예제 #1
0
 private void combineParts(
     MultiMap<Part, ColumnKey> needed,
     MultiMap<ColumnKey, Part> classified,
     List<ExpressionNode> andexprs,
     List<Part> andparts) {
   Part p = needed.keySet().iterator().next();
   Collection<ColumnKey> missing = needed.get(p);
   if (missing == null || missing.isEmpty()) {
     andexprs.add((ExpressionNode) p.getParent());
     needed.remove(p);
     andparts.add(p);
     return;
   }
   ListSet<Part> containingMissing = new ListSet<Part>();
   boolean first = true;
   for (ColumnKey ck : missing) {
     Collection<Part> matching = classified.get(ck);
     if (matching == null || matching.isEmpty()) continue;
     if (first) containingMissing.addAll(matching);
     else {
       containingMissing.retainAll(matching);
     }
   }
   if (containingMissing.isEmpty()) {
     andexprs.add((ExpressionNode) p.getParent());
     andparts.add(p);
     needed.remove(p);
   } else {
     ListSet<Part> toCombine = new ListSet<Part>();
     toCombine.add(p);
     toCombine.addAll(containingMissing);
     ListSet<Part> toRemove = new ListSet<Part>();
     toRemove.addAll(toCombine);
     Part clhs = choosePartForAndCombo(toCombine);
     toCombine.remove(clhs);
     while (!toCombine.isEmpty()) {
       Part crhs = choosePartForAndCombo(toCombine);
       toCombine.remove(crhs);
       clhs = combineParts(clhs, crhs);
     }
     for (Part rp : toRemove) {
       needed.remove(rp);
       ArrayList<ColumnKey> classKeys = new ArrayList<ColumnKey>(classified.keySet());
       for (ColumnKey ck : classKeys) {
         Collection<Part> sub = classified.get(ck);
         if (sub == null || sub.isEmpty()) continue;
         if (sub.contains(rp)) classified.remove(ck, rp);
       }
     }
     andexprs.add((ExpressionNode) clhs.getParent());
     andparts.add(clhs);
   }
 }
예제 #2
0
    private LanguageNode handleAndFunction(FunctionCall fc) {
      // and functions take incomplete simple parts and turn them into complete parts, if so desired
      ArrayList<Part> incompletes = new ArrayList<Part>();
      ArrayList<ExpressionNode> ok = new ArrayList<ExpressionNode>();
      ArrayList<Part> subparts = new ArrayList<Part>();
      for (ExpressionNode en : fc.getParameters()) {
        Part p = state.get(en);
        if (p == null || p.isComplete()) {
          ok.add(en);
          if (p != null) subparts.add(p);
          continue;
        }
        incompletes.add(p);
      }
      if (incompletes.isEmpty()) return fc;

      // now we have the problem of a mishmash of incompletes.  some may be complex, some may be
      // simple
      // some may be collections.  we need to handle cases like the following:
      // (a = 1) and (b = 2) {a,b} (1 key)
      // (a = 1) and (b = 2 or b = 3) {a,b} (2 keys)
      // (a = 1 or a = 2) and (b = 3) {a,b} (2 keys)
      // (a = 1 or a = 2) and (b = 3 or b = 4) {a,b} (4 keys here)
      // all of the above, where the result is still not complete due to missing tenant column

      MultiMap<Part, ColumnKey> needed = new MultiMap<Part, ColumnKey>();
      MultiMap<ColumnKey, Part> classified = new MultiMap<ColumnKey, Part>();
      for (Part p : incompletes) {
        ListSet<ColumnKey> has = new ListSet<ColumnKey>();
        has.addAll(p.getColumns());
        needed.putAll(p, parent.getNeeded(has));
        for (ColumnKey ck : has) {
          classified.put(ck, p);
        }
      }
      // so let's say we have a part that is (a = 1 and b = 2), needs c and tenant, and we have a
      // part
      // that is c in (1,2,3).  The needed for (a = 1 and b = 2) is {c,tenant}.  we'll pull (c in
      // (1,2,3))
      // so we'll get at least (a = 1 and b = 2 and c = 3) or (a = 1 and b =2 and c = 3) ...
      // these we can then individually try to complete.

      while (!needed.isEmpty()) {
        combineParts(needed, classified, ok, subparts);
      }
      for (Part p : subparts) state.put(p.getParent(), p);
      if (ok.size() == 1) return ok.get(0);
      else {
        // what's left is a mix of unrelated and complete or incomplete subexprs.  unrelated nodes
        // would come in from above, as would previously complete.
        return new FunctionCall(FunctionName.makeAnd(), ok);
      }
    }
 @Override
 public void plan(SchemaContext sc, ExecutionSequence es, BehaviorConfiguration config)
     throws PEException {
   MultiMap<PEDatabase, PETable> plain = new MultiMap<PEDatabase, PETable>();
   MultiMap<PEDatabase, PETable> fks = new MultiMap<PEDatabase, PETable>();
   MultiMap<PEDatabase, PEViewTable> views = new MultiMap<PEDatabase, PEViewTable>();
   AddStorageSiteStatement.sortTablesOnGroup(sc, onGroup, plain, fks, views);
   ListSet<PEDatabase> dbs = new ListSet<PEDatabase>();
   dbs.addAll(views.keySet());
   dbs.addAll(plain.keySet());
   dbs.addAll(fks.keySet());
   Pair<List<PEAbstractTable<?>>, Boolean> tableDeclOrder =
       AddStorageSiteStatement.buildTableDeclOrder(sc, plain, fks);
   MultiMap<RangeDistribution, PETable> tablesByRange = new MultiMap<RangeDistribution, PETable>();
   for (PEAbstractTable<?> abst : tableDeclOrder.getFirst()) {
     if (abst.isView()) continue;
     PETable pet = abst.asTable();
     if (pet.getDistributionVector(sc).isRange()) {
       RangeDistributionVector rdv = (RangeDistributionVector) pet.getDistributionVector(sc);
       tablesByRange.put(rdv.getRangeDistribution().getDistribution(sc), pet);
     }
   }
   List<AddStorageGenRangeInfo> rangeInfo = buildRangeInfo(sc, tablesByRange);
   /*
   for(AddStorageGenRangeInfo info : rangeInfo) {
   	info.display(System.out);
   }
   */
   es.append(
       new ComplexDDLExecutionStep(
           null,
           onGroup,
           null,
           Action.ALTER,
           new RebalanceCallback(onGroup, rangeInfo, tableDeclOrder.getSecond())));
 }
예제 #4
0
 protected ListSet<Part> getCompletedParts() {
   if (stopped) return null;
   ListSet<Part> cols = new ListSet<Part>();
   for (Part p : completedParts) {
     if (p instanceof OredParts) cols.add(p);
   }
   completedParts.removeAll(cols);
   for (Part p : cols) {
     for (Part sp : p.getParts()) {
       completedParts.remove(sp);
     }
   }
   completedParts.addAll(cols);
   return completedParts;
 }
예제 #5
0
 private Part buildNewComplexPart(Part lp, Part rp) {
   ListSet<Part> allParts = new ListSet<Part>();
   allParts.addAll(lp.getParts());
   allParts.addAll(rp.getParts());
   FunctionCall andCall =
       new FunctionCall(
           FunctionName.makeAnd(), Functional.apply(allParts, Part.castToExpression));
   AndedParts cp = parent.buildAndedParts(andCall, allParts);
   if (parent.isComplete(cp)) {
     setComplete(cp);
   } else if (!parent.isComplete(cp)) {
     AndedParts ncp = parent.maybeMakeComplete(cp);
     if (ncp != null) {
       setComplete(ncp);
       return ncp;
     }
   }
   return cp;
 }
예제 #6
0
 public OredParts(LanguageNode parent, TableKey tk, Collection<Part> p) {
   super(parent, tk);
   parts = new ListSet<Part>();
   parts.addAll(p);
   ((ExpressionNode) parent).setGrouped();
 }