xslt - 第一个前面的兄弟姐妹

Question

我正在尝试为以下 XML 中的每个 <OBX_Result> 节点获取第一个 <OBR_ObservationRequest>。当我使用previous-sibling:: 时，我总是为所有<OBX_Result> 节点获得第二个<OBR_ObservationRequest>。

我想为每个 OBX_Result 节点提取前面的 OBR_ObservationRequest/OBR_4_UniversalServiceIdent/CE_0_Identifier/text() 。请指教。

<OBR_ObservationRequest>
        <OBR_1_SetIdObservationRequest>1</OBR_1_SetIdObservationRequest>
        <OBR_2_PlacerOrder>
            <CM_0>M12998577</CM_0>
            <CM_1>MIC</CM_1>
        </OBR_2_PlacerOrder>
        <OBR_3_FillerOrder>
            <CM_0/>
            <CM_1>MIC</CM_1>
        </OBR_3_FillerOrder>
        <OBR_4_UniversalServiceIdent>
            <CE_0_Identifier/>
        </OBR_4_UniversalServiceIdent>
    </OBR_ObservationRequest>
    <OBR_ObservationRequest>
        <OBR_1_SetIdObservationRequest>2</OBR_1_SetIdObservationRequest>
        <OBR_2_PlacerOrder>
            <CM_0>M12998577</CM_0>
            <CM_1>MIC</CM_1>
        </OBR_2_PlacerOrder>
        <OBR_3_FillerOrder>
            <CM_0/>
            <CM_1>MIC</CM_1>
        </OBR_3_FillerOrder>
        <OBR_4_UniversalServiceIdent>
            <CE_0_Identifier>URINEC</CE_0_Identifier>
            <CE_1_Text>URINE CULTURE</CE_1_Text>
            <CE_2_NameOfCodingSystem>L</CE_2_NameOfCodingSystem>
        </OBR_4_UniversalServiceIdent>
        <OBR_5_Priority>R</OBR_5_Priority>
    </OBR_ObservationRequest>
    <OBX_Result>
        <OBX_1_SetIdObservationSimple>1</OBX_1_SetIdObservationSimple>
        <OBX_2_ValueType>TX</OBX_2_ValueType>
        <OBX_3_ObservationIdentifier>
            <CE_0_Identifier>RL</CE_0_Identifier>
        </OBX_3_ObservationIdentifier>
        <OBX_4_ObservationSubId>
            <CE_0_Identifier>1</CE_0_Identifier>
        </OBX_4_ObservationSubId>
        <OBX_5_ObservationResults>
            <CE_0_Identifier>PRELIMINARY REPORT 01/06/21</CE_0_Identifier>
        </OBX_5_ObservationResults>
        <OBX_6_Units/>
    </OBX_Result>
    <OBX_Result>
        <OBX_1_SetIdObservationSimple>2</OBX_1_SetIdObservationSimple>
        <OBX_2_ValueType>TX</OBX_2_ValueType>
        <OBX_3_ObservationIdentifier>
            <CE_0_Identifier>RL</CE_0_Identifier>
        </OBX_3_ObservationIdentifier>
        <OBX_4_ObservationSubId>
            <CE_0_Identifier>2</CE_0_Identifier>
        </OBX_4_ObservationSubId>
        <OBX_5_ObservationResults>
            <CE_0_Identifier>ORGANISM 1. ID AND SENSITIVITIES TO FOLLOW.</CE_0_Identifier>
        </OBX_5_ObservationResults>
        <OBX_6_Units/>
    </OBX_Result>
    <OBX_Result>
        <OBX_1_SetIdObservationSimple>3</OBX_1_SetIdObservationSimple>
        <OBX_2_ValueType>TX</OBX_2_ValueType>
        <OBX_3_ObservationIdentifier>
            <CE_0_Identifier>RL</CE_0_Identifier>
        </OBX_3_ObservationIdentifier>
        <OBX_4_ObservationSubId>
            <CE_0_Identifier>3</CE_0_Identifier>
        </OBX_4_ObservationSubId>
        <OBX_5_ObservationResults>
            <CE_0_Identifier>Saladero,Marie,01/06/21</CE_0_Identifier>
        </OBX_5_ObservationResults>
        <OBX_6_Units/>
    </OBX_Result>
    <OBR_ObservationRequest>
        <OBR_1_SetIdObservationRequest>3</OBR_1_SetIdObservationRequest>
        <OBR_2_PlacerOrder>
            <CM_0>M12998577</CM_0>
            <CM_1>MIC</CM_1>
        </OBR_2_PlacerOrder>
        <OBR_3_FillerOrder>
            <CM_0/>
            <CM_1>MIC</CM_1>
        </OBR_3_FillerOrder>
        <OBR_4_UniversalServiceIdent>
            <CE_0_Identifier>URINEC</CE_0_Identifier>
            <CE_1_Text>URINE CULTURE</CE_1_Text>
            <CE_2_NameOfCodingSystem>L</CE_2_NameOfCodingSystem>
        </OBR_4_UniversalServiceIdent>
        <OBR_5_Priority>R</OBR_5_Priority>
    </OBR_ObservationRequest>
    <OBX_Result>
        <OBX_1_SetIdObservationSimple>1</OBX_1_SetIdObservationSimple>
        <OBX_2_ValueType>TX</OBX_2_ValueType>
        <OBX_3_ObservationIdentifier>
            <CE_0_Identifier>OP1.1</CE_0_Identifier>
        </OBX_3_ObservationIdentifier>
        <OBX_4_ObservationSubId>
            <CE_0_Identifier>CCC</CE_0_Identifier>
        </OBX_4_ObservationSubId>
        <OBX_5_ObservationResults>
            <CE_0_Identifier>COLONY COUNT:</CE_0_Identifier>
        </OBX_5_ObservationResults>
        <OBX_6_Units>CFU/ML</OBX_6_Units>
    </OBX_Result>
    <OBX_Result>
        <OBX_1_SetIdObservationSimple>2</OBX_1_SetIdObservationSimple>
        <OBX_2_ValueType>TX</OBX_2_ValueType>
        <OBX_3_ObservationIdentifier>
            <CE_0_Identifier>OP1.2</CE_0_Identifier>
        </OBX_3_ObservationIdentifier>
        <OBX_4_ObservationSubId>
            <CE_0_Identifier>CCC</CE_0_Identifier>
        </OBX_4_ObservationSubId>
        <OBX_5_ObservationResults>
            <CE_0_Identifier>&gt;100,000 CFU/ML</CE_0_Identifier>
        </OBX_5_ObservationResults>
        <OBX_6_Units>CFU/ML</OBX_6_Units>
    </OBX_Result>
    <OBR_ObservationRequest>
        <OBR_1_SetIdObservationRequest>4</OBR_1_SetIdObservationRequest>
        <OBR_2_PlacerOrder>
            <CM_0>M12998577</CM_0>
            <CM_1>MIC</CM_1>
        </OBR_2_PlacerOrder>
        <OBR_3_FillerOrder>
            <CM_0/>
            <CM_1>MIC</CM_1>
        </OBR_3_FillerOrder>
        <OBR_4_UniversalServiceIdent>
            <CE_0_Identifier>NUC61</CE_0_Identifier>
            <CE_1_Text>NEG URINE COMBO 61</CE_1_Text>
            <CE_2_NameOfCodingSystem>L</CE_2_NameOfCodingSystem>
        </OBR_4_UniversalServiceIdent>
        <OBR_5_Priority>R</OBR_5_Priority>
    </OBR_ObservationRequest>
    <OBX_Result>
        <OBX_1_SetIdObservationSimple>1</OBX_1_SetIdObservationSimple>
        <OBX_2_ValueType>ST</OBX_2_ValueType>
        <OBX_3_ObservationIdentifier>
            <CE_0_Identifier>ANT</CE_0_Identifier>
        </OBX_3_ObservationIdentifier>
        <OBX_4_ObservationSubId>
            <CE_0_Identifier>CAX</CE_0_Identifier>
            <CE_1_Text>CEFTRIAXONE</CE_1_Text>
            <CE_2_NameOfCodingSystem>L</CE_2_NameOfCodingSystem>
        </OBX_4_ObservationSubId>
        <OBX_5_ObservationResults>
            <CE_0_Identifier>&gt;32</CE_0_Identifier>
        </OBX_5_ObservationResults>
        <OBX_6_Units/>
    </OBX_Result>

标签： xslt