感谢您花时间看我的问题。
我有一个输入结构(如下),其中每一行代表从一个位置项到另一个位置项的移动。所以每一行都有一个从位置和一个到位置。
目标是嵌套的 xml,其中位置对象具有一些标题和项目级别信息。我需要从所有行中选择不同的位置并映射它们的项目级别详细信息。
输入和所需转换输出的示例。
我有一个平面数据库提取 xml,看起来像
<Data>
<row>
<Movement>Home to Work</Movement>
<COMP_ID_F>HID001</COMP_ID_F>
<ITEM_ID_F>1</ITEM_ID_F>
<FIELDS_F> More home related data </FIELDS_F>
<COMP_ID_T>WID001</COMP_ID_T>
<ITEM_ID_T>2</ITEM_ID_T>
<FIELDS_T> More work related data</FIELDS_T>
</row>
<row>
<Movement>Home to Work</Movement>
<COMP_ID_F>HID001</COMP_ID_F>
<ITEM_ID_F>1</ITEM_ID_F>
<FIELDS_F> More home related data </FIELDS_F>
<COMP_ID_T>WID001</COMP_ID_T>
<ITEM_ID_T>2</ITEM_ID_T>
<FIELDS_T> More work related data</FIELDS_T>
</row>
<row>
<Movement>Home to Work</Movement>
<COMP_ID_F>HID001</COMP_ID_F>
<ITEM_ID_F>1</ITEM_ID_F>
<FIELDS_F> More home related data </FIELDS_F>
<COMP_ID_T>WID001</COMP_ID_T>
<ITEM_ID_T>3</ITEM_ID_T>
<FIELDS_T> More work related data</FIELDS_T>
</row>
<row>
<Movement>Home to Work</Movement>
<COMP_ID_F>HID001</COMP_ID_F>
<ITEM_ID_F>2</ITEM_ID_F>
<FIELDS_F> More home related data </FIELDS_F>
<COMP_ID_T>WID001</COMP_ID_T>
<ITEM_ID_T>4</ITEM_ID_T>
<FIELDS_T> More work related data</FIELDS_T>
</row>
<row>
<Movement>Home to Work</Movement>
<COMP_ID_F>HID002</COMP_ID_F>
<ITEM_ID_F>1</ITEM_ID_F>
<FIELDS_F> More home related data </FIELDS_F>
<COMP_ID_T>WID001</COMP_ID_T>
<ITEM_ID_T>5</ITEM_ID_T>
<FIELDS_T> More work related data</FIELDS_T>
</row>
<row>
<Movement>Home to Work</Movement>
<COMP_ID_F>HID002</COMP_ID_F>
<ITEM_ID_F>2</ITEM_ID_F>
<FIELDS_F> More home related data </FIELDS_F>
<COMP_ID_T>WID002</COMP_ID_T>
<ITEM_ID_T>1</ITEM_ID_T>
<FIELDS_T> More work related data</FIELDS_T>
</row>
</Data>
转换后的输出需要
<Target>
<Events>
<Movement>Home to Work</Movement>
<Movement>Home to Work</Movement>
<Movement>Home to Work</Movement>
<Movement>Home to Work</Movement>
<Movement>Home to Work</Movement>
<Movement>Home to Work</Movement>
</Events>
<Locations>
<Home>
<id>HID001</id>
<item>
<id>1</id>
</item>
<item>
<id>2</id>
</item>
</Home>
<Home>
<id>HID002</id>
<item>
<id>1</id>
</item>
<item>
<id>2</id>
</item>
</Home>
<Work>
<id>WID001</id>
<item>
<id>1</id>
</item>
<item>
<id>2</id>
</item>
<item>
<id>3</id>
</item>
<item>
<id>4</id>
</item>
<item>
<id>5</id>
</item>
</Work>
<Work>
<id>WID002</id>
<item>
<id>1</id>
</item>
</Work>
</Locations>
</Target>
现在我已经尝试了许多使用 Keys 的选项并生成 id。所以请看一下并指出我哪里出错了。或者如果有更好的方法来实现这个输出。
我创建了 4 个键
<xsl:key name="fcreg" match="row" use="COMP_ID_F"/>
<xsl:key name="fcireg" match="row" use="ITEM_ID_F"/>
<xsl:key name="tcreg" match="row" use="COMP_ID_T"/>
<xsl:key name="tcireg" match="row" use="ITEM_ID_T"/>
我的 XSLT 执行以下逻辑
<Target>
<!--transform all events-->
<Events>
<xsl:for-each select="Data/row">
<!-- get movement-->
</xsl:for-each>
</Events>
<!--transform all from locations-->
<xsl:for-each select="Data/row[generate-id() = generate-id(key('fcreg',COMP_ID_F)[1])]">
<xsl:for-each select="key('fcreg',COMP_ID_F)[generate-id() = generate-id(key('fcireg', ITEM_ID_F)[COMP_ID_F=current()/COMP_ID_F][1])]">
<xsl:variable name="items" select="key('fcreg', COMP_ID_F)[ITEM_ID_F = current()/ITEM_ID_F]"/>
<home>
<xsl:value-of select="COMP_ID_F"/>
<xsl:for-each select="$items">
<item>
<id>
<xsl:value-of select="ITEM_ID_F"/>
</id>
</item>
</xsl:for-each>
</home>
</xsl:for-each>
</xsl:for-each>
<!--transform all to locations-->
<xsl:for-each select="Data/row[generate-id() = generate-id(key('tcreg',COMP_ID_T)[1])]">
<xsl:for-each select="key('tcreg',COMP_ID_T)[generate-id() = generate-id(key('tcireg', ITEM_ID_T)[COMP_ID_T=current()/COMP_ID_T][1])]">
<xsl:variable name="items" select="key('tcreg', COMP_ID_T)[ITEM_ID_T = current()/ITEM_ID_T]"/>
<work>
<xsl:value-of select="COMP_ID_T"/>
<xsl:for-each select="$items">
<item>
<id>
<xsl:value-of select="ITEM_ID_T"/>
</id>
</item>
</xsl:for-each>
</work>
</xsl:for-each>
</xsl:for-each>
</Target>
我哪里错了?任何帮助是极大的赞赏。
提前致谢。