private void extractMetaTables() throws LensException {
List<String> tabAliases = new ArrayList<String>(qb.getTabAliases());
Set<String> missing = new HashSet<String>();
for (String alias : tabAliases) {
boolean added = addQueriedTable(alias);
if (!added) {
missing.add(alias);
}
}
for (String alias : missing) {
// try adding them as joinchains
boolean added = addJoinChain(alias, false);
if (!added) {
log.info("Queried tables do not exist. Missing table:{}", alias);
throw new LensException(LensCubeErrorCode.NEITHER_CUBE_NOR_DIMENSION.getLensErrorInfo());
}
}
}
private boolean addJoinChain(String alias, boolean isOptional) throws LensException {
boolean retVal = false;
String aliasLowerCaseStr = alias.toLowerCase();
JoinChain joinchain = null;
if (getCube() != null) {
JoinChain chainByName = getCube().getChainByName(aliasLowerCaseStr);
if (chainByName != null) {
joinchain = chainByName;
retVal = true;
}
}
if (!retVal) {
for (Dimension table : dimensions) {
JoinChain chainByName = table.getChainByName(aliasLowerCaseStr);
if (chainByName != null) {
joinchain = chainByName;
retVal = true;
break;
}
}
}
if (retVal) {
joinchains.put(aliasLowerCaseStr, new JoinChain(joinchain));
String destTable = joinchain.getDestTable();
boolean added = addQueriedTable(alias, destTable, isOptional, true);
if (!added) {
log.info("Queried tables do not exist. Missing tables:{}", destTable);
throw new LensException(LensCubeErrorCode.NEITHER_CUBE_NOR_DIMENSION.getLensErrorInfo());
}
log.info("Added join chain for {}", destTable);
return true;
}
return retVal;
}
