return new TrimResult(join, Mappings.createIdentity(fieldCount)); newJoinFilters); return new TrimResult(newJoin, mapping);
return new TrimResult(join, Mappings.createIdentity(fieldCount)); newJoinFilters); return new TrimResult(newJoin, mapping);
protected TrimResult result(RelNode r, final Mapping mapping) { final RexBuilder rexBuilder = relBuilder.getRexBuilder(); for (final CorrelationId correlation : r.getVariablesSet()) { r = r.accept( new CorrelationReferenceFinder() { protected RexNode handle(RexFieldAccess fieldAccess) { final RexCorrelVariable v = (RexCorrelVariable) fieldAccess.getReferenceExpr(); if (v.id.equals(correlation) && v.getType().getFieldCount() == mapping.getSourceCount()) { final int old = fieldAccess.getField().getIndex(); final int new_ = mapping.getTarget(old); final RelDataTypeFactory.Builder typeBuilder = relBuilder.getTypeFactory().builder(); for (int target : Util.range(mapping.getTargetCount())) { typeBuilder.add( v.getType().getFieldList().get(mapping.getSource(target))); } final RexNode newV = rexBuilder.makeCorrel(typeBuilder.build(), v.id); if (old != new_) { return rexBuilder.makeFieldAccess(newV, new_); } } return fieldAccess; } }); } return new TrimResult(r, mapping); }
protected TrimResult result(RelNode r, final Mapping mapping) { final RexBuilder rexBuilder = relBuilder.getRexBuilder(); for (final CorrelationId correlation : r.getVariablesSet()) { r = r.accept( new CorrelationReferenceFinder() { protected RexNode handle(RexFieldAccess fieldAccess) { final RexCorrelVariable v = (RexCorrelVariable) fieldAccess.getReferenceExpr(); if (v.id.equals(correlation) && v.getType().getFieldCount() == mapping.getSourceCount()) { final int old = fieldAccess.getField().getIndex(); final int new_ = mapping.getTarget(old); final RelDataTypeFactory.Builder typeBuilder = relBuilder.getTypeFactory().builder(); for (int target : Util.range(mapping.getTargetCount())) { typeBuilder.add( v.getType().getFieldList().get(mapping.getSource(target))); } final RexNode newV = rexBuilder.makeCorrel(typeBuilder.build(), v.id); if (old != new_) { return rexBuilder.makeFieldAccess(newV, new_); } } return fieldAccess; } }); } return new TrimResult(r, mapping); }
protected TrimResult result(RelNode r, final Mapping mapping) { return new TrimResult(r, mapping); } }