org.apache.spark.sql.catalyst.analysis.UnresolvedAlias Scala Examples

The following examples show how to use org.apache.spark.sql.catalyst.analysis.UnresolvedAlias. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.
Example 1
Source File: AnnotationParsingUtils.scala    From HANAVora-Extensions   with Apache License 2.0 5 votes vote down vote up 
package org.apache.spark.util

import org.apache.spark.sql.catalyst.analysis.{UnresolvedAttribute, UnresolvedAlias}
import org.apache.spark.sql.catalyst.expressions._
import org.scalatest.FunSuite


trait AnnotationParsingUtils extends FunSuite {

  def assertAnnotatedAttribute(expectedAliasName:String, expectedAliasChild: Expression,
                               expectedAnnotations: Map[String, Expression],
                               actual: NamedExpression):
  Unit = {
    assert(actual.isInstanceOf[UnresolvedAlias])
    assert(actual.asInstanceOf[UnresolvedAlias].child.isInstanceOf[AnnotatedAttribute])
    val attribute = actual.asInstanceOf[UnresolvedAlias].child.asInstanceOf[AnnotatedAttribute]
    assertResult(expectedAnnotations.keySet)(attribute.annotations.keySet)
    expectedAnnotations.foreach({
      case (k, v:Literal) =>
        assert(v.semanticEquals(attribute.annotations.get(k).get))
    })
    assert(attribute.child.isInstanceOf[Alias])
    val alias = attribute.child.asInstanceOf[Alias]
    assertResult(expectedAliasName)(alias.name)
    assertResult(expectedAliasChild)(alias.child)
  }

  def assertAnnotatedProjection(expected: Seq[(String, UnresolvedAttribute, Map[String, Literal])])
                               (actual: Seq[NamedExpression]): Unit = {
    actual.zip(expected).foreach{case (exp: NamedExpression, values: (
      String, UnresolvedAttribute, Map[String, Expression])) =>
      assertAnnotatedAttribute(values._1, values._2, values._3, exp)}
  }

}