water.rapids.ast.prims.reducers

Class AstNaRollupOp

java.lang.Object

water.Iced<T>

water.rapids.ast.AstRoot<T>

water.rapids.ast.AstPrimitive

water.rapids.ast.prims.reducers.AstReducerOp

water.rapids.ast.prims.reducers.AstRollupOp

water.rapids.ast.prims.reducers.AstNaRollupOp

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, Freezable

Direct Known Subclasses:

AstMaxNa, AstMinNa, AstSumNa

public abstract class AstNaRollupOp
extends AstRollupOp

Optimization for the RollupStats: use them directly

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AstNaRollupOp()

Method Summary

Modifier and Type	Method and Description
ValNum	apply(Env env, Env.StackHelp stk, AstRoot[] asts) Primary method to invoke this function, passing all the parameters as the `asts` list.

Methods inherited from class water.rapids.ast.prims.reducers.AstRollupOp

args, rup

Methods inherited from class water.rapids.ast.prims.reducers.AstReducerOp

nargs, op

Methods inherited from class water.rapids.ast.AstPrimitive

description, example, exec

Methods inherited from class water.rapids.ast.AstRoot

str, toString

Methods inherited from class water.Iced

asBytes, clone, copyOver, frozenType, read, readExternal, readJSON, reloadFromBytes, toJsonBytes, toJsonString, write, writeExternal, writeJSON

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

AstNaRollupOp

public AstNaRollupOp()

Method Detail

apply

public ValNum apply(Env env,
                    Env.StackHelp stk,
                    AstRoot[] asts)

Description copied from class: AstPrimitive

Primary method to invoke this function, passing all the parameters as the `asts` list.

Overrides:

apply in class AstRollupOp

Parameters:

env - Current execution environment. Variables are looked up here.

stk - TODO need clarification

asts - List of AstRoot expressions that are arguments to the function. First element in this list is the function itself.

Returns:

value resulting from calling the function with the provided list of arguments.