Trigger Expression Limit?

[jbm]

I'm trying to create a trigger which will be used for an image item in a map to indicate that there is a problem with one or more of a group of ~10 servers. This involves creating a trigger with around 30 expressions, linked with an OR. I've found I'm able to enter the expression as:

{server01:icmppingsec[,,,,,].last(0)}=0 | {server01:ssh.last(0)}=0 | {server01:ssh.run[load01,,,].last(0)}>10 |
{server02:icmppingsec[,,,,,].last(0)}=0 | {server02:ssh.last(0)}=0 | {server02:ssh.run[load01,,,].last(0)}>10 |
{server03:icmppingsec[,,,,,].last(0)}=0 | {server03:ssh.last(0)}=0 | {server03:ssh.run[load01,,,].last(0)}>10 |
{server04:icmppingsec[,,,,,].last(0)}=0 | {server04:ssh.last(0)}=0 | {server04:ssh.run[load01,,,].last(0)}>10 |
{server05:icmppingsec[,,,,,].last(0)}=0 | {server05:ssh.last(0)}=0 | {server05:ssh.run[load01,,,].last(0)}>10 |
{server06:icmppingsec[,,,,,].last(0)}=0 | {server06:ssh.last(0)}=0 | {server06:ssh.run[load01,,,].last(0)}>10 |
{server07:icmppingsec[,,,,,].last(0)}=0 | {server07:ssh.last(0)}=0 | {server07:ssh.run[load01,,,].last(0)}>10 |
{server08:icmppingsec[,,,,,].last(0)}=0 | {server08:ssh.last(0)}=0 | {server08:ssh.run[load01,,,].last(0)}>10 |
{server09:icmppingsec[,,,,,].last(0)}=0 | {server09:ssh.last(0)}=0 | {server09:ssh.run[load01,,,].last(0)}>10 |
{server10:icmppingsec[,,,,,].last(0)}=0 | {server10:ssh.last(0)}=0 | {server10:ssh.run[load01,,,].last(0)}>10

and then click 'Toggle input method' and the expressions show up correctly, lettered A-^. However when I save the trigger and go back to look, unly A-U have been saved, a total of 20 expressions. Is there a hard limit on the number of expressions in a trigger, and if so, anyone know where it could be modified in code?

[richlv]

do you still see full expression if using standard edit field ?

[jbm]

richlv,

Before saving the expression, I can switch back and forth between the input methods and all checks show up. After saving, I only get the 20 expressions in the list/checkbox view, and in the standard / textbox view, the full expression is cut off at the same point.

[jbm]

Looks like it is a hard limit:

mysql> desc triggers;
+-------------+---------------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------------+---------------------+------+-----+---------+-------+
| triggerid | bigint(20) unsigned | NO | PRI | 0 | |
| expression | varchar(255) | NO | | | |
| description | varchar(255) | NO | | | |
| url | varchar(255) | NO | | | |
| status | int(11) | NO | MUL | 0 | |
| value | int(11) | NO | MUL | 0 | |
| priority | int(11) | NO | | 0 | |
| lastchange | int(11) | NO | | 0 | |
| dep_level | int(11) | NO | | 0 | |
| comments | blob | NO | | NULL | |
| error | varchar(128) | NO | | | |
| templateid | bigint(20) unsigned | NO | | 0 | |
| type | int(11) | NO | | 0 | |
+-------------+---------------------+------+-----+---------+-------+
13 rows in set (0.01 sec)