XSLT 使用 XSLT 数组过滤结果 [英] XSLT Filter result using XSLT array
本文介绍了XSLT 使用 XSLT 数组过滤结果的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我是 XSLT 的初学者.
I am a beginner in XSLT.
以下是我收到的源 XML.Request 标签包含用于过滤 Result 标签的 FlightId.
Below is source XML which i receive. Request tag constains the FlightId which is being used to filter the Result tag.
源 XML:
<Response>
<Request>
<RequestedFlights>
<FlightId>2121</FlightId>
<FlightId>2584</FlightId>
</RequestedFlights>
</Request>
<Result>
<Flights>
<Flight>
<Segments>
<Segment>
<Id>1</Id>
<FlightNumber>2121</FlightNumber>
</Segment>
<Segment>
<Id>2</Id>
<FlightNumber>1121</FlightNumber>
</Segment>
</Segments>
</Flight>
<Flight>
<Segments>
<Segment>
<Id>3</Id>
<FlightNumber>2121</FlightNumber>
</Segment>
<Segment>
<Id>4</Id>
<FlightNumber>2584</FlightNumber>
</Segment>
</Segments>
</Flight>
<Flight>
<Segments>
<Segment>
<Id>5</Id>
<FlightNumber>2121</FlightNumber>
</Segment>
<Segment>
<Id>6</Id>
<FlightNumber>2584</FlightNumber>
</Segment>
<Segment>
<Id>7</Id>
<FlightNumber>2023</FlightNumber>
</Segment>
</Segments>
</Flight>
</Flights>
</Result>
</Response>
XSLT:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output method="xml" indent="yes" />
<xsl:variable name="ReqFlights" select="//Request/RequestedFlights/FlightId" />
<xsl:variable name="FilterFlights" select="//Result/Flights/Flight[Segments/Segment/FlightNumber=$ReqFlights]"/>
<xsl:template match="Response">
<FilterResult>
<ResultCount>
<xsl:value-of select="count($FilterFlights)"/>
</ResultCount>
<xsl:copy>
<xsl:copy-of select="$FilterFlights"/>
</xsl:copy>
</FilterResult>
</xsl:template>
</xsl:stylesheet>
我使用上面的 XSLT 收到以下输出.
I received below output using above XSLT.
输出:
<FilterResult>
<ResultCount>3</ResultCount>
<Response>
<Flight>
<Segments>
<Segment>
<Id>1</Id>
<FlightNumber>2121</FlightNumber>
</Segment>
<Segment>
<Id>2</Id>
<FlightNumber>1121</FlightNumber>
</Segment>
</Segments>
</Flight>
<Flight>
<Segments>
<Segment>
<Id>3</Id>
<FlightNumber>2121</FlightNumber>
</Segment>
<Segment>
<Id>4</Id>
<FlightNumber>2584</FlightNumber>
</Segment>
</Segments>
</Flight>
<Flight>
<Segments>
<Segment>
<Id>5</Id>
<FlightNumber>2121</FlightNumber>
</Segment>
<Segment>
<Id>6</Id>
<FlightNumber>2584</FlightNumber>
</Segment>
<Segment>
<Id>7</Id>
<FlightNumber>2023</FlightNumber>
</Segment>
</Segments>
</Flight>
</Response>
</FilterResult>
我想收到以下输出.
预期输出:
<FilterResult>
<ResultCount>1</ResultCount>
<Response>
<Flight>
<Segments>
<Segment>
<Id>3</Id>
<FlightNumber>2121</FlightNumber>
</Segment>
<Segment>
<Id>4</Id>
<FlightNumber>2584</FlightNumber>
</Segment>
</Segments>
</Flight>
</Response>
</FilterResult>
请帮帮我.我应该如何使用数组来过滤响应并获得预期的输出.谢谢.
Please help me. How should i use the array to filter the response and get expected output. Thanks.
推荐答案
使用:
/*/Result/*/Flight
[count(*/*)=count(/*/Request/*/FlightId)
and
not(*/*/FlightNumber[not(. = /*/Request/*/FlightId)])
]
这是完整的转换:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output omit-xml-declaration="yes" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="/">
<xsl:variable name="vHits" select=
"/*/Result/*/Flight
[count(*/*)=count(/*/Request/*/FlightId)
and
not(*/*/FlightNumber[not(. = /*/Request/*/FlightId)])
]"/>
<FilterResult>
<ResultCount><xsl:value-of select="count($vHits)"/></ResultCount>
<Response>
<xsl:copy-of select="$vHits"/>
</Response>
</FilterResult>
</xsl:template>
</xsl:stylesheet>
当此转换应用于提供的 XML 文档时:
<Response>
<Request>
<RequestedFlights>
<FlightId>2121</FlightId>
<FlightId>2584</FlightId>
</RequestedFlights>
</Request>
<Result>
<Flights>
<Flight>
<Segments>
<Segment>
<Id>1</Id>
<FlightNumber>2121</FlightNumber>
</Segment>
<Segment>
<Id>2</Id>
<FlightNumber>1121</FlightNumber>
</Segment>
</Segments>
</Flight>
<Flight>
<Segments>
<Segment>
<Id>3</Id>
<FlightNumber>2121</FlightNumber>
</Segment>
<Segment>
<Id>4</Id>
<FlightNumber>2584</FlightNumber>
</Segment>
</Segments>
</Flight>
<Flight>
<Segments>
<Segment>
<Id>5</Id>
<FlightNumber>2121</FlightNumber>
</Segment>
<Segment>
<Id>6</Id>
<FlightNumber>2584</FlightNumber>
</Segment>
<Segment>
<Id>7</Id>
<FlightNumber>2023</FlightNumber>
</Segment>
</Segments>
</Flight>
</Flights>
</Result>
</Response>
产生了想要的、正确的结果:
<FilterResult>
<ResultCount>1</ResultCount>
<Response>
<Flight>
<Segments>
<Segment>
<Id>3</Id>
<FlightNumber>2121</FlightNumber>
</Segment>
<Segment>
<Id>4</Id>
<FlightNumber>2584</FlightNumber>
</Segment>
</Segments>
</Flight>
</Response>
</FilterResult>
说明:
正确使用双重否定法则.
Proper use of the double negation law.
这篇关于XSLT 使用 XSLT 数组过滤结果的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
