private void initResolverForColumnIfApplicable() {
assert this.tqi != null;
AbstractRegion rgn = this.tqi.getRegion();
GfxdPartitionResolver rslvr = GemFireXDUtils.getResolver(rgn);
if (rslvr != null && rslvr.isUsedInPartitioning(this.actualColumnName)) {
this.resolver = rslvr;
this.partitioningColPos = rslvr.getPartitioningColumnIndex(this.actualColumnName);
}
}
private void initResolverForOuterScopeColumn(
ColumnReference cr, QueryInfoContext qic, Scope owningScope) throws StandardException {
// we want to find the following:
// The owning table's Resolver so that we can find the column number as per
// colocation criteria.
// That column number will be the same as the root table's colocation column
// number.
final int tableNumber = cr.getTableNumber();
DMLQueryInfo owningDML = owningScope.getDMLQueryInfo();
this.tqi = owningDML.getTableQueryInfo(tableNumber);
this.initResolverForColumnIfApplicable();
SubQueryInfo sqi = (SubQueryInfo) qic.getCurrentScopeQueryInfo();
// Now the partitioning column position is correctly set based on the owning region's resolver
// of outer scope,
// in case it is a partitioned table
// Now we need the resolver of the independent PR based table ( i.e if this column is part of
// resolver.)
// the partitioning column position will remain unchanged.
if (this.resolver != null) {
// Check if the owning scope's level is less than independent PR scope level. If yes throw
// exception
int independentPRScopeLevel = sqi.getLastPushedPRBasedIndependentScopeLevel();
if (owningScope.getScopeLevel() < independentPRScopeLevel) {
throw StandardException.newException(SQLState.COLOCATION_CRITERIA_UNSATISFIED);
}
// reset the resolver to the immediate independent query. Note that from this point onwards
// the resolver will not point to that
// of owning region but that of immediate independent PR query's resolver. Though rest of the
// data will point correctly
// to owning table
// This will be the master table of the independent query on which we will base our colocation
// criteria
AbstractRegion master = qic.getScopeAt(independentPRScopeLevel).getDMLQueryInfo().getRegion();
assert master.getDataPolicy().withPartitioning();
this.resolver = GemFireXDUtils.getResolver(master);
}
}
