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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 ORC_STRIPE_STREAM_HH
#define ORC_STRIPE_STREAM_HH
#include "orc/Int128.hh"
#include "orc/OrcFile.hh"
#include "orc/Reader.hh"
#include "ColumnReader.hh"
#include "Timezone.hh"
#include "TypeImpl.hh"
namespace orc {
class RowReaderImpl;
/**
* StripeStream Implementation
*/
class StripeStreamsImpl : public StripeStreams {
private:
const RowReaderImpl& reader;
const proto::StripeInformation& stripeInfo;
const proto::StripeFooter& footer;
const uint64_t stripeIndex;
const uint64_t stripeStart;
InputStream& input;
const Timezone& writerTimezone;
const Timezone& readerTimezone;
public:
StripeStreamsImpl(const RowReaderImpl& reader, uint64_t index,
const proto::StripeInformation& stripeInfo, const proto::StripeFooter& footer,
uint64_t stripeStart, InputStream& input, const Timezone& writerTimezone,
const Timezone& readerTimezone);
virtual ~StripeStreamsImpl() override;
virtual const std::vector<bool> getSelectedColumns() const override;
virtual proto::ColumnEncoding getEncoding(uint64_t columnId) const override;
virtual std::unique_ptr<SeekableInputStream> getStream(uint64_t columnId,
proto::Stream_Kind kind,
bool shouldStream) const override;
MemoryPool& getMemoryPool() const override;
ReaderMetrics* getReaderMetrics() const override;
const Timezone& getWriterTimezone() const override;
const Timezone& getReaderTimezone() const override;
std::ostream* getErrorStream() const override;
bool getThrowOnHive11DecimalOverflow() const override;
bool isDecimalAsLong() const override;
int32_t getForcedScaleOnHive11Decimal() const override;
const SchemaEvolution* getSchemaEvolution() const override;
};
/**
* StreamInformation Implementation
*/
class StreamInformationImpl : public StreamInformation {
private:
StreamKind kind;
uint64_t column;
uint64_t offset;
uint64_t length;
public:
StreamInformationImpl(uint64_t _offset, const proto::Stream& stream)
: kind(static_cast<StreamKind>(stream.kind())),
column(stream.column()),
offset(_offset),
length(stream.length()) {
// PASS
}
~StreamInformationImpl() override;
StreamKind getKind() const override {
return kind;
}
uint64_t getColumnId() const override {
return column;
}
uint64_t getOffset() const override {
return offset;
}
uint64_t getLength() const override {
return length;
}
};
/**
* StripeInformation Implementation
*/
class StripeInformationImpl : public StripeInformation {
uint64_t offset;
uint64_t indexLength;
uint64_t dataLength;
uint64_t footerLength;
uint64_t numRows;
InputStream* stream;
MemoryPool& memory;
CompressionKind compression;
uint64_t blockSize;
mutable std::unique_ptr<proto::StripeFooter> stripeFooter;
ReaderMetrics* metrics;
void ensureStripeFooterLoaded() const;
public:
StripeInformationImpl(uint64_t _offset, uint64_t _indexLength, uint64_t _dataLength,
uint64_t _footerLength, uint64_t _numRows, InputStream* _stream,
MemoryPool& _memory, CompressionKind _compression, uint64_t _blockSize,
ReaderMetrics* _metrics)
: offset(_offset),
indexLength(_indexLength),
dataLength(_dataLength),
footerLength(_footerLength),
numRows(_numRows),
stream(_stream),
memory(_memory),
compression(_compression),
blockSize(_blockSize),
metrics(_metrics) {
// PASS
}
virtual ~StripeInformationImpl() override {
// PASS
}
uint64_t getOffset() const override {
return offset;
}
uint64_t getLength() const override {
return indexLength + dataLength + footerLength;
}
uint64_t getIndexLength() const override {
return indexLength;
}
uint64_t getDataLength() const override {
return dataLength;
}
uint64_t getFooterLength() const override {
return footerLength;
}
uint64_t getNumberOfRows() const override {
return numRows;
}
uint64_t getNumberOfStreams() const override {
ensureStripeFooterLoaded();
return static_cast<uint64_t>(stripeFooter->streams_size());
}
std::unique_ptr<StreamInformation> getStreamInformation(uint64_t streamId) const override;
ColumnEncodingKind getColumnEncoding(uint64_t colId) const override {
ensureStripeFooterLoaded();
return static_cast<ColumnEncodingKind>(stripeFooter->columns(static_cast<int>(colId)).kind());
}
uint64_t getDictionarySize(uint64_t colId) const override {
ensureStripeFooterLoaded();
return static_cast<ColumnEncodingKind>(
stripeFooter->columns(static_cast<int>(colId)).dictionary_size());
}
const std::string& getWriterTimezone() const override {
ensureStripeFooterLoaded();
return stripeFooter->writer_timezone();
}
};
} // namespace orc
#endif
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