XPath - Examples with Operators
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Operator
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Description
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|
|
|
Computes two node-sets
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+
|
Addition
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-
|
Subtraction
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*
|
Multiplication
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div
|
Division
|
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=
|
Equal
|
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!=
|
Not equal
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<
|
Less than
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<=
|
Less than or equal to
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>
|
Greater than
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>=
|
Greater than or equal to
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or
|
or
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and
|
and
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mod
|
Modulus (division remainder)
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The part of XML document that we will use for the following examples is:
..........
<items>
<item>
<productID description="Product_1">CO11</productID>
<quantity>5</quantity>
<price>1.23</price>
<currency>USD</currency>
</item>
<item>
<productID description="Product_2">CO12</productID>
<quantity>7</quantity>
<price>2.34</price>
<currency>USD</currency>
</item>
<item>
<productID description="Product_3">CO13</productID>
<quantity>9</quantity>
<price>3.45</price>
<currency>USD</currency>
</item>
</items>
<total>53.58</total>
..........
1. //item/price | //item/quantity
Result:
..........
<items>
<item>
<productID description="Product_1">CO11</productID>
<quantity>5</quantity>
<price>1.23</price>
<currency>USD</currency>
</item>
<item>
<productID description="Product_2">CO12</productID>
<quantity>7</quantity>
<price>2.34</price>
<currency>USD</currency>
</item>
<item>
<productID description="Product_3">CO13</productID>
<quantity>9</quantity>
<price>3.45</price>
<currency>USD</currency>
</item>
</items>
<total>53.58</total>
..........
2. //item[position() > 1]
Result:
..........
<items>
<item>
<productID description="Product_1">CO11</productID>
<quantity>5</quantity>
<price>1.23</price>
<currency>USD</currency>
</item>
<item>
<productID description="Product_2">CO12</productID>
<quantity>7</quantity>
<price>2.34</price>
<currency>USD</currency>
</item>
<item>
<productID description="Product_3">CO13</productID>
<quantity>9</quantity>
<price>3.45</price>
<currency>USD</currency>
</item>
</items>
<total>53.58</total>
..........
3. //item[price <= 2]/price
Result:
..........
<items>
<item>
<productID description="Product_1">CO11</productID>
<quantity>5</quantity>
<price>1.23</price>
<currency>USD</currency>
</item>
<item>
<productID description="Product_2">CO12</productID>
<quantity>7</quantity>
<price>2.34</price>
<currency>USD</currency>
</item>
<item>
<productID description="Product_3">CO13</productID>
<quantity>9</quantity>
<price>3.45</price>
<currency>USD</currency>
</item>
</items>
<total>53.58</total>
..........
4. //item[quantity > 6/productID/@description]
..........
<items>
<item>
<productID description="Product_1">CO11</productID>
<quantity>5</quantity>
<price>1.23</price>
<currency>USD</currency>
</item>
<item>
<productIDdescription="Product_2">CO12</productID>
<quantity>7</quantity>
<price>2.34</price>
<currency>USD</currency>
</item>
<item>
<productIDdescription="Product_3">CO13</productID>
<quantity>9</quantity>
<price>3.45</price>
<currency>USD</currency>
</item>
</items>
<total>53.58</total>
..........
5. //item[price < 3 and quantity > 5]/productID/text()
Result:
..........
<items>
<item>
<productID description="Product_1">CO11</productID>
<quantity>5</quantity>
<price>1.23</price>
<currency>USD</currency>
</item>
<item>
<productID description="Product_2">CO12</productID>
<quantity>7</quantity>
<price>2.34</price>
<currency>USD</currency>
</item>
<item>
<productID description="Product_3">CO13</productID>
<quantity>9</quantity>
<price>3.45</price>
<currency>USD</currency>
</item>
</items>
<total>53.58</total>
..........
