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PumpAction
[Schmadmin]

Posts: 26759

Posted: Tue, 20th Nov 2018 11:52 Post subject: Get POJO Object from JSONPath

Let's say I have a simple POJO

Code:

public class Human() {
private List<Limb> limbs;
private HashMap<String, String> basicProperties;
private Date birthday;
private String name;

public static class Limb {
   private String name;
   private long length;
   private String whatever;

   ... Getters and Setters;
}

... Getters and Setters;
}

Now I can set and change values programatically by specifying f.e.:
Scenario 1: Setting the name of the human to dude

Code:

human.setName("dude");

Scenario 2: Setting the name of the limb with the name of "bla" to "blabla"

Code:

for(Limb limb: human.getLimbs())
if (limb.getName().equals("bla")){
   limb.setName("blabla");
   break;
}

I'd rather use a jsonpath though to set the values of my pojo.

So the call should rather look like uh...

Scenario 1:

Code:

setPOJOValue(human, "name", "dude");

Scenario 2:

Code:

setPOJOValue(human, "limbs[name='bla']", "blabla");

or...
Scenario 1:

Code:

human.setWithJson("name", "dude")

Scenario 2:

Code:

human.setWithJson("limbs[name='bla']", "blabla");

Any idea which library to use and how? I already have Jackson available. I'd rather not modify my POJO though and would like to use a function like my fictious setPOJOValue.

Thanks!

=> NFOrce GIF plugin <= - Ryzen 3800X, 16GB DDR4-3200, Sapphire 5700XT Pulse

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Areius

Posts: 14707

Posted: Tue, 20th Nov 2018 13:45 Post subject:	Quick Quote Quote

Pfft, it's been a while since I've used Java. Perhaps https://github.com/google/gson can do what you want? Does it need to be in Java? I dislike Java so much In C# you can use Json.NET and set that up in a few LOC. PC: Yes. Console: No.

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PumpAction
[Schmadmin]

Posts: 26759

Posted: Tue, 20th Nov 2018 14:16 Post subject:	Quick Quote Quote

Jupp, has to be java. gson seems to have that but only to find the correct object in a passed json. So I would have to convert my pojo into json and then use gson to find the correct position, but I want to update the original java object... so that is not an option => NFOrce GIF plugin <= - Ryzen 3800X, 16GB DDR4-3200, Sapphire 5700XT Pulse

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