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wl2126 - ndb - add support for batching range scans

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1) removed acc keyinfo
2) introduce handling of multiple bounds
This commit is contained in:
joreland@mysql.com
2004-11-23 22:08:47 +01:00
parent e43f95e6be
commit 83434d3529
11 changed files with 265 additions and 263 deletions
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22
ndb/src/ndbapi/NdbScanOperation.cpp
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@@ -129,7 +129,6 @@ NdbResultSet* NdbScanOperation::readTuples(NdbScanOperation::LockMode lm,
Uint32 parallel)
{
m_ordered = 0;
Uint32 fragCount = m_currentTable->m_fragmentCount;
if (parallel > fragCount || parallel == 0) {
@@ -232,7 +231,7 @@ NdbResultSet* NdbScanOperation::readTuples(NdbScanOperation::LockMode lm,
tSignal->setSignal(GSN_KEYINFO);
theKEYINFOptr = ((KeyInfo*)tSignal->getDataPtrSend())->keyData;
theTotalNrOfKeyWordInSignal= 0;
getFirstATTRINFOScan();
return getResultSet();
}
@@ -1205,6 +1204,9 @@ NdbIndexScanOperation::readTuples(LockMode lm,
#endif
}
}
m_this_bound_start = 0;
m_first_bound_word = theKEYINFOptr;
return rs;
}
@@ -1573,7 +1575,8 @@ NdbScanOperation::restart()
}
int
NdbIndexScanOperation::reset_bounds(){
NdbIndexScanOperation::reset_bounds()
{
int res;
{
@@ -1593,6 +1596,8 @@ NdbIndexScanOperation::reset_bounds(){
theTotalNrOfKeyWordInSignal = 0;
theNoOfTupKeyLeft = m_accessTable->m_noOfDistributionKeys;
theDistrKeyIndicator_ = 0;
m_this_bound_start = 0;
m_first_bound_word = theKEYINFOptr;
m_transConnection
->remove_list((NdbOperation*&)m_transConnection->m_firstExecutedScanOp,
this);
@@ -1601,3 +1606,14 @@ NdbIndexScanOperation::reset_bounds(){
}
return res;
}
int
NdbIndexScanOperation::set_new_bound()
{
Uint32 bound_head = * m_first_bound_word;
bound_head |= (theTupKeyLen - m_this_bound_start) << 16;
* m_first_bound_word = bound_head;
m_first_bound_word = theKEYINFOptr;
m_this_bound_start = theTupKeyLen;
}