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package javax.faces.flow.builder;

import javax.el.ValueExpression;

/**
 * <p class="changed_added_2_2">Create a case in the current switch.</p>
 * 
 * @since 2.2
 */
public abstract class SwitchCaseBuilder {
    
    /**
     * 
     * <p class="changed_added_2_2">Create a new case in the current switch.</p>
     * 
     * @since 2.2
     * 
     */
    public abstract SwitchCaseBuilder switchCase();
        
    /**
     * 
     * <p class="changed_added_2_2">Set the if in the previously created switch case.</p>
     * 
     * @param expression the {@code ValueExpression} to be evaluated to see if this case
     * is chosen.
     * 
     * @throws NullPointerException if any of the parameters are {@code null}
     * @since 2.2
     * 
     */
    public abstract SwitchCaseBuilder condition(ValueExpression expression);
    
    /**
     * 
     * <p class="changed_added_2_2">Set the if in the previously created switch case.</p>
     * 
     * @param expression the {@code ValueExpression} String to be evaluated to see if this case
     * is chosen.
     * 
     * @throws NullPointerException if any of the parameters are {@code null}
     * @since 2.2
     * 
     */
    public abstract SwitchCaseBuilder condition(String expression);
    
    /**
     * 
     * <p class="changed_added_2_2">Set the outcome in the previously created switch case.</p>
     * 
     * @param outcome the outcome to be returned if the condition evaluates to {@code true}.
     * 
     * @throws NullPointerException if any of the parameters are {@code null}
     * @since 2.2
     * 
     */
    public abstract SwitchCaseBuilder fromOutcome(String outcome);
        
}
