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JSR-000344: JavaServer(TM) Faces 2.2 API
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package javax.faces.flow.builder;

import java.util.List;
import javax.el.MethodExpression;
import javax.el.ValueExpression;
import javax.faces.flow.Parameter;

/**
 * Create a method call node in the current {@link javax.faces.flow.Flow}.
 * @since 2.2
 */
public abstract class MethodCallBuilder implements NodeBuilder {
    
    /**
     * Set the method expression of this method call node.  The method
     * signature of the argument {@code methodExpression} must match the number and
     * type of the parameters passed in the {@link #parameters} method.
     * 
     * @param methodExpression The {@code MethodExpression} to invoke.

     * @throws NullPointerException if any of the parameters are {@code null}
     * 
     * @since 2.2
     */
    public abstract MethodCallBuilder expression(MethodExpression methodExpression);
    
    /**
     * Set the method expression of this method call node.  The method
     * signature of the argument {@code methodExpression} must match the number and
     * type of the parameters passed in the {@link #parameters} method.
     * 
     * @param methodExpression The {@code MethodExpression} String to invoke.

     * @throws NullPointerException if any of the parameters are {@code null}
     * 
     * @since 2.2
     */
    public abstract MethodCallBuilder expression(String methodExpression);
    
    /**
     * Set the method expression of this method call node.  The method
     * signature of the argument {@code methodExpression} must match the number and
     * type of the parameters passed in the {@link #parameters} method.
     * 
     * @param methodExpression The {@code MethodExpression} to invoke.
     * @param paramTypes the types of the parameters to the method.

     * @throws NullPointerException if any of the parameters are {@code null}
     * 
     * @since 2.2
     */
    public abstract MethodCallBuilder expression(String methodExpression, Class [] paramTypes);
    
    /**
     * Set the parameters of the method call node.
     * 
     * @param parameters the parameters to pass to the method when it is invoked.

     * @throws NullPointerException if any of the parameters are {@code null}
     * 
     * @since 2.2
     */
    public abstract MethodCallBuilder parameters(List parameters);
    
    /**
     * If the method is a void method, or the
     * method returns {@code null}, this can be used to specify what value 
     * should be passed to runtime when the method returns.
     * 
     * @param outcome A {@code ValueExpression} String representing 
     * the default outcome, only used if the method is a void
     * method or returns {@code null}.

     * @throws NullPointerException if any of the parameters are {@code null}
     * 
     * @since 2.2
     */
    public abstract MethodCallBuilder defaultOutcome(String outcome);
    
    /**
     * If the method is a void method, or the
     * method returns {@code null}, this can be used to specify what value 
     * should be passed to runtime when the method returns.
     * 
     * @param outcome A {@code ValueExpression} representing 
     * the default outcome, only used if the method is a void
     * method or returns {@code null}.

     * @throws NullPointerException if any of the parameters are {@code null}
     * 
     * @since 2.2
     */
    public abstract MethodCallBuilder defaultOutcome(ValueExpression outcome);

    @Override
    public abstract MethodCallBuilder markAsStartNode();
    
}