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Data Structures JSON: How to access of the json data: not directly but by redirection in loop?

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asked Apr 7, 2020 in Question / help by The-Lu (64,340 points)

For example, if we add a team for each participants ; and a new field color:

!$data={"partlen": "2", "game": "GamePlantuml", "participants": [
{"name": "XYZ" ,"as": "xyz", "team": "A"},
{"name": "RST" ,"as": "rst", "team": "B"},
{"name": "UVW" ,"as": "uvw", "team": "B"}],
"color": {"A": "red", "B": "blue"}
}

How to access to the color of the team, from a participant on a foreach loop?

According to: the last answer and the usage of '%string()'

We test:

  1. :access to json: [$data.color.A, $data.color.B] $part.team -> $data.color.%string($part.team);
  2. :access to json: [$data.color.A, $data.color.B] $part.team -> $data.color[$part.team];

  3. :access to json: [$data.color.A, $data.color.B] $part.team -> $data.color.($part.team);

  4. :access to json: [$data.color.A, $data.color.B] $part.team -> %get_variable_value($data.color,".",$part.team);

But with no success.

  • Is it possible with te current version?
  • or is it on the road map of a new release?

Here is the full code:

@startuml
!$data={"partlen": "2", "game": "GamePlantuml", "participants": [
{"name": "XYZ" ,"as": "xyz", "team": "A"},
{"name": "RST" ,"as": "rst", "team": "B"},
{"name": "UVW" ,"as": "uvw", "team": "B"}],
"color": {"A": "red", "B": "blue"}
}

:a;
!foreach $part in $data.participants
  :$part.name as $part.as;
  :access to json: [$data.color.A, $data.color.B] $part.team -> $data.color of $part.team;
  ':access to json: [$data.color.A, $data.color.B] $part.team -> $data.color.%string($part.team);
  ':access to json: [$data.color.A, $data.color.B] $part.team -> $data.color[$part.team];
  ':access to json: [$data.color.A, $data.color.B] $part.team -> $data.color.($part.team);
  ':access to json: [$data.color.A, $data.color.B] $part.team -> %get_variable_value($data.color,".",$part.team);
!endfor
:b;
@enduml

http://www.plantuml.com/plantuml/uml/hOzFRy8m3CNl-HJ60er9MGyx5cq2BhjE-xyXD9aIMASqGKdA_Y2---A2rB1pJ_7p-yL-7lj0BjIL5ht-aW9TxN0J6rePp04lKGAkgL8iRk9xgyampNtcogBSn8wF_apiq1pHbzSt18daMNp__38U55Ki9xYN2Nft_z2YpeSKdPwYZq_FBLfll_wXSocmiDgwg7SuuQvJIuQcN2zqhN0lzaBaD1AzbNMAYW_eynbG6cZEpzAZ143Us1ad0F9mKEH7R55HAEyXMFZqrkGmEqne8cGJ2QcSpez_EIzSNAScs5LYykYppcPd0nzSQTR3bZZlTiEiTUOTP-yuz62jmlkMN4aBhMAXQpLCFaZCK9vix2cpN5adyiL8Z6DTL_eF

Regard,

related to an answer for: Data Structures JSON: How to concatenate values from json table?

1 Answer

0 votes
answered Apr 7, 2020 by plantuml (295,000 points)
selected Apr 20, 2020 by The-Lu
 
Best answer

Thanks for the feedback.

This is fixed in last beta http://beta.plantuml.net/plantuml.jar

@startuml
!$data={"partlen": "2", "game": "GamePlantuml", "participants": [
{"name": "XYZ" ,"as": "xyz", "team": "A"},
{"name": "RST" ,"as": "rst", "team": "B"},
{"name": "UVW" ,"as": "uvw", "team": "B"}],
"color": {"A": "red", "B": "blue"}
}

:a;
!foreach $part in $data.participants
  :$part.name as $part.as;
  :1 access to json: [$data.color.A, $data.color.B] $part.team -> $data.color of $part.team;
  :2 access to json: [$data.color.A, $data.color.B] $part.team -> $data.color[$part.team];
!endfor
:b;
@enduml

http://www.plantuml.com/plantuml/uml/hP3DReCm48JlVehDAaUAr1n1hGANNgl-jn673JWjbR4Zs_IdY7UlbqJ2xJadTcO-LZjUEq_MzvqIYsL3dYu6t0T3IOqPu0eJm5Vg98khyBrMf9bcdxcsRlV1SI7VY07r4NrwVa58aDZ7h-yVnhsaZcM1OnAXDxTtCsgTZz7oBth_y3YZ_SVdFxHA1DP66HlqW0MxLZOCbJnlLIzn5ACG6ULYiJDMKlq6Iwu1hOQfVXgN4W3P5ATy0P23WoANStGELDVIEV06tftHuGaEEwOZqYA1M9RLyM--6Cukun3CBWgdvQkJBT_CIHLwIzs4wYBRvc8TvhvJlm00

There are probably other issues, so do not hesitate to post again !

Thanks

commented Apr 8, 2020 by The-Lu (64,340 points)

That's OK for direct access. Thanks.

But if we will acess by temporary variable : that does'nt work! :

  !$c=$data.color[$part.team]
  :3 access to json, **with var**: $part.team -> $c;

http://www.plantuml.com/plantuml/uml/hOzFJm8n4CNl_HIp4qwRbKIyxGO3NBmQ_olXC9GYQxejQRkW4hwxdOM4IkBDK-VD-_NDpCW7Sg5jjCXw2meqtE4wDhGoM08Ei01yfqQnk8dlhIR3DFUPgsMzZXqV_QdOeJcYBwzl20MIP_7vzSruKDIm7EE-ID2x-uSJwdn8qSblzF7f-OIsc-qPEYi4IgkjYtg7uovFBHYQS3tNhSAzs0jHKYMofNMAv0fwV0RK1hhp--bH0g3ix3vl0EJXeCXNR5q2IQcyXs3XmrjJmlIGqItH7nUGoidi-9itXelhr0IxJCmkVF1luTEJC-Feh2U7VzWy-EfiS05vlgt32ZRayhmydoChaIcpM5edodabHh5k6_q3


Then:

  • Is it possible to have got several level of indirection?

Like:

  :3 access to json, **with multiple indirection**: $part.team -> $data[$data.color[$part.team]]["paler"];

And:
http://www.plantuml.com/plantuml/uml/hP0_JyCm4CLtVughrIaAbIXRAb3RXHNn7w8CryIbfeuTsGwbLFtk-99ADHLiJCcxz_CxtPiwZzQtjMA3OOKUBtUy2GCbDC-0ZtaA_0rhGU8wV6yKQg9fJfmiPHCcBlWvst5zG9zVNZca71s9p-qNuLvWJNB6zsc4tjxT7r7hV8pEVw8FZqz7jFtOdA15odXfbB51xy8QoXCLGNFwNwXMK1uDYGW7j5P4L8DAMDADr6iY-oSnsazYrgstVJ3RCvRXX0sMnWeiLp2aVa1gw7eTnMqnWAopHtGQe8DUePkGTGvObi8vy0RUdT6XspwZksuqIo6My-Bmcgg0iwlO1BECp2vy_6_X-T4fkkYBa-WKacGZ_GhgLddPA17QgAGLfPT69qdsMtJ-nu8YFtGULWs4haBBB5jCs3JyjxNw1W00

Regards,
Th.

commented Apr 8, 2020 by plantuml (295,000 points)
Thanks again :-)

This should be fixed in last beta http://beta.plantuml.net/plantuml.jar

Note that you should remove some quotes in your last example:

http://www.plantuml.com/plantuml/uml/hP0_JyCm4CLtVughrIaAbIXRAb3RXHNn7w8CryIbfeuTsGwbLFtk-99ADHLiJCcxz_CxtPiwZzQtjMA3OOKUBtUy2GCbDC-0ZtaA_0rhGU8wV6yKQg9fJfmiPHCcBlWvst5zG9zVNZca71s9p-qNuLvWJNB6zsc4tjxT7r7hV8pEVw8FZqz7jFtOdA15odXfbB51xy8QoXCLGNFwNwXMK1uDYGW7j5P4L8DAMDADr6iY-oSnsazYrgstVJ3RCvRXX0sMnWeiLp2aVa1gw7eTnMqnWAopHtGQe8DUePkGTGvObi8vy0RUdT6XspwZksuqIo6My-Bmcgg0iwlO1BECp2vy_6_X-T4fkkYBa-WKacGZ_GhgLddPA17QgAGLfPT69qdsMtJ-nu8YxoeFYmP2Lw5ZbYqcR1h-srfz0m00

It's not very logical, but right now it works that way...
commented Apr 8, 2020 by The-Lu (64,340 points)

Thanks for the prompt modification.

But, it remains the defect about the use of variable :

If we will acess by temporary variable : that does'nt work! :

  !$c=$data.color[$part.team]
  :3 access to json, **with var**: $part.team -> $c;

http://www.plantuml.com/plantuml/uml/hOzFJm8n4CNl_HIp4qwRbKIyxGO3NBmQ_olXC9GYQxejQRkW4hwxdOM4IkBDK-VD-_NDpCW7Sg5jjCXw2meqtE4wDhGoM08Ei01yfqQnk8dlhIR3DFUPgsMzZXqV_QdOeJcYBwzl20MIP_7vzSruKDIm7EE-ID2x-uSJwdn8qSblzF7f-OIsc-qPEYi4IgkjYtg7uovFBHYQS3tNhSAzs0jHKYMofNMAv0fwV0RK1hhp--bH0g3ix3vl0EJXeCXNR5q2IQcyXs3XmrjJmlIGqItH7nUGoidi-9itXelhr0IxJCmkVF1luTEJC-Feh2U7VzWy-EfiS05vlgt32ZRayhmydoChaIcpM5edodabHh5k6_q3

Thanks a lot,
Regards,
Th.

commented Apr 8, 2020 by plantuml (295,000 points)
It's working in the following example http://www.plantuml.com/plantuml/uml/hOy_Ry8m4CLtVuhBYIbAaKgtH5J0qhNg_nOn7CQKL8wDR0VQ8hvxVG495wbRf-JT-_dTlP4Fv4BRQ97r5XHekCDr76Xbi0GSO07uJerYSHE_jveCqpndhfRrEavyzATYX-Q8lho-8HH8diNdrpVZGL73Sepx8a7lxXzEgFCXHIU_qSUdvnFQRhPdwAmGAAssBkeTZhiyjM1emlzptIhSYxqG9L4bigLrYkGAUjm3QWDT_txQIW2KdTtd4u0y71JvYgrB82cLzn0iV7XhIfWUCheh-kC2KZcP7L_poN1ndPfWbudPXG_-BNnwScOSdVNay0-R5r-TBIuWpxTrMC66N9wNvtja9J9b5alhH3cVLs8KHTle7m00

Am I wrong ?

(It may be a cache issue for older examples)
commented Apr 8, 2020 by The-Lu (64,340 points)

It's perfect, with your new example (beginning with 'aa' and end with 'bb').

Perhaps the plantuml caches some result from old defect:


Regards,
Th.

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