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| <head> |
| <meta charset="utf-8" /> |
| <title>EvaluateXQuery</title> |
| <link rel="stylesheet" href="../../../../../css/component-usage.css" |
| type="text/css" /> |
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| |
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| <body> |
| |
| <!-- Processor Documentation ================================================== --> |
| |
| |
| <p> |
| <strong>Examples:</strong> |
| </p> |
| |
| <p>This processor produces one attribute or FlowFile per |
| XQueryResult. If only one attribute or FlowFile is desired, the |
| following examples demonstrate how this can be achieved using the |
| XQuery language. The examples below reference the following sample |
| XML:</p> |
| |
| <pre> |
| <code> |
| <?xml version="1.0" encoding="UTF-8"?> |
| <?xml-stylesheet type="text/xsl" href="foo.xsl"?> |
| <ns:fruitbasket xmlns:ns="http://namespace/1"> |
| <fruit taste="crisp"> |
| <!-- Apples are my favorite--> |
| <name>apple</name> |
| <color>red</color> |
| </fruit> |
| <fruit> |
| <name>apple</name> |
| <color>green</color> |
| </fruit> |
| <fruit> |
| <name>banana</name> |
| <color>yellow</color> |
| </fruit> |
| <fruit taste="sweet"> |
| <name>orange</name> |
| <color>orange</color> |
| </fruit> |
| <fruit> |
| <name>blueberry</name> |
| <color>blue</color> |
| </fruit> |
| <fruit taste="tart"> |
| <name>raspberry</name> |
| <color>red</color> |
| </fruit> |
| <fruit> |
| <name>none</name> |
| <color/> |
| </fruit> |
| </ns:fruitbasket> |
| </code> |
| </pre> |
| |
| <p> |
| <ul> |
| <li>XQuery to return all "fruit" nodes individually (7 Results): |
| <ul> |
| <li>//fruit</li> |
| </ul> |
| </li> |
| <li>XQuery to return only the first "fruit" node (1 Result): |
| <ul> |
| <li>//fruit[1]</li> |
| </ul> |
| </li> |
| <li>XQuery to return only the last "fruit" node (1 Result): |
| <ul> |
| <li>//fruit[count(//fruit)]</li> |
| </ul> |
| </li> |
| <li>XQuery to return all "fruit" nodes, wrapped in a "basket" tag |
| (1 Result): |
| <ul> |
| <li><basket>{//fruit}</basket></li> |
| </ul> |
| </li> |
| <li>XQuery to return all "fruit" names individually (7 Results): |
| <ul> |
| <li>//fruit/text()</li> |
| </ul> |
| </li> |
| <li>XQuery to return only the first "fruit" name (1 Result): |
| <ul> |
| <li>//fruit[1]/text()</li> |
| </ul> |
| </li> |
| <li>XQuery to return only the last "fruit" name (1 Result): |
| <ul> |
| <li>//fruit[count(//fruit)]/text()</li> |
| </ul> |
| </li> |
| <li>XQuery to return all "fruit" names as a comma separated list |
| (1 Result): |
| <ul> |
| <li>string-join((for $x in //fruit return $x/name/text()), ', |
| ')</li> |
| </ul> |
| </li> |
| <li>XQuery to return all "fruit" colors and names as a comma |
| separated list (1 Result): |
| <ul> |
| <li>string-join((for $y in (for $x in //fruit return |
| string-join(($x/color/text() , $x/name/text()), ' ')) return $y), |
| ', ')</li> |
| </ul> |
| </li> |
| <li>XQuery to return all "fruit" colors and names as a comma |
| separated list (1 Result): |
| <ul> |
| <li>string-join((for $y in (for $x in //fruit return |
| string-join(($x/color/text() , $x/name/text()), ' ')) return $y), |
| ', ')</li> |
| </ul> |
| </li> |
| <li>XQuery to return all "fruit" colors and names as a new line |
| separated list (1 Result): |
| <ul> |
| <li>string-join((for $y in (for $x in //fruit return |
| string-join(($x/color/text() , $x/name/text()), ' ')) return $y), |
| '\n')</li> |
| </ul> |
| </li> |
| </ul> |
| </body> |
| </html> |
