November 3, 2009
Harvard University
Division of Continuing Education
Extension School
Course Web Site: http://cscie153.dce.harvard.edu/
Instructor email:
david_heitmeyer@harvard.edu
Course staff email:
cscie153@dce.harvard.edu
Lecture Feedback. Please take a couple of minutes to answer three questions about the lecture. The submissions are seen only by the teaching staff and providing your name is optional.
From XQuery 1.0: An XML Query Language:
As increasing amounts of information are stored, exchanged, and presented using XML, the ability to intelligently query XML data sources becomes increasingly important. One of the great strengths of XML is its flexibility in representing many different kinds of information from diverse sources. To exploit this flexibility, an XML query language must provide features for retrieving and interpreting information from these diverse sources.
From http://www.w3.org/standards/xml/query:
XQuery is a standardized language for combining documents, databases, Web pages and almost anything else. It is very widely implemented. It is powerful and easy to learn.
XQuery is replacing proprietary middleware languages and Web Application development languages. XQuery is replacing complex Java or C++ programs with a few lines of code. XQuery is simpler to work with and easier to maintain than many other alternatives.
It is used as a back end for implementing Web sites, integrating corporate data stores in the enterprise, in the XRX architecture (XForms, REST and XQuery), as well as for large publishing projects, for data mining, and for academic research. It can run on large servers and on mobile devices, as part of commercial software and as open source.
| XQuery | XSLT |
|---|---|
|
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FLWOR
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Flower photo used with permission, http://incompetech.com/gallimaufry/
for $course in /fas_courses/course
let $title := $course/title
let $cat_num := $course/@cat_num
where contains($course, 'molecular')
order by $title
return <course cat_num="{$cat_num}">{$title}</course>
for, let, let, where, order by, return
for $course in /fas_courses/course
let $title := $course/title
let $cat_num := $course/@cat_num
where contains($course, 'molecular')
order by $title
return <course cat_num="{$cat_num}">{$title}</course>and an equivalent, but different, XQuery:
for $course in /fas_courses/course[contains(.,'molecular')]
order by $course/title
return <course cat_num="{$course/@cat_num}">{$course/title}</course>
From the eXist website:
eXist-db is an open source database management system built using XML technology. It stores XML data according to the XML data model and features efficient, index-based XQuery processing.
eXist-db supports many web technology standards making it an excellent platform for developing web based applications:
The 1.4 version adds a new full text index based on Apache Lucene, a lightweight URL rewriting and MVC framework as well as support for XProc. Most important, the XQuery engine has seen a major redesign, resulting in improved performance.
eXist-db is highly compliant with the XQuery standard (current XQTS score is 99.4%). The query engine is extensible and features a large collection of XQuery Function Modules.
eXist-db provides a powerful environment for the development of web applications based on XQuery and related standards. Entire web applications can be written in XQuery, using XSLT, XHTML, CSS and Javascript (for AJAX functionality). XQuery server pages can be executed from the filesystem or stored in the database.
To demonstrate the ability to search across multiple documents, I split the "courses.xml" file into one file per course, and loaded these into an eXist collection:
XQuery to count courses:
for $c in
count(distinct-values(collection('/db/courses')/fas_courses/course/@cat_num))
return concat("Number of Courses: ",$c)XQuery to count departments:
for $d in
count(distinct-values(collection('/db/courses')/fas_courses/course/department/@code))
return concat("Number of Departments: ",$d)Execute this on the "courses" collection in eXist:
Select all courses.
for $course in
collection('/db/courses')/fas_courses/course
order by $course/department/dept_short_name,
$course/course_number/num_int,
$course/course_number/num_char
return $course
for $course in /fas_courses/course
where contains($course, 'molecular')
order by $course/title
return <course cat_num="{$course/@cat_num}"/>
for $dept
in distinct-values(collection('/db/courses')/fas_courses/course/department/@code)
let $deptnode := collection('/db/courses')/fas_courses/course/department[@code = $dept][1]
order by $deptnode/dept_short_name
return $deptnode
<departments>
{
for $dept in
distinct-values(collection('/db/courses')/fas_courses/course/department/@code)
let $courses := collection('/db/courses')/fas_courses/course[@offered eq 'Y' and department/@code eq $dept]
let $numcourses := count($courses)
order by $numcourses descending
return <dept code="{$dept}" number_of_courses="{$numcourses}"/>
}
</departments>
Working with multiple documents.
Course:
Add "buildings.xml" to the courses collection. This is another way to solve the problem of merging the building location data into the courses data.
for $course in collection('/db/courses')/fas_courses/course[course_level/@code eq 'P'][meeting_locations/location/@building]
for $b in collection('/db/courses')/buildings/building
let $cb := $course/meeting_locations/location/@building
where $cb = $b/name/text()
order by $cb[1]
return
<course><title>{$course/title/text()}</title>{$b}</course>
update insert <item name="chocolate peanut butter">Chocolate Peanut Butter</item>
into collection('/db/testing')/choices/ice_cream
update replace collection('/db/testing')/choices/colors/item[@value='black']
with <item value="noir">Noir</item>
xquery version "1.0";
declare namespace request="http://exist-db.org/xquery/request";
declare namespace util="http://exist-db.org/xquery/util";
<fas_courses>
{
for $c in
collection('/db/courses')/fas_courses/course
[@acad_year = 2009]
let $dept := request:get-parameter("department", "any")
let $cg := request:get-parameter("course_group", "any")
where ($c/department/@code = $dept or $dept = 'any')
and ($c/course_group/@code = $cg or $cg = 'any')
return $c
}
</fas_courses>
| XQuery | XSLT |
|---|---|
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From XForms 1.1:
XForms is an XML application that represents the next generation of forms for the Web. XForms is not a free-standing document type, but is intended to be integrated into other markup languages, such as XHTML, ODF or SVG. An XForms-based web form gathers and processes XML data using an architecture that separates presentation, purpose and content. The underlying data of a form is organized into instances of data schema (though formal schema definitions are not required). An XForm allows processing of data to occur using three mechanisms:
| Function | HTML/XHTML Forms | XForms |
|---|---|---|
| Validation and Calculation | Heavy reliance on scripting languages, both client-side (Javascript) and server-side. | XPath, W3C XML Schema |
| User Feedback | Scripting languages | XML form model |
| Initializing Data | Server-side process to dynamically generate form | XML instance data |
| Data Representation | name=value pairs | XML |
| Host Language | HTML/XHTML | XHTML, XHTML Mobile Profile, SVG, etc. |
<?xml version="1.0" encoding="utf-8"?>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Form</title>
<link href="style.css" rel="stylesheet" type="text/css"></link>
</head>
<body>
<h1>Your Info</h1>
<form action="http://cscie153.dce.harvard.edu/cgi-bin/echo.cgi"
enctype="application/x-www-form-urlencoded" method="get">
<div>
<label for="name">Name</label>: <input id="name" name="name" type="text"></input>
</div>
<div>
<p>Favorite Ice Cream:</p>
<ul>
<li><input id="chocolate" name="ice_cream" type="radio" value="chocolate"></input>
<label for="chocolate">Chocolate</label></li>
<li><input id="vanilla" name="ice_cream" type="radio" value="vanilla"></input>
<label for="vanilla">Vanilla</label></li>
<li><input id="strawberry" name="ice_cream" type="radio" value="strawberry"></input>
<label for="strawberry">Strawberry</label></li>
</ul>
</div>
<div>
<p>Favorite Color: <select name="color">
<option value="red">Red/option>
<option value="blue">Blue</option>
<option value="green">Green</option>
<option value="yellow">Yellow</option>
</select></p>
</div>
<div>
<p>Pizza Toppings:</p>
<ul>
<li><input id="mushroom" name="pizza_topping" type="checkbox" value="mushroom"></input>
<label for="mushroom">Mushroom</label></li>
<li><input id="black_olive" name="pizza_topping" type="checkbox" value="black_olive"></input>
<label for="black_olive">Black Olive</label></li>
<li><input id="pepperoni" name="pizza_topping" type="checkbox" value="pepperoni"></input>
<label for="pepperoni">Pepperoni</label></li>
<li><input id="sausage" name="pizza_topping" type="checkbox" value="sausage"></input>
<label for="sausage">Sausage</label></li>
<li><input id="green_pepper" name="pizza_topping" type="checkbox" value="green_pepper"></input>
<label for="green_pepper">Green Pepper</label></li>
<li><input id="spinach" name="pizza_topping" type="checkbox" value="spinach"></input>
<label for="spinach">Spinach</label></li>
</ul>
</div>
<div>
<input type="submit" value="Submit"></input>
</div>
</form>
</body>
</html>
<?xml version="1.0" encoding="utf-8"?>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:xf="http://www.w3.org/2002/xforms">
<head>
<title>Form</title>
<link rel="stylesheet" type="text/css" href="style.css" />
<xf:model>
<xf:instance src="example8.xml" />
<xf:submission action="http://cscie153.dce.harvard.edu/cgi-bin/echo.cgi"
method="post" id="submit-info" />
<xf:instance id="choices" src="example8-choices.xml" />
</xf:model>
</head>
<body>
<h1>Your Info</h1>
<div>
<xf:input ref="name">
<xf:label>Name:</xf:label>
</xf:input>
</div>
<div>
<xf:select1 ref="ice_cream" appearance="full">
<xf:label>Favorite Ice Cream:</xf:label>
<xf:itemset nodeset="instance('choices')/ice_cream/item">
<xf:label ref="." />
<xf:value ref="@value" />
</xf:itemset>
</xf:select1>
</div>
<div>
<xf:select1 ref="color" appearance="minimal">
<xf:label>Favorite Color:</xf:label>
<xf:itemset nodeset="instance('choices')/colors/item">
<xf:label ref="." />
<xf:value ref="@value" />
</xf:itemset>
</xf:select1>
</div>
<div>
<xf:select ref="pizza" appearance="full">
<xf:label>Pizza Toppings:</xf:label>
<xf:itemset nodeset="instance('choices')/pizza/item">
<xf:label ref="." />
<xf:value ref="@value" />
</xf:itemset>
</xf:select>
</div>
<div>
<xf:submit submission="submit-info">
<xf:label>Submit Information</xf:label>
</xf:submit>
</div>
</body>
</html>Choices for form: (example8-choices.xml):
<choices>
<ice_cream>
<item value="chocolate">Chocolate</item>
<item value="vanilla">Vanilla</item>
<item value="strawberry">Strawberry</item>
<item value="chocolate_pudding">Chocolate Pudding</item>
</ice_cream>
<colors>
<item value="red">Red</item>
<item value="blue">Blue</item>
<item value="green">Green</item>
<item value="black">Black</item>
<item value="yellow">Yellow</item>
<item value="purple">Purple</item>
</colors>
<pizza>
<item value="mushroom">Mushroom</item>
<item value="black_olive">Black Olive</item>
<item value="pepperoni">Pepperoni</item>
<item value="sausage">Sausage</item>
<item value="green_pepper">Green Pepper</item>
<item value="spinach">Spinach</item>
<item value="tomato_basil">Tomato & Basil</item>
<item value="pineapple">Pineapple</item>
<item value="canadian_bacon">Canadian Bacon</item>
</pizza>
</choices>Instance data:
<data xmlns=""> <pi>3.14159</pi> <name>First and Last Name</name> <ice_cream>strawberry</ice_cream> <color>blue</color> <pizza>pepperoni sausage</pizza> </data>
You will need an XForms player to view these examples. I have provided screenshots of how these forms render in Mozilla XForms plugin for Firefox.
Separation of concerns:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:xf="http://www.w3.org/2002/xforms">
<head>
<title>Form</title>
<link rel="stylesheet" type="text/css" href="style.css" />
<xf:model>
<xf:submission action="http://csci153.dce.harvard.edu/cgi-bin/echo.cgi"
method="get" id="submit-info" />
</xf:model>
</head>
<body>
<h1>Your Info</h1>
<xf:input ref="name">
<xf:label>Name:</xf:label>
</xf:input>
<br />
<xf:submit submission="submit-info">
<xf:label>Submit Information</xf:label>
</xf:submit>
</body>
</html>
Instance Data Provided
<xf:instance>
<data xmlns="">
<name>First and Last Name</name>
<pi>3.14159</pi>
</data>
</xf:instance>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:xf="http://www.w3.org/2002/xforms">
<head>
<title>Form</title>
<link rel="stylesheet" type="text/css" href="style.css" />
<xf:model>
<xf:instance>
<data xmlns="">
<name>First and Last Name</name>
<pi>3.14159</pi>
</data>
</xf:instance>
<xf:submission action="http://cscie153.dce.harvard.edu/cgi-bin/echo.cgi"
method="get" id="submit-info" />
</xf:model>
</head>
<body>
<h1>Your Info</h1>
<xf:input ref="name">
<xf:label>Name:</xf:label>
</xf:input>
<br />
<xf:submit submission="submit-info">
<xf:label>Submit Information</xf:label>
</xf:submit>
</body>
</html>Instance Data in separate document.
Reference to instance data in XHTML:
<xf:instance src="forms/example4.xml" />
Instance data:
<data xmlns=""> <name>First and Last Name</name> <pi>3.14159</pi> </data>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:xf="http://www.w3.org/2002/xforms">
<head>
<title>Form</title>
<link rel="stylesheet" type="text/css" href="style.css" />
<xf:model>
<xf:instance src="forms/example4.xml" />
<xf:submission action="http://cscie153.dce.harvard.edu/cgi-bin/echo.cgi"
method="get" id="submit-info" />
</xf:model>
</head>
<body>
<h1>Your Info</h1>
<xf:input ref="name">
<xf:label>Name:</xf:label>
</xf:input>
<br />
<xf:submit submission="submit-info">
<xf:label>Submit Information</xf:label>
</xf:submit>
</body>
</html>"radio" or "pulldown" rendering
xf:select1 element, notice the appearance attribute (full|minimal).
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:xf="http://www.w3.org/2002/xforms">
<head>
<title>Form</title>
<link rel="stylesheet" type="text/css" href="style.css" />
<xf:model>
<xf:instance src="example5.xml" />
<xf:submission action="http://cscie153.dce.harvard.edu/cgi-bin/echo.cgi"
method="get" id="submit-info" />
</xf:model>
</head>
<body>
<h1>Your Info</h1>
<div>
<xf:input ref="name">
<xf:label>Name:</xf:label>
</xf:input>
</div>
<div>
<xf:select1 ref="ice_cream" appearance="full">
<xf:label>Favorite Ice Cream:</xf:label>
<xf:item>
<xf:label>Chocolate</xf:label>
<xf:value>chocolate</xf:value>
</xf:item>
<xf:item>
<xf:label>Vanilla</xf:label>
<xf:value>vanilla</xf:value>
</xf:item>
<xf:item>
<xf:label>Strawberry</xf:label>
<xf:value>strawberry</xf:value>
</xf:item>
</xf:select1>
</div>
<div>
<xf:select1 ref="color" appearance="minimal">
<xf:label>Favorite Color:</xf:label>
<xf:item>
<xf:label>Red</xf:label>
<xf:value>red</xf:value>
</xf:item>
<xf:item>
<xf:label>Blue</xf:label>
<xf:value>blue</xf:value>
</xf:item>
<xf:item>
<xf:label>Green</xf:label>
<xf:value>green</xf:value>
</xf:item>
<xf:item>
<xf:label>Yellow</xf:label>
<xf:value>yellow</xf:value>
</xf:item>
</xf:select1>
</div>
<div>
<xf:submit submission="submit-info">
<xf:label>Submit Information</xf:label>
</xf:submit>
</div>
</body>
</html>xf:select for 'checkbox'
<xf:select ref="pizza_topping" appearance="full">
<xf:label>Pizza Toppings:</xf:label>
<xf:item>
<xf:label>Mushroom</xf:label>
<xf:value>mushroom</xf:value>
</xf:item>
<xf:item>
<xf:label>Black Olive</xf:label>
<xf:value>black_olive</xf:value>
</xf:item>
<xf:item>
<xf:label>Pepperoni</xf:label>
<xf:value>pepperoni</xf:value>
</xf:item>
<xf:item>
<xf:label>Sausage</xf:label>
<xf:value>sausage</xf:value>
</xf:item>
<xf:item>
<xf:label>Green Pepper</xf:label>
<xf:value>green_pepper</xf:value>
</xf:item>
<xf:item>
<xf:label>Spinach</xf:label>
<xf:value>spinach</xf:value>
</xf:item>
</xf:select>Post to server as XML document in body of post.
<xf:submission
action="http://cscie153.dce.harvard.edu/cgi-bin/echo.cgi"
method="post" id="submit-info" />
Pull in choices from an external document.
model and instances:
<xf:model>
<xf:instance src="example8.xml" />
<xf:submission action="http://cscie153.dce.harvard.edu/cgi-bin/echo.cgi"
method="post" id="submit-info" />
<xf:instance id="choices" src="example8-choices.xml" />
</xf:model>Refer to 'choices' instance:
<xf:select ref="pizza" appearance="full">
<xf:label>Pizza Toppings:</xf:label>
<xf:itemset nodeset="instance('choices')/pizza/item">
<xf:label ref="." />
<xf:value ref="@value" />
</xf:itemset>
</xf:select>choices in XML:
<choices>
<ice_cream>
<item value="chocolate">Chocolate</item>
<item value="vanilla">Vanilla</item>
<item value="strawberry">Strawberry</item>
<item value="chocolate_pudding">Chocolate Pudding</item>
</ice_cream>
<colors>
<item value="red">Red</item>
<item value="blue">Blue</item>
<item value="green">Green</item>
<item value="black">Black</item>
<item value="yellow">Yellow</item>
<item value="purple">Purple</item>
</colors>
<pizza>
<item value="mushroom">Mushroom</item>
<item value="black_olive">Black Olive</item>
<item value="pepperoni">Pepperoni</item>
<item value="sausage">Sausage</item>
<item value="green_pepper">Green Pepper</item>
<item value="spinach">Spinach</item>
<item value="tomato_basil">Tomato & Basil</item>
<item value="pineapple">Pineapple</item>
<item value="canadian_bacon">Canadian Bacon</item>
</pizza>
</choices>
Bind values to an attribute via an XPath expression.
<div>
<xf:input ref="phone_number">
<xf:label>Phone Number:</xf:label>
</xf:input>
<xf:select1 ref="phone_number/@type">
<xf:label>Type:</xf:label>
<xf:item>
<xf:label>Work</xf:label>
<xf:value>W</xf:value>
</xf:item>
<xf:item>
<xf:label>Home</xf:label>
<xf:value>H</xf:value>
</xf:item>
<xf:item>
<xf:label>Mobile</xf:label>
<xf:value>M</xf:value>
</xf:item>
</xf:select1>
</div>Bind in the model, then the form simply refers to the bind statement. This keeps the information about the structure of the model in the model, not in the form.
In xf:model:
<xf:bind nodeset="name/first_name" id="fn" />
<xf:bind nodeset="name/middle_initial" id="mi" />
<xf:bind nodeset="name/last_name" id="ln" />In XHTML:
<xf:input bind="mi">
<xf:label>Middle Initial:</xf:label>
</xf:input>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:xf="http://www.w3.org/2002/xforms"
xmlns:ev="http://www.w3.org/2001/xml-events"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<head>
<title>Form</title>
<link rel="stylesheet" type="text/css" href="style.css" />
<xf:model id="model1">
<xf:instance id="sampledata" src="example10.xml" />
<xf:submission action="http://cscie153.dce.harvard.edu/cgi-bin/echo.cgi"
method="post" id="submit-info" />
<xf:bind nodeset="name/first_name" id="fn" />
<xf:bind nodeset="name/middle_initial" id="mi" />
<xf:bind nodeset="name/last_name" id="ln" />
</xf:model>
</head>
<body>
<h1>Your Info</h1>
<div>
<xf:group>
<p>
<xf:input bind="fn">
<xf:label>First:</xf:label>
</xf:input>
</p>
<p>
<xf:input bind="mi">
<xf:label>Middle Initial:</xf:label>
</xf:input>
</p>
<p>
<xf:input bind="ln">
<xf:label>Last:</xf:label>
</xf:input>
</p>
</xf:group>
</div>
<div>
<xf:submit submission="submit-info">
<xf:label>Submit Information</xf:label>
</xf:submit>
</div>
</body>
</html>Fields can be marked as required.
The 'required' and 'type' attributes are used:
<xf:bind nodeset="name/last_name" id="ln" required="true()" type="xsd:string" />
In CSS, the required and invalid pseudo-elements are used to style parts of the form that are required:
/* Display a red asterisk after all required form controls */
*:required::after { content: "*"; color: red; }
/* Display a yellow background on all invalid form controls */
*:invalid { background-color: yellow; }Illustration of different W3C XML Schema types (xsd:date, xsd:integer) and use of XPath expression in "constraint" attribute.
<xf:bind nodeset="name/first_name" id="fn" />
<xf:bind nodeset="name/middle_initial" id="mi" />
<xf:bind nodeset="name/last_name" id="ln"
required="true( )" type="xsd:string" />
<xf:bind nodeset="date" id="mydate" required="true( )"
type="xsd:date" />
<xf:bind nodeset="integer" id="myint" required="true( )"
type="xsd:integer" />
<xf:bind nodeset="integer100" id="myint100"
required="true( )" type="xsd:integer"
constraint=". < 100" />Required fields and invalid fields are marked:
Calendar widget appears for a field with xsd:date constraint:
As fields become valid, styling changes:
Submitted information:
<xf:input bind="myint"> <xf:label>Integer:</xf:label> <xf:hint>An integer is a member of the set of positive and negative whole numbers and zero</xf:hint> </xf:input>
The "hint" appears when the cursor moves over the input box or label:
F1 will display any "help" associated with an input.
<xf:input bind="ln"> <xf:label>Last:</xf:label> <xf:help>A name shared in common to identify the members of a family, as distinguished from each member's given name. Also called family name, last name.</xf:help> </xf:input>
Alerts can be of different types -- unobtrusive to blocking.
<xf:input bind="fn"> <xf:label>First:</xf:label> <xf:message level="ephemeral" ev:event="DOMFocusIn">Please enter your first name.</xf:message> </xf:input
Expose different parts of the form.
<xf:switch>
<xf:case id="personalinfo">
<!-- collect personal information here -->
<p>
<xf:trigger>
<xf:label>Move to Food Info</xf:label>
<xf:toggle ev:event="DOMActivate"
case="foodinfo" />
</xf:trigger>
</p>
</xf:case>
<xf:case id="foodinfo">
<!-- collect food preferences here -->
<p>
<xf:trigger>
<xf:label>Move to Personal
Info</xf:label>
<xf:toggle ev:event="DOMActivate"
case="personalinfo" />
</xf:trigger>
</p>
</xf:case>
</xf:switch>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:form="http://www.w3.org/2002/xforms"
xmlns:ev="http://www.w3.org/2001/xml-events" xml:lang="en">
<head>
<title>Choices</title>
<link rel="stylesheet" type="text/css" href="xforms.css"/>
<form:model id="model">
<form:instance id="choices">
<choices xmlns="">
<choice>
<division/>
<conference/>
<school/>
</choice>
</choices>
</form:instance>
<form:instance id="schools" src="choices.xml"/>
<form:bind nodeset="choice/conference" relevant="../division!= ''"/>
<form:bind nodeset="choice/school" relevant="../conference!= ''"/>
</form:model>
</head>
<body>
<form:repeat nodeset="choice">
<p>
<form:select1 ref="division">
<form:label>Division:</form:label>
<form:itemset nodeset="instance('schools')/division">
<form:label ref="@name"/>
<form:value ref="@name"/>
</form:itemset>
<form:action ev:event="xforms-value-changed">
<form:setvalue ref="../conference"/>
<form:rebuild model="model"/>
</form:action>
</form:select1>
</p>
<p>
<form:select1 ref="conference">
<form:label>Conference:</form:label>
<form:itemset
nodeset="instance('schools')/division[@name = current()/../division]/conference">
<form:label ref="@name"/>
<form:value ref="@name"/>
</form:itemset>
<form:action ev:event="xforms-value-changed">
<form:setvalue ref="../school"/>
<form:rebuild model="model"/>
</form:action>
</form:select1>
</p>
<p>
<form:select1 ref="school">
<form:label>School:</form:label>
<form:itemset
nodeset="instance('schools')/division[@name = current()/../division]/conference
[@name = current()/../conference]/school">
<form:label ref="@name"/>
<form:value ref="@name"/>
</form:itemset>
</form:select1>
</p>
<hr/>
</form:repeat>
<form:trigger>
<form:label>Add</form:label>
<form:insert nodeset="choice" position="after" at="last()"
ev:event="DOMActivate"/>
</form:trigger>
</body>
</html>Copyright © 2002-2009 David P. Heitmeyer
