greenplumn logicalrelation 源码
greenplumn logicalrelation 代码
文件路径：/src/include/replication/logicalrelation.h
/*-------------------------------------------------------------------------
*
* logicalrelation.h
* Relation definitions for logical replication relation mapping.
*
* Portions Copyright (c) 2016-2019, PostgreSQL Global Development Group
*
* src/include/replication/logicalrelation.h
*
*-------------------------------------------------------------------------
*/
#ifndef LOGICALRELATION_H
#define LOGICALRELATION_H
#include "replication/logicalproto.h"
typedef struct LogicalRepRelMapEntry
{
LogicalRepRelation remoterel; /* key is remoterel.remoteid */
/* Mapping to local relation, filled as needed. */
Oid localreloid; /* local relation id */
Relation localrel; /* relcache entry */
AttrNumber *attrmap; /* map of local attributes to remote ones */
bool updatable; /* Can apply updates/deletes? */
/* Sync state. */
char state;
XLogRecPtr statelsn;
} LogicalRepRelMapEntry;
extern void logicalrep_relmap_update(LogicalRepRelation *remoterel);
extern LogicalRepRelMapEntry *logicalrep_rel_open(LogicalRepRelId remoteid,
LOCKMODE lockmode);
extern void logicalrep_rel_close(LogicalRepRelMapEntry *rel,
LOCKMODE lockmode);
extern void logicalrep_typmap_update(LogicalRepTyp *remotetyp);
extern char *logicalrep_typmap_gettypname(Oid remoteid);
#endif /* LOGICALRELATION_H */
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