计算具有多个条件和精确属性的xml元素 [英] Count xml elements with multiple conditions and precise properties
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问题描述
我有以下代码（xml和xslt），我想用2个条件计算一些xml元素。
I have the following code (xml and xslt) and I would like to count some xml elements with 2 conditions.
XMLcode：
<home>
<place Value='place1'>
<property Name="Type" Value="house" />
<property Name="Context" Value="roof" />
<property Name="Color" Value="blue" />
</place>
<place Value='place2'>
<property Name="Type" Value="house" />
<property Name="Context" Value="kitchen" />
<property Name="Color" Value="red" />
</place>
<place Value='>
<property Name="Type" Value="house" />
<property Name="Context" Value="floor" />
<property Name="Color" Value="black" />
</place>
<place Value='place4'>
<property Name="Type" Value="house" />
<property Name="Context" Value="kitchen" />
<property Name="Color" Value="black" />
</place>
<place Value='place5'>
<property Name="Type" Value="apartment" />
<property Name="Context" Value="roof" />
<property Name="Color" Value="blue" />
</place>
<place Value='place6'>
<property Name="Type" Value="apartment" />
<property Name="Context" Value="kitchen" />
<property Name="Color" Value="red" />
</place>
</home>
xslt代码：
<html>
<body>
<table border="1" cellspacing="0" cellpadding="3">
<tr>
<td>Place</td>
<td>Type</td>
<td>Context</td>
<td>Color</td>
</tr>
<xsl:for-each select="place">
<tr>
<td><xsl:value-of select="@Value" /></td>
<td><xsl:value-of select="property[@Name='Type']/@Value" /></td>
<td><xsl:value-of select="property[@Name='Context']/@Value" /></td>
<td><xsl:value-of select="property[@Name='Color']/@Value" /></td>
</tr>
</xsl:for-each>
</table>
<table>
<tr>
<td>
Number of house:
</td>
<td>
<xsl:value-of select="count(place/property[@Name='Type' and @Value='house'])"/>
</td>
</tr>
<tr>
<td>
Number of kitchen:
</td>
<td>
<xsl:value-of select="count(place/property[@Name='Context' and @Value='kitchen'])"/>
</td>
</tr>
<tr>
<td>
Number of house with kitchen:
</td>
<td>
<xsl:value-of select="count(place/property[@Name='Type' and @Value='house'][@Name='Context' and @Value='kitchen'])"/>
</td>
</tr>
</table>
</body>
</html>
前两个计数工作正常（这些计数只有一个条件），但是第三个计数不起作用，因为有两个条件。有什么建议如何使其工作？
谢谢。
The first two counts are working correctly (there is just one condition on these counts) but the third count does not work because there are two conditions. Any suggestion how to make it work? Thanks.
推荐答案
如果要计算房屋且有厨房的地方，请使用此表达式：
Use this expression, if you want to count places which are "house" and have "kitchen":
count(home/place[property[@Name='Type' and @Value='house'] and property[@Name='Context' and @Value='kitchen']])
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