ColumnUtils (feathr-impl 0.10.4-rc5 API)

java.lang.Object
- com.linkedin.feathr.common.ColumnUtils

Direct Known Subclasses:

SimpleWriteableTuple, UniversalTensorBuilder
```
public class ColumnUtils
extends java.lang.Object
```
Utility function to build internal flat array representation based on the types of the input.

Field Summary

Fields
Modifier and Type	Field and Description
`int`	`_booleanArity`
`int`	`_bytesArity`
`int[]`	`_columnIndex`
`Representable[]`	`_columnTypes`
`int`	`_doubleArity`
`int`	`_floatArity`
`int`	`_intArity`
`int`	`_longArity`
`int`	`_stringArity`

Constructor Summary

Constructors
Constructor and Description

ColumnUtils(Representable... columnTypes)

Constructors
Constructor and Description
`ColumnUtils(Representable... columnTypes)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`getBooleanArity()`
`int`	`getBytesArity()`
`int[]`	`getColumnIndex()`
`Representable[]`	`getColumnTypes()`
`static int`	`getDimArity(Representable[] types)` Compute the number of dimension (non-value) columns This assumes that all value columns are at end and are of type FLOAT or DOUBLE.
`int`	`getDoubleArity()`
`int`	`getFloatArity()`
`int`	`getIntArity()`
`int`	`getLongArity()`
`int`	`getStringArity()`

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

Field Detail

_columnIndex
```
public final int[] _columnIndex
```

_intArity
```
public int _intArity
```

_longArity
```
public int _longArity
```

_stringArity
```
public int _stringArity
```

_floatArity
```
public int _floatArity
```

_doubleArity
```
public int _doubleArity
```

_booleanArity
```
public int _booleanArity
```

_bytesArity
```
public int _bytesArity
```

_columnTypes

public final Representable[] _columnTypes

Constructor Detail

ColumnUtils

public ColumnUtils(Representable... columnTypes)

Method Detail
- getColumnIndex
```
public int[] getColumnIndex()
```
- getIntArity
```
public int getIntArity()
```
- getLongArity
```
public int getLongArity()
```
- getStringArity
```
public int getStringArity()
```
- getFloatArity
```
public int getFloatArity()
```
- getDoubleArity
```
public int getDoubleArity()
```
- getBooleanArity
```
public int getBooleanArity()
```
- getBytesArity
```
public int getBytesArity()
```
- getColumnTypes
```
public Representable[] getColumnTypes()
```
- getDimArity
```
public static int getDimArity(Representable[] types)
```
  Compute the number of dimension (non-value) columns This assumes that all value columns are at end and are of type FLOAT or DOUBLE. For other value types, assumes only one value column
  
  Parameters:
  
  types - column types
  
  Returns:
  
  number of dimension(non-value) columns. For non float/double columns, returns types.length - 1

Class ColumnUtils

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

_columnIndex

_intArity

_longArity

_stringArity

_floatArity

_doubleArity

_booleanArity

_bytesArity

_columnTypes

Constructor Detail

ColumnUtils

Method Detail

getColumnIndex

getIntArity

getLongArity

getStringArity

getFloatArity

getDoubleArity

getBooleanArity

getBytesArity

getColumnTypes

getDimArity