public VirtualDWViewImpl(
VirtualDWViewFactory factory,
AgentInstanceContext agentInstanceContext,
VirtualDataWindow dataExternal)
{
this._factory = factory;
this._agentInstanceContext = agentInstanceContext;
this._dataExternal = dataExternal;
}
public SubordTableLookupStrategyVDW(
VirtualDWViewFactory factory,
SubordTableLookupStrategyFactoryVDW subordTableFactory,
VirtualDataWindowLookup externalIndex)
{
this.factory = factory;
this.externalIndex = externalIndex;
nwOnTrigger = subordTableFactory.IsNwOnTrigger;
var hashKeys = subordTableFactory.HashEvals;
var hashCoercionTypes = subordTableFactory.HashCoercionTypes;
var rangeKeys = subordTableFactory.RangeEvals;
var rangeCoercionTypes = subordTableFactory.RangeCoercionTypes;
evaluators = new ExternalEvaluator[hashKeys.Length + rangeKeys.Length];
eventsLocal = new EventBean[subordTableFactory.NumOuterStreams + 1];
var count = 0;
foreach (var hashKey in hashKeys) {
evaluators[count] = new ExternalEvaluatorHashRelOp(hashKeys[count], hashCoercionTypes[count]);
count++;
}
for (var i = 0; i < rangeKeys.Length; i++) {
var rangeKey = rangeKeys[i];
if (rangeKey.Type.IsRange()) {
var range = (QueryGraphValueEntryRangeIn) rangeKey;
var evaluatorStart = range.ExprStart;
var evaluatorEnd = range.ExprEnd;
evaluators[count] = new ExternalEvaluatorBtreeRange(
evaluatorStart,
evaluatorEnd,
rangeCoercionTypes[i]);
}
else {
var relOp = (QueryGraphValueEntryRangeRelOp) rangeKey;
var evaluator = relOp.Expression;
evaluators[count] = new ExternalEvaluatorHashRelOp(evaluator, rangeCoercionTypes[i]);
}
count++;
}
}
