判断某个维度值是否存在

public static boolean exitsDimension(OMOperatingUnitType _omOperatingUnitType, //运营单位类型
                                     OMOperatingUnitNumber _omOperatingUnitNumber, //运营单位编号
                                     DataAreaId _dataAreaId = curext()) //公司
{
    OMInternalOrganization omInternalOrganization;
    OMOperatingUnit omOperatingUnit;
    select firstOnly RecId from omInternalOrganization
        where omInternalOrganization.OrganizationType == OMInternalOrganizationType::OperatingUnit
    exists join omOperatingUnit
        where omOperatingUnit.RecId == omInternalOrganization.RecId
            && omOperatingUnit.OMOperatingUnitType == _omOperatingUnitType
            && omOperatingUnit.OMOperatingUnitNumber == _omOperatingUnitNumber;
    return omInternalOrganization.RecId ? true :false;
}