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org.apache.lenya.workflow
Interface Condition

All Known Implementing Classes:

AbstractCondition, BooleanVariableCondition, RoleCondition

public interface 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)

Method Summary

boolean	isComplied(Situation situation, WorkflowInstance instance) Returns if the condition is complied in a certain situation.
void	setExpression(java.lang.String expression) Sets the expression for this condition.

Method Detail

isComplied

boolean isComplied(Situation situation,
                   WorkflowInstance instance)
                   throws WorkflowException

Returns if the condition is complied in a certain situation.

Parameters:

situation - The situation to check.

instance - The workflow instance to check the condition on.

Returns:

if the condition is complied.

Throws:

WorkflowException - when the expression could not be evaluated.

setExpression

void setExpression(java.lang.String expression)
                   throws WorkflowException

Sets the expression for this condition.

Parameters:

expression - The expression.

Throws:

WorkflowException - when the expression is not valid.