bool CChildLimitedDatasetColumnInfo::buildReadAhead(HqlCppTranslator & translator, BuildCtx & ctx, ReadAheadState & state)
{
try
{
OwnedHqlExpr self = container->getRelativeSelf();
if (sizeField)
{
OwnedHqlExpr mappedSize = replaceSelector(sizeField, querySelfReference(), self);
OwnedHqlExpr replacedSize = quickFullReplaceExpressions(mappedSize, state.requiredValues, state.mappedValues);
if (containsSelector(replacedSize, queryRootSelf()))
return false;
callDeserializerSkipInputSize(translator, ctx, state. helper, replacedSize);
return true;
}
else
{
OwnedHqlExpr mappedCount = replaceSelector(countField, querySelfReference(), self);
OwnedHqlExpr replacedCount = quickFullReplaceExpressions(mappedCount, state.requiredValues, state.mappedValues);
if (containsSelector(replacedCount, queryRootSelf()))
return false;
if (fixedChildSize != UNKNOWN_LENGTH)
{
OwnedHqlExpr scaledSize = multiplyValue(replacedCount, fixedChildSize);
callDeserializerSkipInputSize(translator, ctx, state. helper, scaledSize);
return true;
}
BuildCtx loopctx(ctx);
CHqlBoundExpr bound;
translator.buildTempExpr(loopctx, replacedCount, bound);
OwnedHqlExpr test = createValue(no_postdec, LINK(bound.expr));
loopctx.addLoop(test, NULL, false);
StringBuffer prefetcherInstanceName;
translator.ensureRowPrefetcher(prefetcherInstanceName, ctx, column->queryRecord());
StringBuffer s;
s.append(prefetcherInstanceName).append("->readAhead(");
translator.generateExprCpp(s, state.helper).append(");");
loopctx.addQuoted(s);
return true;
}
}
catch (IException * e)
{
//yuk yuk yuk!! Couldn't resolve the dataset count/size for some strange reason
e->Release();
}
return false;
}
css_RuleList mergeNodes(css_RuleList list) {
css_RuleList newRules = NULL;
while(list) {
css_Rule tmpRule = list->rule;
css_SelectorList sels = tmpRule->selectorList;
while(sels) {
css_Selector currSel = sels->selector;
css_RuleList tmpList = list->next;
if(currSel == NULL)
break;
css_Rule newRule = NULL;
newRule = mergeToNewRule(tmpRule, NULL, currSel);
while(tmpList) {
if(containsSelector(tmpList->rule->selectorList, currSel)) {
newRule = mergeToNewRule(newRule, tmpList->rule, currSel);
removeSelector(currSel, tmpList->rule->selectorList);
}
tmpList = tmpList->next;
}
newRules = create_CSSRuleList(newRule, newRules);
sels = sels->next;
}
list = list->next;
}
return newRules;
}
