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Allow hyphens in ltree labels 

Also increase the allowed length of labels to 1000 characters

Garen Torikian

Discussion: https://postgr.es/m/CAGXsc+-mNg9Gc0rp-ER0sv+zkZSZp2wE9-LX6XcoWSLVz22tZA@mail.gmail.com
This commit is contained in:
Andrew Dunstan 2023-01-06 16:03:19 -05:00
parent a46a7011b2
commit b1665bf01e
6 changed files with 60 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
contrib/ltree/expected/ltree.out
View File

@ -1,4 +1,6 @@
CREATE EXTENSION ltree;
-- max length for a label
\set maxlbl 1000
-- Check whether any of our opclasses fail amvalidate
SELECT amname, opcname
FROM pg_opclass opc LEFT JOIN pg_am am ON am.oid = opcmethod
@ -25,6 +27,12 @@ SELECT '1.2'::ltree;
1.2
(1 row)
SELECT '1.2.-3'::ltree;
ltree
--------
1.2.-3
(1 row)
SELECT '1.2._3'::ltree;
ltree
--------
@ -45,15 +53,15 @@ ERROR: ltree syntax error
LINE 1: SELECT '1.2.'::ltree;
^
DETAIL: Unexpected end of input.
SELECT repeat('x', 255)::ltree;
repeat
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
SELECT repeat('x', :maxlbl)::ltree;
repeat
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
(1 row)
SELECT repeat('x', 256)::ltree;
SELECT repeat('x', :maxlbl + 1)::ltree;
ERROR: label string is too long
DETAIL: Label length is 256, must be at most 255, at character 257.
DETAIL: Label length is 1001, must be at most 1000, at character 1002.
SELECT ltree2text('1.2.3.34.sdf');
ltree2text
--------------
@ -531,24 +539,24 @@ SELECT '1.2.3|@.4'::lquery;
ERROR: lquery syntax error at character 7
LINE 1: SELECT '1.2.3|@.4'::lquery;
^
SELECT (repeat('x', 255) || '*@@*')::lquery;
lquery
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx@*
SELECT (repeat('x', :maxlbl) || '*@@*')::lquery;
lquery
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx@*
(1 row)
SELECT (repeat('x', 256) || '*@@*')::lquery;
SELECT (repeat('x', :maxlbl + 1) || '*@@*')::lquery;
ERROR: label string is too long
DETAIL: Label length is 256, must be at most 255, at character 257.
SELECT ('!' || repeat('x', 255))::lquery;
lquery
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
!xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
DETAIL: Label length is 1001, must be at most 1000, at character 1002.
SELECT ('!' || repeat('x', :maxlbl))::lquery;
lquery
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
!xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
(1 row)
SELECT ('!' || repeat('x', 256))::lquery;
SELECT ('!' || repeat('x', :maxlbl + 1))::lquery;
ERROR: label string is too long
DETAIL: Label length is 256, must be at most 255, at character 258.
DETAIL: Label length is 1001, must be at most 1000, at character 1003.
SELECT nlevel('1.2.3.4');
nlevel
--------
@ -1195,6 +1203,12 @@ SELECT 'tree & aw_qw%*'::ltxtquery;
tree & aw_qw%*
(1 row)
SELECT 'tree & aw-qw%*'::ltxtquery;
ltxtquery
----------------
tree & aw-qw%*
(1 row)
SELECT 'ltree.awdfg'::ltree @ '!tree & aWdf@*'::ltxtquery;
?column?
----------

7
contrib/ltree/ltree.h
View File

@ -12,10 +12,10 @@
/*
* We want the maximum length of a label to be encoding-independent, so
* set it somewhat arbitrarily at 255 characters (not bytes), while using
* set it somewhat arbitrarily at 1000 characters (not bytes), while using
* uint16 fields to hold the byte length.
*/
#define LTREE_LABEL_MAX_CHARS 255
#define LTREE_LABEL_MAX_CHARS 1000
/*
* LOWER_NODE used to be defined in the Makefile via the compile flags.
@ -126,7 +126,8 @@ typedef struct
#define LQUERY_HASNOT 0x01
#define ISALNUM(x) ( t_isalnum(x) || t_iseq(x, '_') )
/* valid label chars are alphanumerics, underscores and hyphens */
#define ISLABEL(x) ( t_isalnum(x) || t_iseq(x, '_') || t_iseq(x, '-') )
/* full text query */

10
contrib/ltree/ltree_io.c
View File

@ -74,7 +74,7 @@ parse_ltree(const char *buf, struct Node *escontext)
switch (state)
{
case LTPRS_WAITNAME:
if (ISALNUM(ptr))
if (ISLABEL(ptr))
{
lptr->start = ptr;
lptr->wlen = 0;
@ -92,7 +92,7 @@ parse_ltree(const char *buf, struct Node *escontext)
lptr++;
state = LTPRS_WAITNAME;
}
else if (!ISALNUM(ptr))
else if (!ISLABEL(ptr))
UNCHAR;
break;
default:
@ -316,7 +316,7 @@ parse_lquery(const char *buf, struct Node *escontext)
switch (state)
{
case LQPRS_WAITLEVEL:
if (ISALNUM(ptr))
if (ISLABEL(ptr))
{
GETVAR(curqlevel) = lptr = (nodeitem *) palloc0(sizeof(nodeitem) * (numOR + 1));
lptr->start = ptr;
@ -339,7 +339,7 @@ parse_lquery(const char *buf, struct Node *escontext)
UNCHAR;
break;
case LQPRS_WAITVAR:
if (ISALNUM(ptr))
if (ISLABEL(ptr))
{
lptr++;
lptr->start = ptr;
@ -385,7 +385,7 @@ parse_lquery(const char *buf, struct Node *escontext)
state = LQPRS_WAITLEVEL;
curqlevel = NEXTLEV(curqlevel);
}
else if (ISALNUM(ptr))
else if (ISLABEL(ptr))
{
/* disallow more chars after a flag */
if (lptr->flag)

4
contrib/ltree/ltxtquery_io.c
View File

@ -80,7 +80,7 @@ gettoken_query(QPRS_STATE *state, int32 *val, int32 *lenval, char **strval, uint
(state->buf)++;
return OPEN;
}
else if (ISALNUM(state->buf))
else if (ISLABEL(state->buf))
{
state->state = INOPERAND;
*strval = state->buf;
@ -93,7 +93,7 @@ gettoken_query(QPRS_STATE *state, int32 *val, int32 *lenval, char **strval, uint
errmsg("operand syntax error")));
break;
case INOPERAND:
if (ISALNUM(state->buf))
if (ISLABEL(state->buf))
{
if (*flag)
ereturn(state->escontext, ERR,

18
contrib/ltree/sql/ltree.sql
View File

@ -1,5 +1,8 @@
CREATE EXTENSION ltree;
-- max length for a label
\set maxlbl 1000
-- Check whether any of our opclasses fail amvalidate
SELECT amname, opcname
FROM pg_opclass opc LEFT JOIN pg_am am ON am.oid = opcmethod
@ -8,6 +11,7 @@ WHERE opc.oid >= 16384 AND NOT amvalidate(opc.oid);
SELECT ''::ltree;
SELECT '1'::ltree;
SELECT '1.2'::ltree;
SELECT '1.2.-3'::ltree;
SELECT '1.2._3'::ltree;
-- empty labels not allowed
@ -15,8 +19,8 @@ SELECT '.2.3'::ltree;
SELECT '1..3'::ltree;
SELECT '1.2.'::ltree;
SELECT repeat('x', 255)::ltree;
SELECT repeat('x', 256)::ltree;
SELECT repeat('x', :maxlbl)::ltree;
SELECT repeat('x', :maxlbl + 1)::ltree;
SELECT ltree2text('1.2.3.34.sdf');
SELECT text2ltree('1.2.3.34.sdf');
@ -111,10 +115,10 @@ SELECT '1.!.3'::lquery;
SELECT '1.2.!'::lquery;
SELECT '1.2.3|@.4'::lquery;
SELECT (repeat('x', 255) || '*@@*')::lquery;
SELECT (repeat('x', 256) || '*@@*')::lquery;
SELECT ('!' || repeat('x', 255))::lquery;
SELECT ('!' || repeat('x', 256))::lquery;
SELECT (repeat('x', :maxlbl) || '*@@*')::lquery;
SELECT (repeat('x', :maxlbl + 1) || '*@@*')::lquery;
SELECT ('!' || repeat('x', :maxlbl))::lquery;
SELECT ('!' || repeat('x', :maxlbl + 1))::lquery;
SELECT nlevel('1.2.3.4');
SELECT nlevel(('1' || repeat('.1', 65534))::ltree);
@ -233,6 +237,8 @@ SELECT 'QWER_GY'::ltree ~ 'q_t%@*';
--ltxtquery
SELECT '!tree & aWdf@*'::ltxtquery;
SELECT 'tree & aw_qw%*'::ltxtquery;
SELECT 'tree & aw-qw%*'::ltxtquery;
SELECT 'ltree.awdfg'::ltree @ '!tree & aWdf@*'::ltxtquery;
SELECT 'tree.awdfg'::ltree @ '!tree & aWdf@*'::ltxtquery;
SELECT 'tree.awdfg'::ltree @ '!tree | aWdf@*'::ltxtquery;

9
doc/src/sgml/ltree.sgml
View File

@ -23,10 +23,11 @@
<title>Definitions</title>
<para>
A <firstterm>label</firstterm> is a sequence of alphanumeric characters
and underscores (for example, in C locale the characters
<literal>A-Za-z0-9_</literal> are allowed).
Labels must be less than 256 characters long.
A <firstterm>label</firstterm> is a sequence of alphanumeric characters,
underscores, and hyphens. Valid alphanumeric character ranges are
dependent on the database locale. For example, in C locale, the characters
<literal>A-Za-z0-9_-</literal> are allowed.
Labels must be no more than 1000 characters long.
</para>
<para>