static void extractTabAliasForCol(CubeQueryContext cubeql, TrackQueriedColumns tqc)
throws LensException {
Map<String, String> colToTableAlias = cubeql.getColToTableAlias();
Set<String> columns = tqc.getTblAliasToColumns().get(CubeQueryContext.DEFAULT_TABLE);
if (columns == null) {
return;
}
for (String col : columns) {
boolean inCube = false;
if (cubeql.getCube() != null) {
Set<String> cols = cubeql.getCube().getAllFieldNames();
if (cols.contains(col.toLowerCase())) {
String cubeAlias = cubeql.getAliasForTableName(cubeql.getCube().getName());
colToTableAlias.put(col.toLowerCase(), cubeAlias);
tqc.addColumnsQueried(cubeAlias, col.toLowerCase());
inCube = true;
}
}
for (Dimension dim : cubeql.getDimensions()) {
if (dim.getAllFieldNames().contains(col.toLowerCase())) {
if (!inCube) {
String prevDim = colToTableAlias.get(col.toLowerCase());
if (prevDim != null && !prevDim.equals(dim.getName())) {
throw new LensException(
LensCubeErrorCode.AMBIGOUS_DIM_COLUMN.getLensErrorInfo(),
col,
prevDim,
dim.getName());
}
String dimAlias = cubeql.getAliasForTableName(dim.getName());
colToTableAlias.put(col.toLowerCase(), dimAlias);
tqc.addColumnsQueried(dimAlias, col.toLowerCase());
} else {
// throw error because column is in both cube and dimension table
throw new LensException(
LensCubeErrorCode.AMBIGOUS_CUBE_COLUMN.getLensErrorInfo(),
col,
cubeql.getCube().getName(),
dim.getName());
}
}
}
if (colToTableAlias.get(col.toLowerCase()) == null) {
throw new LensException(LensCubeErrorCode.COLUMN_NOT_FOUND.getLensErrorInfo(), col);
}
}
}
