public class Upper extends UnaryExpression implements InputTypeSpec, scala.Product, scala.Serializable
Constructor and Description |
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Upper(Expression child) |
Modifier and Type | Method and Description |
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Expression |
child() |
scala.collection.Seq<TypeInformation<?>> |
expectedTypes()
Input type specification for each child.
|
TypeInformation<?> |
resultType()
Returns the
TypeInformation for evaluating this expression. |
org.apache.calcite.rex.RexNode |
toRexNode(org.apache.calcite.tools.RelBuilder relBuilder)
Convert Expression to its counterpart in Calcite, i.e.
|
String |
toString() |
children
checkEquals, childrenValid, valid, validateInput
fastEquals, makeCopy, postOrderTransform, preOrderVisit
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
validateInput
public Upper(Expression child)
public Expression child()
child
in class UnaryExpression
public TypeInformation<?> resultType()
Expression
TypeInformation
for evaluating this expression.
It is sometimes not available until the expression is valid.resultType
in class Expression
public scala.collection.Seq<TypeInformation<?>> expectedTypes()
InputTypeSpec
For example, Power
expecting both of the children be of Double Type should use:
def expectedTypes: Seq[TypeInformation[_} = DOUBLE_TYPE_INFO :: DOUBLE_TYPE_INFO :: Nil
expectedTypes
in interface InputTypeSpec
public org.apache.calcite.rex.RexNode toRexNode(org.apache.calcite.tools.RelBuilder relBuilder)
Expression
toRexNode
in class Expression
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