public boolean validate() throws SPLException
{
logger.entering(sourceClass,Thread.currentThread().getName()+" "+ "validate");
TypeInfo lType = _lhsExp.getType();
TypeInfo rType = _rhsExp.getType();
//System.out.println("lType:rType " + lType + " " + rType);
if(!lType.getIsArray() && !rType.getIsArray())
{
if (TypeResolver.isTypeAssignableForRelation(lType, rType))
{
_dataType.setType(TypeConstants.booleanType);
logger.exiting(sourceClass,Thread.currentThread().getName()+" "+ "validate");