CREATE/DROP TRIGGER syntax
This commit is contained in:
Vadim B. Mikheev
parent
0badb77e73
commit
bad4bc40b9
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@ -10,7 +10,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.41 1997/09/01 06:00:35 thomas Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.42 1997/09/04 13:24:25 vadim Exp $
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*
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* HISTORY
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* AUTHOR DATE MAJOR EVENT
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@ -107,7 +107,7 @@ static Node *makeA_Expr(int oper, char *opname, Node *lexpr, Node *rexpr);
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%type <node> stmt,
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AddAttrStmt, ClosePortalStmt,
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CopyStmt, CreateStmt, CreateSeqStmt, DefineStmt, DestroyStmt,
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ExtendStmt, FetchStmt, GrantStmt,
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ExtendStmt, FetchStmt, GrantStmt, CreateTrigStmt, DropTrigStmt,
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IndexStmt, MoveStmt, ListenStmt, OptimizableStmt,
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ProcedureStmt, PurgeStmt,
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RecipeStmt, RemoveAggrStmt, RemoveOperStmt, RemoveFuncStmt, RemoveStmt,
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@ -119,9 +119,9 @@ static Node *makeA_Expr(int oper, char *opname, Node *lexpr, Node *rexpr);
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%type <str> txname
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%type <node> SubSelect
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%type <str> join_clause, join_type, join_outer, join_spec
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%type <boolean> join_qual
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%type <boolean> join_qual, TriggerActionTime, TriggerForSpec
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%type <str> datetime
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%type <str> datetime, TriggerEvents, TriggerFuncArg
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%type <str> relation_name, copy_file_name, copy_delimiter, def_name,
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database_name, access_method_clause, access_method, attr_name,
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@ -136,7 +136,7 @@ static Node *makeA_Expr(int oper, char *opname, Node *lexpr, Node *rexpr);
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SpecialRuleRelation
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%type <str> privileges, operation_commalist, grantee
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%type <chr> operation
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%type <chr> operation, TriggerOneEvent
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%type <list> stmtblock, stmtmulti,
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relation_name_list, OptTableElementList, tableElementList,
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@ -147,7 +147,7 @@ static Node *makeA_Expr(int oper, char *opname, Node *lexpr, Node *rexpr);
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sort_clause, sortby_list, index_params, index_list, name_list,
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from_clause, from_list, opt_array_bounds, nest_array_bounds,
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expr_list, default_expr_list, attrs, res_target_list, res_target_list2,
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def_list, opt_indirection, group_clause, groupby_list
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def_list, opt_indirection, group_clause, groupby_list, TriggerFuncArgs
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%type <list> union_clause, select_list
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%type <list> join_list
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@ -217,10 +217,10 @@ static Node *makeA_Expr(int oper, char *opname, Node *lexpr, Node *rexpr);
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MERGE, MINUTEINTERVAL, MONTHINTERVAL, MOVE,
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NATURAL, NEW, NONE, NOT, NOTHING, NOTIFY, NOTNULL,
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OIDS, ON, OPERATOR, OPTION, OR, ORDER, OUTERJOIN,
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PNULL, POSITION, PRIVILEGES, PUBLIC, PURGE, P_TYPE,
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PNULL, POSITION, PRIVILEGES, PROCEDURE, PUBLIC, PURGE, P_TYPE,
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RENAME, REPLACE, RESET, RETRIEVE, RETURNS, REVOKE, RIGHT, ROLLBACK, RULE,
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SECONDINTERVAL, SELECT, SET, SETOF, SHOW, STDIN, STDOUT, STORE, SUBSTRING,
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TABLE, TIME, TO, TRAILING, TRANSACTION, TRIM,
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TABLE, TIME, TO, TRAILING, TRANSACTION, TRIGGER, TRIM,
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UNION, UNIQUE, UPDATE, USING, VACUUM, VALUES,
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VERBOSE, VERSION, VIEW, WHERE, WITH, WORK, YEARINTERVAL, ZONE
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%token EXECUTE, RECIPE, EXPLAIN, LIKE, SEQUENCE
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@ -278,9 +278,11 @@ stmt : AddAttrStmt
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| CopyStmt
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| CreateStmt
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| CreateSeqStmt
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| CreateTrigStmt
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| ClusterStmt
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| DefineStmt
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| DestroyStmt
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| DropTrigStmt
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| ExtendStmt
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| ExplainStmt
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| FetchStmt
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@ -713,6 +715,95 @@ OptSeqElem: IDENT NumConst
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;
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/*****************************************************************************
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*
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* QUERIES :
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* CREATE TRIGGER ...
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* DROP TRIGGER ...
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*
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*****************************************************************************/
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CreateTrigStmt: CREATE TRIGGER name TriggerActionTime TriggerEvents ON
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relation_name TriggerForSpec EXECUTE PROCEDURE
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name '(' TriggerFuncArgs ')'
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{
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CreateTrigStmt *n = makeNode(CreateTrigStmt);
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n->trigname = $3;
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n->relname = $7;
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n->funcname = $11;
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n->args = $13;
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n->before = $4;
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n->row = $8;
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memcpy (n->actions, $5, 4);
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$$ = (Node *)n;
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}
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;
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TriggerActionTime: BEFORE { $$ = true; }
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| AFTER { $$ = false; }
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;
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TriggerEvents: TriggerOneEvent
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{
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char *e = palloc (4);
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e[0] = $1; e[1] = 0; $$ = e;
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}
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| TriggerOneEvent OR TriggerOneEvent
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{
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char *e = palloc (4);
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e[0] = $1; e[1] = $3; e[2] = 0; $$ = e;
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}
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| TriggerOneEvent OR TriggerOneEvent OR TriggerOneEvent
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{
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char *e = palloc (4);
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e[0] = $1; e[1] = $3; e[2] = $5; e[3] = 0;
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$$ = e;
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}
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;
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TriggerOneEvent: INSERT { $$ = 'i'; }
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| DELETE { $$ = 'd'; }
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| UPDATE { $$ = 'u'; }
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;
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TriggerForSpec: FOR name name
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{
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if ( strcmp ($2, "each") != 0 )
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elog (WARN, "parser: syntax error near %s", $2);
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if ( strcmp ($3, "row") == 0 )
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$$ = true;
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else if ( strcmp ($3, "statement") == 0 )
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$$ = false;
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else
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elog (WARN, "parser: syntax error near %s", $3);
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}
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;
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TriggerFuncArgs: TriggerFuncArg
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{ $$ = lcons($1, NIL); }
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| TriggerFuncArgs ',' TriggerFuncArg
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{ $$ = lappend($1, $3); }
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| /* EMPTY */ { $$ = NIL; }
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;
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TriggerFuncArg: ICONST
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{
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char *s = (char *) palloc (256);
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sprintf (s, "%d", $1);
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$$ = s;
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}
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| Sconst { $$ = $1; }
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;
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DropTrigStmt: DROP TRIGGER name ON relation_name
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{
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DropTrigStmt *n = makeNode(DropTrigStmt);
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n->trigname = $3;
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n->relname = $5;
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$$ = (Node *) n;
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}
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;
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/*****************************************************************************
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*
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* QUERY :
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@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/parser/keywords.c,v 1.13 1997/09/01 05:53:31 thomas Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/keywords.c,v 1.14 1997/09/04 13:24:26 vadim Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -133,6 +133,7 @@ static ScanKeyword ScanKeywords[] = {
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{ "outer", OUTERJOIN },
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{ "position", POSITION },
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{ "privileges", PRIVILEGES },
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{ "procedure", PROCEDURE },
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{ "public", PUBLIC },
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{ "purge", PURGE },
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{ "recipe", RECIPE },
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@ -160,6 +161,7 @@ static ScanKeyword ScanKeywords[] = {
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{ "to", TO },
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{ "transaction", TRANSACTION },
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{ "trailing", TRAILING },
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{ "trigger", TRIGGER },
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{ "trim", TRIM },
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{ "type", P_TYPE },
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{ "union", UNION },
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