//////////////////////////////////////////////////////////////////////////////
// Get all the ref constraints from this NATable, filter the ones that are to
// tables in this graph, and mark them on both tables. For example, use the
// RI on Orderes and Customers: O->C ( O is referencing C ). Because of the
// semantics of the order of the tables in the join graph, in order for RI
// optimization to be utilized, C must appear in the graph solution AFTER O.
// The result is that C has an incoming bit for table O, and O has an
// outgoing bit for table C.
// Other conditions that must be met for the RI to be usable:
// 1. C must have non-empty, insert only delta.
// 2. O must not be inner tables of left joins.
// 3. Each of the columns of the RI constraint must be covered by a predicate.
// So if O(a,b) is referencing C(x,y) the join should use these two equal
// predicates: (O.a = C.x) AND (O.b = C.y).
// In this method, this table is O, and otherTable is C.
Lng32 MVJoinTable::markRiConstraints(BindWA *bindWA, MVInfo *mvInfo)
{
LIST (MVUsedObjectInfo*)& usedObjects = mvInfo->getUsedObjectsList();
if (usedObjects[tableIndex_]->isInnerTableOfLeftJoin())
return 0; // O must not be inner table of a left join.
Lng32 howManyRIs=0;
const AbstractRIConstraintList& refConstraints =
naTable_->getRefConstraints();
for (CollIndex i=0; i<refConstraints.entries(); i++)
{
RefConstraint *const ref = (RefConstraint *const)(refConstraints[i]);
CMPASSERT(ref->getOperatorType() == ITM_REF_CONSTRAINT);
// Ignore self referencing RIs.
if (ref->selfRef())
continue;
// Find the table the RI is referencing.
const NAString& otherTableName =
ref->getOtherTableName().getQualifiedNameAsString();
MVJoinTable *otherTable =
mvInfo->getJoinGraph()->getTableObjectFor(&otherTableName);
if (otherTable == NULL)
continue; // The other table must be on the graph.
if (otherTable->deltaType_ != INSERTONLY_DELTA)
continue; // C must be insert only.
Lng32 otherTableIndex = otherTable->getTableIndex();
// The RI must be covered by equal predicates on the same columns
LIST(Lng32) myCols;
LIST(Lng32) otherCols;
ref->getMyKeyColumns(myCols);
ref->getOtherTableKeyColumns(bindWA, otherCols);
CMPASSERT(myCols.entries() == otherCols.entries());
NABoolean matchingPredicatesExist=TRUE;
for (CollIndex currentCol=0; currentCol<myCols.entries(); currentCol++)
{
if (!mvInfo->isEqPredicateBetween(naTable_->getTableName(),
myCols[currentCol],
ref->getOtherTableName(),
otherCols[currentCol]))
matchingPredicatesExist = FALSE;
}
if (!matchingPredicatesExist)
continue;
// OK - we found a qualifying RI that we can use for optimization.
// Now mark the bits.
markRiTo(otherTableIndex);
otherTable->markRiFrom(getTableIndex());
howManyRIs++;
}
return howManyRIs;
}
void CWTOscillator::selectTable()
{
m_nCurrentTableIndex = getTableIndex();
// if the frequency is high enough, the sine table will be returned
// even for non-sinusoidal waves; anything about 10548 Hz is one
// harmonic only (sine)
if(m_nCurrentTableIndex < 0)
{
m_pCurrentTable = &m_dSineTable[0];
return;
}
// choose table
if(m_uWaveform == SAW1 || m_uWaveform == SAW2 || m_uWaveform == SAW3 || m_uWaveform == SQUARE)
m_pCurrentTable = m_pSawTables[m_nCurrentTableIndex];
else if(m_uWaveform == TRI)
m_pCurrentTable = m_pTriangleTables[m_nCurrentTableIndex];
}
void odkFormReader::createItemsTree()
{
treeItems.clear();
int tblindex;
int parentindex;
qSort(tables.begin(),tables.end(),tblComp);
for (int pos = 0; pos <= tables.count()-1;pos++)
{
if (tables[pos].islookup == false)
{
if (tables[pos].xmlCode != "NONE")
{
//qDebug() << "Table:" + tables[pos].name;
if (tables[pos].parentTable == "NULL")
{
tblindex = insertNodes(-1,tables[pos].name,tables[pos].name,tables[pos].xmlCode);
//qDebug() << tables[pos].xmlCode;
tables[pos].parentIndex = tblindex;
}
else
{
//qDebug() << "Parent:" + tables[pos].parentTable;
parentindex = getTableIndex(tables[pos].parentTable);
//qDebug() << "Parent index:" + QString::number(parentindex);
tblindex = insertNodes(parentindex,tables[pos].name,tables[pos].name,tables[pos].xmlCode);
tables[pos].parentIndex = tblindex;
}
}
}
}
}
