JSONInstances (interruptible-weka 0.1.4 API)

java.lang.Object
- weka.core.json.JSONInstances

```
public class JSONInstances
extends java.lang.Object
```
Class for transforming Instances objects into JSON objects and vice versa. Missing values get stored as "?".

See Also:

MISSING_VALUE

Field Summary

Fields
Modifier and Type	Field and Description
`static java.lang.String`	`ATTRIBUTES` the attributes object.
`static java.lang.String`	`CLASS` the class attribute indicator.
`static java.lang.String`	`DATA` the data section.
`static java.lang.String`	`DATEFORMAT` the dateformat attribute.
`static java.lang.String`	`HEADER` the header section.
`static java.lang.String`	`LABELS` the labels attribute.
`static java.lang.String`	`MISSING_VALUE` the missing value indicator.
`static java.lang.String`	`NAME` the name attribute.
`static java.lang.String`	`RELATION` the relation name.
`static java.lang.String`	`SPARSE` the sparse attribute.
`static java.lang.String`	`SPARSE_SEPARATOR` the separator for index/value in case of sparse instances.
`static java.lang.String`	`TYPE` the type attribute.
`static java.lang.String`	`VALUES` the values attribute.
`static java.lang.String`	`WEIGHT` the weight attribute.

Constructor Summary

Constructors
Constructor and Description

JSONInstances()

Constructors
Constructor and Description
`JSONInstances()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static void`	`main(java.lang.String[] args)` For testing only.
`protected static Attribute`	`toAttribute(JSONNode att, boolean[] classAtt)` Turns the JSON object into an Attribute, if possible.
`static Instances`	`toHeader(JSONNode json)` Turns a JSON object, if possible, into an Instances object (only header).
`protected static Instance`	`toInstance(JSONNode inst, Instances data)` Turns the JSON Object into an Instance, if possible.
`static Instances`	`toInstances(JSONNode json)` Turns a JSON object, if possible, into an Instances object.
`protected static Instances`	`toInstances(JSONNode json, boolean onlyHeader)` Turns a JSON object, if possible, into an Instances object.
`protected static JSONNode`	`toJSON(Instance inst)` Turns the Instance into a JSON object.
`static JSONNode`	`toJSON(Instances inst)` Turns the Instances object into a JSON object.
`protected static JSONNode`	`toJSON(Instances inst, Attribute att)` Turns the Attribute into a JSON object.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - HEADER
```
public static final java.lang.String HEADER
```
    the header section.
    
    See Also:
    
    Constant Field Values
  - DATA
```
public static final java.lang.String DATA
```
    the data section.
    
    See Also:
    
    Constant Field Values
  - RELATION
```
public static final java.lang.String RELATION
```
    the relation name.
    
    See Also:
    
    Constant Field Values
  - ATTRIBUTES
```
public static final java.lang.String ATTRIBUTES
```
    the attributes object.
    
    See Also:
    
    Constant Field Values
  - NAME
```
public static final java.lang.String NAME
```
    the name attribute.
    
    See Also:
    
    Constant Field Values
  - TYPE
```
public static final java.lang.String TYPE
```
    the type attribute.
    
    See Also:
    
    Constant Field Values
  - CLASS
```
public static final java.lang.String CLASS
```
    the class attribute indicator.
    
    See Also:
    
    Constant Field Values
  - LABELS
```
public static final java.lang.String LABELS
```
    the labels attribute.
    
    See Also:
    
    Constant Field Values
  - WEIGHT
```
public static final java.lang.String WEIGHT
```
    the weight attribute.
    
    See Also:
    
    Constant Field Values
  - DATEFORMAT
```
public static final java.lang.String DATEFORMAT
```
    the dateformat attribute.
    
    See Also:
    
    Constant Field Values
  - SPARSE
```
public static final java.lang.String SPARSE
```
    the sparse attribute.
    
    See Also:
    
    Constant Field Values
  - VALUES
```
public static final java.lang.String VALUES
```
    the values attribute.
    
    See Also:
    
    Constant Field Values
  - SPARSE_SEPARATOR
```
public static final java.lang.String SPARSE_SEPARATOR
```
    the separator for index/value in case of sparse instances.
    
    See Also:
    
    Constant Field Values
  - MISSING_VALUE
```
public static final java.lang.String MISSING_VALUE
```
    the missing value indicator.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - JSONInstances
```
public JSONInstances()
```
- Method Detail
  - toAttribute
```
protected static Attribute toAttribute(JSONNode att,
                                       boolean[] classAtt)
```
    Turns the JSON object into an Attribute, if possible.
    
    Parameters:
    
    att - the JSON object to turn into an Attribute
    
    classAtt - for storing whether the attribute is the class attribute
    
    Returns:
    
    the Attribute, null in case of an error
  - toInstance
```
protected static Instance toInstance(JSONNode inst,
                                     Instances data)
```
    Turns the JSON Object into an Instance, if possible.
    
    Parameters:
    
    inst - the JSON object to turn into an Instance
    
    data - the data so far (only used for header information)
    
    Returns:
    
    the Instance, null in case of an error
  - toInstances
```
protected static Instances toInstances(JSONNode json,
                                       boolean onlyHeader)
```
    Turns a JSON object, if possible, into an Instances object.
    
    Parameters:
    
    json - the JSON object to convert
    
    onlyHeader - whether to retrieve only the header
    
    Returns:
    
    the generated Instances object, null if not possible
  - toInstances
```
public static Instances toInstances(JSONNode json)
```
    Turns a JSON object, if possible, into an Instances object.
    
    Parameters:
    
    json - the JSON object to convert
    
    Returns:
    
    the generated Instances object, null if not possible
  - toHeader
```
public static Instances toHeader(JSONNode json)
```
    Turns a JSON object, if possible, into an Instances object (only header).
    
    Parameters:
    
    json - the JSON object to convert
    
    Returns:
    
    the generated Instances header object, null if not possible
  - toJSON
```
protected static JSONNode toJSON(Instances inst,
                                 Attribute att)
```
    Turns the Attribute into a JSON object.
    
    Parameters:
    
    inst - the corresponding dataset
    
    att - the attribute to convert
    
    Returns:
    
    the JSON object
  - toJSON
```
protected static JSONNode toJSON(Instance inst)
```
    Turns the Instance into a JSON object.
    
    Parameters:
    
    inst - the Instance to convert
    
    Returns:
    
    the JSON object
  - toJSON
```
public static JSONNode toJSON(Instances inst)
```
    Turns the Instances object into a JSON object.
    
    Parameters:
    
    inst - the Instances to turn into a JSON object
    
    Returns:
    
    the JSON object
  - main
```
public static void main(java.lang.String[] args)
                 throws java.lang.Exception
```
    For testing only.
    
    Parameters:
    
    args - expects a dataset as first parameter
    
    Throws:
    
    java.lang.Exception - if something goes wrong

Class JSONInstances

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

HEADER

DATA

RELATION

ATTRIBUTES

NAME

TYPE

CLASS

LABELS

WEIGHT

DATEFORMAT

SPARSE

VALUES

SPARSE_SEPARATOR

MISSING_VALUE

Constructor Detail

JSONInstances

Method Detail

toAttribute

toInstance

toInstances

toInstances

toHeader

toJSON

toJSON

toJSON

main