodeName="inceptos himenaeos" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1198" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2009-12-16T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1199" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="9" createDate="2010-10-12T12:10:29" updateDate="2010-10-12T12:10:56" nodeName="consequat" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1199" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-01-13T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1200" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="10" createDate="2010-10-12T12:11:08" updateDate="2010-10-12T12:11:35" nodeName="himenaeos" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1200" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-02-09T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1201" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="11" createDate="2010-10-12T12:11:45" updateDate="2010-10-12T12:12:35" nodeName="cursus congue" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1201" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-04-22T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1202" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="12" createDate="2010-10-12T12:12:18" updateDate="2010-10-12T12:12:45" nodeName="pharetra" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1202" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-03-09T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1203" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="13" createDate="2010-10-12T12:13:05" updateDate="2010-10-12T12:13:27" nodeName="inceptos himenaeos" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1203" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-05-26T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1204" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="14" createDate="2010-10-12T12:13:36" updateDate="2010-10-12T12:13:56" nodeName="pharetra" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1204" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-06-11T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1205" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="15" createDate="2010-10-12T12:14:06" updateDate="2010-10-12T12:14:41" nodeName="Fusce augue" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1205" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-07-08T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1206" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="16" createDate="2010-10-12T12:14:52" updateDate="2010-10-12T12:15:19" nodeName="pharetra et fermentum" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1206" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-08-09T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1207" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="17" createDate="2010-10-12T12:15:31" updateDate="2010-10-12T12:15:51" nodeName="Fusce augue purus" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1207" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-09-14T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1208" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="18" createDate="2010-10-12T12:16:25" updateDate="2010-10-12T12:16:45" nodeName="Class aptent taciti" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1208" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-06-04T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1209" parentID="1081" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="19" createDate="2010-10-12T12:17:01" updateDate="2010-10-12T12:17:29" nodeName="Class aptent" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081,1209" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-06-21T00:00:00</archiveUnder>
            </BlogPost>
        </Room>
        <Room id="1082" parentID="1079" level="4" writerID="0" creatorID="0" nodeType="1077" template="0" sortOrder="2" createDate="2010-09-27T14:12:33" updateDate="2010-10-07T14:43:09" nodeName="Test Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1082" isDoc="">
            <BlogPost id="1182" parentID="1082" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="1" createDate="2010-10-08T17:51:19" updateDate="2010-10-08T17:51:58" nodeName="Test Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1082,1182" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
        <Room id="1083" parentID="1079" level="4" writerID="0" creatorID="0" nodeType="1077" template="1089" sortOrder="3" createDate="2010-09-27T14:12:40" updateDate="2010-10-07T14:49:48" nodeName="Test Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1083" isDoc="">
            <BlogPost id="1183" parentID="1083" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="1" createDate="2010-10-08T17:52:22" updateDate="2010-10-08T17:52:39" nodeName="Test Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1083,1183" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
    </BlogCentre>
    <BlogCentre id="1080" parentID="1078" level="3" writerID="0" creatorID="0" nodeType="1075" template="1076" sortOrder="2" createDate="2010-09-27T14:11:55" updateDate="2010-10-07T14:43:23" nodeName="Blog Centre 2" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080" isDoc="">
        <Room id="1084" parentID="1080" level="4" writerID="0" creatorID="0" nodeType="1077" template="0" sortOrder="1" createDate="2010-09-27T14:12:45" updateDate="2010-10-07T14:43:17" nodeName="Room 1" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1084" isDoc="">
            <BlogPost id="1184" parentID="1084" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="1" createDate="2010-10-08T17:53:05" updateDate="2010-10-08T17:53:29" nodeName="Blog Post 3" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1084,1184" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
        <Room id="1085" parentID="1080" level="4" writerID="0" creatorID="0" nodeType="1077" template="0" sortOrder="2" createDate="2010-09-27T14:12:50" updateDate="2010-10-07T14:43:19" nodeName="Room 2" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1085" isDoc="">
            <BlogPost id="1185" parentID="1085" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="1" createDate="2010-10-08T17:53:51" updateDate="2010-10-08T17:54:15" nodeName="Blog Post 109" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1085,1185" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
        <Room id="1086" parentID="1080" level="4" writerID="0" creatorID="0" nodeType="1077" template="1089" sortOrder="3" createDate="2010-09-27T14:12:55" updateDate="2010-10-07T14:50:39" nodeName="Room 3" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1086" isDoc="">
            <BlogPost id="1186" parentID="1086" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="1" createDate="2010-10-08T17:54:28" updateDate="2010-10-08T17:54:51" nodeName="Blog Post 123" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1086,1186" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
    </BlogCentre>
</Blog>

在Umbraco XSLT样式表中，有一个参数可以传递给当前页面。

<xsl:param name="currentPage" />

这将始终是父节点<Blog />，因此我们必须在此处开始表单。

您会注意到<Blog />和<BlogPost />之间存在中间节点，但我们希望计算每个<BlogCentre />和<Room />中的BlogPost总数。

要做到这一点，我一直在使用

<xsl:for-each select="$currentPage/descendant::BlogPost" />

选择所有博客帖子，无论中心/房间。

现在我的要求是，按月和年对每个博客帖子进行分组（包括每个月的帖子计数）。我要将它们分组的日期是属性createDate 除非 有一个名为<archiveUnder>some-date-here</archiveUnder>的子节点。进一步解释

更新
我可以通过检查属性是否为空来轻松完成此部分，因此如果需要，解决方案可以省略此部分。

<BlogPost createDate="2010-10-08T17:52:22">
    <!-- no archiveUnder -->
</BlogPost>

^ 使用创建日期

<BlogPost createDate="2010-10-08T17:52:22">
    <archiveUnder>2010-10-08T17:51:19</archiveUnder>
</BlogPost>

^ 使用archiveUnder

  

最后，这是预期输出的一个示例。

<ul>
    <li>
        <h3>2010</h3>
        <ul>
            <li>September (4)</li>
            <li>August (2)</li>
            <li>June (5)</li> <!-- No July because there are no posts -->
        </ul>
    </li>
    <li>
        <h3>2009</h3>
        <ul>
            <li>April (4)</li>
            <li>March (2)</li>
            <li>January (5)</li> <!-- No February because there are no posts -->
        </ul>
    </li>
</ul>

Answer 1

此转换（141行但已格式化以便于阅读）：

<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
 xmlns:m="my:months" exclude-result-prefixes="m" >
 <xsl:output omit-xml-declaration="yes" indent="yes"/>

 <xsl:param name="currentPage" select="/*"/>

 <m:months>
   <m>January</m>
   <m>February</m>
   <m>March</m>
   <m>April</m>
   <m>May</m>
   <m>June</m>
   <m>July</m>
   <m>August</m>
   <m>September</m>
   <m>October</m>
   <m>November</m>
   <m>December</m>
 </m:months>

 <xsl:variable name="vMonthNames" select=
  "document('')/*/m:months/*"/>

 <xsl:key name="kPostsByYear" match="BlogPost"
  use="substring-before(
                    concat(archiveUnder,
                           @createDate[not(archiveUnder)]
                           ),
                    '-'
                        )"/>

 <xsl:key name="kPostsByYearMonth" match="BlogPost"
  use="substring(
                 concat(archiveUnder,
                        @createDate[not(archiveUnder)]
                        ),
                 1,7
                 )"/>

 <xsl:template match="/">
   <ul>
    <xsl:apply-templates mode="year" select=
     "$currentPage/*/*/BlogPost
          [generate-id()
          =
           generate-id(key('kPostsByYear',
                       substring-before(
                       concat(archiveUnder,
                              @createDate[not(archiveUnder)]
                              ),
                              '-'
                                         )
                            )[1]
                       )
              ]
     ">
       <xsl:sort order="descending" select=
        "substring-before(
                    concat(archiveUnder,
                           @createDate[not(archiveUnder)]
                           ),

                           '-'
                          )
        "/>
   </xsl:apply-templates>
  </ul>
 </xsl:template>

 <xsl:template match="BlogPost" mode="year">
  <xsl:variable name="vYear" select=
    "substring-before(
                     concat(archiveUnder,
                            @createDate[not(archiveUnder)]
                            ),

                      '-')
    "/>
  <xsl:variable name="vyearBlogs"
                select="key('kPostsByYear',$vYear)"/>
  <li>
    <h3><xsl:value-of select="$vYear"/></h3>
    <ul>
      <xsl:apply-templates mode="month" select=
          "$vyearBlogs
             [generate-id()
             =
              generate-id(key('kPostsByYearMonth',
                          substring(
                        concat(archiveUnder,
                               @createDate[not(archiveUnder)]
                               ),

                        1,7
                                    )
                              )[1]
                          )
              ]
          ">
         <xsl:sort order="descending" select=
            "substring(
                 concat(archiveUnder,
                        @createDate[not(archiveUnder)]
                        ),

                 6,2)"
         />
      </xsl:apply-templates>
   </ul>
  </li>
 </xsl:template>

 <xsl:template match="BlogPost" mode="month">
  <xsl:variable name="vMonth" select=
   "substring(
        concat(archiveUnder,
               @createDate[not(archiveUnder)]
               ),

        6,2)"/>

  <xsl:variable name="vmonthsBlogs" select=
    "key('kPostsByYearMonth',
         substring(
              concat(archiveUnder,
                     @createDate[not(archiveUnder)]
                     ),

              1,7)
         )"/>
  <li><xsl:value-of select=
        "concat($vMonthNames[position()=$vMonth],
                ' (',
                count($vmonthsBlogs),
                ')'
                )"/>
  </li>
 </xsl:template>
</xsl:stylesheet>

应用于提供的示例XML文档（我们正在访问$currentPage <xsl:param>以外的每个节点，因为这将在真正的Umbraco案例中），格式化以便于阅读每个createDate的{​​{1}}属性在元素名称后面的第一行上移动：

BlogPost

产生想要的正确结果：

<Blog id="1078" parentID="1049" level="2" writerID="0" creatorID="0" nodeType="1073" template="1089" sortOrder="7" createDate="2010-09-27T14:11:04" updateDate="2010-10-12T16:59:12" nodeName="Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078" isDoc="">
    <newPageTitle>The Lorem Ipsum Blog</newPageTitle>
    <BlogCentre id="1079" parentID="1078" level="3" writerID="0" creatorID="0" nodeType="1075" template="1076" sortOrder="1" createDate="2010-09-27T14:11:49" updateDate="2010-10-07T14:43:13" nodeName="Blog Centre 1" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079" isDoc="">
        <Room id="1081" parentID="1079" level="4" writerID="0" creatorID="0" nodeType="1077" template="0" sortOrder="1" createDate="2010-09-27T14:12:26" updateDate="2010-10-07T14:43:06" nodeName="Room 10" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1081" isDoc="">
            <BlogPost id="1175" parentID="1081" level="5"
            createDate="2010-10-07T14:51:48"
            writerID="0" creatorID="0" nodeType="1087"
            template="1192" sortOrder="1"
            updateDate="2010-10-12T21:30:53"
            nodeName="The first ever Blog post"
            writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1175" isDoc="">
                <topicTitle>The first ever blog</topicTitle>
                <archiveUnder/>
            </BlogPost>
            <BlogPost id="1180" parentID="1081"
             createDate="2010-10-08T15:52:20"
             level="5" writerID="0" creatorID="3"
             nodeType="1087" template="1089"
             sortOrder="2"
             updateDate="2010-10-12T16:57:00" nodeName="asdasd"
             writerName="Administrator" creatorName="ZX"
             path="-1,1049,1078,1079,1081,1180" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
            <BlogPost id="1181" parentID="1081" level="5"
             createDate="2010-10-08T17:50:19"
             writerID="0" creatorID="0" nodeType="1087"
             template="1089" sortOrder="3"
             updateDate="2010-10-12T11:40:37"
             nodeName="condimentum"
             writerName="Administrator"
             creatorName="Administrator"
             path="-1,1049,1078,1079,1081,1181" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-09-01T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1194" parentID="1081" level="5"
            createDate="2010-10-12T11:41:50"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="4"
            updateDate="2010-10-12T11:42:37"
            nodeName="Nam augue" writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1194" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-08-05T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1195" parentID="1081" level="5"
            createDate="2010-10-12T11:42:15"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="5"
            updateDate="2010-10-12T11:42:25"
            nodeName="consequat nunc"
            writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1195" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-08-12T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1196" parentID="1081" level="5"
            createDate="2010-10-12T12:05:57"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="6"
            updateDate="2010-10-12T12:08:40"
            nodeName="cursus congue"
            writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1196" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2009-10-22T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1197" parentID="1081" level="5"
             createDate="2010-10-12T12:08:54"
             writerID="0" creatorID="0" nodeType="1087"
             template="1089" sortOrder="7"
             updateDate="2010-10-12T12:09:24"
             nodeName="inceptos" writerName="Administrator"
             creatorName="Administrator"
             path="-1,1049,1078,1079,1081,1197" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2009-11-19T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1198" parentID="1081" level="5"
            createDate="2010-10-12T12:09:45"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="8"
            updateDate="2010-10-12T12:10:13"
            nodeName="inceptos himenaeos"
            writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1198" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2009-12-16T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1199" parentID="1081" level="5"
             createDate="2010-10-12T12:10:29"
             writerID="0" creatorID="0" nodeType="1087"
             template="1089" sortOrder="9"
             updateDate="2010-10-12T12:10:56"
             nodeName="consequat" writerName="Administrator"
             creatorName="Administrator"
             path="-1,1049,1078,1079,1081,1199" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-01-13T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1200" parentID="1081" level="5"
            createDate="2010-10-12T12:11:08"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="10"
            updateDate="2010-10-12T12:11:35"
            nodeName="himenaeos" writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1200" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-02-09T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1201" parentID="1081" level="5"
             createDate="2010-10-12T12:11:45"
             writerID="0" creatorID="0" nodeType="1087"
             template="1089" sortOrder="11"
             updateDate="2010-10-12T12:12:35"
             nodeName="cursus congue" writerName="Administrator"
             creatorName="Administrator"
             path="-1,1049,1078,1079,1081,1201" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-04-22T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1202" parentID="1081" level="5"
            createDate="2010-10-12T12:12:18"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="12"
            updateDate="2010-10-12T12:12:45" nodeName="pharetra"
            writerName="Administrator" creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1202" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-03-09T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1203" parentID="1081" level="5"
            createDate="2010-10-12T12:13:05"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="13"
            updateDate="2010-10-12T12:13:27"
            nodeName="inceptos himenaeos"
            writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1203" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-05-26T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1204" parentID="1081" level="5"
            createDate="2010-10-12T12:13:36"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="14"
            updateDate="2010-10-12T12:13:56"
            nodeName="pharetra" writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1204" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-06-11T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1205" parentID="1081" level="5"
            createDate="2010-10-12T12:14:06"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="15"
            updateDate="2010-10-12T12:14:41"
            nodeName="Fusce augue" writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1205" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-07-08T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1206" parentID="1081" level="5"
            createDate="2010-10-12T12:14:52"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="16"
            updateDate="2010-10-12T12:15:19"
            nodeName="pharetra et fermentum"
            writerName="Administrator" creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1206" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-08-09T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1207" parentID="1081"
            createDate="2010-10-12T12:15:31"
            level="5" writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="17"
            updateDate="2010-10-12T12:15:51"
            nodeName="Fusce augue purus" writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1207" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-09-14T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1208" parentID="1081" level="5"
            createDate="2010-10-12T12:16:25"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="18"
            updateDate="2010-10-12T12:16:45"
            nodeName="Class aptent taciti" writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1208" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-06-04T00:00:00</archiveUnder>
            </BlogPost>
            <BlogPost id="1209" parentID="1081" level="5"
            createDate="2010-10-12T12:17:01"
            writerID="0" creatorID="0" nodeType="1087"
            template="1089" sortOrder="19"
            updateDate="2010-10-12T12:17:29" nodeName="Class aptent"
            writerName="Administrator" creatorName="Administrator"
            path="-1,1049,1078,1079,1081,1209" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
                <archiveUnder>2010-06-21T00:00:00</archiveUnder>
            </BlogPost>
        </Room>
        <Room id="1082" parentID="1079" level="4"
        createDate="2010-09-27T14:12:33"
        writerID="0" creatorID="0" nodeType="1077" template="0"
        sortOrder="2"
        updateDate="2010-10-07T14:43:09" nodeName="Test Blog"
        writerName="Administrator" creatorName="Administrator"
        path="-1,1049,1078,1079,1082" isDoc="">
            <BlogPost id="1182" parentID="1082" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="1" createDate="2010-10-08T17:51:19" updateDate="2010-10-08T17:51:58" nodeName="Test Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1082,1182" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
        <Room id="1083" parentID="1079" level="4" writerID="0"
        createDate="2010-09-27T14:12:40"
        creatorID="0" nodeType="1077" template="1089" sortOrder="3"
        updateDate="2010-10-07T14:49:48" nodeName="Test Blog"
        writerName="Administrator" creatorName="Administrator"
        path="-1,1049,1078,1079,1083" isDoc="">
            <BlogPost id="1183" parentID="1083" level="5" writerID="0" creatorID="0" nodeType="1087" template="1089" sortOrder="1" createDate="2010-10-08T17:52:22" updateDate="2010-10-08T17:52:39" nodeName="Test Blog" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1079,1083,1183" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
    </BlogCentre>
    <BlogCentre id="1080" parentID="1078" level="3" writerID="0"
    createDate="2010-09-27T14:11:55"
    creatorID="0" nodeType="1075" template="1076" sortOrder="2"
    updateDate="2010-10-07T14:43:23" nodeName="Blog Centre 2"
    writerName="Administrator" creatorName="Administrator"
    path="-1,1049,1078,1080" isDoc="">
        <Room id="1084" parentID="1080" level="4" writerID="0" creatorID="0" nodeType="1077" template="0" sortOrder="1" createDate="2010-09-27T14:12:45" updateDate="2010-10-07T14:43:17" nodeName="Room 1" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1084" isDoc="">
            <BlogPost id="1184" parentID="1084" level="5" writerID="0"
            createDate="2010-10-08T17:53:05"
            creatorID="0" nodeType="1087" template="1089" sortOrder="1"
            updateDate="2010-10-08T17:53:29" nodeName="Blog Post 3"
            writerName="Administrator" creatorName="Administrator"
            path="-1,1049,1078,1080,1084,1184" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
        <Room id="1085" parentID="1080" level="4" writerID="0"
        createDate="2010-09-27T14:12:50"
        creatorID="0" nodeType="1077" template="0" sortOrder="2"
        updateDate="2010-10-07T14:43:19" nodeName="Room 2"
        writerName="Administrator" creatorName="Administrator"
        path="-1,1049,1078,1080,1085" isDoc="">
            <BlogPost id="1185" parentID="1085" level="5" writerID="0"
            createDate="2010-10-08T17:53:51"
            creatorID="0" nodeType="1087" template="1089" sortOrder="1"
            updateDate="2010-10-08T17:54:15" nodeName="Blog Post 109"
            writerName="Administrator" creatorName="Administrator"
            path="-1,1049,1078,1080,1085,1185" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
        <Room id="1086" parentID="1080" level="4" writerID="0" creatorID="0" nodeType="1077" template="1089" sortOrder="3" createDate="2010-09-27T14:12:55" updateDate="2010-10-07T14:50:39" nodeName="Room 3" writerName="Administrator" creatorName="Administrator" path="-1,1049,1078,1080,1086" isDoc="">
            <BlogPost id="1186" parentID="1086" level="5" writerID="0"
            createDate="2010-10-08T17:54:28"
            creatorID="0" nodeType="1087" template="1089" sortOrder="1"
            updateDate="2010-10-08T17:54:51"
            nodeName="Blog Post 123" writerName="Administrator"
            creatorName="Administrator"
            path="-1,1049,1078,1080,1086,1186" isDoc="">
                <topicTitle>Lorem Ipsum</topicTitle>
            </BlogPost>
        </Room>
    </BlogCentre>
</Blog>

请注意：

1. Muenchian Grouping - 用于确定不同年份和确定每年的不同月份。

2. 使用表达式在<ul> <li> <h3>2010</h3> <ul> <li>October (7)</li> <li>September (2)</li> <li>August (3)</li> <li>July (1)</li> <li>June (3)</li> <li>May (1)</li> <li>April (1)</li> <li>March (1)</li> <li>February (1)</li> <li>January (1)</li> </ul> </li> <li> <h3>2009</h3> <ul> <li>December (1)</li> <li>November (1)</li> <li>October (1)</li> </ul> </li> </ul> 属性和createDate子项之间选择日期：

   concat（archiveUnder，@ createDate [not（archiveUnder）]）

如果archiveUnder缺失或为空，则此连接仅选择@createDate。

0.3。 即使元素的日期未排序，转换也会产生正确的结果。

Answer 2

如Jeni Tennison所述，这将是一个两步法：

1. 通过博客文章确定月份。
2. 获取特定月份的所有帖子。

我们可以使用以下XPath表达式获取第一部分：

BlogPost[not (substring(@createDate, 1, 7) 
    = substring(preceding-sibling::*[1]/@createDate, 1, 7))]

然后，对于第二部分，我们需要使用count()函数计算帖子：

BlogPost[not (substring(@createDate, 1, 7) 
    = substring(preceding-sibling::*[1]/@createDate, 1, 7))]

在我们的XSLT中，我们可以使用如下表达式：

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" indent="yes"/>

  <xsl:template match="Room">
    <ul>
      <xsl:for-each select="BlogPost[not (substring(@createDate, 1, 7) = substring(preceding-sibling::*[1]/@createDate, 1, 7))]">
        <xsl:sort select="@createDate" order="descending"/>
        <li>
          <xsl:value-of select="substring(@createDate, 1, 7)"/>
          <xsl:text>(</xsl:text>
          <xsl:value-of select="count(//BlogPost[substring(@createDate, 1, 7) = substring(current()/@createDate, 1, 7)]) "/>
          <xsl:text>)</xsl:text>
        </li>
      </xsl:for-each>
    </ul>
  </xsl:template>

</xsl:stylesheet>

上面的样式表只是按月工作，不考虑多年。为了支持多年，您可以添加一个额外的步骤来获得独特的年份：

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" indent="yes"/>

  <xsl:template match="Room">
    <ul>
      <xsl:for-each select="BlogPost[not (substring(@createDate, 1, 4) = substring(preceding-sibling::*[1]/@createDate, 1, 4))]">
        <xsl:sort select="@createDate" order="descending"/>
        <li>
          <xsl:value-of select="substring(@createDate, 1, 4)"/>
          <ul>
            <xsl:for-each select="//BlogPost[substring(@createDate, 1, 4) = substring(current()/@createDate, 1, 4) and not (substring(@createDate, 1, 7) = substring(preceding-sibling::*[1]/@createDate, 1, 7))]">
              <xsl:sort select="@createDate" order="descending"/>
              <li>
                <xsl:value-of select="substring(@createDate, 1, 7)"/>
                <xsl:text>(</xsl:text>
                <xsl:value-of select="count(//BlogPost[substring(@createDate, 1, 7) = substring(current()/@createDate, 1, 7)]) "/>
                <xsl:text>)</xsl:text>
              </li>
            </xsl:for-each>
          </ul>
        </li>
      </xsl:for-each>
    </ul>
  </xsl:template>

</xsl:stylesheet>

Answer 3

此样式表：

<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
 xmlns:m="month"
 exclude-result-prefixes="m">
    <xsl:param name="currentPage" select="/Blog"/>
    <xsl:key name="kBlogPostByYear" match="BlogPost"
             use="substring((@createDate|archiveUnder)[last()],1,4)"/>
    <xsl:key name="kBlogPostByYearMonth" match="BlogPost"
             use="substring((@createDate|archiveUnder)[last()],1,7)"/>
    <m:month>January</m:month>
    <m:month>February</m:month>
    <m:month>March</m:month>
    <m:month>April</m:month>
    <m:month>May</m:month>
    <m:month>June</m:month>
    <m:month>July</m:month>
    <m:month>August</m:month>
    <m:month>September</m:month>
    <m:month>October</m:month>
    <m:month>November</m:month>
    <m:month>December</m:month>
    <xsl:variable name="vMonth" select="document('')/*/m:*"/>
    <xsl:template match="/">
        <ul>
            <xsl:apply-templates
                 select="$currentPage/*/*/BlogPost
                                 [count(.|key('kBlogPostByYear',
                                              substring((@createDate|
                                                         archiveUnder)
                                                         [last()],
                                                        1,
                                                        4))[1])=1]">
                <xsl:sort select="substring((@createDate|archiveUnder)
                                            [last()],
                                            1,4)" order="descending"/>
            </xsl:apply-templates>
        </ul>
    </xsl:template>
    <xsl:template match="BlogPost">
        <xsl:variable name="vYear" select="substring((@createDate|
                                                      archiveUnder)[last()],
                                                      1,
                                                      4)"/>
        <ul>
            <h3>
                <xsl:value-of select="$vYear"/>
            </h3>
            <ul>
                <xsl:apply-templates
                     select="$currentPage/*/*/BlogPost
                                         [generate-id() =
                                          generate-id(
                                             key('kBlogPostByYearMonth',
                                                 concat($vYear,'-',
                                                        substring(
                                                           (@createDate|
                                                            archiveUnder)
                                                                 [last()],
                                                           6,
                                                           2))))]"
                                     mode="month">
                    <xsl:sort select="substring((@createDate|archiveUnder)
                                                [last()],
                                                6,2)" order="descending"/>
                </xsl:apply-templates>
            </ul>
        </ul>
    </xsl:template>
        <xsl:template match="BlogPost" mode="month">
        <xsl:variable name="vDate"
                      select="(@createDate|archiveUnder)[last()]"/>
        <li>
            <xsl:value-of select="concat($vMonth
                                            [number(
                                               substring($vDate,
                                                         6,
                                                         2))],
                                         ' (',
                                         count(key('kBlogPostByYearMonth',
                                                   substring($vDate,1,7))),
                                         ')')"/>
        </li>
    </xsl:template>
</xsl:stylesheet>

输出：

<ul>
    <ul>
        <h3>2010</h3>
        <ul>
            <li>October (7)</li>
            <li>September (2)</li>
            <li>August (3)</li>
            <li>July (1)</li>
            <li>June (3)</li>
            <li>May (1)</li>
            <li>April (1)</li>
            <li>March (1)</li>
            <li>February (1)</li>
            <li>January (1)</li>
        </ul>
    </ul>
    <ul>
        <h3>2009</h3>
        <ul>
            <li>December (1)</li>
            <li>November (1)</li>
            <li>October (1)</li>
        </ul>
    </ul>
</ul>

编辑3 ：抱歉，我错过了排序。现在补充说。此外，具有$currentPage参数的小型重构。