llCreateKeyValue
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Summary
Function: key llCreateKeyValue( string k, string v );
Start an asynchronous transaction to create a key-value pair associated with the script's Experience using the given key (k) and value (v).
Returns a handle (a key) that can be used to identify the corresponding dataserver event to determine if this command succeeded or failed.
• string | k | – | The key for the key-value pair | |
• string | v | – | The value for the key-value pair. Maximum 2047 characters, or 4095 if using Mono. |
If the key already exists the dataserver will return a failure along with the error XP_ERROR_STORAGE_EXCEPTION.
As of Jan 1, 2016 maximum bytes is 1011 for key and 4095 for value for both LSO and Mono scripts.
Specification
Dataserver
The dataserver callback parameters are:
- A key containing the handle returned from llCreateKeyValue
- A string containing a comma-delimited list (cdl).
llDumpList2String([ integer success ] + components);
- components vary depending upon success or failure of request.
- Failure:
cdl = llDumpList2String([ 0, integer error],",")
- Success:
cdl = llDumpList2String([ 1, string value ],",")
String Components
• integer | success | – | A boolean specifying if the transaction succeeded (1) or not (0). | |
• integer | error | – | An XP_ERROR_* flag that describes why the operation failed. | |
• string | value | – | The value for the key-value pair. Maximum 2047 characters, or 4095 if using Mono. Note! This value may contain commas. |
Caveats
- If you recompile a script that was previously associated with an Experience but do so with a client that lacks the ability to compile scripts into an experience the script will lose the associated Experience.
- It is recommended that keys do not contain commas due to llKeysKeyValue returning keys in CSV format.
Examples
key trans;
default
{
touch_start(integer total_number)
{
trans = llCreateKeyValue("FOO", "BAR");
}
dataserver(key t, string value)
{
if (t == trans)
{
// our llCreateKeyValue transaction is done
integer result = (integer)llGetSubString(value, 0, 0);
if (result == 1)
{
// the key-value pair was successfully created
llSay(0, "New key-value pair was created");
}
else
{
// the key-value pair was not created
integer error = (integer)(llGetSubString(value, 2, -1));
llSay(0, "Key-value failed to create: " + llGetExperienceErrorMessage(error));
}
}
}
}
Notes
Compiling
For a script to be associated with an Experience...
- It must be compiled with a client that is Experience aware,
- The "Use Experience" checkbox must be checked,
- And one of the users Experience keys selected.
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Important: Not all TPVs have this functionality. |