+ /*
+ * Okay only if there's a suitable INSTEAD OF trigger. Messages
+ * here should match rewriteHandler.c's rewriteTargetView, except
+ * that we omit errdetail because we haven't got the information
+ * handy (and given that we really shouldn't get here anyway, it's
+ * not worth great exertion to get).
+ */
+ switch (operation)
+ {
+ case CMD_INSERT:
+ if (!trigDesc || !trigDesc->trig_insert_instead_row)
+ ereport(ERROR,
+ (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
+ errmsg("cannot insert into view \"%s\"",
+ RelationGetRelationName(resultRel)),
+ errhint("To enable inserting into the view, provide an INSTEAD OF INSERT trigger or an unconditional ON INSERT DO INSTEAD rule.")));
+ break;
+ case CMD_UPDATE:
+ if (!trigDesc || !trigDesc->trig_update_instead_row)
+ ereport(ERROR,
+ (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
+ errmsg("cannot update view \"%s\"",
+ RelationGetRelationName(resultRel)),
+ errhint("To enable updating the view, provide an INSTEAD OF UPDATE trigger or an unconditional ON UPDATE DO INSTEAD rule.")));
+ break;
+ case CMD_DELETE:
+ if (!trigDesc || !trigDesc->trig_delete_instead_row)
+ ereport(ERROR,
+ (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
+ errmsg("cannot delete from view \"%s\"",
+ RelationGetRelationName(resultRel)),
+ errhint("To enable deleting from the view, provide an INSTEAD OF DELETE trigger or an unconditional ON DELETE DO INSTEAD rule.")));
+ break;
+ default:
+ elog(ERROR, "unrecognized CmdType: %d", (int) operation);
+ break;
+ }
+ break;
+ case RELKIND_MATVIEW:
+ if (!MatViewIncrementalMaintenanceIsEnabled())
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot change materialized view \"%s\"",
+ RelationGetRelationName(resultRel))));
+ break;
+ case RELKIND_FOREIGN_TABLE:
+ /* Okay only if the FDW supports it */
+ fdwroutine = GetFdwRoutineForRelation(resultRel, false);
+ switch (operation)
+ {
+ case CMD_INSERT:
+ if (fdwroutine->ExecForeignInsert == NULL)
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("cannot insert into foreign table \"%s\"",
+ RelationGetRelationName(resultRel))));
+ if (fdwroutine->IsForeignRelUpdatable != NULL &&
+ (fdwroutine->IsForeignRelUpdatable(resultRel) & (1 << CMD_INSERT)) == 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
+ errmsg("foreign table \"%s\" does not allow inserts",
+ RelationGetRelationName(resultRel))));
+ break;
+ case CMD_UPDATE:
+ if (fdwroutine->ExecForeignUpdate == NULL)
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("cannot update foreign table \"%s\"",
+ RelationGetRelationName(resultRel))));
+ if (fdwroutine->IsForeignRelUpdatable != NULL &&
+ (fdwroutine->IsForeignRelUpdatable(resultRel) & (1 << CMD_UPDATE)) == 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
+ errmsg("foreign table \"%s\" does not allow updates",
+ RelationGetRelationName(resultRel))));
+ break;
+ case CMD_DELETE:
+ if (fdwroutine->ExecForeignDelete == NULL)
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("cannot delete from foreign table \"%s\"",
+ RelationGetRelationName(resultRel))));
+ if (fdwroutine->IsForeignRelUpdatable != NULL &&
+ (fdwroutine->IsForeignRelUpdatable(resultRel) & (1 << CMD_DELETE)) == 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
+ errmsg("foreign table \"%s\" does not allow deletes",
+ RelationGetRelationName(resultRel))));
+ break;
+ default:
+ elog(ERROR, "unrecognized CmdType: %d", (int) operation);
+ break;
+ }
+ break;
+ default:
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot change relation \"%s\"",
+ RelationGetRelationName(resultRel))));
+ break;