XSLT 1.0 帮助条件循环

Question

我有一个要求，情况如下，

如果输入消息记录为空，则我必须在输出消息中填充一个空值
如果输入消息记录不为空，那么我必须循环

下面是两个不同的输入消息：

案例一输入：记录为空

 <ns0:Root xmlns:ns0="http://Correlation.Input1">
  <company>abc</company>
  <Token>1243</Token>
</ns0:Root>

案例二输入：多条记录

<ns0:Root xmlns:ns0="http://Correlation.Input1">
  <company>abc</company>
  <Token>1243</Token>
  <Record>
  <Name>John</Name>
  </Record>
    <Record>
  <Name>Larry</Name>
  </Record>
</ns0:Root>

案例 1 的期望输出：

<ns0:Root xmlns:ns0="http://Correlation.Output">
    <Company>abc</Company>
    <Token>1243</Token>
    <Record>
        <Name>Default</Name>
    </Record>
</ns0:Root>

案例 2 的期望输出：

<ns0:Root xmlns:ns0="http://Correlation.Output">
    <Company>abc</Company>
    <Token>1243</Token>
    <Record>
        <Name>John</Name>
    </Record>
    <Record>
        <Name>Larry</Name>
    </Record>
</ns0:Root>

XSLT 我写过：

<?xml version="1.0" encoding="UTF-16"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt" xmlns:var="http://schemas.microsoft.com/BizTalk/2003/var" exclude-result-prefixes="msxsl var s0 userCSharp" version="1.0" xmlns:s0="http://Correlation.Input1" xmlns:ns0="http://Correlation.Output" xmlns:userCSharp="http://schemas.microsoft.com/BizTalk/2003/userCSharp">
  <xsl:output omit-xml-declaration="yes" method="xml" version="1.0" />
  <xsl:template match="/">
    <xsl:apply-templates select="/s0:Root" />
  </xsl:template>
  <xsl:template match="/s0:Root">
    <xsl:variable name="var:v1" select="count(/s0:Root/Record)" />
    <xsl:variable name="var:v2" select="userCSharp:LogicalEq(string($var:v1) , &quot;0&quot;)" />
    <xsl:variable name="var:v4" select="userCSharp:LogicalNot(string($var:v2))" />
    <ns0:Root>
      <Company>
        <xsl:value-of select="company/text()" />
      </Company>
      <xsl:if test="Token">
        <Token>
          <xsl:value-of select="Token/text()" />
        </Token>
      </xsl:if>
      <Record>
        <xsl:if test="string($var:v2)='true'">
          <xsl:variable name="var:v3" select="&quot;Default&quot;" />
          <Name>
            <xsl:value-of select="$var:v3" />
          </Name>
        </xsl:if>
        <xsl:if test="string($var:v4)='true'">
          <xsl:variable name="var:v5" select="&quot;fgfdg&quot;" />
          <Name>
            <xsl:value-of select="$var:v5" />
          </Name>
        </xsl:if>
        <xsl:if test="string($var:v4)='true'">
          <xsl:variable name="var:v6" select="&quot;fgfdg&quot;" />
          <xsl:value-of select="$var:v6" />
        </xsl:if>
      </Record>
    </ns0:Root>
  </xsl:template>
  <msxsl:script language="C#" implements-prefix="userCSharp"><![CDATA[
public bool LogicalEq(string val1, string val2)
{
    bool ret = false;
    double d1 = 0;
    double d2 = 0;
    if (IsNumeric(val1, ref d1) && IsNumeric(val2, ref d2))
    {
        ret = d1 == d2;
    }
    else
    {
        ret = String.Compare(val1, val2, StringComparison.Ordinal) == 0;
    }
    return ret;
}


public bool LogicalNot(string val)
{
    return !ValToBool(val);
}


public bool IsNumeric(string val)
{
    if (val == null)
    {
        return false;
    }
    double d = 0;
    return Double.TryParse(val, System.Globalization.NumberStyles.AllowThousands | System.Globalization.NumberStyles.Float, System.Globalization.CultureInfo.InvariantCulture, out d);
}

public bool IsNumeric(string val, ref double d)
{
    if (val == null)
    {
        return false;
    }
    return Double.TryParse(val, System.Globalization.NumberStyles.AllowThousands | System.Globalization.NumberStyles.Float, System.Globalization.CultureInfo.InvariantCulture, out d);
}

public bool ValToBool(string val)
{
    if (val != null)
    {
        if (string.Compare(val, bool.TrueString, StringComparison.OrdinalIgnoreCase) == 0)
        {
            return true;
        }
        if (string.Compare(val, bool.FalseString, StringComparison.OrdinalIgnoreCase) == 0)
        {
            return false;
        }
        val = val.Trim();
        if (string.Compare(val, bool.TrueString, StringComparison.OrdinalIgnoreCase) == 0)
        {
            return true;
        }
        if (string.Compare(val, bool.FalseString, StringComparison.OrdinalIgnoreCase) == 0)
        {
            return false;
        }
        double d = 0;
        if (IsNumeric(val, ref d))
        {
            return (d > 0);
        }
    }
    return false;
}


]]></msxsl:script>
</xsl:stylesheet>

Answer 1

试一试。在调试器中单步执行它。让我知道问题。添加所需的格式。

<xsl:template match="ns0:Root ">
  <xsl:copy>
    <xsl:apply-templates select="node()"/>
    <xsl:if test="not(Record[1])">
      <xsl:element name="Record">
        <xsl:element name="Name">
          <xsl:value-of select="'Default'"/>
        </xsl:element>
      </xsl:element>
    </xsl:if>
  </xsl:copy>
</xsl:template>

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

<xsl:template match="Name">
  <xsl:copy>
    <xsl:value-of select="."/>
  </xsl:copy>
</xsl:template>

<xsl:template match="company">
  <xsl:copy>
    <xsl:value-of select="."/>
  </xsl:copy>
</xsl:template>

<xsl:template match="Token">
  <xsl:copy>
    <xsl:value-of select="."/>
  </xsl:copy>
</xsl:template>

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

Answer 2

你不能简单地做:

XSLT 1.0

<xsl:stylesheet version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:ns0="http://Correlation.Input1"
exclude-result-prefixes="ns0">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:strip-space elements="*"/>

<xsl:template match="ns0:Root">
    <ns0:Root xmlns:ns0="http://Correlation.Output">
        <xsl:apply-templates/>
        <xsl:if test="not(Record)">
            <Record>
                <Name>Default</Name>
            </Record>
        </xsl:if>
    </ns0:Root>
</xsl:template>

<xsl:template match="*">
    <xsl:element name="{local-name()}" >
        <xsl:apply-templates/>
    </xsl:element>
</xsl:template>

</xsl:stylesheet>

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xslt

xslt-1.0