Level

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pentaho .visual .role.Level

The Level class is String based enumeration that represents a Level of Measurement, as understood by S. S. Steven.

Currently, the following levels of measurement are supported:

nominal - A qualitative measurement level. The lowest in the hierarchy of levels of measurement. A nominal visual role represents data visually preserving the distinction between different things and also, possibly, enabling easy association of different, but somehow similar, things. However, a nominal visual role represents data in a way that conveys no preferential order between the various things.

An example nominal visual role would be one that used the color hue of distinct visual marks for representing things.

Any data type can be represented by a nominal visual role.
ordinal - A qualitative measurement level. An ordinal visual role adds to the characteristics of nominal visual roles the ability to convey order to the represented things.

An example ordinal visual role would be using 5 shades of a same color hue to represent the 5 distinct values of a qualitative data property.

Any data type can be represented by an ordinal visual role, even if order needs to be attributed by some external mechanism (natural/source order, alphabetic, order by other property, explicit given order of values).
quantitative - Aggregates the interval and ratio levels of measurement, the highest in the hierarchy of levels of measurement. A quantitative visual role adds to the characteristics of ordinal visual roles the ability to visually represent the proportion between quantities (ratios), or, at least, the proportion between differences of quantities (intervals).

Only the pentaho.type.Number and pentaho.type.Date data types can be (directly) represented by a quantitative visual role.

AMD Module

require(["pentaho/visual/role/level"], function(Level) { /* code goes here */ });

Extends

Constructor

Name	Description
new Level()

Classes

Name	Summary
Type	The type class of `pentaho.visual.role.Level`.

Members

Name	Description
$isValid : `boolean`	Determines if this value is a valid instance of its type.
$key : `string`	Gets the key of the simple value.
$type : `pentaho.type.Value.Type`	Gets the type of this instance.
configure	Configures this value with a given configuration.
formatted : `string`	Gets or sets the formatted value of the property.
value : `string`	Gets the underlying string primitive value of the value.

Methods

Name	Description
_configure(config) Protected	Configures this value with a given non-nully configuration.
_toJSONValue(keyArgs) : `UJsonValue` Protected	Converts the `value` of the simple instance to a JSON-compatible representation.
assertValid()	Ensures that the value is valid, and throws the first validation error if it is not.
clone() : `pentaho.type.Simple`	Creates a clone of the simple value.
equals(other) : `boolean`	Determines if a given value, of the same type, represents the same entity.
equalsContent(other) : `boolean`	Determines if a given value, of the same type, represents the same entity with the same content.
toJSON() : `UJsonValue`	Creates a top-level JSON specification that describes this instance.
toSpec(keyArgs) : `pentaho.type.spec.UInstance`	Creates a specification that describes this value.
toSpecInContext(keyArgs) : `any`	Creates a specification that describes this instance.
toString() : `String`	Returns a string that represents the current simple value.
validate() : `Array.<pentaho.type.ValidationError>`	Determines if this value is a valid instance of its type.
valueOf() : `*`	Gets the underlying primitive value of the simple value.

Constructor Details

new Level()
Source: javascript/web/pentaho/visual/role/level.js, line 43

Members Details

$isValid: `boolean`
Determines if this value is a valid instance of its type. This attribute calls `validate` and returns a boolean value indicating if it returned no errors. Source: javascript/web/pentaho/type/value.js, line 123 Inherited From: pentaho.type.Value#$isValid

$isValid: boolean

Determines if this value is a valid instance of its type.

This attribute calls validate and returns a boolean value indicating if it returned no errors.

Source: javascript/web/pentaho/type/value.js, line 123

Inherited From: pentaho.type.Value#$isValid

$key: `string`
Gets the key of the simple value. The key of a value identifies it among values of the same concrete type. If two values have the same concrete type and their keys are equal, then it must also be the case that `pentaho.type.Value.Type#areEqual` returns `true` when given the two values. The opposite should be true as well. If two values of the same concrete type have distinct keys, then `pentaho.type.Value.Type#areEqual` should return `false`. The default simple value implementation, returns the result of calling `toString()` on `pentaho.type.Simple#value`. Source: javascript/web/pentaho/type/simple.js, line 198 Inherited From: pentaho.type.Simple#$key

$key: string

Gets the key of the simple value.

The key of a value identifies it among values of the same concrete type.

If two values have the same concrete type and their keys are equal, then it must also be the case that pentaho.type.Value.Type#areEqual returns true when given the two values. The opposite should be true as well. If two values of the same concrete type have distinct keys, then pentaho.type.Value.Type#areEqual should return false.

The default simple value implementation, returns the result of calling toString() on pentaho.type.Simple#value.

Source: javascript/web/pentaho/type/simple.js, line 198

Inherited From: pentaho.type.Simple#$key

$type: `pentaho.type.Value.Type`
Gets the type of this instance. Source: javascript/web/pentaho/type/value.js, line 246 Overrides: pentaho.type.mixins.DiscreteDomain#$type

$type: pentaho.type.Value.Type

Gets the type of this instance.

Source: javascript/web/pentaho/type/value.js, line 246

Overrides: pentaho.type.mixins.DiscreteDomain#$type

configure:
Configures this value with a given configuration. If `config` is `Nully`, it is ignored. If `config` is a plain object, its properties, `v`, `f`, `value` and `formatted` are set on this simple's corresponding properties. It is an error if the properties `v` or `value` contain a primitive value which is different from of this simple. If `config` is another simple value, it can be of any simple type. However, its primitive value must be the same as that of this simple. If the formatted value of `config` is not `Nully`, it updates this simple's formatted value. An error is thrown if `config` is of another type. Source: javascript/web/pentaho/type/simple.js, line 224 Inherited From: pentaho.type.Simple#configure

configure:

Configures this value with a given configuration.

If config is Nully, it is ignored.

If config is a plain object, its properties, v, f, value and formatted are set on this simple's corresponding properties. It is an error if the properties v or value contain a primitive value which is different from of this simple.

If config is another simple value, it can be of any simple type. However, its primitive value must be the same as that of this simple. If the formatted value of config is not Nully, it updates this simple's formatted value.

An error is thrown if config is of another type.

Source: javascript/web/pentaho/type/simple.js, line 224

Inherited From: pentaho.type.Simple#configure

formatted: `string`
Gets or sets the formatted value of the property. Source: javascript/web/pentaho/type/simple.js, line 141 Inherited From: pentaho.type.Simple#formatted

formatted: string

Gets or sets the formatted value of the property.

Source: javascript/web/pentaho/type/simple.js, line 141

Inherited From: pentaho.type.Simple#formatted

value: `string`
Gets the underlying string primitive value of the value. Source: javascript/web/pentaho/type/string.js, line 35 Inherited From: pentaho.type.String#value

value: string

Gets the underlying string primitive value of the value.

Source: javascript/web/pentaho/type/string.js, line 35

Inherited From: pentaho.type.String#value

Methods Details

_configure(config)

Protected

Configures this value with a given non-nully configuration.

The default implementation does nothing.

Source: javascript/web/pentaho/type/value.js, line 178

Inherited From: pentaho.type.Value#_configure

Parameters:
Name	Default Value	Summary
config : `any`		The configuration.

_toJSONValue(keyArgs) : UJsonValue

Protected

Converts the value of the simple instance to a JSON-compatible representation.

The default implementation returns value itself. Override to implement a custom JSON format for this simple value type.

Source: javascript/web/pentaho/type/simple.js, line 361

Inherited From: pentaho.type.Simple#_toJSONValue

Parameters:
Name	Default Value	Summary
keyArgs : `Object`		The keyword arguments object. Please see the documentation of subclasses for information on additional, supported keyword arguments.

Returns:
Name	Description
`UJsonValue`	A JSON-compatible representation of value.

assertValid()

Ensures that the value is valid, and throws the first validation error if it is not.

This method calls the validate method.

Source: javascript/web/pentaho/type/value.js, line 152

Inherited From: pentaho.type.Value#assertValid

Throws:
Name	Description
`pentaho.type.ValidationError`	When the value is not valid, the first error returned by the `validate` method.

clone() : pentaho.type.Simple

Creates a clone of the simple value.

Source: javascript/web/pentaho/type/simple.js, line 89

Inherited From: pentaho.type.Simple#clone

Returns:
Name	Description
`pentaho.type.Simple`	The simple value clone.

equals(other) : boolean

Determines if a given value, of the same type, represents the same entity.

The default implementation delegates the operation to the _isEqual method.

Source: javascript/web/pentaho/type/value.js, line 107

Inherited From: pentaho.type.Value#equals

Parameters:
Name	Default Value	Summary
other : `any`		A value to test for equality.

Returns:
Name	Description
`boolean`	`true` if the given value is equal to this one; or, `false`, otherwise.

equalsContent(other) : boolean

Determines if a given value, of the same type, represents the same entity with the same content.

The given value must be of the same concrete type (or the result is undefined).

If two values are equal, they must have an equal key, value, formatted value.

Source: javascript/web/pentaho/type/simple.js, line 213

Inherited From: pentaho.type.Simple#equalsContent

Parameters:
Name	Default Value	Summary
other : `pentaho.type.Simple`		A simple value to test for equality.

Returns:
Name	Description
`boolean`	`true` if the given simple value is equal to this one; `false`, otherwise.

toJSON() : UJsonValue

Creates a top-level JSON specification that describes this instance.

Attributes which do not have a JSON-compatible specification are omitted. Specifically, for inline types, attributes with a function value are not supported.

This method simply calls pentaho.type.Instance#toSpec with argument keyArgs.isJson as true and exists for seamless integration with JavaScript's JSON.stringify method.

Source: javascript/web/pentaho/type/instance.js, line 210

Overrides: pentaho.type.mixins.DiscreteDomain#toJSON

Returns:
Name	Description
`UJsonValue`	A JSON-compatible specification.

See also: pentaho.type.Instance#toSpec

Implements:

pentaho.lang.ISpecifiable#toSpec

toSpec(keyArgs) : `pentaho.type.spec.UInstance`
Creates a specification that describes this value. If an `ambient specification context`, currently exists, it is used to manage the serialization process. Otherwise, one is created and set as current. Then, the actual work is delegated to `pentaho.type.Instance#toSpecInContext`. Source: javascript/web/pentaho/type/value.js, line 184 Overrides: pentaho.type.mixins.DiscreteDomain#toSpec

toSpec(keyArgs) : pentaho.type.spec.UInstance

Creates a specification that describes this value.

If an ambient specification context, currently exists, it is used to manage the serialization process. Otherwise, one is created and set as current. Then, the actual work is delegated to pentaho.type.Instance#toSpecInContext.

Source: javascript/web/pentaho/type/value.js, line 184

Overrides: pentaho.type.mixins.DiscreteDomain#toSpec

Name Default Value Summary

keyArgs : Object

Optional

The keyword arguments object. Passed to every value and type serialized within this scope.

Please see the documentation of value subclasses for information on additional, supported keyword arguments.

Parameters:
Name	Default Value	Summary
isJson : `boolean` Optional	false	Generates a JSON-compatible specification. Attributes which do not have a JSON-compatible specification are omitted.
declaredType : `pentaho.type.Type` Optional		The base type of this value's storage location. If the value does not have this exact type, its inline type property must be included in the specification. Otherwise, it can be omitted. When unspecified, the inline type property is only included if `forceType` is `true`.
forceType : `boolean` Optional	false	Forces inclusion of the inline type property, `_`, in the specification.
omitFormatted : `boolean` Optional	false	Omits the formatted value on `Simple` values' specifications.
preferPropertyArray : `boolean` Optional	false	Indicates that, if possible, array form is used for `Complex` values' specifications. The array form of a complex value cannot be used when its type must be inlined.
includeDefaults : `boolean` Optional	false	When `true`, all of the properties of `Complex` values are serialized. When `false`, the default, only properties whose value is different from their default value are serialized. Only applies to complex values that are serialized in object form. In array form, all of the properties of complex values are serialized independently of their value.
omitProps : `Object` Optional		An object whose own property names with a truthy value are the names of the properties of the current complex type to omit from the serialization. Only applies when a complex is output in object form. In array form, all properties are output whatever their value. This argument only applies to complex values and is not passed through to the values of their properties.

Returns:
Name	Description
`pentaho.type.spec.UInstance`	A specification of this value.

toSpecInContext(keyArgs) : any

Creates a specification that describes this instance.

Source: javascript/web/pentaho/type/instance.js, line 190

Overrides: pentaho.type.mixins.DiscreteDomain#toSpecInContext

Parameters:
Name	Default Value	Summary
keyArgs : `Object` Optional		The keyword arguments' object. Passed to every instance and type serialized within this scope. Please see the documentation of subclasses for information on additional, supported keyword arguments.