Examples of org.apache.lenya.workflow.Condition

org.apache.lenya.workflow.Condition
A condition can prevent a transition from firing, based on the current situation. Examples:
- Does the current user have a certain role on the current URL?
- Does a certain state variable have a certain value (e.g., is the document published)? (BooleanVariableCondition)
- Is the sun shining? (e.g., if the weather report may only be published on sunny days)

     * @throws WorkflowException when creating the condition failed.
     */
    protected static Condition createCondition(String className, String expression)
        throws WorkflowException {


        Condition condition;


        try {
            Class clazz = Class.forName(className);
            condition = (Condition) clazz.newInstance();
            condition.setExpression(expression);
        } catch (ClassNotFoundException e) {
            throw new WorkflowException(e);
        } catch (InstantiationException e) {
            throw new WorkflowException(e);
        } catch (IllegalAccessException e) {

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        // load conditions
        NodeList conditionElements =
            element.getElementsByTagNameNS(Workflow.NAMESPACE, CONDITION_ELEMENT);


        for (int i = 0; i < conditionElements.getLength(); i++) {
            Condition condition = buildCondition((Element) conditionElements.item(i));
            transition.addCondition(condition);
        }


        // load assignments
        NodeList assignmentElements =

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     * @throws WorkflowException when something went wrong.
     */
    protected static Condition buildCondition(Element element) throws WorkflowException {
        String className = element.getAttribute(CLASS_ATTRIBUTE);
        String expression = DocumentHelper.getSimpleElementText(element);
        Condition condition = ConditionFactory.createCondition(className, expression);


        return condition;
    }

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    protected static Condition createCondition(String className, String expression)
        throws WorkflowException {
        assert className != null;
        assert expression != null;


        Condition condition;


        try {
            Class clazz = Class.forName(className);
            condition = (Condition) clazz.newInstance();
            condition.setExpression(expression);
        } catch (ClassNotFoundException e) {
            throw new WorkflowException(e);
        } catch (InstantiationException e) {
            throw new WorkflowException(e);
        } catch (IllegalAccessException e) {

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        // load conditions
        NodeList conditionElements =
            element.getElementsByTagNameNS(Workflow.NAMESPACE, CONDITION_ELEMENT);


        for (int i = 0; i < conditionElements.getLength(); i++) {
            Condition condition = buildCondition((Element) conditionElements.item(i));
            transition.addCondition(condition);
        }


        // load assignments
        NodeList assignmentElements =

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     * @throws WorkflowException when something went wrong.
     */
    protected static Condition buildCondition(Element element) throws WorkflowException {
        String className = element.getAttribute(CLASS_ATTRIBUTE);
        String expression = DocumentHelper.getSimpleElementText(element);
        Condition condition = ConditionFactory.createCondition(className, expression);


        return condition;
    }

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        // load conditions
        NodeList conditionElements =
            element.getElementsByTagNameNS(Workflow.NAMESPACE, CONDITION_ELEMENT);


        for (int i = 0; i < conditionElements.getLength(); i++) {
            Condition condition = buildCondition((Element) conditionElements.item(i));
            transition.addCondition(condition);
        }


        // load assignments
        NodeList assignmentElements =

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     * @throws WorkflowException when something went wrong.
     */
    protected static Condition buildCondition(Element element) throws WorkflowException {
        String className = element.getAttribute(CLASS_ATTRIBUTE);
        String expression = DocumentHelper.getSimpleElementText(element);
        Condition condition = ConditionFactory.createCondition(className, expression);


        return condition;
    }

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Related Classes of org.apache.lenya.workflow.Condition

org.apache.lenya.workflow.impl.ConditionFactory

org.apache.lenya.workflow.impl.WorkflowBuilder

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