Looping in a C-style For loop instead of using each

Question

how can i loop through a json file using a FOR loop in groovy? I am able to do it with .each but i am in a situation/bug where i cannot use .each loops.

The json file is being read and parsed into an object.

The json looks like this:

{
    "workflows1": {
        "name": "/wf_multifolder",
        "file": "release1/wf_multifolder.XML",
        "folderNames": {
            "multifolder": "{{multifolder}}",
            "agent1": "{{agentx}}"
        }
    },
    "workflows2": {
        "name": "/wf_multifolder",
        "file": "release1/wf_multifolder.XML",
        "folderNames": {
            "multifolder": "{{multifolder}}",
            "agent1": "{{agentx}}"
        }
    }
}

Note: i can modify the json file, if need to make the process simpler.. All i am try to do is to loop throgh and extract the values for the keys.

Because jenkins doesn't like each ... there is a limitation in this tool. I will paste the jira story # on this — OK999
– OK999, Commented Apr 8, 2017 at 12:18

tim_yates · Accepted Answer · 2017-04-08 16:35:28Z

1

So given the json in a String like so:

def jsonText = '''{
    "workflows1": {
        "name": "/wf_multifolder",
        "file": "release1/wf_multifolder.XML",
        "folderNames": {
            "multifolder": "{{multifolder}}",
            "agent1": "{{agentx}}"
        }
    },
    "workflows2": {
        "name": "/wf_multifolder",
        "file": "release1/wf_multifolder.XML",
        "folderNames": {
            "multifolder": "{{multifolder}}",
            "agent1": "{{agentx}}"
        }
    }
}'''

You can just do:

import groovy.json.*

def json = new JsonSlurper().parseText(jsonText)

for(entry in json) {
    println "$entry.key has file $entry.value.file"
}

to print:

workflows1 has file release1/wf_multifolder.XML
workflows2 has file release1/wf_multifolder.XML

answered Apr 8, 2017 at 16:35

tim_yates

172k29 gold badges359 silver badges354 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

OK999 Over a year ago

thanks, but i think i will need to use a counter, so that i can iterate through the values of the say, workflow1 and then workflows2 .... so on.

drewish Over a year ago

I thought using the for in looping would cause problems with CPS?

Collectives™ on Stack Overflow

Looping in a C-style For loop instead of using each

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related