// Existing test (above) simplified for SO question "Deserialize json array stream one item at a time":
// ( http://stackoverflow.com/questions/20374083/deserialize-json-array-stream-one-item-at-a-time )
static void FilteredFatherStreamTestSimplified()
{
// Get our parser:
var parser = new JsonParser();
// (Note this will be invoked thanks to the "filters" dictionary below)
Func <object, object> filteredFatherStreamCallback = obj =>
{
Father father = (obj as Father);
// Output only the individual fathers that the filters decided to keep (i.e., when obj.Type equals typeof(Father)),
// but don't output (even once) the resulting array (i.e., when obj.Type equals typeof(Father[])):
if (father != null)
{
Console.WriteLine("\t\tId : {0}\t\tName : {1}", father.id, father.name);
}
// Do not project the filtered data in any specific way otherwise,
// just return it deserialized as-is:
return(obj);
};
// Prepare our filter, and thus:
// 1) we want only the last five (5) fathers (array index in the resulting "Father[]" >= 29,995),
// (assuming we somehow have prior knowledge that the total count is 30,000)
// and for each of them,
// 2) we're interested in deserializing them with only their "id" and "name" properties
var filters =
new Dictionary <Type, Func <Type, object, object, int, Func <object, object> > >
{
// We don't care about anything but these 2 properties:
{
typeof(Father), // Note the type
(type, obj, key, index) =>
((key as string) == "id" || (key as string) == "name") ?
filteredFatherStreamCallback :
JsonParser.Skip
},
// We want to pick only the last 5 fathers from the source:
{
typeof(Father[]), // Note the type
(type, obj, key, index) =>
(index >= 29995) ?
filteredFatherStreamCallback :
JsonParser.Skip
}
};
// Read, parse, and deserialize fathers.json.txt in a streamed fashion,
// and using the above filters, along with the callback we've set up:
using (var reader = new System.IO.StreamReader(FATHERS_TEST_FILE_PATH))
{
FathersData data = parser.Parse <FathersData>(reader, filters);
System.Diagnostics.Debug.Assert
(
(data != null) &&
(data.fathers != null) &&
(data.fathers.Length == 5)
);
foreach (var i in Enumerable.Range(29995, 5))
{
System.Diagnostics.Debug.Assert
(
(data.fathers[i - 29995].id == i) &&
!String.IsNullOrEmpty(data.fathers[i - 29995].name)
);
}
}
Console.ReadKey();
}
// This test deserializes the last ten (10) fathers found in fathers.json.txt,
// and performs a fixup of the maiden names (all absent from fathers.json.txt)
// of their daughters (if any):
static void FilteredFatherStreamTestDaughterMaidenNamesFixup()
{
Console.Clear();
Console.WriteLine("\"Fathers\" Test... streamed AND filtered");
Console.WriteLine();
Console.WriteLine("(static void FilteredFatherStreamTestDaughterMaidenNamesFixup())");
Console.WriteLine();
Console.WriteLine("(press a key)");
Console.WriteLine();
Console.ReadKey();
// Get our parser:
var parser = new JsonParser();
// (Note this will be invoked thanks to the "filters" dictionary below)
Func <object, object> filteredFatherStreamCallback = obj =>
{
Father father = (obj as Father);
// Processes only the individual fathers that the filters decided to keep
// (i.e., iff obj.Type equals typeof(Father))
if (father != null)
{
if ((father.daughters != null) && (father.daughters.Length > 0))
{
// The fixup of the maiden names is done in-place, on
// by-then freshly deserialized father's daughters:
foreach (var daughter in father.daughters)
{
daughter.maidenName = father.name.Substring(father.name.IndexOf(' ') + 1);
}
}
}
// Do not project the filtered data in any specific way otherwise,
// just return it deserialized as-is:
return(obj);
};
// Prepare our filters, i.e., we want only the last ten (10) fathers
// (array index in the resulting "Father[]" >= 29990)
var filters =
new Dictionary <Type, Func <Type, object, object, int, Func <object, object> > >
{
// Necessary to perform post-processing on the daughters (if any)
// of each father we kept in "Father[]" via the 2nd filter below:
{
typeof(Father), // Note the type
(type, obj, key, index) => filteredFatherStreamCallback
},
// We want to pick only the last 10 fathers from the source:
{
typeof(Father[]), // Note the type
(type, obj, key, index) =>
(index >= 29990) ?
filteredFatherStreamCallback :
JsonParser.Skip
}
};
// Read, parse, and deserialize fathers.json.txt in a streamed fashion,
// and using the above filters, along with the callback we've set up:
using (var reader = new System.IO.StreamReader(FATHERS_TEST_FILE_PATH))
{
FathersData data = parser.Parse <FathersData>(reader, filters);
System.Diagnostics.Debug.Assert
(
(data != null) &&
(data.fathers != null) &&
(data.fathers.Length == 10)
);
foreach (var father in data.fathers)
{
Console.WriteLine();
Console.WriteLine("\t\t{0}'s daughters:", father.name);
if ((father.daughters != null) && (father.daughters.Length > 0))
{
foreach (var daughter in father.daughters)
{
System.Diagnostics.Debug.Assert
(
!String.IsNullOrEmpty(daughter.maidenName)
);
Console.WriteLine("\t\t\t\t{0} {1}", daughter.name, daughter.maidenName);
}
}
else
{
Console.WriteLine("\t\t\t\t(None)");
}
}
}
Console.WriteLine("Press a key...");
Console.ReadKey();
}
static void SpeedTests()
{
#if !JSON_PARSER_ONLY
LoopTest(typeof(JavaScriptSerializer).FullName, new JavaScriptSerializer().DeserializeObject, OJ_TEST_FILE_PATH, 10000);
LoopTest("JSON.NET 5.0 r8", JsonConvert.DeserializeObject, OJ_TEST_FILE_PATH, 10000);
//LoopTest("ServiceStack", new JsonSerializer<object>().DeserializeFromString, OJ_TEST_FILE_PATH, 10000);
#endif
LoopTest(typeof(JsonParser).FullName, new JsonParser().Parse <object>, OJ_TEST_FILE_PATH, 10000);
#if !JSON_PARSER_ONLY
LoopTest(typeof(JavaScriptSerializer).FullName, new JavaScriptSerializer().Deserialize <HighlyNested>, OJ_TEST_FILE_PATH, 10000);
LoopTest("JSON.NET 5.0 r8", JsonConvert.DeserializeObject <HighlyNested>, OJ_TEST_FILE_PATH, 10000);
LoopTest("ServiceStack", new JsonSerializer <HighlyNested>().DeserializeFromString, OJ_TEST_FILE_PATH, 10000);
#endif
LoopTest(typeof(JsonParser).FullName, new JsonParser().Parse <HighlyNested>, OJ_TEST_FILE_PATH, 10000);
#if !JSON_PARSER_ONLY
LoopTest(typeof(JavaScriptSerializer).FullName, new JavaScriptSerializer().DeserializeObject, OJ_TEST_FILE_PATH, 100000);
LoopTest("JSON.NET 5.0 r8", JsonConvert.DeserializeObject, OJ_TEST_FILE_PATH, 100000);
//LoopTest("ServiceStack", new JsonSerializer<object>().DeserializeFromString, OJ_TEST_FILE_PATH, 100000);
#endif
LoopTest(typeof(JsonParser).FullName, new JsonParser().Parse <object>, OJ_TEST_FILE_PATH, 100000);
#if !JSON_PARSER_ONLY
LoopTest(typeof(JavaScriptSerializer).FullName, new JavaScriptSerializer().Deserialize <HighlyNested>, OJ_TEST_FILE_PATH, 100000);
LoopTest("JSON.NET 5.0 r8", JsonConvert.DeserializeObject <HighlyNested>, OJ_TEST_FILE_PATH, 100000);
LoopTest("ServiceStack", new JsonSerializer <HighlyNested>().DeserializeFromString, OJ_TEST_FILE_PATH, 100000);
#endif
LoopTest(typeof(JsonParser).FullName, new JsonParser().Parse <HighlyNested>, OJ_TEST_FILE_PATH, 100000);
#if !JSON_PARSER_ONLY
LoopTest(typeof(JavaScriptSerializer).FullName, new JavaScriptSerializer().Deserialize <BoonSmall>, BOON_SMALL_TEST_FILE_PATH, 1000000);
LoopTest("JSON.NET 5.0 r8", JsonConvert.DeserializeObject <BoonSmall>, BOON_SMALL_TEST_FILE_PATH, 1000000);
LoopTest("ServiceStack", new JsonSerializer <BoonSmall>().DeserializeFromString, BOON_SMALL_TEST_FILE_PATH, 1000000);
#endif
LoopTest(typeof(JsonParser).FullName, new JsonParser().Parse <BoonSmall>, BOON_SMALL_TEST_FILE_PATH, 1000000);
#if !JSON_PARSER_ONLY
LoopTest(typeof(JavaScriptSerializer).FullName, new JavaScriptSerializer().Deserialize <BoonSmall>, BOON_SMALL_TEST_FILE_PATH, 10000000);
LoopTest("JSON.NET 5.0 r8", JsonConvert.DeserializeObject <BoonSmall>, BOON_SMALL_TEST_FILE_PATH, 10000000);
LoopTest("ServiceStack", new JsonSerializer <BoonSmall>().DeserializeFromString, BOON_SMALL_TEST_FILE_PATH, 10000000);
#endif
LoopTest(typeof(JsonParser).FullName, new JsonParser().Parse <BoonSmall>, BOON_SMALL_TEST_FILE_PATH, 10000000);
#if !JSON_PARSER_ONLY
LoopTest(typeof(JavaScriptSerializer).FullName, new JavaScriptSerializer().Deserialize <Person>, TINY_TEST_FILE_PATH, 10000);
LoopTest("JSON.NET 5.0 r8", JsonConvert.DeserializeObject <Person>, TINY_TEST_FILE_PATH, 10000);
LoopTest("ServiceStack", new JsonSerializer <Person>().DeserializeFromString, TINY_TEST_FILE_PATH, 10000);
#endif
LoopTest(typeof(JsonParser).FullName, new JsonParser().Parse <Person>, TINY_TEST_FILE_PATH, 10000);
#if !JSON_PARSER_ONLY
LoopTest(typeof(JavaScriptSerializer).FullName, new JavaScriptSerializer().Deserialize <Person>, TINY_TEST_FILE_PATH, 100000);
LoopTest("JSON.NET 5.0 r8", JsonConvert.DeserializeObject <Person>, TINY_TEST_FILE_PATH, 100000);
LoopTest("ServiceStack", new JsonSerializer <Person>().DeserializeFromString, TINY_TEST_FILE_PATH, 100000);
#endif
LoopTest(typeof(JsonParser).FullName, new JsonParser().Parse <Person>, TINY_TEST_FILE_PATH, 100000);
#if !JSON_PARSER_ONLY
LoopTest(typeof(JavaScriptSerializer).FullName, new JavaScriptSerializer().Deserialize <Person>, TINY_TEST_FILE_PATH, 1000000);
LoopTest("JSON.NET 5.0 r8", JsonConvert.DeserializeObject <Person>, TINY_TEST_FILE_PATH, 1000000);
LoopTest("ServiceStack", new JsonSerializer <Person>().DeserializeFromString, TINY_TEST_FILE_PATH, 1000000);
#endif
LoopTest(typeof(JsonParser).FullName, new JsonParser().Parse <Person>, TINY_TEST_FILE_PATH, 1000000);
#if !JSON_PARSER_ONLY
//LoopTest(typeof(JavaScriptSerializer).FullName, new JavaScriptSerializer().Deserialize<DictionaryDataAdaptJsonNetServiceStack>, DICOS_TEST_FILE_PATH, 10000);//(Can't deserialize properly)
LoopTest("JSON.NET 5.0 r8", JsonConvert.DeserializeObject <DictionaryDataAdaptJsonNetServiceStack>, DICOS_TEST_FILE_PATH, 10000);
LoopTest("ServiceStack", new JsonSerializer <DictionaryDataAdaptJsonNetServiceStack>().DeserializeFromString, DICOS_TEST_FILE_PATH, 10000);
#endif
LoopTest(typeof(JsonParser).FullName, new JsonParser().Parse <DictionaryData>, DICOS_TEST_FILE_PATH, 10000);
#if !JSON_PARSER_ONLY
//LoopTest(typeof(JavaScriptSerializer).FullName, new JavaScriptSerializer().Deserialize<DictionaryDataAdaptJsonNetServiceStack>, DICOS_TEST_FILE_PATH, 100000);//(Can't deserialize properly)
LoopTest("JSON.NET 5.0 r8", JsonConvert.DeserializeObject <DictionaryDataAdaptJsonNetServiceStack>, DICOS_TEST_FILE_PATH, 100000);
LoopTest("ServiceStack", new JsonSerializer <DictionaryDataAdaptJsonNetServiceStack>().DeserializeFromString, DICOS_TEST_FILE_PATH, 100000);
#endif
LoopTest(typeof(JsonParser).FullName, new JsonParser().Parse <DictionaryData>, DICOS_TEST_FILE_PATH, 100000);
#if !JSON_PARSER_ONLY
//LoopTest(typeof(JavaScriptSerializer).FullName, new JavaScriptSerializer().Deserialize<DictionaryDataAdaptJsonNetServiceStack>, DICOS_TEST_FILE_PATH, 1000000);//(Can't deserialize properly)
LoopTest("JSON.NET 5.0 r8", JsonConvert.DeserializeObject <DictionaryDataAdaptJsonNetServiceStack>, DICOS_TEST_FILE_PATH, 1000000);
LoopTest("ServiceStack", new JsonSerializer <DictionaryDataAdaptJsonNetServiceStack>().DeserializeFromString, DICOS_TEST_FILE_PATH, 1000000);
#endif
LoopTest(typeof(JsonParser).FullName, new JsonParser().Parse <DictionaryData>, DICOS_TEST_FILE_PATH, 1000000);
#if !JSON_PARSER_ONLY
LoopTest(typeof(JavaScriptSerializer).FullName, new JavaScriptSerializer().DeserializeObject, SMALL_TEST_FILE_PATH, 10000);
LoopTest("JSON.NET 5.0 r8", JsonConvert.DeserializeObject, SMALL_TEST_FILE_PATH, 10000);
//LoopTest("ServiceStack", new JsonSerializer<object>().DeserializeFromString, SMALL_TEST_FILE_PATH, 10000);
#endif
LoopTest(typeof(JsonParser).FullName, new JsonParser().Parse <object>, SMALL_TEST_FILE_PATH, 10000);
#if !JSON_PARSER_ONLY
LoopTest(typeof(JavaScriptSerializer).FullName, new JavaScriptSerializer().DeserializeObject, SMALL_TEST_FILE_PATH, 100000);
LoopTest("JSON.NET 5.0 r8", JsonConvert.DeserializeObject, SMALL_TEST_FILE_PATH, 100000);//(JSON.NET: OutOfMemoryException)
//LoopTest("ServiceStack", new JsonSerializer<object>().DeserializeFromString, SMALL_TEST_FILE_PATH, 100000);
#endif
LoopTest(typeof(JsonParser).FullName, new JsonParser().Parse <object>, SMALL_TEST_FILE_PATH, 100000);
#if !JSON_PARSER_ONLY
var msJss = new JavaScriptSerializer()
{
MaxJsonLength = int.MaxValue
};
Test(typeof(JavaScriptSerializer).FullName, msJss.Deserialize <FathersData>, FATHERS_TEST_FILE_PATH);
Test("JSON.NET 5.0 r8", JsonConvert.DeserializeObject <FathersData>, FATHERS_TEST_FILE_PATH);
Test("ServiceStack", new JsonSerializer <FathersData>().DeserializeFromString, FATHERS_TEST_FILE_PATH);
#endif
Test(typeof(JsonParser).FullName, new JsonParser().Parse <FathersData>, FATHERS_TEST_FILE_PATH);
if (File.Exists(HUGE_TEST_FILE_PATH))
{
#if !JSON_PARSER_ONLY
Test(typeof(JavaScriptSerializer).FullName, msJss.DeserializeObject, HUGE_TEST_FILE_PATH);
Test("JSON.NET 5.0 r8", JsonConvert.DeserializeObject, HUGE_TEST_FILE_PATH);//(JSON.NET: OutOfMemoryException)
//Test("ServiceStack", new JsonSerializer<object>().DeserializeFromString, HUGE_TEST_FILE_PATH);
#endif
Test(typeof(JsonParser).FullName, new JsonParser().Parse <object>, HUGE_TEST_FILE_PATH);
}
StreamTest(null);
// Note this will be invoked thru the filters dictionary passed to this 2nd "StreamTest" below, in order to:
// 1) for each "Father", skip the parsing of the properties to be ignored (i.e., all but "id" and "name")
// 2) while populating the resulting "Father[]" array, skip the deserialization of the first 29,995 fathers
Func <object, object> mapperCallback = obj =>
{
Father father = (obj as Father);
// Output only the individual fathers that the filters decided to keep
// (i.e., when obj.Type equals typeof(Father)),
// but don't output (even once) the resulting array
// (i.e., when obj.Type equals typeof(Father[])):
if (father != null)
{
Console.WriteLine("\t\tId : {0}\t\tName : {1}", father.id, father.name);
}
// Do not project the filtered data in any specific way otherwise, just return it deserialized as-is:
return(obj);
};
StreamTest
(
new Dictionary <Type, Func <Type, object, object, int, Func <object, object> > >
{
// We don't care about anything but these 2 properties:
{
typeof(Father),
(type, obj, key, index) =>
((key as string) == "id" || (key as string) == "name") ?
mapperCallback :
JsonParser.Skip
},
// We want to pick only the last 5 fathers from the source:
{
typeof(Father[]),
(type, obj, key, index) =>
(index >= 29995) ?
mapperCallback :
JsonParser.Skip
}
}
);
FilteredFatherStreamTestDaughterMaidenNamesFixup();
}
