Bloblet type (#1190)

Co-authored-by: Johannes Terblanche <[email protected]>

Author: Affie

src/DistributedFactorGraphs.jl

@@ -521,6 +521,7 @@ end
 include("errors.jl")
 
 include("entities/AbstractDFG.jl")
+include("entities/Bloblet.jl")
 
 # Data Blob extensions
 include("DataBlobs/entities/BlobEntry.jl")

src/entities/Bloblet.jl

@@ -0,0 +1,23 @@
+struct Bloblet
+    label::Symbol
+    val::String
+end
+
+const Bloblets = LittleDict{Symbol, Bloblet}
+
+StructUtils.structlike(::Type{Bloblets}) = false
+StructUtils.arraylike(::Type{Bloblets}) = false
+StructUtils.dictlike(::Type{Bloblets}) = false
+StructUtils.noarg(::Type{Bloblets}) = false
+
+function StructUtils.lower(bloblet::Bloblets)
+    return map(collect(values(bloblet))) do (m)
+        return (label = m.label, val = m.val)
+    end
+end
+
+function StructUtils.lift(::Type{Bloblets}, json_vector::Vector)
+    return Bloblets(
+        Symbol(x["label"]) => Bloblet(Symbol(x["label"]), x["val"]) for x in json_vector
+    )
+end