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xslt - xsl grouping of repetitive nodes by xml element in xslt1

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xslt - xsl grouping of repetitive nodes by xml element in xslt1

I have a complex xml structure that looks like : 

  <Items>
      <Item>
          <ItemTexts>
            <ItemText>
              <ItemTextsType>type1</ItemTextsType>
              <ItemTextsTypeDesc>description11</ItemTextsTypeDesc>
              <ItemTextsLine>1</ItemTextsLine>
            </ItemText>
            <ItemText>
              <ItemTextsType>type1</ItemTextsType>
              <ItemTextsTypeDesc>description12</ItemTextsTypeDesc>
              <ItemTextsLine>2</ItemTextsLine>
            </ItemText>
            <ItemText>
              <ItemTextsType>type2</ItemTextsType>
              <ItemTextsTypeDesc>description21</ItemTextsTypeDesc>
              <ItemTextsLine>3</ItemTextsLine>
            </ItemText>
            <ItemText>
              <ItemTextsType>type2</ItemTextsType>
              <ItemTextsTypeDesc>description22</ItemTextsTypeDesc>
              <ItemTextsLine>4</ItemTextsLine>
            </ItemText>
          </ItemTexts>
         </Item>
    <Item>
          <ItemTexts>
            <ItemText>
              <ItemTextsType>type1</ItemTextsType>
              <ItemTextsTypeDesc>description11</ItemTextsTypeDesc>
              <ItemTextsLine>1</ItemTextsLine>
            </ItemText>
            <ItemText>
              <ItemTextsType>type1</ItemTextsType>
              <ItemTextsTypeDesc>description12</ItemTextsTypeDesc>
              <ItemTextsLine>2</ItemTextsLine>
            </ItemText>
            <ItemText>
              <ItemTextsType>type2</ItemTextsType>
              <ItemTextsTypeDesc>description21</ItemTextsTypeDesc>
              <ItemTextsLine>3</ItemTextsLine>
            </ItemText>
            <ItemText>
              <ItemTextsType>type2</ItemTextsType>
              <ItemTextsTypeDesc>description22</ItemTextsTypeDesc>
              <ItemTextsLine>4</ItemTextsLine>
            </ItemText>
          </ItemTexts>
         </Item>
<Item>
          <ItemTexts>
            <ItemText>
              <ItemTextsType>type1</ItemTextsType>
              <ItemTextsTypeDesc>description11</ItemTextsTypeDesc>
              <ItemTextsLine>1</ItemTextsLine>
            </ItemText>
            <ItemText>
              <ItemTextsType>type1</ItemTextsType>
              <ItemTextsTypeDesc>description12</ItemTextsTypeDesc>
              <ItemTextsLine>2</ItemTextsLine>
            </ItemText>
            <ItemText>
              <ItemTextsType>type2</ItemTextsType>
              <ItemTextsTypeDesc>description21</ItemTextsTypeDesc>
              <ItemTextsLine>3</ItemTextsLine>
            </ItemText>
            <ItemText>
              <ItemTextsType>type2</ItemTextsType>
              <ItemTextsTypeDesc>description22</ItemTextsTypeDesc>
              <ItemTextsLine>4</ItemTextsLine>
            </ItemText>
          </ItemTexts>
         </Item>
    <Item>
          <ItemTexts>
            <ItemText>
              <ItemTextsType>type3</ItemTextsType>
              <ItemTextsTypeDesc>description31</ItemTextsTypeDesc>
              <ItemTextsLine>1</ItemTextsLine>
            </ItemText>
            <ItemText>
              <ItemTextsType>type3</ItemTextsType>
              <ItemTextsTypeDesc>description32</ItemTextsTypeDesc>
              <ItemTextsLine>2</ItemTextsLine>
            </ItemText>
            <ItemText>
              <ItemTextsType>type2</ItemTextsType>
              <ItemTextsTypeDesc>description21</ItemTextsTypeDesc>
              <ItemTextsLine>3</ItemTextsLine>
            </ItemText>
            <ItemText>
              <ItemTextsType>type2</ItemTextsType>
              <ItemTextsTypeDesc>description22</ItemTextsTypeDesc>
              <ItemTextsLine>4</ItemTextsLine>
            </ItemText>
          </ItemTexts>
         </Item>
    </Items>

I run with xsl on each Item like :

<xsl:for-each select="Items/Item">

I need an example of how to group <ItemText> by <ItemTextsType> individually for each <Item> so the outcome will be like :

For first <Item> in this example :

type1 

description11

description12

type2

description21

description22

For second Item in this example :

type3 

description31

description32

type2

description21

description22

of course I will arrange the outcome in a table like :

<table width="100%" border="1" style="display: block;">
        <tbody>
            <tr>
                <td id="SelectedRowLinkageContents">
                    <table width="100%" dir="ltr">
                        <tbody>
                            <tr style="background-color: #507CD1; text-align: center">
                                <td colspan="3" style="font: bold; color: white">
                                    Item1
                                </td>
                            </tr>
                            <tr>
                                <td style="height: 35px; font: bold; color: #507CD1;">
                                    type1
                                </td>
                            </tr>
                            <tr>
                                <td>
                                    desription11
                                </td>
                            </tr>
                            <tr>
                                <td>
                                    desription12
                                </td>
                            </tr>
                            <tr>
                                <td style="height: 35px; font: bold; color: #507CD1;">
                                    type2
                                </td>
                            </tr>
                            <tr>
                                <td>
                                    desription21
                                </td>
                            </tr>
                            <tr>
                                <td>
                                    desription22
                                </td>
                            </tr>
                            <tr>
                                <td>
                                    desription23
                                </td>
                            </tr>
                        </tbody>
                    </table>

                    <table width="100%" dir="ltr">
                        <tbody>
                            <tr style="background-color: #507CD1; text-align: center">
                                <td colspan="3" style="font: bold; color: white">
                                    Item2
                                </td>
                            </tr>
                            <tr>
                                <td style="height: 35px; font: bold; color: #507CD1;">
                                    type1
                                </td>
                            </tr>
                            <tr>
                                <td>
                                    desription11
                                </td>
                            </tr>
                            <tr>
                                <td>
                                    desription12
                                </td>
                            </tr>
                            <tr>
                                <td style="height: 35px; font: bold; color: #507CD1;">
                                    type2
                                </td>
                            </tr>
                            <tr>
                                <td>
                                    desription21
                                </td>
                            </tr>

                            <tr>
                                <td>
                                    desription23
                                </td>
                            </tr>
                        </tbody>
                    </table>

                    <table width="100%" dir="ltr">
                        <tbody>
                            <tr style="background-color: #507CD1; text-align: center">
                                <td colspan="3" style="font: bold; color: white">
                                    Item3
                                </td>
                            </tr>
                            <tr>
                                <td style="height: 35px; font: bold; color: #507CD1;">
                                    type1
                                </td>
                            </tr>
                            <tr>
                                <td>
                                    desription11
                                </td>
                            </tr>
                            <tr>
                                <td>
                                    desription12
                                </td>
                            </tr>
                            <tr>
                                <td style="height: 35px; font: bold; color: #507CD1;">
                                    type2
                                </td>
                            </tr>
                            <tr>
                                <td>
                                    desription21
                                </td>
                            </tr>

                            <tr>
                                <td>
                                    desription23
                                </td>
                            </tr>
                        </tbody>
                    </table>
                </td>
            </tr>
        </tbody>
    </table>

The point is that there is separate grouping for each <Item> into


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1 Answer

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It's still difficult to tell what the desired solution is due to some discrepancies - for instance, your input XML has 4 <Item> elements, but your desired output only takes 3 of them into account. Additionally, several descriptions in your desired output do not match up with their expected location in the input XML document.

That said, if we focus on your stated desired solution:

"The point is that there is separate grouping for each <Item> into it's own <table> and inside that <table> there is groupping by <ItemTextsType>"

...then this ought to get you in the right direction.

When this XSLT:

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

  <xsl:key
    name="kItemTextByType"
    match="ItemText"
    use="concat(generate-id(ancestor::Item[1]), '+', ItemTextsType)" />

  <xsl:template match="node()|@*">
    <xsl:copy>
      <xsl:apply-templates select="node()|@*" />
    </xsl:copy>
  </xsl:template>

  <xsl:template match="/*">
    <table width="100%" border="1" style="display: block;">
      <tbody>
        <tr>
          <td id="SelectedRowLinkageContents">
            <xsl:apply-templates />
          </td>
        </tr>
      </tbody>
    </table>
  </xsl:template>

  <xsl:template match="Item">
    <table width="100%" dir="ltr">
      <tbody>
        <tr style="background-color: #507CD1; text-align: center">
          <td colspan="3" style="font: bold; color: white">
            <xsl:value-of select="concat('Item', position())" />
          </td>
        </tr>
        <xsl:apply-templates 
          select="ItemTexts/ItemText[
            generate-id() = 
            generate-id(
              key(
                'kItemTextByType', 
                 concat(generate-id(current()), '+', ItemTextsType)
              )[1]
            )
          ]">
          <xsl:sort select="ItemTextsType" />
        </xsl:apply-templates>
      </tbody>
    </table>
  </xsl:template>

  <xsl:template match="ItemText">
    <tr>
      <td style="height: 35px; font: bold; color: #507CD1;">
        <xsl:value-of select="ItemTextsType" />
      </td>
    </tr>
    <xsl:for-each
      select="key(
        'kItemTextByType', 
        concat(
          generate-id(ancestor::Item[1]),
          '+',
          ItemTextsType
        )
      )"
    >
      <xsl:sort select="ItemTextsTypeDesc" />
      <tr>
        <td>
          <xsl:value-of select="ItemTextsTypeDesc" />
        </td>
      </tr>
    </xsl:for-each>
  </xsl:template>

</xsl:stylesheet>

...is applied to the provided input XML:

<?xml version="1.0" encoding="UTF-8"?>
<Items>
  <Item>
    <ItemTexts>
      <ItemText>
        <ItemTextsType>type1</ItemTextsType>
        <ItemTextsTypeDesc>description11</ItemTextsTypeDesc>
        <ItemTextsLine>1</ItemTextsLine>
      </ItemText>
      <ItemText>
        <ItemTextsType>type1</ItemTextsType>
        <ItemTextsTypeDesc>description12</ItemTextsTypeDesc>
        <ItemTextsLine>2</ItemTextsLine>
      </ItemText>
      <ItemText>
        <ItemTextsType>type2</ItemTextsType>
        <ItemTextsTypeDesc>description21</ItemTextsTypeDesc>
        <ItemTextsLine>3</ItemTextsLine>
      </ItemText>
      <ItemText>
        <ItemTextsType>type2</ItemTextsType>
        <ItemTextsTypeDesc>description22</ItemTextsTypeDesc>
        <ItemTextsLine>4</ItemTextsLine>
      </ItemText>
    </ItemTexts>
  </Item>
  <Item>
    <ItemTexts>
      <ItemText>
        <ItemTextsType>type1</ItemTextsType>
        <ItemTextsTypeDesc>description11</ItemTextsTypeDesc>
        <ItemTextsLine>1</ItemTextsLine>
      </ItemText>
      <ItemText>
        <ItemTextsType>type1</ItemTextsType>
        <ItemTextsTypeDesc>description12</ItemTextsTypeDesc>
        <ItemTextsLine>2</ItemTextsLine>
      </ItemText>
      <ItemText>
        <ItemTextsType>type2</ItemTextsType>
        <ItemTextsTypeDesc>description21</ItemTextsTypeDesc>
        <ItemTextsLine>3</ItemTextsLine>
      </ItemText>
      <ItemText>
        <ItemTextsType>type2</ItemTextsType>
        <ItemTextsTypeDesc>description22</ItemTextsTypeDesc>
        <ItemTextsLine>4</ItemTextsLine>
      </ItemText>
    </ItemTexts>
  </Item>
  <Item>
    <ItemTexts>
      <ItemText>
        <ItemTextsType>type1</ItemTextsType>
        <ItemTextsTypeDesc>description11</ItemTextsTypeDesc>
        <ItemTextsLine>1</ItemTextsLine>
      </ItemText>
      <ItemText>
        <ItemTextsType>type1</ItemTextsType>
        <ItemTextsTypeDesc>description12</ItemTextsTypeDesc>
        <ItemTextsLine>2</ItemTextsLine>
      </ItemText>
      <ItemText>
        <ItemTextsType>type2</ItemTextsType>
        <ItemTextsTypeDesc>description21</ItemTextsTypeDesc>
        <ItemTextsLine>3</ItemTextsLine>
      </ItemText>
      <ItemText>
        <ItemTextsType>type2</ItemTextsType>
        <ItemTextsTypeDesc>description22</ItemTextsTypeDesc>
        <ItemTextsLine>4</ItemTextsLine>
      </ItemText>
    </ItemTexts>
  </Item>
  <Item>
    <ItemTexts>
      <ItemText>
        <ItemTextsType>type3</ItemTextsType>
        <ItemTextsTypeDesc>description31</ItemTextsTypeDesc>
        <ItemTextsLine>1</ItemTextsLine>
      </ItemText>
      <ItemText>
        <ItemTextsType>type3</ItemTextsType>
        <ItemTextsTypeDesc>description32</ItemTextsTypeDesc>
        <ItemTextsLine>2</ItemTextsLine>
      </ItemText>
      <ItemText>
        <ItemTextsType>type2</ItemTextsType>
        <ItemTextsTypeDesc>description21</ItemTextsTypeDesc>
        <ItemTextsLine>3</ItemTextsLine>
      </ItemText>
      <ItemText>
        <ItemTextsType>type2</ItemTextsType>
        <ItemTextsTypeDesc>description22</ItemTextsTypeDesc>
        <ItemTextsLine>4</ItemTextsLine>
      </ItemText>
    </ItemTexts>
  </Item>
</Items>

...the wanted result is (I think) produced:

<table width="100%" border="1" style="display: block;">
  <tbody>
    <tr>
      <td id="SelectedRowLinkageContents">
        <table width="100%" dir="ltr">
          <tbody>
            <tr style="background-color: #507CD1; text-align: center">
              <td colspan="3" style="font: bold; color: white">Item1</td>
            </tr>
            <tr>
              <td style="height: 35px; font: bold; color: #507CD1;">type1</td>
            </tr>
            <tr>
              <td>description11</td>
            </tr>
            <tr>
              <td>description12</td>
            </tr>
            <tr>
              <td style="height: 35px; font: bold; color: #507CD1;">type2</td>
            </tr>
            <tr>
              <td>description21</td>
            </tr>
            <tr>
              <td>description22</td>
            </tr>
          </tbody>
        </table>
        <table width="100%" dir="ltr">
          <tbody>
            <tr style="background-color: #507CD1; text-align: center">
              <td colspan="3" style="font: bold; color: white">Item2</td>
            </tr>
            <tr>
              <td style="height: 35px; font: bold; color: #507CD1;">type1</td>
            </tr>
            <tr>
              <td>description11</td>
            </tr>
            <tr>
              <td>description12</td>
            </tr>
            <tr>
              <td style="height: 35px; font: bold; color: #507CD1;">type2</td>
            </tr>
            <tr>
              <td>description21</td>
            </tr>
            <tr>
              <td>description22</td>
            </tr>
          </tbody>
        </table>
        <table width="100%" dir="ltr">
          <tbody>
            <tr style="background-color: #507CD1; text-align: center">
              <td colspan="3" style="font: bold; color: white">Item3</td>
            </tr>
            <tr>
              <td style="height: 35px; font: bold; color: #507CD1;">type1</td>
            </tr>
            <tr>
              <td>description11</td>
            </tr>
            <tr>
              <td>description12</td>
            </tr>
            <tr>
              <td style="height: 35px; font: bold; color: #507CD1;">type2</td>
            </tr>
            <tr>
              <td>description21</td>
            </tr>
            <tr>
              <td>description22</td>
            </tr>
          </tbody>
        </table>
        <table width="100%" dir="ltr">
          <tbody>
            <tr style="background-color: #507CD1; text-align: center">
              <td colspan="3" style="font: bold; color: white">Item4</td>
            </tr>
            <tr>
              <td style="height: 35px; font: bold; color: #507CD1;">type2</td>
            </tr>
            <tr>
              <td>description21</td>
            </tr>
            <tr>
              <td>description22</td>
            </tr>
            <tr>
              <td style="height: 35px; font: bold; color: #507CD1;">
              type3</td>
            </tr>
            <tr>
              <td>description31</td>
            </tr>
            <tr>
              <td>description32</td>
            </tr>
          </tbody>
        </table>
      </td>
    </tr>
  </tbody>
</table>

...which, when rendered in an HTML page, looks like this:

HTML table


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