Create empty object in JSON via Json4s DSL
The JSON documents I'm creating need to have a properties field, even if there are no properties.
{"foo":"bar","properties":{}} is legal, {"foo":"bar"} is illegal.
How can I define an empty object to use as the properties value using the Json4s DSL?
("foo" -> "bar") ~ ("properties" -> ???)
I have tried Map.empty, new Object, (). All of these are not the correct type.
scala json4s
asked Nov 13 '18 at 1:07
SynessoSynesso
20.1k27107166
add a comment |
The JSON documents I'm creating need to have a properties field, even if there are no properties.
{"foo":"bar","properties":{}} is legal, {"foo":"bar"} is illegal.
How can I define an empty object to use as the properties value using the Json4s DSL?
("foo" -> "bar") ~ ("properties" -> ???)
I have tried Map.empty, new Object, (). All of these are not the correct type.
scala json4s
asked Nov 13 '18 at 1:07
SynessoSynesso
20.1k27107166
add a comment |
The JSON documents I'm creating need to have a properties field, even if there are no properties.
{"foo":"bar","properties":{}} is legal, {"foo":"bar"} is illegal.
How can I define an empty object to use as the properties value using the Json4s DSL?
("foo" -> "bar") ~ ("properties" -> ???)
I have tried Map.empty, new Object, (). All of these are not the correct type.
scala json4s
asked Nov 13 '18 at 1:07
SynessoSynesso
20.1k27107166
The JSON documents I'm creating need to have a properties field, even if there are no properties.
{"foo":"bar","properties":{}} is legal, {"foo":"bar"} is illegal.
How can I define an empty object to use as the properties value using the Json4s DSL?
("foo" -> "bar") ~ ("properties" -> ???)
I have tried Map.empty, new Object, (). All of these are not the correct type.
scala json4s
scala json4s
asked Nov 13 '18 at 1:07
SynessoSynesso
20.1k27107166
asked Nov 13 '18 at 1:07
SynessoSynesso
20.1k27107166
asked Nov 13 '18 at 1:07
SynessoSynesso
20.1k27107166
asked Nov 13 '18 at 1:07
SynessoSynesso
20.1k27107166
asked Nov 13 '18 at 1:07
SynessoSynesso
20.1k27107166
20.1k27107166
add a comment |
add a comment |
1 Answer
1
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I never used Json4s, but it seemed to work with:
val map = ("foo" -> "bar") ~ ("properties" -> Nil)
Here is my full code:
import org.json4s._
import org.json4s.native.JsonMethods._
import org.json4s.JsonDSL._
val map = ("foo" -> "bar") ~ ("properties" -> Nil)
println(compact(render(map)))
answered Nov 13 '18 at 4:42
Daniel HinojosaDaniel Hinojosa
84458
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
I never used Json4s, but it seemed to work with:
val map = ("foo" -> "bar") ~ ("properties" -> Nil)
Here is my full code:
import org.json4s._
import org.json4s.native.JsonMethods._
import org.json4s.JsonDSL._
val map = ("foo" -> "bar") ~ ("properties" -> Nil)
println(compact(render(map)))
answered Nov 13 '18 at 4:42
Daniel HinojosaDaniel Hinojosa
84458
add a comment |
I never used Json4s, but it seemed to work with:
val map = ("foo" -> "bar") ~ ("properties" -> Nil)
Here is my full code:
import org.json4s._
import org.json4s.native.JsonMethods._
import org.json4s.JsonDSL._
val map = ("foo" -> "bar") ~ ("properties" -> Nil)
println(compact(render(map)))
answered Nov 13 '18 at 4:42
Daniel HinojosaDaniel Hinojosa
84458
add a comment |
I never used Json4s, but it seemed to work with:
val map = ("foo" -> "bar") ~ ("properties" -> Nil)
Here is my full code:
import org.json4s._
import org.json4s.native.JsonMethods._
import org.json4s.JsonDSL._
val map = ("foo" -> "bar") ~ ("properties" -> Nil)
println(compact(render(map)))
answered Nov 13 '18 at 4:42
Daniel HinojosaDaniel Hinojosa
84458
I never used Json4s, but it seemed to work with:
val map = ("foo" -> "bar") ~ ("properties" -> Nil)
Here is my full code:
import org.json4s._
import org.json4s.native.JsonMethods._
import org.json4s.JsonDSL._
val map = ("foo" -> "bar") ~ ("properties" -> Nil)
println(compact(render(map)))
answered Nov 13 '18 at 4:42
Daniel HinojosaDaniel Hinojosa
84458
answered Nov 13 '18 at 4:42
Daniel HinojosaDaniel Hinojosa
84458
answered Nov 13 '18 at 4:42
Daniel HinojosaDaniel Hinojosa
84458
answered Nov 13 '18 at 4:42
Daniel HinojosaDaniel Hinojosa
84458
84458
add a comment |
add a comment |
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