Code beautification for ATExecAttachPartition.
Amit Langote Discussion: http://postgr.es/m/CAFjFpReT_kq_uwU_B8aWDxR7jNGE=P0iELycdq5oupi=xSQTOw@mail.gmail.com
This commit is contained in:
Robert Haas
parent
86705aa8c3
commit
583df3b5c5
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@ -13419,10 +13419,10 @@ ComputePartitionAttrs(Relation rel, List *partParams, AttrNumber *partattrs,
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static ObjectAddress
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ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd)
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{
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Relation attachRel,
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Relation attachrel,
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catalog;
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List *childrels;
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TupleConstr *attachRel_constr;
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List *attachrel_children;
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TupleConstr *attachrel_constr;
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List *partConstraint,
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*existConstraint;
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SysScanDesc scan;
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@ -13434,22 +13434,22 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd)
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ObjectAddress address;
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const char *trigger_name;
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attachRel = heap_openrv(cmd->name, AccessExclusiveLock);
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attachrel = heap_openrv(cmd->name, AccessExclusiveLock);
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/*
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* Must be owner of both parent and source table -- parent was checked by
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* ATSimplePermissions call in ATPrepCmd
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*/
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ATSimplePermissions(attachRel, ATT_TABLE | ATT_FOREIGN_TABLE);
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ATSimplePermissions(attachrel, ATT_TABLE | ATT_FOREIGN_TABLE);
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/* A partition can only have one parent */
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if (attachRel->rd_rel->relispartition)
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if (attachrel->rd_rel->relispartition)
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ereport(ERROR,
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(errcode(ERRCODE_WRONG_OBJECT_TYPE),
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errmsg("\"%s\" is already a partition",
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RelationGetRelationName(attachRel))));
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RelationGetRelationName(attachrel))));
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if (OidIsValid(attachRel->rd_rel->reloftype))
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if (OidIsValid(attachrel->rd_rel->reloftype))
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ereport(ERROR,
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(errcode(ERRCODE_WRONG_OBJECT_TYPE),
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errmsg("cannot attach a typed table as partition")));
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@ -13462,7 +13462,7 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd)
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ScanKeyInit(&skey,
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Anum_pg_inherits_inhrelid,
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BTEqualStrategyNumber, F_OIDEQ,
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ObjectIdGetDatum(RelationGetRelid(attachRel)));
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ObjectIdGetDatum(RelationGetRelid(attachrel)));
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scan = systable_beginscan(catalog, InheritsRelidSeqnoIndexId, true,
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NULL, 1, &skey);
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if (HeapTupleIsValid(systable_getnext(scan)))
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@ -13475,11 +13475,11 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd)
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ScanKeyInit(&skey,
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Anum_pg_inherits_inhparent,
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BTEqualStrategyNumber, F_OIDEQ,
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ObjectIdGetDatum(RelationGetRelid(attachRel)));
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ObjectIdGetDatum(RelationGetRelid(attachrel)));
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scan = systable_beginscan(catalog, InheritsParentIndexId, true, NULL,
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1, &skey);
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if (HeapTupleIsValid(systable_getnext(scan)) &&
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attachRel->rd_rel->relkind == RELKIND_RELATION)
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attachrel->rd_rel->relkind == RELKIND_RELATION)
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ereport(ERROR,
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(errcode(ERRCODE_WRONG_OBJECT_TYPE),
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errmsg("cannot attach inheritance parent as partition")));
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@ -13487,22 +13487,22 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd)
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heap_close(catalog, AccessShareLock);
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/*
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* Prevent circularity by seeing if rel is a partition of attachRel. (In
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* Prevent circularity by seeing if rel is a partition of attachrel. (In
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* particular, this disallows making a rel a partition of itself.)
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*/
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childrels = find_all_inheritors(RelationGetRelid(attachRel),
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AccessShareLock, NULL);
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if (list_member_oid(childrels, RelationGetRelid(rel)))
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attachrel_children = find_all_inheritors(RelationGetRelid(attachrel),
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AccessShareLock, NULL);
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if (list_member_oid(attachrel_children, RelationGetRelid(rel)))
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ereport(ERROR,
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(errcode(ERRCODE_DUPLICATE_TABLE),
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errmsg("circular inheritance not allowed"),
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errdetail("\"%s\" is already a child of \"%s\".",
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RelationGetRelationName(rel),
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RelationGetRelationName(attachRel))));
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RelationGetRelationName(attachrel))));
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/* Temp parent cannot have a partition that is itself not a temp */
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if (rel->rd_rel->relpersistence == RELPERSISTENCE_TEMP &&
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attachRel->rd_rel->relpersistence != RELPERSISTENCE_TEMP)
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attachrel->rd_rel->relpersistence != RELPERSISTENCE_TEMP)
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ereport(ERROR,
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(errcode(ERRCODE_WRONG_OBJECT_TYPE),
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errmsg("cannot attach a permanent relation as partition of temporary relation \"%s\"",
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@ -13516,30 +13516,30 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd)
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errmsg("cannot attach as partition of temporary relation of another session")));
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/* Ditto for the partition */
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if (attachRel->rd_rel->relpersistence == RELPERSISTENCE_TEMP &&
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!attachRel->rd_islocaltemp)
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if (attachrel->rd_rel->relpersistence == RELPERSISTENCE_TEMP &&
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!attachrel->rd_islocaltemp)
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ereport(ERROR,
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(errcode(ERRCODE_WRONG_OBJECT_TYPE),
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errmsg("cannot attach temporary relation of another session as partition")));
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/* If parent has OIDs then child must have OIDs */
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if (rel->rd_rel->relhasoids && !attachRel->rd_rel->relhasoids)
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if (rel->rd_rel->relhasoids && !attachrel->rd_rel->relhasoids)
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ereport(ERROR,
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(errcode(ERRCODE_WRONG_OBJECT_TYPE),
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errmsg("cannot attach table \"%s\" without OIDs as partition of"
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" table \"%s\" with OIDs", RelationGetRelationName(attachRel),
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" table \"%s\" with OIDs", RelationGetRelationName(attachrel),
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RelationGetRelationName(rel))));
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/* OTOH, if parent doesn't have them, do not allow in attachRel either */
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if (attachRel->rd_rel->relhasoids && !rel->rd_rel->relhasoids)
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/* OTOH, if parent doesn't have them, do not allow in attachrel either */
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if (attachrel->rd_rel->relhasoids && !rel->rd_rel->relhasoids)
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ereport(ERROR,
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(errcode(ERRCODE_WRONG_OBJECT_TYPE),
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errmsg("cannot attach table \"%s\" with OIDs as partition of table"
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" \"%s\" without OIDs", RelationGetRelationName(attachRel),
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" \"%s\" without OIDs", RelationGetRelationName(attachrel),
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RelationGetRelationName(rel))));
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/* Check if there are any columns in attachRel that aren't in the parent */
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tupleDesc = RelationGetDescr(attachRel);
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/* Check if there are any columns in attachrel that aren't in the parent */
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tupleDesc = RelationGetDescr(attachrel);
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natts = tupleDesc->natts;
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for (attno = 1; attno <= natts; attno++)
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{
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@ -13557,7 +13557,7 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd)
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ereport(ERROR,
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(errcode(ERRCODE_DATATYPE_MISMATCH),
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errmsg("table \"%s\" contains column \"%s\" not found in parent \"%s\"",
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RelationGetRelationName(attachRel), attributeName,
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RelationGetRelationName(attachrel), attributeName,
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RelationGetRelationName(rel)),
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errdetail("New partition should contain only the columns present in parent.")));
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}
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@ -13567,34 +13567,34 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd)
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* currently don't allow it to become a partition. See also prohibitions
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* in ATExecAddInherit() and CreateTrigger().
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*/
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trigger_name = FindTriggerIncompatibleWithInheritance(attachRel->trigdesc);
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trigger_name = FindTriggerIncompatibleWithInheritance(attachrel->trigdesc);
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if (trigger_name != NULL)
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ereport(ERROR,
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(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
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errmsg("trigger \"%s\" prevents table \"%s\" from becoming a partition",
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trigger_name, RelationGetRelationName(attachRel)),
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trigger_name, RelationGetRelationName(attachrel)),
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errdetail("ROW triggers with transition tables are not supported on partitions")));
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/* OK to create inheritance. Rest of the checks performed there */
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CreateInheritance(attachRel, rel);
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CreateInheritance(attachrel, rel);
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/*
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* Check that the new partition's bound is valid and does not overlap any
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* of existing partitions of the parent - note that it does not return on
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* error.
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*/
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check_new_partition_bound(RelationGetRelationName(attachRel), rel,
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check_new_partition_bound(RelationGetRelationName(attachrel), rel,
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cmd->bound);
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/* Update the pg_class entry. */
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StorePartitionBound(attachRel, rel, cmd->bound);
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StorePartitionBound(attachrel, rel, cmd->bound);
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/*
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* Generate partition constraint from the partition bound specification.
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* If the parent itself is a partition, make sure to include its
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* constraint as well.
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*/
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partConstraint = list_concat(get_qual_from_partbound(attachRel, rel,
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partConstraint = list_concat(get_qual_from_partbound(attachrel, rel,
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cmd->bound),
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RelationGetPartitionQual(rel));
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partConstraint = (List *) eval_const_expressions(NULL,
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@ -13612,20 +13612,20 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd)
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* There is a case in which we cannot rely on just the result of the
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* proof.
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*/
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attachRel_constr = tupleDesc->constr;
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attachrel_constr = tupleDesc->constr;
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existConstraint = NIL;
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if (attachRel_constr != NULL)
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if (attachrel_constr != NULL)
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{
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int num_check = attachRel_constr->num_check;
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int num_check = attachrel_constr->num_check;
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int i;
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if (attachRel_constr->has_not_null)
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if (attachrel_constr->has_not_null)
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{
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int natts = attachRel->rd_att->natts;
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int natts = attachrel->rd_att->natts;
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for (i = 1; i <= natts; i++)
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{
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Form_pg_attribute att = attachRel->rd_att->attrs[i - 1];
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Form_pg_attribute att = attachrel->rd_att->attrs[i - 1];
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if (att->attnotnull && !att->attisdropped)
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{
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@ -13659,10 +13659,10 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd)
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* If this constraint hasn't been fully validated yet, we must
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* ignore it here.
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*/
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if (!attachRel_constr->check[i].ccvalid)
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if (!attachrel_constr->check[i].ccvalid)
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continue;
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cexpr = stringToNode(attachRel_constr->check[i].ccbin);
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cexpr = stringToNode(attachrel_constr->check[i].ccbin);
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/*
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* Run each expression through const-simplification and
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@ -13684,28 +13684,25 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd)
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skip_validate = true;
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}
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/* It's safe to skip the validation scan after all */
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if (skip_validate)
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{
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/* No need to scan the table after all. */
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ereport(INFO,
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(errmsg("partition constraint for table \"%s\" is implied by existing constraints",
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RelationGetRelationName(attachRel))));
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/*
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* Set up to have the table be scanned to validate the partition
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* constraint (see partConstraint above). If it's a partitioned table, we
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* instead schedule its leaf partitions to be scanned.
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*/
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if (!skip_validate)
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RelationGetRelationName(attachrel))));
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}
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else
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{
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/* Constraints proved insufficient, so we need to scan the table. */
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List *all_parts;
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ListCell *lc;
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/* Take an exclusive lock on the partitions to be checked */
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if (attachRel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
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all_parts = find_all_inheritors(RelationGetRelid(attachRel),
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if (attachrel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
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all_parts = find_all_inheritors(RelationGetRelid(attachrel),
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AccessExclusiveLock, NULL);
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else
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all_parts = list_make1_oid(RelationGetRelid(attachRel));
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all_parts = list_make1_oid(RelationGetRelid(attachrel));
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foreach(lc, all_parts)
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{
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@ -13716,23 +13713,23 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd)
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bool found_whole_row;
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/* Lock already taken */
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if (part_relid != RelationGetRelid(attachRel))
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if (part_relid != RelationGetRelid(attachrel))
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part_rel = heap_open(part_relid, NoLock);
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else
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part_rel = attachRel;
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part_rel = attachrel;
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/*
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* Skip if it's a partitioned table. Only RELKIND_RELATION
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* relations (ie, leaf partitions) need to be scanned.
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* Skip if the partition is itself a partitioned table. We can
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* only ever scan RELKIND_RELATION relations.
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*/
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if (part_rel != attachRel &&
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part_rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
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if (part_rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
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{
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heap_close(part_rel, NoLock);
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if (part_rel != attachrel)
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heap_close(part_rel, NoLock);
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continue;
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}
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/* Grab a work queue entry */
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/* Grab a work queue entry. */
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tab = ATGetQueueEntry(wqueue, part_rel);
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/* Adjust constraint to match this partition */
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@ -13746,15 +13743,15 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd)
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elog(ERROR, "unexpected whole-row reference found in partition key");
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/* keep our lock until commit */
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if (part_rel != attachRel)
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if (part_rel != attachrel)
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heap_close(part_rel, NoLock);
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}
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}
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ObjectAddressSet(address, RelationRelationId, RelationGetRelid(attachRel));
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ObjectAddressSet(address, RelationRelationId, RelationGetRelid(attachrel));
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/* keep our lock until commit */
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heap_close(attachRel, NoLock);
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heap_close(attachrel, NoLock);
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return address;
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}
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