Xml XSL转换无法使用Solr中的XPathEntityProcessor返回值

我正在尝试将XSL选项与XpathEntityProcessor一起使用，以从xml转换中选择数据。配置运行时不会出错，但不会返回任何值。在这一点上，只要让它为下面的IUPAC实体的一个单词编制索引就可以了。所有其他实体都按预期工作。我想使用XSL选项，这样我就可以完全访问XPATH，以便做出特定的选择。数据杂乱无章，需要使用javascript或正则表达式进行进一步处理

我的实体看起来像这样

    <document>
    <!-- this outer processor generates a list of files satisfying the conditions
         specified in the attributes -->
    <entity 
        name="f" 
        processor="FileListEntityProcessor"
        fileName=".*xml"
        newerThan="'NOW-30YEARS'"
        recursive="true"
        rootEntity="false"
        dataSource="null"
        baseDir="C:\DrugLabels\Prescription\Test"
        transformer="RegexTransformer,TemplateTransformer">

    <!-- this strips the file extension and sets the id = the file name -->     
            <field column="file" regex="^(.*)/|.xml" replaceWith="$1" name="id"/>


    <!-- this processor extracts content using Xpath from each file found -->

        <entity 
        name="DrugLabel" 
        processor="XPathEntityProcessor"
        forEach="/document"
        url="${f.fileAbsolutePath}">

            <entity 
            name="document_title" 
            processor="XPathEntityProcessor"
            transformer="script:lineToTitleCase"
            forEach="/document"
            url="${f.fileAbsolutePath}">

                <field column="title" xpath="/document/title"/>

            </entity>

            <entity 
            name="ingredients" 
            processor="XPathEntityProcessor"
            transformer="script:listToTitleCase"
            forEach="/document"
            url="${f.fileAbsolutePath}">

                <field column="generic_medicine" xpath="/document/component/structuredBody/component/section/subject/manufacturedProduct/manufacturedProduct/asEntityWithGeneric/genericMedicine/name"/></entity>

            </entity>

            <entity 
            name="IUPAC" 
            processor="XPathEntityProcessor"
            transformer="RegexTransformer, script:debug"
            forEach="/add"
            url="${f.fileAbsolutePath}"
            xsl="C:\solr-4.3.1\example\solr\DrugLabels\conf\section-description-transform.xsl">

                <field column="chemical_name" xpath="/add/doc/field/@chemical_name" flatten="true"/>

            </entity>
        </entity>                       
    </entity>
</document>

以及输出：

"chemical_name": [
    "value: function toString() {/*\njava.lang.String toString()\n*/}\n"

这可能也有帮助

function debug(row) {
    var r = row.get('chemical_name').toString;
    r = 'value: ' + r;
    row.put('chemical_name', r);
    return row;
}

"chemical_name": [
    "value: function toString() {/*\njava.lang.String toString()\n*/}\n"

<xsl:template match="/">
    <add>
        <xsl:for-each select="document/entity">
            <doc>
                <xsl:for-each select=".//field">
                    <field name="{@column}"><xsl:value-of select="@xpath"/></field>
                </xsl:for-each>
            </doc>
        </xsl:for-each>
    </add>
</xsl:template>