adl/transforms/adl2controllerclasses.xslt

<?xml version="1.0" encoding="UTF-8"?>

<!--
    Application Description Language framework
    adl2controllerclasses.xsl
    
    (c) 2007 Cygnet Solutions Ltd
    
    Transform ADL into (partial) controller classes
    
    $Author: sb $
    $Revision: 1.18 $
    $Date: 2008-10-02 10:52:40 $
  -->

<!-- WARNING WARNING WARNING: Do NOT reformat this file! 
     Whitespace (or lack of it) is significant! -->
<xsl:stylesheet version="1.0"
  xmlns="http://libs.cygnets.co.uk/adl/1.1/"
  xmlns:adl="http://libs.cygnets.co.uk/adl/1.1/"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

	<xsl:include href="csharp-type-include.xslt"/>

	<xsl:output encoding="UTF-8" method="text"/>

	<!-- The locale for which these controllers are generated 
      TODO: Controllers should NOT be locale specific. Instead, the
      controller should render views and generate messages based on the 
      client's locale. However, there may still need to be a concept of a
      'default locale', for when we don't have messages which suit the
      client's locale -->
	<xsl:param name="locale" select="en-UK"/>

	<!-- bug 1896 : boilerplate text in views should be tailored to the locale of
		the expected user. Unfortunately I haven't yet worked out how to do
		conditional includes in XSLT, so this is a step on the way to a solution,
		not a solution in itself. -->
	<xsl:include href="i18n-en-GB-include.xslt"/>

	<!-- The C# namespace within which I shall generate controllers -->
	<xsl:param name="controllerns" select="Unset"/>
	<!-- The C# namespace used by the entities for this project -->
	<xsl:param name="entityns" select="Unset"/>
	<!-- Whether to authenticate at application or at database layer. 
    If not 'Application', then 'Database'. -->
	<xsl:param name="authentication-layer" select="Application"/>

	<!-- the name and version of the product being built -->
	<xsl:param name="product-version" select="'Application Description Language Framework'"/>

	<!-- bug 1800 : the name of the Velocity layout to use -->
	<xsl:param name="layout-name" select="adl-default-layout"/>
	<!-- bug 1800 : the name of the Velocity rescue view to use -->
	<xsl:param name="rescue-name"/>
	<!-- bug 1800 : the name of the area (i.e. URL path part) to use -->
	<xsl:param name="area-name"/>

	<xsl:template match="adl:application">
		/* ---- [ cut here: next file '<xsl:value-of select="concat( 'Abstract', /adl:application/@name, 'Controller')"/>.auto.cs'] ---------------- */
		//------------------------------------------------------------------
		//
		//  <xsl:value-of select="$product-version"/>
		//  <xsl:value-of select="concat( 'Abstract', /adl:application/@name, 'Controller.auto.cs')"/>
		//
		// (c) 2007 Cygnet Solutions Ltd
		//
		//  Automatically generated abstract super class for controllers for the
		//	<xsl:value-of select="/adl:application/@name"/> application; generated using
		//  adl2controllerclasses.xslt version <xsl:value-of select="substring( '$Revision: 1.18 $', 10)"/>
		//
		//  <xsl:value-of select="/adl:application/@revision"/>
		//
		//  This file is automatically generated; DO NOT EDIT IT.
		//
		//------------------------------------------------------------------

		using System;
		using System.Data;
		using System.Collections.Generic;
		using NHibernate;
		using NHibernate.Expression;
		using Cygnet.Web.Controllers;
		using <xsl:value-of select="$entityns"/>;

		namespace <xsl:value-of select="$controllerns"/> {

		/// &lt;summary&gt;
		/// Automatically generated abstract super class for controllers for the
		/// <xsl:value-of select="/adl:application/@name"/> application
		///
		/// DO NOT EDIT THIS FILE!
		/// &lt;/summary&gt;
		public abstract partial class <xsl:value-of select="concat( 'Abstract', /adl:application/@name, 'Controller')"/> : BaseController {
		<xsl:for-each select="//adl:entity">
			/// &lt;summary&gt;
			/// Return a list of all instances of <xsl:value-of select="@name"/> for use in menus, etc;
			/// &lt;/summary&gt;
			protected IList&lt;<xsl:value-of select="concat( $entityns, '.', @name)"/>&gt; <xsl:value-of select="concat( 'FetchAll', @name)"/>( ISession hibernator) {
			return hibernator.CreateCriteria(typeof(<xsl:value-of select="concat( $entityns, '.', @name)"/>))
			<xsl:for-each select="descendant::adl:property[@distinct='user']">
				.AddOrder( <xsl:value-of select="concat('new Order( &#34;', @name, '&#34;, true)')"/>)
			</xsl:for-each>
			.SetCacheable( true)
			.SetCacheRegion( "<xsl:value-of select="/adl:application/@name"/>")
			.List&lt;<xsl:value-of select="concat( $entityns, '.', @name)"/>&gt;();
			}

		</xsl:for-each>
		}
		}
		<xsl:apply-templates select="adl:entity"/>
	</xsl:template>


	<!-- Don't bother generating anything for foreign entities -->
	<xsl:template match="adl:entity[@foreign='true']"/>

	<xsl:template match="adl:entity">
		/*
		 *	Not generating controller for entity <xsl:value-of select="@name"/>,
		 *	as it has no forms, pages or lists.
		 */
	</xsl:template>
	<xsl:template match="adl:entity[adl:form|adl:page|adl:list]">

		/* ---- [ cut here: next file '<xsl:value-of select="@name"/>Controller.auto.cs'] ---------------- */

		//------------------------------------------------------------------
		//
		//  <xsl:value-of select="$product-version"/>
		//  <xsl:value-of select="@name"/>Controller.auto.cs
		//
		// (c) 2007 Cygnet Solutions Ltd
		//
		//  Controller for auto-generated forms for editing <xsl:value-of select="@name"/>s
		//  Automatically generated from application description using
		//  adl2controllerclasses.xslt version <xsl:value-of select="substring( '$Revision: 1.18 $', 10)"/>
		//
		//  This file is automatically generated; DO NOT EDIT IT.
		//
		//------------------------------------------------------------------

		using System;
		using System.Data;
		using System.Collections.Generic;
		using System.Configuration;
		using System.Web;
		using System.Web.Security;
		using System.Web.UI;
		using System.Web.UI.WebControls;
		using System.Web.UI.WebControls.WebParts;
		using System.Web.UI.HtmlControls;
		using Castle.MonoRail.Framework.Helpers;
		using Cygnet.Exceptions;
		using Cygnet.Web.Helpers;
		using Cygnet.Web.Controllers;
		using Cygnet.Web.SmartControls;
		using NHibernate;
		using NHibernate.Expression;
		using Castle.MonoRail.Framework;
		using Iesi.Collections.Generic;
		using <xsl:value-of select="$entityns"/>;

		namespace <xsl:value-of select="$controllerns"/> {

		/// &lt;summary&gt;
		/// Automatically generated partial controller class following 'thin controller'
		/// strategy, for entity <xsl:value-of select="@name"/>. Note that part of this
		/// class may be defined in a separate file called
		/// <xsl:value-of select="@name"/>Controller.manual.cs, q.v.
		///
		/// DO NOT EDIT THIS FILE!
		/// &lt;/summary&gt;
		[
		<xsl:if test="$layout-name">
			Layout("<xsl:value-of select="$layout-name"/>"),
		</xsl:if>
		<xsl:if test="$rescue-name">
			Rescue("<xsl:value-of select="$rescue-name"/>"),
		</xsl:if>
		ControllerDetails("<xsl:value-of select="@name"/>",	Area = "<xsl:value-of select="$area-name"/>"),
		Helper(typeof(<xsl:value-of select="concat( @name, 'FieldHelper')"/>), "<xsl:value-of select="concat( @name, 'FieldHelper')"/>")
		]
		public partial class <xsl:value-of select="concat( @name, 'Controller')"/> : <xsl:value-of select="concat( 'Abstract', /adl:application/@name, 'Controller')"/> {

		/* The SmartFormHelper stuff in generated controller classes does not yet work. There is some
		* hope that in future it will offer definite benefits and in the mean time it is doing no harm.
		* However if you are looking for bugs look elsewhere - this is not currently used */
		protected class <xsl:value-of select="concat( @name, 'FieldHelper')"/> : SmartFormHelper {
		public <xsl:value-of select="concat( @name, 'FieldHelper')"/>() {
		<xsl:for-each select="descendant::adl:property[@type='entity']">
			<xsl:variable name="entityname" select="@entity"/>
			<xsl:variable name="entity" select="//adl:entity[@name=$entityname]"/>
			<xsl:choose>
				<xsl:when test="$entity/@foreign='true'">
					/* Entity <xsl:value-of select="$entityname"/> is foreign..? */
					<xsl:variable name="foreignkey" select="$entity/adl:key/adl:property[position()=1]/@name"/>
					<xsl:variable name="userident">
						<xsl:choose>
							<xsl:when test="$entity//adl:property[@distinct='user' or @distinct='all']">
								<xsl:value-of select="$entity//adl:property[@distinct='user' or @distinct='all'][position()=1]/@name"/>
							</xsl:when>
							<xsl:otherwise>
								<xsl:value-of select="$foreignkey"/>
							</xsl:otherwise>
						</xsl:choose>
					</xsl:variable>
					Register&lt;<xsl:value-of select="concat( $entityns, '.', $entityname)"/>&gt;( "",
					new TypeMenuControl&lt;<xsl:value-of select="concat( $entityns, '.', $entityname)"/>&gt;( "<xsl:value-of select="$foreignkey"/>","<xsl:value-of select="$userident"/>")); 
				</xsl:when>
				<xsl:otherwise>
					Register&lt;<xsl:value-of select="concat( $entityns, '.', $entityname)"/>&gt;( "", EntityMenuControl&lt;<xsl:value-of select="concat( $entityns, '.', $entityname)"/>&gt;.Instance);
				</xsl:otherwise>
			</xsl:choose>
		</xsl:for-each>
		<xsl:for-each select="descendant::adl:property[@type='list']">
			<xsl:variable name="entityname" select="@entity"/>
			Register&lt;<xsl:value-of select="concat( $entityns, '.', $entityname)"/>&gt;( "", EntityShuffleControl&lt;<xsl:value-of select="concat( $entityns, '.', $entityname)"/>&gt;.Instance);
		</xsl:for-each>

		}
		}

		<xsl:if test="adl:property[@type='message']">
			/// &lt;summary&gt;
			/// Temporary hack to sort a problem with uninitialised messages
			/// &lt;/summary&gt;
			public void fixupMessages() {
			ISession hibernator =
			NHibernateHelper.GetCurrentSession( <xsl:if test="$authentication-layer = 'Database'">
				Session[ NHibernateHelper.USERTOKEN],
				Session[NHibernateHelper.PASSTOKEN]
			</xsl:if>);
			ICollection&lt;<xsl:value-of select="concat($entityns, '.', @name)"/>&gt; instances =
			hibernator.CreateCriteria( typeof( <xsl:value-of select="concat($entityns, '.', @name)"/>))
			.List&lt;<xsl:value-of select="concat($entityns, '.', @name)"/>&gt;();

			foreach ( <xsl:value-of select="concat($entityns, '.', @name)"/> instance in instances) {
			<xsl:for-each select="adl:property[@type='message']">
				if ( <xsl:value-of select="concat( 'instance.', @name)"/> == null || <xsl:value-of select="concat( 'instance.', @name, '.MessageId')"/> == 0 ){
				<xsl:value-of select="concat( 'instance.', @name)"/> = new Message();
				hibernator.Save( <xsl:value-of select="concat( 'instance.', @name)"/>);
				}
			</xsl:for-each>
			hibernator.Save( instance);
			}
			hibernator.Flush();
			<xsl:if test="adl:list[@name='list']">
				list();
			</xsl:if>
			}
		</xsl:if>

		<xsl:if test="adl:form">
			<!-- unless there's at least one form, we won't generate a 'store' method -->
			/// &lt;summary&gt;
			/// Store the record represented by the parameters passed in an HTTP service
			/// Without Id -&gt; it's new, I create a new persistent object;
			/// With Id -&gt; it's existing, I update the existing persistent object.
			/// NOTE: Should only be called from a handler for method 'POST', never 'GET'.
			/// &lt;/summary&gt;
			private void Store()
			{
			ISession hibernator =
			NHibernateHelper.GetCurrentSession( <xsl:if test="$authentication-layer = 'Database'">
				Session[ NHibernateHelper.USERTOKEN],
				Session[NHibernateHelper.PASSTOKEN]
			</xsl:if>);
			List&lt;string&gt; messages = new List&lt;string&gt;();
			/* A 'newborn' instance can be updated even if the current user doesn't have
			* update permissions, seeing that we use an update operation to set the
			* field values and save the entity. */
			Boolean isnewborn = false;

			/* the instance (record) of type <xsl:value-of select="@name"/> we're dealing with */
			<xsl:value-of select="concat($entityns, '.', @name)"/> record = null;

			try {
			<xsl:if test="adl:property[@distinct='system' or @distinct='all']">
				/* a criteria object to use in distinctness checks */
				ICriteria matchCriteria = null;
			</xsl:if>

			record = FetchRecord( hibernator);

			<xsl:apply-templates select="adl:property"/>

			if ( HasNoErrors()) {
			if ( record == null) {
			/* it seems to be new, create persistent object - if the user is permitted to */
			AssertUserCanCreate();

			try {
			if ( AllKeys()) {
			record = new <xsl:value-of select="concat($entityns, '.', @name)"/>(<xsl:for-each select="adl:key/adl:property">
				<xsl:variable name="basetype">
					<xsl:call-template name="base-type">
						<xsl:with-param name="property" select="."/>
					</xsl:call-template>
				</xsl:variable>
				<xsl:choose>
					<xsl:when test="$basetype='integer'">
						Int32.Parse( Form["<xsl:value-of select="concat( 'instance.', @name)"/>"])
					</xsl:when>
					<xsl:when test="$basetype='entity'">
						<!-- Maybe TODO: this doesn't work recursively - if an entity has a key which is an entity 
                  and the key of that entity is an entity, you're on your own, mate! -->
						<xsl:variable name="keyentity" select="@entity"/>
						<xsl:variable name="keyenttype">
							<xsl:call-template name="primary-key-csharp-type">
								<xsl:with-param name="entity" select="//adl:entity[@name=$keyentity]"/>
							</xsl:call-template>
						</xsl:variable>
						hibernator.CreateCriteria( typeof( <xsl:value-of select="concat( $entityns, '.', $keyentity)"/>))
						<xsl:call-template name="add-hibernate-expression-eq">
							<xsl:with-param name="property" select="//adl:entity[@name=$keyentity]/adl:key/adl:property[position()=1]"/>
							<xsl:with-param name="value">
								Form[ "<xsl:value-of select="concat( 'instance.', @name)"/>"]
							</xsl:with-param>
						</xsl:call-template>
						.UniqueResult&lt;<xsl:value-of select="concat( $entityns, '.', $keyentity)"/>&gt;()
					</xsl:when>
					<xsl:otherwise>
						Form["<xsl:value-of select="concat( 'instance.', @name)"/>"]
					</xsl:otherwise>
				</xsl:choose>
				<xsl:choose>
					<xsl:when test="position() = last()"/>
					<xsl:otherwise>, </xsl:otherwise>
				</xsl:choose>
			</xsl:for-each>);
			}
			else
			{
			record = new <xsl:value-of select="concat($entityns, '.', @name)"/>();
			}
			}
			catch ( FormatException) {
			/* failed to parse a number - not wholly unexpected, since it's most likely
			* that an empty string was passed in */
			record = new <xsl:value-of select="concat($entityns, '.', @name)"/>();
			}
			catch ( NullReferenceException) {
			/* again, probably more normal than otherwise */
			record = new <xsl:value-of select="concat($entityns, '.', @name)"/>();
			}
			messages.Add( "New <xsl:value-of select="@name"/> record created");
			isnewborn = true;
			}

			if ( record != null) {
			/* a transaction to ensure our database operations are atomic */
			ITransaction tx = null;

			if ( ! isnewborn) {
			/* isnewborn cannot be true unless we've already checked user can create
			* so no need to do it again here */
			AssertUserCanUpdate();
			}

			try {
			/* begin our atomic transaction */
			tx = hibernator.BeginTransaction();

			/* actually update the record */
			BindObjectInstance( record, ParamStore.Form, "instance");

			<xsl:if test="descendant::adl:property[@type='message']">
				/* there is at least one slot whose value is an internationalised message;
				* if these have yet to be initialised they must be handled specially */
				Locale locale = GetBestLocaleForUser();
				<xsl:for-each select="descendant::adl:property[@type='message']">
					if ( ! String.IsNullOrEmpty( Form["<xsl:value-of select="concat( 'instance.', @name)"/>"])){
					/* there's an uninitialised message for this slot */
					Message mess = record.<xsl:value-of select="@name"/>;
					if ( mess == null) {
					mess = new Message();
					}
					hibernator.Save( mess);

					Translation trans = mess.GetTranslationObject( locale, hibernator);
					if ( trans == null) {
					trans = new Translation( mess, locale);
					}
					trans.MessageText = Form["<xsl:value-of select="concat( 'instance.', @name)"/>"];
					record.<xsl:value-of select="@name"/> = mess;
					hibernator.Save( trans);
					}
				</xsl:for-each>
			</xsl:if>
			<xsl:for-each select="descendant::adl:property[@type='entity']">
				/* for properties of type 'entity', it should not be necessary to do anything
				* special - BindObjectInstance /should/ do it all. Unfortunately it sometimes
				* doesn't, and I haven't yet characterised why not. */
				<xsl:variable name="entityname" select="@entity"/>
				<xsl:choose>
					<xsl:when test="//adl:entity[@name=$entityname]">
						if ( ! String.IsNullOrEmpty( Form["<xsl:value-of select="concat( 'instance.', @name)"/>"]))
						{
						record.<xsl:value-of select="@name"/> = <xsl:call-template name="fetch-property-instance">
							<xsl:with-param name="property" select="."/>
							<xsl:with-param name="value">Form[ "<xsl:value-of select="concat( 'instance.', @name)"/>"]</xsl:with-param> 
						</xsl:call-template>;
						}
					</xsl:when>
					<xsl:otherwise>
						<xsl:message terminate="yes">
							ADL: ERROR: Could not fix up value of <xsl:value-of select="@name "/>, because no
							entity was found called <xsl:value-of select="$entityname"/>
						</xsl:message>
					</xsl:otherwise>
				</xsl:choose>
			</xsl:for-each>

			<xsl:for-each select="descendant::adl:property[@type='link']">
				<xsl:variable name="farentityname" select="@entity"/>
				<xsl:variable name="farkey" select="//adl:entity[@name=$farentityname]/adl:key/adl:property[position()=1]/@name"/>
				<xsl:variable name="farkeybasetype">
					<xsl:call-template name="base-type">
						<xsl:with-param name="property" select="//adl:entity[@name=$farentityname]/adl:key/adl:property[position()=1]"/>
					</xsl:call-template>
				</xsl:variable>
				/* to update a link table which has no other data than the near and far keys, it is
				* sufficient to smash the existing values and create new ones. It's also a lot easier! */

				string[] <xsl:value-of select="concat(@name, 'Values')"/> = Form.GetValues( "<xsl:value-of select="concat( 'instance.', @name)"/>");

				if ( <xsl:value-of select="concat(@name, 'Values')"/> != null)
				{
				/* update the linking table for my <xsl:value-of select="@name"/>; first smash the old values */
				if ( <xsl:value-of select="concat( 'record.', @name)"/> != null)
				{
				<xsl:value-of select="concat( 'record.', @name)"/>.Clear();
				}
				else
				{
				<xsl:value-of select="concat( 'record.', @name)"/> = new HashedSet&lt;<xsl:value-of select="concat( $entityns, '.', @entity)"/>&gt;();
				}

				/* then reinstate the values from the indexes passed */
				foreach ( string index in <xsl:value-of select="concat(@name, 'Values')"/>)
				{
				<xsl:value-of select="concat( 'record.', @name)"/>.Add(
				hibernator.CreateCriteria(typeof(<xsl:value-of select="concat( $entityns, '.', @entity)"/>))
				<xsl:call-template name="add-hibernate-expression-eq">
					<xsl:with-param name="property" select="//adl:entity[@name=$farentityname]/adl:key/adl:property[position()=1]"/>
					<xsl:with-param name="value" select="'index'"/>
				</xsl:call-template>
				.UniqueResult&lt;<xsl:value-of select="concat( $entityns, '.', @entity)"/>&gt;());
				}
				}
			</xsl:for-each>

			<xsl:for-each select="descendant::adl:property[@type='list']">
				<xsl:variable name="farentityname" select="@entity"/>
				<xsl:variable name="farkey" select="//adl:entity[@name=$farentityname]/adl:key/adl:property[position()=1]/@name"/>
				<xsl:variable name="farkeybasetype">
					<xsl:call-template name="base-type">
						<xsl:with-param name="property" select="//adl:entity[@name=$farentityname]/adl:key/adl:property[position()=1]"/>
					</xsl:call-template>
				</xsl:variable>
				<xsl:variable name="foreignkey">
					<xsl:choose>
						<xsl:when test="@farkey">
							<xsl:value-of select="@farkey"/>
						</xsl:when>
						<xsl:otherwise>
							<!-- If I haven't been told what the far side foreign key is, assume it has the
								name of my entity -->
							<xsl:value-of select="ancestor::adl:entity/@name"/>
						</xsl:otherwise>
					</xsl:choose>
				</xsl:variable>
				/* with a list we cannot just smash the old values! Instead we need to check
				* each one and exclude it if no longer required */
				if ( Form.GetValues( "<xsl:value-of select="concat( 'instance.', @name)"/>") != null)
				{
				string[] <xsl:value-of select="concat(@name, 'Values')"/> = Form.GetValues( "<xsl:value-of select="concat( 'instance.', @name)"/>");

				/* updating <xsl:value-of select="@name"/> child records; first remove any not on the submitted list */
				foreach ( <xsl:value-of select="@entity"/> item in record.<xsl:value-of select="@name"/>)
				{
				String itemId = item.KeyString;
				bool found = false;

				foreach ( string index in <xsl:value-of select="concat(@name, 'Values')"/>)
				{
				if ( index.Equals( itemId))
				{
				found = true;
				break;
				}
				} /* foreach ( string index... */

				if ( ! found)
				{
				record.<xsl:value-of select="@name"/>.Remove( item);
				break;
				}
				} /* foreach ( <xsl:value-of select="@entity"/> item ... */

				/* then add any on the included list which are not already members */
				foreach ( string index in <xsl:value-of select="concat(@name, 'Values')"/>)
				{
				<xsl:value-of select="concat( $entityns, '.', @entity)"/> item =
				hibernator.CreateCriteria(typeof(<xsl:value-of select="@entity"/>))
				<xsl:call-template name="add-hibernate-expression-eq">
					<xsl:with-param name="property" select="//adl:entity[@name=$farentityname]/adl:key/adl:property[position()=1]"/>
					<xsl:with-param name="value" select="'index'"/>
				</xsl:call-template>
				.UniqueResult&lt;<xsl:value-of select="concat( $entityns, '.', @entity)"/>&gt;();

				if ( ! record.<xsl:value-of select="@name"/>.Contains( item))
				{
				/* check whether it's already a child of another <xsl:value-of select="ancestor::adl:entity/@name"/>
				* and, if it is, remove it */
				<xsl:value-of select="concat( $entityns, '.', ancestor::adl:entity/@name)"/> oldparent =
				<xsl:value-of select="concat( 'item.', $foreignkey)"/>;
				if ( oldparent != null) {
				oldparent.<xsl:value-of select="@name"/>.Remove( item);
				hibernator.Save( oldparent);
				}

				/* then add it to my <xsl:value-of select="@name"/> */
				record.<xsl:value-of select="@name"/>.Add( item);
				<xsl:value-of select="concat( 'item.', $foreignkey)"/> = record;
				hibernator.Save( item);
				}
				} /* foreach ( string index... */
				} /* if ( Form.GetValues( "<xsl:value-of select="concat( 'instance.', @name)"/>") != null) */
			</xsl:for-each>

			/* write the record to the database, in order to guarantee we have a valid key */
			hibernator.Save(record);
			hibernator.Flush();
			tx.Commit();

			messages.Add( "<xsl:call-template name="i18n-record-saved"/>");
			} /* try actually commit */
			catch ( Exception any) {
			tx.Rollback();
			messages.Add( "<xsl:call-template name="i18n-record-not-saved"/>");
			throw any;
			}
			} /* if ( record != null) */
			else {
			throw new ApplicationException( String.Format( "<xsl:call-template name="i18n-record-not-found">
				<xsl:with-param name="entity-name" select="@name"/>
			</xsl:call-template>"));
			}
			} /* if ( HasNoErrors()) */
			} /* try */
			catch ( DataSuitabilityException dse)
			{
			AddError( dse);
			}
			catch ( ApplicationException axe)
			{
			AddError( axe.Message);
			}

			if ( ! HasNoErrors())
			{
			/* the session may be polluted; create a new session */
			NHibernateHelper.CloseSession();
			hibernator = NHibernateHelper.GetCurrentSession(<xsl:if test="$authentication-layer = 'Database'">
				Session[ NHibernateHelper.USERTOKEN],
				Session[NHibernateHelper.PASSTOKEN]
			</xsl:if>);

			record = FetchRecord( hibernator);
			} /* if ( ! HasNoErrors()) */
			<xsl:value-of select="concat( 'this.',adl:form[position()=1]/@name)"/>( record);
			}
		</xsl:if>

		<xsl:if test="adl:form">
			<!-- unless there's at least one form, we won't generate a 'delete' method -->
			/// &lt;summary&gt;
			/// Actually delete the selected record
			/// &lt;/summary&gt;
			[AccessibleThrough(Verb.Post)]
			public void Delete()
			{
			AssertUserCanDelete();
			ISession hibernator =
			NHibernateHelper.GetCurrentSession( <xsl:if test="$authentication-layer = 'Database'">
				Session[ NHibernateHelper.USERTOKEN],
				Session[NHibernateHelper.PASSTOKEN]
			</xsl:if>);

			if ( "true".Equals( Params["reallydelete"]))
			{
			<xsl:value-of select="concat($entityns, '.', @name)"/> record = FetchRecord( hibernator);

			if ( record != null)
			{
			hibernator.Delete( record);
			hibernator.Flush();
			}
			else
			{
			throw new ApplicationException( "No such record?");
			}
			}
			<xsl:choose>
				<xsl:when test="adl:list">
					Redirect( "<xsl:value-of select="concat(adl:list[position()=1]/@name, '.rails')"/>");
				</xsl:when>
				<xsl:otherwise>
					Redirect( FormsAuthentication.DefaultUrl);
				</xsl:otherwise>
			</xsl:choose>
			}
		</xsl:if>
		<xsl:apply-templates select="adl:form"/>

		<xsl:if test="adl:list">
			<xsl:variable name="listname" select="adl:list[position()=1]/@name"/>
			<xsl:apply-templates select="adl:list"/>
			/// &lt;summary&gt;
			/// list all instances of this entity to allow the user to select one for editing
			/// this method invokes the default list view - which is probably what you want unless
			/// you've a special reason for doing something different
			/// &lt;/summary&gt;
			public void InternalShowList()
			{
			InternalShowList( "<xsl:value-of select="$listname"/>");
			}

			/// &lt;summary&gt;
			/// list all instances of this entity to allow the user to select one for editing
			/// &lt;/summary&gt;
			/// &lt;param name="view"&gt;The name of the list view to show&lt;/param&gt;
			public void InternalShowList( String view)
			{
			AssertUserCanRead();
			ISession hibernator =
			NHibernateHelper.GetCurrentSession( <xsl:if test="$authentication-layer = 'Database'">
				Session[ NHibernateHelper.USERTOKEN],
				Session[NHibernateHelper.PASSTOKEN]
			</xsl:if>);

			ICriteria search =
			hibernator.CreateCriteria(typeof(<xsl:value-of select="concat( $entityns, '.', @name)"/>));

			<xsl:for-each select="adl:property">
				<xsl:variable name="base-type">
					<xsl:call-template name="base-type">
						<xsl:with-param name="property" select="."/>
					</xsl:call-template>
				</xsl:variable>
				<xsl:choose>
					<xsl:when test="$base-type='boolean'"/>
					<xsl:when test="$base-type='link'"/>
					<xsl:when test="$base-type='list'"/>
					<xsl:otherwise>
						if ( ! String.IsNullOrEmpty( Params[ "<xsl:value-of select="concat( 'search_', @name)"/>"])) {
						search<xsl:call-template name="add-hibernate-expression-like">
							<xsl:with-param name="property" select="."/>
							<xsl:with-param name="value">Params["<xsl:value-of select="concat( 'search_', @name)"/>"]</xsl:with-param> 
						</xsl:call-template>;
						}
					</xsl:otherwise>
				</xsl:choose>
			</xsl:for-each>
			<xsl:for-each select="adl:property[@distinct='user' or @distinct='all']">
				search.AddOrder(<xsl:value-of select="concat( ' new Order( &#34;', @name, '&#34;, true)')"/>);
			</xsl:for-each>

			IList&lt;<xsl:value-of select="concat( $entityns, '.', @name)"/>&gt; instances = search.List&lt;<xsl:value-of select="concat( $entityns, '.', @name)"/>&gt;();

			<xsl:if test="$authentication-layer = 'Database'">
				PropertyBag["username"] = Session[ NHibernateHelper.USERTOKEN];
			</xsl:if>
			PropertyBag["instances"] =
			PaginationHelper.CreatePagination( this, instances, 25);

			RenderViewWithFailover(view + ".vm", view + ".auto.vm");
			}
		</xsl:if>

		/// &lt;summary&gt;
		/// Check whether values for all my keys are available in the form fields
		/// &lt;/summary&gt;
		protected bool AllKeys() {
		/* whether we have valid values for all the key fields */
		bool result = true;

		<xsl:for-each select="adl:key/adl:property">
			if ( String.IsNullOrEmpty( Form["<xsl:value-of select="concat( 'instance.', @name)"/>"])) {
			result = false;
			} else if ( "<xsl:value-of select="concat('$instance.', @name)"/>".Equals( Form["<xsl:value-of select="concat( 'instance.', @name)"/>"])) {
			/* nasty artefact of NVelocity forms - default 'null value' is dollar followed by fieldname */
			result = false;
			}
		</xsl:for-each>

		return result;
		}

		/// &lt;summary&gt;
		/// Fetch the record represented by the values in the current Form
		/// &lt;/summary&gt;
		protected <xsl:value-of select="concat($entityns, '.', @name)"/> FetchRecord(ISession hibernator) {
		/* the instance (record) of type <xsl:value-of select="@name"/> we're dealing with */
		<xsl:value-of select="concat($entityns, '.', @name)"/> record = null;

		if ( AllKeys()){
		/* it's (probably) existing, retrieve it */
		record = hibernator.CreateCriteria(typeof(<xsl:value-of select="concat( $entityns, '.', @name)"/>))
		<xsl:for-each select="adl:key/adl:property">
			<xsl:call-template name="add-hibernate-expression-eq">
				<xsl:with-param name="property" select="."/>
				<xsl:with-param name="value">Form["<xsl:value-of select="concat( 'instance.', @name)"/>"]</xsl:with-param>
			</xsl:call-template>
		</xsl:for-each>
		.UniqueResult&lt;<xsl:value-of select="concat( $entityns, '.', @name)"/>&gt;();
		}

		return record;
		}
		}
		}
		/* ---- [ cut here: next file 'junk'] ------------------------- */
	</xsl:template>

	<xsl:template match="adl:property">
		<xsl:if test="@required='true'">
			if ( String.IsNullOrEmpty( Form[ "<xsl:value-of select="concat( 'instance.', @name)"/>" ]))
			{
			AddError( <xsl:choose>
				<xsl:when test="adl:ifmissing[@locale=$locale]">
					<xsl:apply-templates select="adl:ifmissing[@locale=$locale]"/>
				</xsl:when>
				<xsl:otherwise>
					"<xsl:call-template name="i18n-value-required">
						<xsl:with-param name="property-name" select="@name"/>
					</xsl:call-template>"
				</xsl:otherwise>
			</xsl:choose>);
			}
		</xsl:if>
		<xsl:if test="@distinct='system' or @distinct='all'">
			<xsl:call-template name="check-property-value-distinct">
				<xsl:with-param name="property" select="."/>
			</xsl:call-template>
		</xsl:if>
	</xsl:template>

	<xsl:template match="adl:ifmissing">
		"<xsl:value-of select="normalize-space(.)"/>"
	</xsl:template>

	<xsl:template match="adl:form">
		/// &lt;summary&gt;
		/// Handle the submission of the form named <xsl:value-of select="@name"/>
		/// &lt;/summary&gt;
		[AccessibleThrough(Verb.Post)]
		public void <xsl:value-of select="concat( @name, 'SubmitHandler')"/>( ) {
		string command = Form[ "command"];

		if ( command == null) {
		throw new Exception( "<xsl:call-template name="i18n-command-not-found"/>");
		}
		else
		<xsl:for-each select=".//verb">
			if ( command.Equals( "<xsl:value-of select="@verb"/>"))
			{
			/* NOTE: You must write an implementation of this verb in a
			* manually maintained partial class file for this class */
			<xsl:value-of select="@verb"/>();
			}
			else
		</xsl:for-each>
		if ( command.Equals( "delete"))
		{
		ISession hibernator =
		NHibernateHelper.GetCurrentSession( <xsl:if test="$authentication-layer = 'Database'">
			Session[ NHibernateHelper.USERTOKEN],
			Session[NHibernateHelper.PASSTOKEN]
		</xsl:if>);

		<xsl:value-of select="concat($entityns, '.', ancestor::adl:entity/@name)"/> record = FetchRecord( hibernator);

		TypedPropertyBag = new {
		<xsl:if test="$authentication-layer = 'Database'">
			username = Session[ NHibernateHelper.USERTOKEN],
		</xsl:if>
		instance = record };

		RenderViewWithFailover( "maybedelete.vm", "maybedelete.auto.vm");
		}
		else if ( command.Equals( "store"))
		{
		Store();
		}
		else
		{
		throw new Exception( String.Format("<xsl:call-template name="i18n-command-not-found">
			<xsl:with-param name="command" select="'{0}'"/>
		</xsl:call-template>", command));
		}
		}

		/// &lt;summary&gt;
		/// Show the form named <xsl:value-of select="@name"/>, with no content
		/// &lt;/summary&gt;
		[AccessibleThrough(Verb.Get)]
		public void <xsl:value-of select="@name"/>( )
		{
		AssertUserCanRead();

		<xsl:value-of select="concat( 'this.', @name)"/>( (<xsl:value-of select="concat($entityns, '.', ancestor::adl:entity/@name)"/>)null);
		}


		/// &lt;summary&gt;
		/// Show the form named <xsl:value-of select="@name"/>, containing the indicated record. As
		/// the primary key of the record is itself an entity, we need to first fetch that entity
		/// &lt;/summary&gt;
		<xsl:for-each select="ancestor::adl:entity/adl:key/adl:property">
			<xsl:choose>
				<xsl:when test="@type='entity'">
					/// &lt;param name="<xsl:value-of select="@name"/>"&gt;the key value of the key value of the record to show&lt;/param&gt;
				</xsl:when>
				<xsl:otherwise>
					/// &lt;param name="<xsl:value-of select="@name"/>"&gt;the key value of the record to show&lt;/param&gt;
				</xsl:otherwise>
			</xsl:choose>
		</xsl:for-each>
		[AccessibleThrough(Verb.Get)]
		public void <xsl:value-of select="@name"/>( <xsl:for-each select="ancestor::adl:entity/adl:key/adl:property">
			<!-- all args are passed as string because that's what hibernate-expression-eq expects -->
			string <xsl:value-of select="concat( ' ', @name)"/>
			<xsl:if test="not( position() = last())">,</xsl:if>
		</xsl:for-each>) {
		ISession hibernator =
		NHibernateHelper.GetCurrentSession( <xsl:if test="$authentication-layer = 'Database'">
			Session[ NHibernateHelper.USERTOKEN],
			Session[NHibernateHelper.PASSTOKEN]
		</xsl:if>);
		<xsl:value-of select="concat( 'this.', @name)"/>(
		hibernator.CreateCriteria( typeof(<xsl:value-of select="concat($entityns, '.', ancestor::adl:entity/@name)"/>))
		<xsl:for-each select="ancestor::adl:entity/adl:key/adl:property">
			<xsl:call-template name="add-hibernate-expression-eq">
				<xsl:with-param name="property" select="."/>
				<xsl:with-param name="value" select="@name"/>
			</xsl:call-template>
		</xsl:for-each>
		.UniqueResult&lt;<xsl:value-of select="concat($entityns, '.', ancestor::adl:entity/@name)"/>&gt;());
		}

		/// &lt;summary&gt;
		/// Show the form named <xsl:value-of select="@name"/>, containing the indicated record
		/// &lt;/summary&gt;
		/// &lt;param name="record"&gt;the record to show&lt;/param&gt;
		protected void <xsl:value-of select="@name"/>( <xsl:value-of select="concat($entityns, '.', ancestor::adl:entity/@name)"/> record)
		{
		ISession hibernator =
		NHibernateHelper.GetCurrentSession( <xsl:if test="$authentication-layer = 'Database'">
			Session[ NHibernateHelper.USERTOKEN],
			Session[NHibernateHelper.PASSTOKEN]
		</xsl:if>);

		TypedPropertyBag = new {
		<xsl:if test="$authentication-layer = 'Database'">
			username = Session[ NHibernateHelper.USERTOKEN],
		</xsl:if>
		<xsl:call-template name="formmenus">
			<xsl:with-param name="form" select="."/>
		</xsl:call-template>
		instance = record };

		RenderViewWithFailover("<xsl:value-of select="concat( @name, '.vm')"/>", "<xsl:value-of select="concat( @name, '.auto.vm')"/>");
		}
	</xsl:template>

	<xsl:template match="adl:list">
		/// &lt;summary&gt;
		/// list all instances of this entity to allow the user to select one
		/// this method invokes the named view.
		/// &lt;/summary&gt;
		public void <xsl:value-of select="@name"/>()
		{
		InternalShowList( "<xsl:value-of select="@name"/>");
		}

	</xsl:template>

	<xsl:template match="adl:documentation">
		/* <xsl:apply-templates/> */
	</xsl:template>


	<xsl:template match="adl:key">
		<!-- the key shouldn't be matched directly - at least, not in this implementation -->
	</xsl:template>

	<!-- for properties with @distinct='all' or @distinct='system', 
		check that values are indeed distinct -->
	<xsl:template name="check-property-value-distinct">
		<xsl:param name="property"/>

		<xsl:variable name="basetype">
			<xsl:call-template name="base-type">
				<xsl:with-param name="property" select="."/>
			</xsl:call-template>
		</xsl:variable>

		<xsl:choose>
			<xsl:when test="$property/ancestor::adl:key and not( $property/ancestor::adl:entity/adl:key[position()=2])">
				<!-- if I'm the property of a key field and it is the only key field of my entity then
					it is pointless trying to establish my distinctness -->
			</xsl:when>
			<xsl:when test="$property/@distinct = 'system' or $property/@distinct='all'">
				/* <xsl:value-of select="$property/@name"/> should be distinct: check that it is */
				matchCriteria =
				hibernator.CreateCriteria(typeof(<xsl:value-of select="$property/ancestor::adl:entity/@name"/>));

				matchCriteria<xsl:call-template name="add-hibernate-expression-eq">
					<xsl:with-param name="property" select="$property"/>
					<xsl:with-param name="value">
						Form["<xsl:value-of select="concat( 'instance.', @name)"/>"]
					</xsl:with-param>
				</xsl:call-template>;

				if ( record != null) {
				/* i.e. we do have values for each of our key fields... */
				<xsl:for-each select="$property/ancestor::adl:entity/adl:key/adl:property[position()=1]">
					<xsl:variable name="keybasetype">
						<xsl:call-template name="base-type">
							<xsl:with-param name="property" select="."/>
						</xsl:call-template>
					</xsl:variable>
					matchCriteria.Add(Expression.Not(<xsl:call-template name="hibernate-expression-eq">
						<xsl:with-param name="property" select="."/>
						<xsl:with-param name="value">
							Form["<xsl:value-of select="concat( 'instance.', @name)"/>"]
						</xsl:with-param>
					</xsl:call-template>));
				</xsl:for-each>
				}

				if ( matchCriteria.List&lt;<xsl:value-of select="$property/ancestor::adl:entity/@name"/>&gt;().Count > 0)
				{
				AddError(
				String.Format("There is already a {0} with the {1} '{2}'",
				"<xsl:value-of select="$property/ancestor::adl:entity/@name"/>", "<xsl:value-of select="$property/@name"/>", Form["<xsl:value-of select="concat('instance.', $property/@name)"/>"]));
				}
			</xsl:when>
		</xsl:choose>
	</xsl:template>


	<!-- produce all menus for a given form: harder, but more efficient -->
	<xsl:template name="formmenus">
		<!-- an entity assumed to be of type adl:form -->
		<xsl:param name="form"/>
		<xsl:choose>
			<xsl:when test="$form/@properties = 'all'">
				<xsl:call-template name="entitymenus">
					<xsl:with-param name="entity" select="$form/ancestor::adl:entity"/>
				</xsl:call-template>
			</xsl:when>
			<xsl:otherwise>
				/* form menus */
				<xsl:for-each select="$form//adl:field">
					<xsl:variable name="propname" select="@property"/>
					<xsl:choose>
						<xsl:when test="parent::adl:auxlist"/>
						<xsl:when test="$form/ancestor::adl:entity/adl:property[@name=$propname and @type='entity']">
							/* produce a list of <xsl:value-of select="$form/ancestor::adl:entity/adl:property[@name=$propname]/@entity"/> to populate the select for <xsl:value-of select="$propname"/> */
							<xsl:call-template name="menu">
								<xsl:with-param name="property" select="$form/ancestor::adl:entity/adl:property[@name=$propname]"/>
							</xsl:call-template>
						</xsl:when>
						<xsl:when test="$form/ancestor::adl:entity/adl:property[@name=$propname and @type='link']">
							/* produce a list of <xsl:value-of select="$form/ancestor::adl:entity/adl:property[@name=$propname]/@entity"/> to populate the LHS of the shuffle for <xsl:value-of select="$propname"/> */
							<xsl:call-template name="menu">
								<xsl:with-param name="property" select="$form/ancestor::adl:entity/adl:property[@name=$propname]"/>
							</xsl:call-template>
						</xsl:when>
						<xsl:when test="$form/ancestor::adl:entity/adl:property[@name=$propname and @type='list']">
							/* produce a list of <xsl:value-of select="$form/ancestor::adl:entity/adl:property[@name=$propname]/@entity"/> to populate the multi-select for <xsl:value-of select="@name"/> */
							<xsl:call-template name="menu">
								<xsl:with-param name="property" select="$form/ancestor::adl:entity/adl:property[@name=$propname]"/>
							</xsl:call-template>
						</xsl:when>
					</xsl:choose>
				</xsl:for-each>
			</xsl:otherwise>
		</xsl:choose>
	</xsl:template>


	<!-- produce all menus for a given entity: easier, but less efficient -->
	<xsl:template name="entitymenus">
		<xsl:param name="entity"/>
		/* there's no way I can find of producing a set of just those entities
		* we'll need menus for. So we set up variables for all the menus we might
		* need, and then only instantiate those we do need. */
		<!-- xsl:for-each select="//adl:entity">
          IList&lt;<xsl:value-of select="concat( $entityns, '.', @name)"/>&gt; <xsl:value-of select="concat( 'all', @name)"/> = null;
		</xsl:for-each -->
		<xsl:for-each select="$entity//adl:property[@type='entity']">
			<!-- $entity//adl:property because it is possible to have type='entity' in the key -->
			<xsl:call-template name="menu">
				<xsl:with-param name="property" select="."/>
			</xsl:call-template>
		</xsl:for-each>
		<xsl:for-each select="$entity/adl:property[@type='link']">
			<!-- $entity/adl:property because it is not possible to have type='link' in the key -->
			/* produce a list of <xsl:value-of select="@entity"/> to populate the LHS of the shuffle for <xsl:value-of select="@name"/> */
			<xsl:call-template name="menu">
				<xsl:with-param name="property" select="."/>
			</xsl:call-template>
		</xsl:for-each>
		<xsl:for-each select="$entity/adl:property[@type='list']">
			/* produce a list of <xsl:value-of select="@entity"/> to populate the multi-select for <xsl:value-of select="@name"/> */
			<xsl:call-template name="menu">
				<xsl:with-param name="property" select="."/>
			</xsl:call-template>
		</xsl:for-each>

	</xsl:template>

	<xsl:template name="menu">
		<xsl:param name="property"/>
		<xsl:variable name="entity" select="//adl:entity[@name=$property/@entity]"/>
		<xsl:value-of select="concat('all_', $property/@name)"/> =
		<xsl:value-of select="concat( 'FetchAll', $entity/@name)"/>( NHibernateHelper.GetCurrentSession()),
	</xsl:template>

	<xsl:template name="primary-key-csharp-type">
		<xsl:param name="entity"/>
		<xsl:if test="not( $entity)">
			<xsl:message terminate="yes">
				ADL: ERROR: No entity passed to template primary-key-csharp-type
			</xsl:message>
		</xsl:if>
		<xsl:if test="not($entity/adl:key/adl:property)">
			<xsl:message terminate="no">
				ADL: WARNING: entity '<xsl:value-of select="$entity/@name"/>' has no primary key.
				You will have to manually edit <xsl:value-of select="concat( $entity/@name, 'Controller.auto.cs')"/>
			</xsl:message>
		</xsl:if>
		<xsl:call-template name="csharp-type">
			<xsl:with-param name="property" select="$entity/adl:key/adl:property[ position() = 1]"/>
			<xsl:with-param name="entityns" select="$entityns"/>
		</xsl:call-template>
	</xsl:template>

	<xsl:template name="primary-key-name">
		<!-- return the name of the primary key of the entity with this name -->
		<xsl:param name="entity"/>
		<xsl:if test="not($entity/adl:key)">
			<xsl:message terminate="yes">
				ADL: ERROR: No key for entity: <xsl:value-of select="$entity/@name"/>
			</xsl:message>
		</xsl:if>
		<xsl:choose>
			<xsl:when test="$entity/adl:key/adl:property[position()=2]">
				<xsl:message terminate="no">
					ADL: WARNING: Entity <xsl:value-of select="$entity/@name"/> has a composite primary key.
					You will need to manually edit <xsl:value-of select="concat( $entity/@name, 'Controller.auto.cs')"/>
				</xsl:message>
				<xsl:value-of select="$entity/adl:key/adl:property[position()=1]/@name"/>
			</xsl:when>
			<xsl:when test="$entity/adl:key/adl:property">
				<xsl:value-of select="$entity/adl:key/adl:property[position()=1]/@name"/>
			</xsl:when>
			<xsl:otherwise>
				<xsl:message terminate="no">
					ADL: WARNING: Entity <xsl:value-of select="$entity/@name"/> has no primary key.
					You will need to manually edit <xsl:value-of select="concat( $entity/@name, 'Controller.auto.cs')"/>
				</xsl:message>
			</xsl:otherwise>
		</xsl:choose>
	</xsl:template>

	<!-- it's often convenient to wrap an expression in an Add() -->
	<xsl:template name="add-hibernate-expression-eq">
		<xsl:param name="property"/>
		<xsl:param name="value"/>
		<xsl:variable name="basetype">
			<xsl:call-template name="base-type">
				<xsl:with-param name="property" select="$property"/>
			</xsl:call-template>
		</xsl:variable>
		.Add(<xsl:call-template name="hibernate-expression-eq">
			<xsl:with-param name="property" select="$property"/>
			<xsl:with-param name="value" select="$value"/>
		</xsl:call-template>)
	</xsl:template>

	<!-- it's often convenient to wrap an expression in an Add() -->
	<xsl:template name="add-hibernate-expression-like">
		<xsl:param name="property"/>
		<xsl:param name="value"/>
		<xsl:variable name="basetype">
			<xsl:call-template name="base-type">
				<xsl:with-param name="property" select="$property"/>
			</xsl:call-template>
		</xsl:variable>
		.Add(<xsl:call-template name="hibernate-expression-like">
			<xsl:with-param name="property" select="$property"/>
			<xsl:with-param name="value" select="$value"/>
		</xsl:call-template>)
	</xsl:template>

	<!-- generate a hibernate equality expression based on this property,
		comparing it to this value -->
	<xsl:template name="hibernate-expression-eq">
		<!-- an entity of type property -->
		<xsl:param name="property"/>
		<!-- an expression which, at run time, will evaluate to a string -->
		<xsl:param name="value"/>
		<xsl:variable name="basetype">
			<xsl:call-template name="base-type">
				<xsl:with-param name="property" select="$property"/>
			</xsl:call-template>
		</xsl:variable>
		Expression.Eq("<xsl:value-of select="$property/@name"/>", <xsl:choose>
			<xsl:when test="$basetype = 'string'">
				<xsl:value-of select="$value"/>
			</xsl:when>
			<xsl:when test="$basetype = 'integer'">
				Int32.Parse( <xsl:value-of select="$value"/>)
			</xsl:when>
			<xsl:when test="$basetype = 'money'">
				Decimal.Parse( <xsl:value-of select="$value"/>)
			</xsl:when>
			<xsl:when test="$basetype = 'date'">
				DateTime.Parse( <xsl:value-of select="$value"/>)
			</xsl:when>
			<xsl:when test="$basetype='entity'">
				<xsl:call-template name="fetch-property-instance">
					<xsl:with-param name="property" select="$property"/>
					<xsl:with-param name="value" select="$value"/>
				</xsl:call-template>
			</xsl:when>
			<xsl:otherwise>
				<xsl:message terminate="yes">
					ADL: Error: keys of type <xsl:value-of select="$basetype"/> cannot yet be used
					in links
				</xsl:message>
			</xsl:otherwise>
		</xsl:choose>)
	</xsl:template>

	<!-- generate a hibernate like expression based on this property,
		comparing it to this value -->
	<xsl:template name="hibernate-expression-like">
		<xsl:param name="property"/>
		<xsl:param name="value"/>
		<xsl:variable name="basetype">
			<xsl:call-template name="base-type">
				<xsl:with-param name="property" select="$property"/>
			</xsl:call-template>
		</xsl:variable>
		<xsl:choose>
			<xsl:when test="$basetype='string' or $basetype='text'">
				Expression.Like( "<xsl:value-of select="@name"/>", "%"+<xsl:value-of select="$value"/>+"%")
			</xsl:when>
			<xsl:otherwise>
				<xsl:call-template name="hibernate-expression-eq">
					<xsl:with-param name="property" select="$property"/>
					<xsl:with-param name="value" select="$value"/>
				</xsl:call-template>
			</xsl:otherwise>
		</xsl:choose>
	</xsl:template>

	<!-- argument: a property 
      returns 'true' if that property is of a type which makes it searchable,
      else 'false'. See also how search fields are generated in adl2views.xsl -->
	<xsl:template name="is-searchable">
		<xsl:param name="property"/>
		<xsl:variable name="base-type">
			<xsl:call-template name="base-type">
				<xsl:with-param name="property" select="$property"/>
			</xsl:call-template>
		</xsl:variable>
		<xsl:choose>
			<xsl:when test="$base-type='string'">true</xsl:when>
			<xsl:when test="$base-type='integer'">true</xsl:when>
			<xsl:when test="$base-type='real'">true</xsl:when>
			<xsl:when test="$base-type='money'">true</xsl:when>
			<xsl:when test="$base-type='text'">true</xsl:when>
			<xsl:when test="$base-type='entity'">true</xsl:when>
			<xsl:otherwise>false</xsl:otherwise>
		</xsl:choose>

	</xsl:template>

	<xsl:template name="fetch-property-instance">
		<!-- the property for which the instance is sought; it is assumed that
			the property passed has type 'entity' -->
		<xsl:param name="property"/>
		<!-- the name of the value in the returned values from which the instance
			must be resolved -->
		<xsl:param name="value"/>
		<xsl:variable name="basetype">
			<xsl:call-template name="base-type">
				<xsl:with-param name="property" select="$property"/>
			</xsl:call-template>
		</xsl:variable>
		<xsl:if test="not( $basetype='entity')">
			<xsl:message terminate="yes">
				ADL: ERROR: property passed to fetch-property-instance whose type is not 'entity'
			</xsl:message>
		</xsl:if>
		hibernator.CreateCriteria(typeof(<xsl:value-of select="concat( $entityns, '.', $property/@entity)"/>))
		<xsl:for-each select="//adl:entity[@name=$property/@entity]/adl:key/adl:property">
			<xsl:call-template name="add-hibernate-expression-eq">
				<xsl:with-param name="property" select="."/>
				<xsl:with-param name="value" select="$value"/>
			</xsl:call-template>
		</xsl:for-each>
		.UniqueResult&lt;<xsl:value-of select="concat( $entityns, '.', $property/@entity)"/>&gt;()
	</xsl:template>

</xsl:stylesheet>