80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
/*
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* Copyright (c) 2020 Huawei Technologies Co.,Ltd.
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*
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* openGauss is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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*
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* http://license.coscl.org.cn/MulanPSL2
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*
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PSL v2 for more details.
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* ---------------------------------------------------------------------------------------
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*
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* connection.h
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* Head file for streaming engine connection.
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*
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*
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* IDENTIFICATION
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* src/distribute/kernel/extension/streaming/include/connection.h
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*
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* ---------------------------------------------------------------------------------------
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*/
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#ifndef CONTRIB_STREAMING_INCLUDE_DICTCACHE_H_
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#define CONTRIB_STREAMING_INCLUDE_DICTCACHE_H_
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#include "streaming/init.h"
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#include "knl/knl_thread.h"
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#include "knl/knl_variable.h"
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#define OIDTYPE 0
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#define TEXTTYPE 1
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#define Natts_dict 2
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#define Anum_dict_id 1
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#define Anum_dict_value 2
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#define DICT_SQL_MAX_LEN 1024
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#define DICT_HASH_NELEM 32
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void init_dict(void);
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HeapTuple dict_cache_lookup(int id, Datum key, int type);
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#define AEXPR_TO_SUBLINK_SQL "select distinct id from %s where value='%s'"
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#define RESTARGET_TO_SUBLINK_SQL "select distinct value from %s where %s=id"
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/*
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* Definition of dictionary mapping hash entry
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*/
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typedef struct DictEntry
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{
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uint32 id; /* hash key of DictEntry */
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HeapTuple tuple; /* dict mapping tuple */
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bool valid; /* valid flag*/
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} DictEntry;
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typedef struct DictAnalyzeContext
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{
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List *a_exprs;
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List *rels;
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List *cqtabs;
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List *cols;
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} DictAnalyzeContext;
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DictAnalyzeContext *make_dict_analyze_context();
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bool collect_aexprs(Node *node, DictAnalyzeContext *context);
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void init_dict(void);
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Oid dict_table_insert(int id, HeapTuple tup, Datum key);
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HeapTuple dict_cache_lookup(int id, Datum key, int type);
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Datum dict_get_attr(int id, HeapTuple tup, AttrNumber attr, bool *isnull);
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int get_id_by_dictrelid(Oid dictrelid);
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bool is_contquery_with_dict(Node* node);
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bool collect_rels(Node *node, DictAnalyzeContext *context);
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bool collect_cols(Node *node, DictAnalyzeContext *context);
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void transform_contquery_selectstmt_with_dict(SelectStmt * selectstmt);
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#endif /* CONTRIB_STREAMING_INCLUDE_DICTCACHE_H_ */
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