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<h1>Workflow Configuration</h1>
<div id="front-matter">
<div id="minitoc-area">
<ul class="minitoc">
<li>
<a href="#Workflow+Schemas">Workflow Schemas</a>
</li>
<li>
<a href="#States">States</a>
</li>
<li>
<a href="#Variables">Variables</a>
</li>
<li>
<a href="#Transitions">Transitions</a>
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<a href="#Variable+Assignments">Variable Assignments</a>
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<a href="#RoleCondition">RoleCondition</a>
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<a href="#Assigning+Workflow+Schemas+to+Document+Types">Assigning Workflow Schemas to Document Types</a>
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<a name="N10011"></a><a name="Workflow+Schemas"></a>
<h2 class="h3">Workflow Schemas</h2>
<div class="section">
<p>The workflow schema definition files of a publication are located at</p>
<pre class="code">
{publication}/config/workflow/
</pre>
<p>
A workflow schema definition looks as follows:
</p>
<pre class="code">
&lt;workflow xmlns="http://apache.org/cocoon/lenya/workflow/1.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://apache.org/cocoon/lenya/workflow/1.0
../../../resources/entities/workflow/workflow.xsd"&gt;
&lt;state id="authoring" initial="true"/&gt;
&lt;state id="live"/&gt;
&lt;state id="trash"/&gt;
&lt;state id="archive"/&gt;
&lt;variable name="is_live" value="false"/&gt;
&lt;transition source="authoring" destination="authoring"&gt;
&lt;event id="edit"/&gt;
&lt;condition class="org.apache.lenya.cms.workflow.RoleCondition"&gt;
edit, review, organize
&lt;/condition&gt;
&lt;/transition&gt;
&lt;transition source="authoring" destination="authoring"&gt;
&lt;event id="deactivate"/&gt;
&lt;condition class="org.apache.lenya.workflow.impl.BooleanVariableCondition"&gt;
is_live = true
&lt;/condition&gt;
&lt;condition class="org.apache.lenya.cms.workflow.RoleCondition"&gt;
review, organize
&lt;/condition&gt;
&lt;assign variable="is_live" value="false"/&gt;
&lt;/transition&gt;
...
&lt;/workflow&gt;
</pre>
<p>The workflow namespace URI is</p>
<pre class="code">http://apache.org/cocoon/lenya/workflow/1.0</pre>
</div>
<a name="N1002C"></a><a name="States"></a>
<h2 class="h3">States</h2>
<div class="section">
<p>
All states that are used in the workflow schema have to be declared
using <span class="codefrag">&lt;state&gt;</span> elements. The initial state is
marked with the <span class="codefrag">initial="true"</span> attribute.
</p>
</div>
<a name="N1003B"></a><a name="Variables"></a>
<h2 class="h3">Variables</h2>
<div class="section">
<p>
All used variables have to be declared using <span class="codefrag">&lt;variable&gt;</span>
elements. The initial value of the variable is assigned using the
<span class="codefrag">value</span> attribute.
</p>
</div>
<a name="N1004A"></a><a name="Transitions"></a>
<h2 class="h3">Transitions</h2>
<div class="section">
<p>
A transition is declared using the <span class="codefrag">&lt;transition&gt;</span> element.
The required attributes <span class="codefrag">source</span> and <span class="codefrag">destination</span>
denote the states that are connected by this transition.
</p>
<p>
The transition element must contain one <span class="codefrag">&lt;event&gt;</span> element
with an <span class="codefrag">id</span> attribute. Furthermore, it can contain an
arbitrary number of <span class="codefrag">&lt;condition&gt;</span> and <span class="codefrag">&lt;assign&gt;</span>
elements.
</p>
<p>
A transition element can have a <span class="codefrag">synchronized="true"</span> attribute.
In this case, if the transition is triggered using a
<em>SynchronizedWorkflowInstance</em>, it is invoked on all instances.
</p>
</div>
<a name="N10074"></a><a name="Variable+Assignments"></a>
<h2 class="h3">Variable Assignments</h2>
<div class="section">
<p>A variable assignment has the form</p>
<pre class="code">&lt;assign variable="..." value="..."/&gt;</pre>
<p>
The variable must have been declared in this workflow schema.
Because only boolean variables are supported, <span class="codefrag">value</span> must
be either <span class="codefrag">true</span> or <span class="codefrag">false</span>.
</p>
</div>
<a name="N1008D"></a><a name="Conditions"></a>
<h2 class="h3">Conditions</h2>
<div class="section">
<p>A condition has the form</p>
<pre class="code">&lt;condition class="..."&gt;...&lt;/condition&gt;</pre>
<p>The <span class="codefrag">class</span> attribute contains the complete name
(including the package) of the condition class. You can use the
condition classes that ship with Lenya (see below) or implement your
own conditions. All condition classes must implement the
<span class="codefrag">org.apache.lenya.workflow.Condition</span> interface.
The text inside the element is the expression that should
be evaluated. It is passed as an argument to the <span class="codefrag">setExpression()</span>
method.
</p>
<a name="N100A5"></a><a name="BooleanVariableCondition"></a>
<h3 class="h4">BooleanVariableCondition</h3>
<p>The <em>org.apache.lenya.workflow.impl.BooleanVariableCondition</em> requires
an expression of the form</p>
<pre class="code">{variable-name} = {value}</pre>
<p>
<span class="codefrag">{variable-name}</span> is the name of a variable that
was declared in the workflow schema. <span class="codefrag">{value}</span> is either
<span class="codefrag">true</span> or <span class="codefrag">false</span>.</p>
<a name="N100C3"></a><a name="RoleCondition"></a>
<h3 class="h4">RoleCondition</h3>
<p>The <em>org.apache.lenya.cms.workflow.RoleCondition</em> requires a
comma-separated list of role IDs:
</p>
<pre class="code">{role-id-1}, {role-id-2}, ...</pre>
<p>
The condition is complied when the current identity has one
of these roles on the requested URL.
</p>
</div>
<a name="N100D7"></a><a name="Assigning+Workflow+Schemas+to+Document+Types"></a>
<h2 class="h3">Assigning Workflow Schemas to Document Types</h2>
<div class="section">
<p>A workflow schema can be assigned to a document type in</p>
<pre class="code">
{publication}/config/doctypes/doctypes.xconf
</pre>
<pre class="code">&lt;doctypes&gt;
&lt;doc type="content-page"&gt;
...
&lt;workflow src="workflow.xml"/&gt;
&lt;/doc&gt;
...
&lt;/doctypes&gt;</pre>
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