xquery labs basic reporting date: 9/29/2008 dan mccreary president dan mccreary & associates...

XQuery LabsBasic ReportingDate: 9/29/2008

Dan McCrearyPresidentDan McCreary & [email protected](952) 931-9198

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Metadata Solutions

Copyright 2008 Dan McCreary & Associates 2

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Overview

• Hello World• XML Report• HTML List• Limiting Results with subsequence• HTML Table• HTML Table with Header• HTML Table with CSS• HTML Table with Row Count• HTML Table with Alternate Rows Shaded• HTML Table with Links• Getting Next N Rows


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Term Manager Home Page

/db/apps/terms/index.xhtml


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The following lines may be omitted…

xquery version "1.0";declare option exist:serialize "method=xhtml media-

type=text/html omit-xml-declaration=yes indent=yes";

let $collection := ‘/db/apps/terms/data’

or

let $get-uri := request:get-uri()let $app-base := substring-before(substring-after($get-

uri, '/exist/rest'), '/views/')let $collection := concat($app-base, '/data')


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Basic Structure of XQuery

xquery version "1.0";

let $collection := ‘/db/apps/terms/data’

return<terms>{ for $term in collection($collection)/term return $term }</terms>


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HTML Ordered List…return<html> <head> <title>Terms</title> </head> <body> <ol>{ for $term in collection($collection)/term return <li>{$term/name/text()}</li> }</ol> </body></html>


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Returning Just the First 30 Terms<html> <head> <title>Terms</title> </head> <body> <ol>{ for $term in subsequence(collection($collection)/term, 1, 30) return <li>{$term/name/text()} - {$term/definition[1]/text()}</li> }</ol> </body></html>

startcount


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HTML Table Output <body> <h1>Terms and Defintions</h1> <table border="1"> <thead> <th>Term</th> <th>Definition</th> </thead> <tbody>{ for $term in subsequence(collection($collection)/term, 1, 30) return <tr> <td>{$term/name/text()}</td> <td>{$term/definition[1]/text()}</td> </tr> }</tbody> </table> </body>


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Order and First Definition<tbody>{ for $term in subsequence(collection($collection)/term, 1, 30) order by $term/name/text() return <tr> <td>{$term/name/text()}</td> <td>{$term/definition[1]/text()}</td> </tr>}</tbody>

only return the first definition


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Using Cascading Style Sheetsreturn<html> <head> <title>HTML Table</title> <link rel="stylesheet" href="06-table.css" type="text/css"/> </head> <body> <div id="wrapper"> <div id="banner"> <img src="../hobanner.gif" width="900" height="130" alt="Office of the

Historian banner"/> </div> <div class="content"> <h4>Terms and Defintions</h4> <table>


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Adding “at $count” to Query

<tbody>{ for $term at $count in subsequence(collection($collection)/term, 1, 30) return <tr> <td>{$count}</td> <td>{$term/name/text()}</td> <td>{$term/definition[1]/text()}</td> </tr>}</tbody>


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Conditional Styling

<tbody>{ for $term at $count in

subsequence(collection($collection)/term, 1, 30) return <tr> {if ($count mod 2) then (attribute {'bgcolor'} {'Lavender'})

else ()} <td>{$count}</td> <td>{$term/name/text()}</td> <td>{$term/definition[1]/text()}</td> </tr>}</tbody>


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Adding a Link to the Name <tbody>{ for $term at $count in subsequence(collection($collection)/term, 1, 30) return <tr> {if ($count mod 2) then (attribute {'bgcolor'} {'Lavender'}) else ()} <td><a href="view-item.xq?id={$term/name/@id}">{$term/name/text()}

</a> </td> <td>{$term/definition[1]/text()}</td> </tr>}</tbody>

This will allow the use to click on a term name and jumpdirectly to the item viewer for the terms.


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Getting N More Recordslet $start := xs:integer(request:get-parameter("start", "1"))let $records := xs:integer(request:get-parameter("records", "20"))let $query-base := request:get-url()… for $term at $count in subsequence(collection($collection)/term, $start, $records) return… <input type="button" onClick="parent.location='{$query-base}?start={$start -

$records}&records={$records}'" value="Previous"/> <input type="button" onClick="parent.location='{$query-base}?start={$start +

$records}&records={$records}'" value="Next"/>


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View Item

let $id := request:get-parameter('id', '')… <h1>View Item</h1> {let $item := collection($collection)/term[name/@id = $id] return <table border="1"> <tr><th>ID:</th><td>{string($item/name/@id)}</td></tr> <tr><th>Term:</th><td>{$item/name/text()}</td></tr> { for $def at $count in $item/definition return <tr> <td>Definition {$count}:</td> <td>{$def/text()} volume={string($def/@volume)}</td> </tr> } </table> }

/db/apps/terms/views/view-item.xq?id=123


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eXist Keyword Extensions

• All Keywords selects context nodes containing ALL of the keywords in the right-hand argument in any order. The default tokenizer is used to split the right-hand argument into single tokens, i.e. any punctuation or white spaces are used to separate the keywords and, after which, are omitted. Note also that wildcards are allowed, and keyword comparison is NOT case-sensitive.

• Any Keywords Similar to above, this operator selects context nodes containing ANY of the keywords in the right-hand argument.

&=

|=


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Search

(: the search query string :)let $q := request:get-parameter('q', "")

(: put the search results into memory :)let $search-results := collection($collection)//term[*/text() &= $q]let $count := count($search-results)

/db/apps/terms/search/search.xq?q=test Match All Keywords

All sub elements of term


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Search Results List

<ol>{

for $term in $search-results

let $id := $term/name/@id

let $term-name := $term/name/text()

order by upper-case($term-name)

return

<li>

<a href="../views/view-item.xq?id={$id}">{$term-name}</a>

</li>

}</ol>


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Search.xhtml <xf:model> <xf:instance xmlns=""> <data> <q/> </data> </xf:instance> <xf:submission id="search" method="get" action="search.xq" replace="all"/>… <xf:input ref="q" id="search-input" incremental="true"> <xf:label>Search string:</xf:label> <xf:action ev:event="DOMActivate"> <xf:send submission="search"/> </xf:action></xf:input>

<xf:submit submission="search"> <xf:label>Search</xf:label></xf:submit>


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Search Results


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Thank You!

Please contact me for more information:• Native XML Databases• Metadata Management• Metadata Registries• Service Oriented Architectures• Business Intelligence and Data Warehouse• Semantic Web

Dan McCreary, PresidentDan McCreary & Associates

Metadata Strategy [email protected]

(952) 931-9198

xquery labs basic reporting date: 9/29/2008 dan mccreary president dan mccreary & associates...

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