virtual void notify(SubscriptionId subid, const char *daliXpath, SDSNotifyFlags flags, unsigned valueLen, const void *valueData)
{
Linked<CDaliPackageWatcher> me = this; // Ensure that I am not released by the notify call (which would then access freed memory to release the critsec)
Linked<ISDSSubscription> myNotifier;
{
CriticalBlock b(crit);
if (traceLevel > 5)
DBGLOG("Notification on %s (%s), %p", xpath.get(), daliXpath ? daliXpath : "", this);
myNotifier.set(notifier);
// allow crit to be released, allowing this to be unsubscribed, to avoid deadlocking when other threads via notify call unsubscribe
}
if (myNotifier)
myNotifier->notify(subid, daliXpath, flags, valueLen, valueData);
}
//MORE: Really this should create no_selects for the sub records, but pass on that for the moment.
void DataSourceMetaData::gatherFields(IHqlExpression * expr, bool isConditional)
{
switch (expr->getOperator())
{
case no_record:
gatherChildFields(expr, isConditional);
break;
case no_ifblock:
{
OwnedITypeInfo boolType = makeBoolType();
OwnedITypeInfo voidType = makeVoidType();
isStoredFixedWidth = false;
fields.append(*new DataSourceMetaItem(FVFFbeginif, NULL, NULL, boolType));
gatherChildFields(expr->queryChild(1), true);
fields.append(*new DataSourceMetaItem(FVFFendif, NULL, NULL, voidType));
break;
}
case no_field:
{
if (expr->hasProperty(__ifblockAtom))
break;
Linked<ITypeInfo> type = expr->queryType();
IAtom * name = expr->queryName();
IHqlExpression * nameAttr = expr->queryProperty(namedAtom);
StringBuffer outname;
if (nameAttr && nameAttr->queryChild(0)->queryValue())
nameAttr->queryChild(0)->queryValue()->getStringValue(outname);
else
outname.append(name).toLowerCase();
StringBuffer xpathtext;
const char * xpath = NULL;
IHqlExpression * xpathAttr = expr->queryProperty(xpathAtom);
if (xpathAttr && xpathAttr->queryChild(0)->queryValue())
xpath = xpathAttr->queryChild(0)->queryValue()->getStringValue(xpathtext);
if (isKey() && expr->hasProperty(blobAtom))
type.setown(makeIntType(8, false));
type_t tc = type->getTypeCode();
if (tc == type_row)
{
OwnedITypeInfo voidType = makeVoidType();
fields.append(*new DataSourceMetaItem(FVFFbeginrecord, outname, xpath, voidType));
gatherChildFields(expr->queryRecord(), isConditional);
fields.append(*new DataSourceMetaItem(FVFFendrecord, outname, xpath, voidType));
}
else if ((tc == type_table) || (tc == type_groupedtable))
{
isStoredFixedWidth = false;
fields.append(*new DataSourceDatasetItem(outname, xpath, expr));
}
else if (tc == type_set)
{
isStoredFixedWidth = false;
fields.append(*new DataSourceSetItem(outname, xpath, type));
}
else
{
if (type->getTypeCode() == type_alien)
{
IHqlAlienTypeInfo * alien = queryAlienType(type);
type.set(alien->queryPhysicalType());
}
addSimpleField(outname, xpath, type);
}
break;
}
}
}
//MORE: Really this should create no_selects for the sub records, but pass on that for the moment.
void DataSourceMetaData::gatherFields(IHqlExpression * expr, bool isConditional, bool *pMixedContent)
{
switch (expr->getOperator())
{
case no_record:
gatherChildFields(expr, isConditional, pMixedContent);
break;
case no_ifblock:
{
OwnedITypeInfo boolType = makeBoolType();
OwnedITypeInfo voidType = makeVoidType();
isStoredFixedWidth = false;
fields.append(*new DataSourceMetaItem(FVFFbeginif, NULL, NULL, boolType));
gatherChildFields(expr->queryChild(1), true, pMixedContent);
fields.append(*new DataSourceMetaItem(FVFFendif, NULL, NULL, voidType));
break;
}
case no_field:
{
if (expr->hasAttribute(__ifblockAtom))
break;
Linked<ITypeInfo> type = expr->queryType();
IAtom * name = expr->queryName();
IHqlExpression * nameAttr = expr->queryAttribute(namedAtom);
StringBuffer outname;
if (nameAttr && nameAttr->queryChild(0)->queryValue())
nameAttr->queryChild(0)->queryValue()->getStringValue(outname);
else
outname.append(name).toLowerCase();
StringBuffer xpathtext;
const char * xpath = NULL;
IHqlExpression * xpathAttr = expr->queryAttribute(xpathAtom);
if (xpathAttr && xpathAttr->queryChild(0)->queryValue())
xpath = xpathAttr->queryChild(0)->queryValue()->getStringValue(xpathtext);
unsigned flag = FVFFnone;
if (isKey() && expr->hasAttribute(blobAtom))
{
type.setown(makeIntType(8, false));
flag = FVFFblob;
}
type_t tc = type->getTypeCode();
if (tc == type_row)
{
OwnedITypeInfo voidType = makeVoidType();
Owned<DataSourceMetaItem> begin = new DataSourceMetaItem(FVFFbeginrecord, outname, xpath, voidType);
//inherit mixed content from child row with xpath('')
bool *pItemMixedContent = (pMixedContent && xpath && !*xpath) ? pMixedContent : &(begin->hasMixedContent);
fields.append(*begin.getClear());
gatherChildFields(expr->queryRecord(), isConditional, pItemMixedContent);
fields.append(*new DataSourceMetaItem(FVFFendrecord, outname, xpath, voidType));
}
else if ((tc == type_dictionary) || (tc == type_table) || (tc == type_groupedtable))
{
isStoredFixedWidth = false;
Owned<DataSourceDatasetItem> ds = new DataSourceDatasetItem(outname, xpath, expr);
if (pMixedContent && xpath && !*xpath)
*pMixedContent = ds->queryChildMeta()->hasMixedContent;
fields.append(*ds.getClear());
}
else if (tc == type_set)
{
isStoredFixedWidth = false;
if (pMixedContent && xpath && !*xpath)
*pMixedContent = true;
fields.append(*new DataSourceSetItem(outname, xpath, type));
}
else
{
if (type->getTypeCode() == type_alien)
{
IHqlAlienTypeInfo * alien = queryAlienType(type);
type.set(alien->queryPhysicalType());
}
if (pMixedContent && xpath && !*xpath)
*pMixedContent = true;
addSimpleField(outname, xpath, type, flag);
}
break;
}
}
}