water.rapids

Class ASTddply

java.lang.Object

water.Iced

water.rapids.AST

water.rapids.ASTOp

water.rapids.ASTddply

All Implemented Interfaces:

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

public class ASTddply
extends ASTOp

plyr's ddply: GroupBy by any other name. Sample AST: (h2o.ddply $frame {1;5;10} $fun) First arg is the frame we'll be working over. Second arg is column selection to group by. Third arg is the function to apply to each group.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	ASTddply.ddplyPass1
static class	ASTddply.Group

Field Summary

Fields

Modifier and Type	Field and Description
protected static long[]	_cols
protected static java.lang.String	_fun
protected static AST[]	_fun_args

Fields inherited from class water.rapids.ASTOp

BIN_INFIX_OPS, PREFIX_OPS, SYMBOLS, UDF_OPS, UNI_INFIX_OPS

Constructor Summary

Constructors

Constructor and Description
ASTddply()

Method Summary

Methods inherited from class water.rapids.ASTOp

get, isBuiltinOp, isInfixOp, isOp, isUDF, isUDF, opStrs

Methods inherited from class water.rapids.AST

indent, numChildren

Methods inherited from class water.Iced

clone, frozenType, read_impl, read, readExternal, readJSON_impl, readJSON, toJsonString, write_impl, write, writeExternal, writeHTML_impl, writeHTML, writeJSON_impl, writeJSON

Methods inherited from class java.lang.Object

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

Field Detail

_cols

protected static long[] _cols

_fun

protected static java.lang.String _fun

_fun_args

protected static AST[] _fun_args

Constructor Detail

ASTddply

public ASTddply()