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package oracle.toplink.essentials.internal.parsing;


/**
 * INTERNAL
 * <p><b>Purpose</b>: This is the superclass for the logical operators (NOT, AND, OR)
 * <p><b>Responsibilities</b>:<ul>
 * <li> Answer true if this node contains the passed node
 * </ul>
 *    @author Jon Driscoll and Joel Lucuik
 *    @since TopLink 4.0
 */
public class LogicalOperatorNode extends Node {

    /**
     * Return a new LogicalOperatorNode.
     */
    public LogicalOperatorNode() {
        super();
    }

    /**
     * INTERNAL
     * Validate node and calculate its type.
     */
    public void validate(ParseTreeContext context) {
        super.validate(context);
        if ((left != null) && (right != null)) {
            left.validateParameter(context, right.getType());
            right.validateParameter(context, left.getType());
        }
        
        TypeHelper typeHelper = context.getTypeHelper();
        setType(typeHelper.getBooleanType());
    }
}