RenameColumnsTransform

java.lang.Object
- org.datavec.api.transform.transform.column.RenameColumnsTransform

All Implemented Interfaces:

java.io.Serializable, ColumnOp, Transform
```
public class RenameColumnsTransform
extends java.lang.Object
implements Transform, ColumnOp
```
Rename one or more columns

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor and Description
`RenameColumnsTransform(java.util.List<java.lang.String> oldNames, java.util.List<java.lang.String> newNames)`
`RenameColumnsTransform(java.lang.String oldName, java.lang.String newName)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`java.lang.String`	`columnName()` Returns a singular column name this op is meant to run on
`java.lang.String[]`	`columnNames()` Returns column names this op is meant to run on
`boolean`	`equals(java.lang.Object o)`
`Schema`	`getInputSchema()` Getter for input schema
`int`	`hashCode()`
`java.util.List<Writable>`	`map(java.util.List<Writable> writables)` Transform a writable in to another writable
`java.lang.Object`	`map(java.lang.Object input)` Transform an object in to another object
`java.util.List<java.util.List<Writable>>`	`mapSequence(java.util.List<java.util.List<Writable>> sequence)` Transform a sequence
`java.lang.Object`	`mapSequence(java.lang.Object sequence)` Transform a sequence
`java.lang.String`	`outputColumnName()` The output column name after the operation has been applied
`java.lang.String[]`	`outputColumnNames()` The output column names This will often be the same as the input
`void`	`setInputSchema(Schema inputSchema)` Set the input schema.
`java.lang.String`	`toString()`
`Schema`	`transform(Schema inputSchema)` Get the output schema for this transformation, given an input schema

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - RenameColumnsTransform
```
public RenameColumnsTransform(java.lang.String oldName,
                              java.lang.String newName)
```
  - RenameColumnsTransform
```
public RenameColumnsTransform(java.util.List<java.lang.String> oldNames,
                              java.util.List<java.lang.String> newNames)
```
- Method Detail
  - equals
```
public boolean equals(java.lang.Object o)
```
    Overrides:
    
    equals in class java.lang.Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object
  - transform
```
public Schema transform(Schema inputSchema)
```
    Description copied from interface: ColumnOp
    
    Get the output schema for this transformation, given an input schema
    
    Specified by:
    
    transform in interface ColumnOp
  - setInputSchema
```
public void setInputSchema(Schema inputSchema)
```
    Description copied from interface: ColumnOp
    
    Set the input schema.
    
    Specified by:
    
    setInputSchema in interface ColumnOp
  - getInputSchema
```
public Schema getInputSchema()
```
    Description copied from interface: ColumnOp
    
    Getter for input schema
    
    Specified by:
    
    getInputSchema in interface ColumnOp
    
    Returns:
  - map
```
public java.util.List<Writable> map(java.util.List<Writable> writables)
```
    Description copied from interface: Transform
    
    Transform a writable in to another writable
    
    Specified by:
    
    map in interface Transform
    
    Parameters:
    
    writables - the record to transform
    
    Returns:
    
    the transformed writable
  - mapSequence
```
public java.util.List<java.util.List<Writable>> mapSequence(java.util.List<java.util.List<Writable>> sequence)
```
    Description copied from interface: Transform
    
    Transform a sequence
    
    Specified by:
    
    mapSequence in interface Transform
  - map
```
public java.lang.Object map(java.lang.Object input)
```
    Transform an object in to another object
    
    Specified by:
    
    map in interface Transform
    
    Parameters:
    
    input - the record to transform
    
    Returns:
    
    the transformed writable
  - mapSequence
```
public java.lang.Object mapSequence(java.lang.Object sequence)
```
    Transform a sequence
    
    Specified by:
    
    mapSequence in interface Transform
    
    Parameters:
    
    sequence -
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - outputColumnName
```
public java.lang.String outputColumnName()
```
    The output column name after the operation has been applied
    
    Specified by:
    
    outputColumnName in interface ColumnOp
    
    Returns:
    
    the output column name
  - outputColumnNames
```
public java.lang.String[] outputColumnNames()
```
    The output column names This will often be the same as the input
    
    Specified by:
    
    outputColumnNames in interface ColumnOp
    
    Returns:
    
    the output column names
  - columnNames
```
public java.lang.String[] columnNames()
```
    Returns column names this op is meant to run on
    
    Specified by:
    
    columnNames in interface ColumnOp
    
    Returns:
  - columnName
```
public java.lang.String columnName()
```
    Returns a singular column name this op is meant to run on
    
    Specified by:
    
    columnName in interface ColumnOp
    
    Returns:

Class RenameColumnsTransform

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

RenameColumnsTransform

RenameColumnsTransform

Method Detail

equals

hashCode

transform

setInputSchema

getInputSchema

map

mapSequence

map

mapSequence

toString

outputColumnName

outputColumnNames

columnNames

columnName