class AttributeGroup extends Serializable
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Instance Constructors
- new AttributeGroup(name: String, attrs: Array[Attribute])
Creates an attribute group with attributes.
Creates an attribute group with attributes.
- name
name of the attribute group
- attrs
array of attributes. Attributes will be copied with their corresponding indices in the array.
- new AttributeGroup(name: String, numAttributes: Int)
Creates an attribute group knowing only the number of attributes.
Creates an attribute group knowing only the number of attributes.
- name
name of the attribute group
- numAttributes
number of attributes
- new AttributeGroup(name: String)
Creates an attribute group without attribute info.
Creates an attribute group without attribute info.
- name
name of the attribute group
Value Members
- def apply(attrIndex: Int): Attribute
Gets an attribute by its index.
- def apply(attrName: String): Attribute
Gets an attribute by its name.
- val attributes: Option[Array[Attribute]]
Optional array of attributes.
Optional array of attributes. At most one of
numAttributes
andattributes
can be defined. - def equals(other: Any): Boolean
- Definition Classes
- AttributeGroup → AnyRef → Any
- def getAttr(attrIndex: Int): Attribute
Gets an attribute by its index.
- def getAttr(attrName: String): Attribute
Gets an attribute by its name.
- def hasAttr(attrName: String): Boolean
Test whether this attribute group contains a specific attribute.
- def hashCode(): Int
- Definition Classes
- AttributeGroup → AnyRef → Any
- def indexOf(attrName: String): Int
Index of an attribute specified by name.
- val name: String
- val numAttributes: Option[Int]
- def size: Int
Size of the attribute group.
Size of the attribute group. Returns -1 if the size is unknown.
- def toMetadata(): Metadata
Converts to ML metadata
- def toMetadata(existingMetadata: Metadata): Metadata
Converts to ML metadata with some existing metadata.
- def toString(): String
- Definition Classes
- AttributeGroup → AnyRef → Any
- def toStructField(): StructField
Converts to a StructField.
- def toStructField(existingMetadata: Metadata): StructField
Converts to a StructField with some existing metadata.