* @return the left and right parenthesis in [0] and [1] of the String[]
*/
public static String[] getLeftAndRightExpressions(PRelationalExpression relationalExpression)
{
String[] expressions = new String[2];
ARelationalExpression expression = (ARelationalExpression)relationalExpression;
// set the left expression
expressions[0] = TranslationUtils.trimToEmpty(expression.getAdditiveExpression());
ARelationalExpressionTail expressionTail = (ARelationalExpressionTail)expression.getRelationalExpressionTail();
// set the right expression
expressions[1] = TranslationUtils.trimToEmpty(expressionTail.getAdditiveExpression());
return expressions;