org.apache.mahout.math.drm.logical.OpTimesRightMatrix.scala Maven / Gradle / Ivy
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* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
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package org.apache.mahout.math.drm.logical
import org.apache.mahout.math.Matrix
import org.apache.mahout.math.scalabindings._
import RLikeOps._
import org.apache.mahout.math.drm.DrmLike
/** Logical times-right over in-core matrix operand. */
case class OpTimesRightMatrix[K](
override var A: DrmLike[K],
val right: Matrix
) extends AbstractUnaryOp[K, K] {
override protected[mahout] lazy val partitioningTag: Long = A.partitioningTag
assert(A.ncol == right.nrow, "Incompatible operand geometry")
/**
* Explicit extraction of key class Tag since traits don't support context bound access; but actual
* implementation knows it
*/
override lazy val keyClassTag = A.keyClassTag
/** R-like syntax for number of rows. */
def nrow: Long = A.nrow
/** R-like syntax for number of columns */
def ncol: Int = right.ncol
/** Non-zero element count */
// TODO
def nNonZero: Long = throw new UnsupportedOperationException
}