In JMeter I added the configuration for oracle server. Then I added a JDBC request object and put the ResultSet variable name to status.
The test executes fine and result is displayed in treeview listener.
I want to use the variable status and compare it with string but jmeter is throwing error about casting arraylist to string.
How to retrieve this variable and compare with string in While Controller?
Just used some time to figure this out and think the accepted answer is slightly incorrect as the JDBC request sampler has two types of result variables.
The ones you specify in the Variable names box map to individual columns returned by your query and these you can access by saying columnVariable_{index}.
The one you specify in the Result variable name contains the entire result set and in practice this is a list of maps to values. The above syntax will obviously not work in this case.
The ResultSet variable returned with JDBC request in JMeter are in the for of array. So if you want to use variable status, you will have to use it with index. If you want to use the first(or only) record user status_1. So you need to use it like status_{index}.
String host = vars.getObject("status").get(0).get("option_value");
print(host);
log.info("----- " + host);
Form complete infromation read the "yellow box" in this link:
http://jmeter.apache.org/usermanual/component_reference.html#JDBC_Request
Other util example:
http://jmeter.apache.org/usermanual/build-db-test-plan.html
You can use Beanshell/Groovy (same code works) in JSR233 PostProcessor to work with “Result Variable Name” from JDBC Request like this:
ArrayList results = vars.getObject("status");
for (HashMap row: results){
Iterator it = row.entrySet().iterator();
while (it.hasNext()){
Map.Entry pair = (Map.Entry)it.next();
log.info(pair.getKey() + "=" + pair.getValue());
}
}
Instead of output to log replace with adding to string with delimiters of your choice.
Related
I am storing output of JDBC request in Jmeter Variable - "temp_num".
Now I need to concatenate all the values stored in this variable in form of 'a','b','c'......'n'. I did try aggregation withing SLQ script too, but there we have a limit on string length, that's why I would like to probably use something like string builder, but not sure how to use it.
You can convert JDBC result set into a string using JSR223 PostProcessor and the code like :
temp_num = vars.getObject("temp_num");
result = new StringBuilder();
for (Object row : temp_num) {
iter = row.entrySet().iterator();
while (iter.hasNext()) {
pair = iter.next();
result.append(pair.getValue());
result.append(",");
}
}
vars.put('result', result.toString())
However be aware that there is a limit of the number of characters in Java String so make sure not to exceed it.
More information: Debugging JDBC Sampler Results in JMeter
I am trying to return a value from MSSQL server database and storing it in a variable inside JSR223 timer script in Jmeter. However I am getting the following error in log -
**WARN o.a.j.t.JSR223Timer: Script did not return a value
**
This is the code which i have written in the script -
try {
def promoName = ${promotionName}; //extracted the value using JSONExtractor
log.info("Promotion Name is " + promoName); //not displaying in the log
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver").newInstance();
Connection con = DriverManager.getConnection("jdbc:sqlserver://ServerIP;databaseName="";integratedSecurity=true","<userId>","<password>");
String query ="select query";
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery(query);
while (rs.next()) {
vars.put("promotionInstanceId", rs.getString(1)); //The query returns an instanceId which i need to store in a variable and use it later
log.info("Promotion Instance is " + ${promotionInstanceId});
}
conn.close();
}
catch (Exception e) {
e.printStackTrace();
Can anyone help me in understanding where i might have gone wrong ?
Any reason to use the timer? The warning you're getting is about missing return keyword as the JSR223 Timer is intended to be used for calculation of virtual user think time therefore it should return the value to "sleep" in milliseconds. Given you don't want to introduce the think time it makes sense to go for JSR223 PostProcessor instead.
Don't inline JMeter functions or variables into the scripts as it might cause script misbehavior due to clashing with GString template or the variable will be cached and the same value will be returned for the subsequent calls.
It is recommended to use JMeter's built-in components and avoid scripting where possible, you can use i.e. JDBC PostProcessor in order to extract the interesting value(s) and store it(them) into JMeter Variables. Check out Debugging JDBC Sampler Results in JMeter article to learn how to execute SQL statements and work with results
You should use vars.get to get variable value
vars.put("promotionInstanceId", rs.getString(1)); //The query returns an instanceId which i need to store in a variable and use it later
log.info("Promotion Instance is " + vars.get("promotionInstanceId"));
I would like to read values from a select query and use the values sequentially in a API call.
Since the database values get stored as var_1, var_2 ... var_N
So how do i increment the number for the variable?
I used a counter and pre processor to increment the number in variable
vars.put ("email", "email"+"_"+vars.get("counter"))
But the final variable is not getting replaced by the value from the select query
eg select query result from a debug sampler
email_1=hata.pd.h13u#yopmail.com
email_2=hata.pd.h13u#yopmail.com
email_3=hataiot.test13#mailinator.com
email_4=hataiot.test12#mailinator.com
--combining the variable and counter:
vars.put ("email", "email"+"_"+vars.get("counter"))
--using the variable in the API post body
{
"username":"${email}",
"password":"test1234"
}
Actual result:
POST data:
{
"username":"email_1",
"password":"test1234"
}
Expected result:
{
"username":"hata.pd.h13u#yopmail.com",
"password":"test1234"
}
TIA
${__V(email_${counter})}
Try this one, see also the documentation: http://jmeter.apache.org/usermanual/functions.html#what_can_do
Note that variables cannot currently be nested; i.e. ${Var${N}} does not work. The __V (variable) function can be used to do this: ${__V(Var${N})}. You can also use ${__BeanShell(vars.get("Var${N}")}.
Have you considered using ForEach Controller? It's super-handy for iterating the variables from extractors or JDBC test elements.
If you still want to continue with the current approach you need to change this line:
vars.put ("email", "email"+"_"+vars.get("counter"))
to this one:
vars.put ("email", vars.get("email"+"_"+vars.get("counter")))
Because you're putting into email variable stuff like email_1, email_2, etc. instead of actual ${email_1} variable value.
References:
JMeter Functions and Variables
How to Retrieve Database Data for API Testing with JMeter
I know they advice to get a cell value this way:
columnValue = vars.getObject("resultObject").get(0).get("Column Name");
as stated on jMeter doc : component reference : JDBC_Request.
But: How to access the same RS cell value by just a number of the column?
RS.get(0).get(4);
...instead of giving it a String of column Name/Label.
edit 1: Lets use Groovy/Java, instead of BeanShell. Thanks.
edit 2: The original motivation was the difference between column Name / Label, as these seem to be not fully guaranteed (? seems to be not clear here, not to me), especially due case-sensitivity ("id"/"ID", "name"/"Name"/"NAME" ..)
It should be something like:
String value = (new ArrayList<String>(vars.getObject("resultObject").get(0).values())).get(4)
More information: Debugging JDBC Sampler Results in JMeter
Be aware that according to HashMap documentation:
This class makes no guarantees as to the order of the map; in particular, it does not guarantee that the order will remain constant over time.
So the order of columns might be a big question mark.
The row itself is a HashMap, defined in source code as:
HashMap<String, Object> row
So using BeanShell syntax, you could get it as
row = vars.getObject("resultObject").get(0); // returns HashMap
In HashMap, you cannot access item (column) by ID. You could, however, apply one of the methods described here, but HashMap doesn't guarantee order, so you cannot be sure what "column 4" will contain.
If you want to be able to loop through all columns, it's better to do it in a Map style, not by index. For example using entrySet() with BeanShell:
for(Map.Entry entry : row.entrySet())
{
log.info(entry.getKey() + "=" + entry.getValue());
}
See various ways to iterate through Map here.
I am using Jmeter for performance testing and stuck at following point:
I am getting a JSON response from Webapi as follows:
PersonInfoList:
Person
[0]
{
id: 1
name: Steve
}
[1]
Person
{
id: 2
name: Mark
}
I need to get the ids based on the count of this JSON array and create a comma separated string as ("Expected value" = 1,2)
I know how to read a particular element using JSON Post processor or Regex processor but am unable to loop through the array and create a string as explained so that I can use this value in my next sampler request.
Please help me out with this: I am using Jmeter 3.0 and if this could be achieved without using external third party libs that would be great. Sorry for the JSON syntax above
Actually similar functionality comes with JSON Path PostProcessor which appeared in JMeter 3.0. In order to get all the values in a single variable configure JSON Path PostProcessor as follows:
Variable Names: anything meaningful, i.e. id
JSON Path Expressions: $..id or whatever you use to extract the ids
Match Numbers: -1
Compute concatenation var (suffix _ALL): check
As a result you'll get id_ALL variable which will contain all JSON Path expression matches (comma-separated)
More "universal" answer which will be applicable for any other extractor types and in fact will allow to concatenate any arbitrary JMeter Variables is using scripting (besides if you need this "expected value and parentheses)
In order to concatenate all variables which names start with "id" into a single string add Beanshell PostProcessor somewhere after JSON Path PostProcessor and put the following code into "Script" area
StringBuilder result = new StringBuilder();
result.append("(\"Expected value\" = ");
Iterator iterator = vars.getIterator();
while (iterator.hasNext()) {
Map.Entry e = (Map.Entry) iterator.next();
if (e.getKey().matches("id_(\\d+)")) {
result.append(e.getValue());
result.append(",");
}
}
result.append(")");
vars.put("expected_value", result.toString());
Above code will store the resulting string into ${expected value} JMeter Variable. See How to Use BeanShell: JMeter's Favorite Built-in Component article for more information regarding bypassing JMeter limitations using scripting and using JMeter and Java API from Beanshell test elements.
Demo: