hex.genmodel.attributes

Class ModelJsonReader

java.lang.Object

hex.genmodel.attributes.ModelJsonReader

public class ModelJsonReader
extends java.lang.Object

Utility class for extracting model details from JSON

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	MODEL_DETAILS_FILE

Constructor Summary

Constructors

Constructor and Description
ModelJsonReader()

Method Summary

Modifier and Type	Method and Description
static boolean	elementExists(com.google.gson.JsonElement jsonElement, java.lang.String jsonPath)
static void	fillObject(java.lang.Object object, com.google.gson.JsonElement from, java.lang.String elementPath)
static <T> void	fillObjects(java.util.List<T> objects, com.google.gson.JsonArray from)
protected static com.google.gson.JsonElement	findInJson(com.google.gson.JsonElement jsonElement, java.lang.String jsonPath) Finds an element in GSON's JSON document representation
static com.google.gson.JsonObject	parseModelJson(MojoReaderBackend mojoReaderBackend)
static Table	readTable(com.google.gson.JsonObject modelJson, java.lang.String tablePath) Extracts a Table from H2O's model serialized into JSON.
static Table[]	readTableArray(com.google.gson.JsonObject modelJson, java.lang.String tablePath) Extracts a Table array from H2O's model serialized into JSON.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MODEL_DETAILS_FILE

public static final java.lang.String MODEL_DETAILS_FILE

See Also:

Constant Field Values

Constructor Detail

ModelJsonReader

public ModelJsonReader()

Method Detail

parseModelJson

public static com.google.gson.JsonObject parseModelJson(MojoReaderBackend mojoReaderBackend)

Parameters:

mojoReaderBackend -

Returns:

JsonObject representing the deserialized Json.

readTableArray

public static Table[] readTableArray(com.google.gson.JsonObject modelJson,
                                     java.lang.String tablePath)

Extracts a Table array from H2O's model serialized into JSON.

Parameters:

modelJson - Full JSON representation of a model

tablePath - Path in the given JSON to the desired table array. Levels are dot-separated.

Returns:

An instance of Table [], if there was a table array found by following the given path. Otherwise null.

readTable

public static Table readTable(com.google.gson.JsonObject modelJson,
                              java.lang.String tablePath)

Extracts a Table from H2O's model serialized into JSON.

Parameters:

modelJson - Full JSON representation of a model

tablePath - Path in the given JSON to the desired table. Levels are dot-separated.

Returns:

An instance of Table, if there was a table found by following the given path. Otherwise null.

fillObjects

public static <T> void fillObjects(java.util.List<T> objects,
                                   com.google.gson.JsonArray from)

fillObject

public static void fillObject(java.lang.Object object,
                              com.google.gson.JsonElement from,
                              java.lang.String elementPath)

findInJson

protected static com.google.gson.JsonElement findInJson(com.google.gson.JsonElement jsonElement,
                                                        java.lang.String jsonPath)

Finds an element in GSON's JSON document representation

Parameters:

jsonElement - A (potentially complex) element to search in

jsonPath - Path in the given JSON to the desired table. Levels are dot-separated. E.g. 'model._output.variable_importances'.

Returns:

JsonElement, if found. Otherwise JsonNull.

elementExists

public static boolean elementExists(com.google.gson.JsonElement jsonElement,
                                    java.lang.String jsonPath)

Parameters:

jsonElement - A (potentially complex) element to search in

jsonPath - Path in the given JSON to the desired table. Levels are dot-separated. E.g. 'model._output.variable_importances'.

Returns:

True if the element exists under the given path in the target JSON, otherwise false