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MCOL-4412 Introduce TypeHandler::getEmptyValueForType to return const ptr for an empty value

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WE changes for SQL DML and DDL operations

Changes for bulk operations

Changes for scanning operations

Cleanup
This commit is contained in:
Roman Nozdrin
2021-01-15 16:02:10 +00:00
parent 16b52860e8
commit 5fce19df0a
27 changed files with 741 additions and 580 deletions
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6
writeengine/shared/we_chunkmanager.cpp
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@ -821,8 +821,8 @@ int ChunkManager::fetchChunkFromFile(IDBDataFile* pFile, int64_t id, ChunkData*&
void ChunkManager::initializeColumnChunk(char* buf, CompFileData* fileData)
{
int size = UNCOMPRESSED_CHUNK_SIZE;
uint8_t* emptyVal = (uint8_t*) alloca(fileData->fColWidth);
fFileOp->getEmptyRowValue(fileData->fColDataType, fileData->fColWidth, emptyVal);
const uint8_t* emptyVal = fFileOp->getEmptyRowValue(fileData->fColDataType,
fileData->fColWidth);
fFileOp->setEmptyBuf((unsigned char*)buf, size, emptyVal, fileData->fColWidth);
}
@ -1343,7 +1343,7 @@ inline int ChunkManager::writeHeader_(CompFileData* fileData, int ptrSecSize)
// For the specified segment file (pFile), read in an abbreviated/compressed
// chunk extent, uncompress, and expand to a full chunk for a full extent.
//------------------------------------------------------------------------------
int ChunkManager::expandAbbrevColumnExtent(IDBDataFile* pFile, uint8_t* emptyVal, int width)
int ChunkManager::expandAbbrevColumnExtent(IDBDataFile* pFile, const uint8_t* emptyVal, int width)
{
map<IDBDataFile*, CompFileData*>::iterator i = fFilePtrMap.find(pFile);