public void addSelectAlias(String alias, String spacedAlias) {
selectAliases.add(alias);
if (!StringUtils.isBlank(spacedAlias)) {
selectFinalAliases.add("`" + spacedAlias + "`");
} else {
selectFinalAliases.add(alias);
}
}
private void getQLString(
QBJoinTree joinTree,
StringBuilder builder,
CandidateFact fact,
Map<Dimension, CandidateDim> dimsToQuery)
throws LensException {
List<String> joiningTables = new ArrayList<>();
if (joinTree.getBaseSrc()[0] == null) {
if (joinTree.getJoinSrc() != null) {
getQLString(joinTree.getJoinSrc(), builder, fact, dimsToQuery);
}
} else { // (joinTree.getBaseSrc()[0] != null){
String alias = joinTree.getBaseSrc()[0].toLowerCase();
builder.append(getStorageStringWithAlias(fact, dimsToQuery, alias));
joiningTables.add(alias);
}
if (joinTree.getJoinCond() != null) {
builder.append(JoinUtils.getJoinTypeStr(joinTree.getJoinCond()[0].getJoinType()));
builder.append(" JOIN ");
}
if (joinTree.getBaseSrc()[1] == null) {
if (joinTree.getJoinSrc() != null) {
getQLString(joinTree.getJoinSrc(), builder, fact, dimsToQuery);
}
} else { // (joinTree.getBaseSrc()[1] != null){
String alias = joinTree.getBaseSrc()[1].toLowerCase();
builder.append(getStorageStringWithAlias(fact, dimsToQuery, alias));
joiningTables.add(alias);
}
String joinCond = joinConds.get(joinTree);
if (joinCond != null) {
builder.append(" ON ");
builder.append(joinCond);
// joining tables will contain all tables involved in joins.
// we need to push storage filters for Dimensions into join conditions, thus the following
// code
// takes care of the same.
for (String joiningTable : joiningTables) {
if (cubeTbls.get(joiningTable) instanceof Dimension) {
DimOnlyHQLContext.appendWhereClause(
builder, getWhereClauseWithAlias(dimsToQuery, joiningTable), true);
dimsToQuery.get(cubeTbls.get(joiningTable)).setWhereClauseAdded(joiningTable);
}
}
} else {
throw new LensException(LensCubeErrorCode.NO_JOIN_CONDITION_AVAILABLE.getLensErrorInfo());
}
}