Issue 639 in google-gson: Serialization of NaN/Inf with complex map key serialization and special floating point values enabled is broken

[googl...@googlecode.com]

Status: New
Owner: ----
Labels: Type-Defect Priority-Medium

New issue 639 by kaspar....@gmail.com: Serialization of NaN/Inf with
complex map key serialization and special floating point values enabled is
broken
https://code.google.com/p/google-gson/issues/detail?id=639

What steps will reproduce the problem?

1. Run the following code snippet:

Map map = new HashMap();
map.put(Double.NaN, "x");
System.out.println(new GsonBuilder()
.enableComplexMapKeySerialization()
.serializeSpecialFloatingPointValues()
.create()
.toJson(map));



What is the expected output? What do you see instead?

Expected:

{"NaN":"x"}

Actual:

Exception in thread "main" java.lang.IllegalArgumentException: JSON forbids
NaN and infinities: NaN
at
com.google.gson.internal.bind.JsonTreeWriter.value(JsonTreeWriter.java:183)
at
com.google.gson.internal.bind.TypeAdapters$10.write(TypeAdapters.java:298)
at
com.google.gson.internal.bind.TypeAdapters$10.write(TypeAdapters.java:287)
at
com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:68)
at com.google.gson.TypeAdapter.toJsonTree(TypeAdapter.java:230)
at
com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.write(MapTypeAdapterFactory.java:219)
at
com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.write(MapTypeAdapterFactory.java:145)
at com.google.gson.Gson.toJson(Gson.java:595)
at com.google.gson.Gson.toJson(Gson.java:574)
at com.google.gson.Gson.toJson(Gson.java:529)
at com.google.gson.Gson.toJson(Gson.java:509)



What version of the product are you using? On what operating system?
- Gson 2.3.1
- Windows 7 Enterprise, Servie Pack 1



Please provide any additional information below.

Looks like the complex map key serialization doesn't forward the lenient
flag from the JsonWriter to the JsonTreeWriter, hence the error.


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[googl...@googlecode.com]

Comment #1 on issue 639 by kaspar....@gmail.com: Serialization of

NaN/Inf with complex map key serialization and special floating point
values enabled is broken
https://code.google.com/p/google-gson/issues/detail?id=639

Correction: The above stack trace is for 2.3. The stack trace for 2.3.1 is:

Exception in thread "main" java.lang.IllegalArgumentException: JSON forbids
NaN and infinities: NaN
at
com.google.gson.internal.bind.JsonTreeWriter.value(JsonTreeWriter.java:183)
at
com.google.gson.internal.bind.TypeAdapters$10.write(TypeAdapters.java:298)
at
com.google.gson.internal.bind.TypeAdapters$10.write(TypeAdapters.java:287)
at
com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:68)
at com.google.gson.TypeAdapter.toJsonTree(TypeAdapter.java:230)
at
com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.write(MapTypeAdapterFactory.java:219)
at
com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.write(MapTypeAdapterFactory.java:145)

at com.google.gson.Gson.toJson(Gson.java:600)
at com.google.gson.Gson.toJson(Gson.java:579)
at com.google.gson.Gson.toJson(Gson.java:534)
at com.google.gson.Gson.toJson(Gson.java:514)