使用simple transformation查找xml file内某个节点的attribute是否存在指定value

REPORT zdoc_trans_find_namespace.
DATA: lv_xml     TYPE string,
      lv_xml2    TYPE string,
      lv_result1 TYPE abap_bool,
      lv_result2 TYPE abap_bool.
START-OF-SELECTION.
  lv_xml = '<?xml version="1.0" encoding="UTF-8"?>' &&
   `<ds:datastoreItem xmlns:ds="http://schemas.openxmlformats.org/officeDocument/2006/customXml" ds:itemID="{0090FA0D-8DC2-1ED3-B783-90F3808D030B}">`
   && `<ds:schemaRefs><ds:schemaRef ds:uri="http://schemas.sap.com/crm"/></ds:schemaRefs></ds:datastoreItem>`.
  lv_xml2 = zcl_jerry_tool=>get_file_content_by_path( '\\TSHomeServer\TSHome$\i042416\Desktop\1.xml' ).
  CALL TRANSFORMATION zcontains_customxml
                   PARAMETERS my_namespace = 'http://schemas.sap.com/crm'
                   SOURCE XML lv_xml
                   RESULT result = lv_result1.
  CALL TRANSFORMATION zcontains_customxml
                  PARAMETERS my_namespace = 'http://schemas.sap.com/crm'
                  SOURCE XML lv_xml2
                  RESULT result = lv_result2.
  WRITE:/ 'Result1: ', lv_result1, ' Result2: ' , lv_result2.

<xsl:transform version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:sap="http://www.sap.com/sapxsl"
  xmlns:ds="http://schemas.openxmlformats.org/officeDocument/2006/customXml"
>
<xsl:param name="MY_NAMESPACE" sap:type="string" />
<xsl:strip-space elements="*"/>
<xsl:template match="/">
<asx:abap xmlns:asx="http://www.sap.com/abapxml" version="1.0">
  <asx:values>
      <xsl:apply-templates select="ds:datastoreItem/ds:schemaRefs/ds:schemaRef"/>
  </asx:values>
</asx:abap>
</xsl:template>
<xsl:template match="ds:datastoreItem/ds:schemaRefs/ds:schemaRef">
  <xsl:if test="@ds:uri = $MY_NAMESPACE">
  <RESULT>X</RESULT>
  </xsl:if>
</xsl:template>
</xsl:transform>