SNMP and Valentina Server

There is a new feature in Valentina Server – SNMP agent.

Currently we support only get() and get_next() SNMP requests for the following oids:
sysDescr(“1.3.6.1.2.1.1.1.0” )
sysUpTime(“1.3.6.1.2.1.1.3.0” )
Not much info but it makes a possibility to monitor vServer over SNMP.

For now, SNMP facilities are available only for Windows.

You should specify SNMP port in the server ini-file (default port is 161, 0 means turn off SNMP agent):

…

[SNMP]
Port_SNMP=161;             SNMP port to listen by VServer.
;                                             0 – do not use a SNMP port.

…

Valentina for Revolution Supports Now “*b” in the SQL Binding.

Working with Trevore Devore we have found that V4REV do not understand Binary Values if pass them into array of binds.

Problem is that external get array of MCstrings which contain {char*, len}. So external cannot differ strings from binaries.

Solution is like in REV DB. Developer must use prefix “*b” for array items, which contain binary values.
put 1 into binds[1]
put str into binds[2]
put binaryValue into binds[“*b3”]

VREV external now is able to analyze names of array and found binary values.

Internal optimization for views and sub-queries.

In some cases we can avoid copying sub-query result to the temporary table. We can even use sub-query cursor “as is” – so it could be used as a result of the whole query. In other words there  is almost zero overhead against a simple query.

For now such optimization can be applied if a query:

  1. contains only “*” item in the select list clause
  2. has no “where” clause
  3. has no “group by” clause
  4. has no “having” clause
  5. has no “distinct” clause
  6. is not a part of some join operation
  7. has no “order by” clause
  8. has no binding values
  9. sub-query is not a “union/except/intersect” result

Examples:

SELECT * FROM (SELECT * FROM t1 WHERE f1 > 5);

SELECT * FROM (SELECT t1.f1, t2 f1 FROM t1 JOIN t2 ON l1 WHERE t1.f1 > 5 AND t2.f1 <3);

Two new Video Tutorials about ODBC datasource setup.

We have add 2 news video tutorials EN. One for MAC and one for WIN about how to setup ODBC datasource around Valentina ODBC driver.

http://valentina-db.com/dokuwiki/doku.php?id=valentina:video:video

These lessons can be helpful to setup ODBC data source for other dbs also, e.g. MySQL or MS Access, if you want import from then into Valentina using
Valentina Studio ODBC data import.

And lesson about this import from ODBC is our next lesson, which is in the work.

Valentina for iPhone becomes free for use with release 4.2!

With 4.2 release we make Valentina for iPhone (iV4CC), which currently is VClient only, totally free for download and use. Of course you should have a license of a Valentina Server.

Note, that now you can easy download iV4CC and VServer Office archive with DEMO license, develop and test application on both Simulator and iPhone Device.