/
ChunkMetadata.h
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/
ChunkMetadata.h
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/*
* Copyright 2017 MapD Technologies, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef CHUNKMETADATA_H
#define CHUNKMETADATA_H
#include "../Shared/sqltypes.h"
#include <stddef.h>
struct ChunkStats {
Datum min;
Datum max;
bool has_nulls;
};
struct ChunkMetadata {
SQLTypeInfo sqlType;
size_t numBytes;
size_t numElements;
ChunkStats chunkStats;
template <typename T>
void fillChunkStats(const T min, const T max, const bool has_nulls) {
chunkStats.has_nulls = has_nulls;
switch (sqlType.get_type()) {
case kBOOLEAN: {
chunkStats.min.tinyintval = min;
chunkStats.max.tinyintval = max;
break;
}
case kTINYINT: {
chunkStats.min.tinyintval = min;
chunkStats.max.tinyintval = max;
break;
}
case kSMALLINT: {
chunkStats.min.smallintval = min;
chunkStats.max.smallintval = max;
break;
}
case kINT: {
chunkStats.min.intval = min;
chunkStats.max.intval = max;
break;
}
case kBIGINT:
case kNUMERIC:
case kDECIMAL: {
chunkStats.min.bigintval = min;
chunkStats.max.bigintval = max;
break;
}
case kTIME:
case kTIMESTAMP:
case kDATE: {
chunkStats.min.timeval = min;
chunkStats.max.timeval = max;
break;
}
case kFLOAT: {
chunkStats.min.floatval = min;
chunkStats.max.floatval = max;
break;
}
case kDOUBLE: {
chunkStats.min.doubleval = min;
chunkStats.max.doubleval = max;
break;
}
case kVARCHAR:
case kCHAR:
case kTEXT:
if (sqlType.get_compression() == kENCODING_DICT) {
chunkStats.min.intval = min;
chunkStats.max.intval = max;
}
break;
default: { break; }
}
}
void fillChunkStats(const Datum min, const Datum max, const bool has_nulls) {
chunkStats.has_nulls = has_nulls;
chunkStats.min = min;
chunkStats.max = max;
}
};
#endif // CHUNKMETADATA_H