tai.setAlias(top.getConf().getAlias());
tai.setTable(tab);
for(ColumnInfo ci : rs.getSignature()) {
// Create a dependency
Dependency dep = new Dependency();
BaseColumnInfo bci = new BaseColumnInfo();
bci.setTabAlias(tai);
bci.setColumn(fieldSchemaMap.get(ci.getInternalName()));
// Populate the dependency
dep.setType(LineageInfo.DependencyType.SIMPLE);
// TODO: Find out how to get the expression here.
dep.setExpr(null);