46bff6bba0
In the funciton `TextConverter::write_vec_column`, it should execute the statement `nullable_column->get_null_map_data().push_back(0);` for every row. Otherwise the null map will get error and cause the core dump.
73 lines
3.0 KiB
C++
73 lines
3.0 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#pragma once
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#include "vec/columns/column.h"
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namespace doris {
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class MemPool;
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class SlotDescriptor;
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class Status;
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struct StringValue;
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class Tuple;
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class TupleDescriptor;
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// Helper class for dealing with text data, e.g., converting text data to
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// numeric types, etc.
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class TextConverter {
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public:
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TextConverter(char escape_char);
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// Converts slot data, of length 'len', into type of slot_desc,
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// and writes the result into the tuples's slot.
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// copy_string indicates whether we need to make a separate copy of the string data:
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// For regular unescaped strings, we point to the original data in the _file_buf.
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// For regular escaped strings, we copy an its unescaped string into a separate buffer
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// and point to it.
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// If the string needs to be copied, the memory is allocated from 'pool', otherwise
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// 'pool' is unused.
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// Unsuccessful conversions are turned into NULLs.
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// Returns true if the value was written successfully.
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bool write_slot(const SlotDescriptor* slot_desc, Tuple* tuple, const char* data, int len,
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bool copy_string, bool need_escape, MemPool* pool);
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void write_string_column(const SlotDescriptor* slot_desc,
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vectorized::MutableColumnPtr* column_ptr, const char* data,
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size_t len);
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bool write_column(const SlotDescriptor* slot_desc, vectorized::MutableColumnPtr* column_ptr,
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const char* data, size_t len, bool copy_string, bool need_escape);
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bool write_vec_column(const SlotDescriptor* slot_desc, vectorized::IColumn* nullable_col_ptr,
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const char* data, size_t len, bool copy_string, bool need_escape);
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// Removes escape characters from len characters of the null-terminated string src,
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// and copies the unescaped string into dest, changing *len to the unescaped length.
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// No null-terminator is added to dest.
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void unescape_string(const char* src, char* dest, size_t* len);
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void unescape_string_on_spot(const char* src, size_t* len);
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// Removes escape characters from 'str', allocating a new string from pool.
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// 'str' is updated with the new ptr and length.
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void unescape_string(StringValue* str, MemPool* pool);
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private:
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char _escape_char;
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};
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} // namespace doris
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