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062c64e87e
BLOB pointers, trx_id, and roll_ptr. btr_empty(), btr_create(), page_create(): Add parameter "index", as some index information will be encoded on the compressed page. Define REC_NODE_PTR_SIZE as 4. Allow btr_page_reorganize() and btr_page_reorganize_low() to fail. Define the error code DB_ZIP_OVERFLOW. Make row_ins_index_entry_low() static. page0zip: Encode the index, log reorganized records, and store uncompressed fields separately from the compressed data stream.
102 lines
2.5 KiB
Text
102 lines
2.5 KiB
Text
/******************************************************
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General row routines
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(c) 1996 Innobase Oy
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Created 4/20/1996 Heikki Tuuri
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*******************************************************/
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#include "dict0dict.h"
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#include "rem0rec.h"
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#include "trx0undo.h"
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/*************************************************************************
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Reads the trx id field from a clustered index record. */
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UNIV_INLINE
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dulint
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row_get_rec_trx_id(
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/*===============*/
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/* out: value of the field */
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rec_t* rec, /* in: record */
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dict_index_t* index, /* in: clustered index */
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const ulint* offsets)/* in: rec_get_offsets(rec, index) */
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{
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ulint offset;
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ut_ad(index->type & DICT_CLUSTERED);
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ut_ad(rec_offs_validate(rec, index, offsets));
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offset = index->trx_id_offset;
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if (!offset) {
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offset = row_get_trx_id_offset(rec, index, offsets);
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}
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return(trx_read_trx_id(rec + offset));
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}
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/*************************************************************************
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Reads the roll pointer field from a clustered index record. */
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UNIV_INLINE
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dulint
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row_get_rec_roll_ptr(
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/*=================*/
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/* out: value of the field */
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rec_t* rec, /* in: record */
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dict_index_t* index, /* in: clustered index */
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const ulint* offsets)/* in: rec_get_offsets(rec, index) */
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{
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ulint offset;
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ut_ad(index->type & DICT_CLUSTERED);
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ut_ad(rec_offs_validate(rec, index, offsets));
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offset = index->trx_id_offset;
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if (!offset) {
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offset = row_get_trx_id_offset(rec, index, offsets);
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}
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return(trx_read_roll_ptr(rec + offset + DATA_TRX_ID_LEN));
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}
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/***********************************************************************
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Builds from a secondary index record a row reference with which we can
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search the clustered index record. */
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UNIV_INLINE
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void
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row_build_row_ref_fast(
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/*===================*/
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dtuple_t* ref, /* in: typed data tuple where the
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reference is built */
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const ulint* map, /* in: array of field numbers in rec
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telling how ref should be built from
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the fields of rec */
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rec_t* rec, /* in: record in the index; must be
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preserved while ref is used, as we do
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not copy field values to heap */
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const ulint* offsets)/* in: array returned by rec_get_offsets() */
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{
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dfield_t* dfield;
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byte* field;
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ulint len;
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ulint ref_len;
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ulint field_no;
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ulint i;
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ut_ad(rec_offs_validate(rec, NULL, offsets));
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ref_len = dtuple_get_n_fields(ref);
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for (i = 0; i < ref_len; i++) {
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dfield = dtuple_get_nth_field(ref, i);
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field_no = *(map + i);
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if (field_no != ULINT_UNDEFINED) {
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field = rec_get_nth_field(rec, offsets,
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field_no, &len);
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dfield_set_data(dfield, field, len);
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}
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}
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}
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