public JoinExecTableLookupStrategyVirtualDW(String namedWindowName, VirtualDataWindowLookup externalIndex, TableLookupKeyDesc keyDescriptor, int lookupStream)
{
_namedWindowName = namedWindowName;
_externalIndex = externalIndex;
_evaluators = new ExternalEvaluator[keyDescriptor.Hashes.Count + keyDescriptor.Ranges.Count];
_eventsPerStream = new EventBean[lookupStream + 1];
_lookupStream = lookupStream;
var count = 0;
foreach (var hashKey in keyDescriptor.Hashes)
{
var evaluator = hashKey.KeyExpr.ExprEvaluator;
_evaluators[count] = new ExternalEvaluatorHashRelOp(evaluator);
count++;
}
foreach (var rangeKey in keyDescriptor.Ranges)
{
if (rangeKey.RangeType.IsRange())
{
var range = (QueryGraphValueEntryRangeIn)rangeKey;
var evaluatorStart = range.ExprStart.ExprEvaluator;
var evaluatorEnd = range.ExprEnd.ExprEvaluator;
_evaluators[count] = new ExternalEvaluatorBtreeRange(evaluatorStart, evaluatorEnd);
}
else
{
var relOp = (QueryGraphValueEntryRangeRelOp)rangeKey;
var evaluator = relOp.Expression.ExprEvaluator;
_evaluators[count] = new ExternalEvaluatorHashRelOp(evaluator);
}
count++;
}
}
private void CheckIndex(VirtualDataWindowLookup index)
{
if (index == null)
{
throw new EPException(
"Exception obtaining index lookup from virtual data window, the implementation has returned a null index");
}
}
public JoinExecTableLookupStrategyVirtualDW(
string namedWindowName,
VirtualDataWindowLookup externalIndex,
TableLookupPlan tableLookupPlan)
{
this.namedWindowName = namedWindowName;
this.externalIndex = externalIndex;
lookupStream = tableLookupPlan.LookupStream;
var hashKeys = tableLookupPlan.VirtualDWHashEvals;
if (hashKeys == null) {
hashKeys = new ExprEvaluator[0];
}
var rangeKeys = tableLookupPlan.VirtualDWRangeEvals;
if (rangeKeys == null) {
rangeKeys = new QueryGraphValueEntryRange[0];
}
evaluators = new ExternalEvaluator[hashKeys.Length + rangeKeys.Length];
eventsPerStream = new EventBean[lookupStream + 1];
var count = 0;
foreach (var hashKey in hashKeys) {
evaluators[count] = new ExternalEvaluatorHashRelOp(hashKey);
count++;
}
foreach (var rangeKey in rangeKeys) {
if (rangeKey.Type.IsRange()) {
var range = (QueryGraphValueEntryRangeIn) rangeKey;
var evaluatorStart = range.ExprStart;
var evaluatorEnd = range.ExprEnd;
evaluators[count] = new ExternalEvaluatorBtreeRange(evaluatorStart, evaluatorEnd);
}
else {
var relOp = (QueryGraphValueEntryRangeRelOp) rangeKey;
var evaluator = relOp.Expression;
evaluators[count] = new ExternalEvaluatorHashRelOp(evaluator);
}
count++;
}
}
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++;
}
}
public SubordTableLookupStrategyVirtualDW(
String namedWindowName,
VirtualDataWindowLookup externalIndex,
IList <SubordPropHashKey> hashKeys,
CoercionDesc hashKeyCoercionTypes,
IList <SubordPropRangeKey> rangeKeys,
CoercionDesc rangeKeyCoercionTypes,
bool nwOnTrigger,
int numOuterStreams)
{
_namedWindowName = namedWindowName;
_externalIndex = externalIndex;
_evaluators = new ExternalEvaluator[hashKeys.Count + rangeKeys.Count];
_nwOnTrigger = nwOnTrigger;
_eventsLocal = new EventBean[numOuterStreams + 1];
var count = 0;
foreach (var hashKey in hashKeys)
{
var evaluator = hashKey.HashKey.KeyExpr.ExprEvaluator;
_evaluators[count] = new ExternalEvaluatorHashRelOp(evaluator, hashKeyCoercionTypes.CoercionTypes[count]);
count++;
}
for (var i = 0; i < rangeKeys.Count; i++)
{
SubordPropRangeKey rangeKey = rangeKeys[i];
if (rangeKey.RangeInfo.RangeType.IsRange())
{
var range = (QueryGraphValueEntryRangeIn)rangeKey.RangeInfo;
var evaluatorStart = range.ExprStart.ExprEvaluator;
var evaluatorEnd = range.ExprEnd.ExprEvaluator;
_evaluators[count] = new ExternalEvaluatorBtreeRange(evaluatorStart, evaluatorEnd, rangeKeyCoercionTypes.CoercionTypes[i]);
}
else
{
var relOp = (QueryGraphValueEntryRangeRelOp)rangeKey.RangeInfo;
var evaluator = relOp.Expression.ExprEvaluator;
_evaluators[count] = new ExternalEvaluatorHashRelOp(evaluator, rangeKeyCoercionTypes.CoercionTypes[i]);
}
count++;
}
}
