diff options
| -rw-r--r-- | sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Expression.scala | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Expression.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Expression.scala index 7dacdafb71..c26faee2f4 100644 --- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Expression.scala +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Expression.scala @@ -45,6 +45,7 @@ import org.apache.spark.sql.types._ * - [[LeafExpression]]: an expression that has no child. * - [[UnaryExpression]]: an expression that has one child. * - [[BinaryExpression]]: an expression that has two children. + * - [[TernaryExpression]]: an expression that has three children. * - [[BinaryOperator]]: a special case of [[BinaryExpression]] that requires two children to have * the same output data type. * @@ -531,7 +532,7 @@ abstract class TernaryExpression extends Expression { * of evaluation process, we should override [[eval]]. */ protected def nullSafeEval(input1: Any, input2: Any, input3: Any): Any = - sys.error(s"BinaryExpressions must override either eval or nullSafeEval") + sys.error(s"TernaryExpressions must override either eval or nullSafeEval") /** * Short hand for generating ternary evaluation code. |