AbstractScalarEncoder (Dataflow Library Distribution Project 8.2.0-176 API)

java.lang.Object
- com.pervasive.datarush.encoding.binary.AbstractTokenEncoder
- - com.pervasive.datarush.encoding.binary.AbstractScalarEncoder

All Implemented Interfaces:

TokenEncoder
```
public abstract class AbstractScalarEncoder
extends AbstractTokenEncoder
```
Base class for scalar encoders. Handles uniform encoding of null values.

Constructor Summary

Constructors
Modifier Constructor Description

protected AbstractScalarEncoder()
Initializes a new encoder.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`encode(BinaryBuilder buffer)`	This implementation invokes `encodeScalar(BinaryBuilder)` in the event that the source is non-null.
`void`	`encodeField(BinaryBuilder buffer, int index)`	This implementation delegates to `TokenEncoder.encode(BinaryBuilder)`.
`protected abstract void`	`encodeScalar(BinaryBuilder buffer)`	Subclasses must override this method to handle the encoding of the value.

Methods inherited from class com.pervasive.datarush.encoding.binary.AbstractTokenEncoder
doSourceUpdated, getSource, setSource

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

- Constructor Detail
  - AbstractScalarEncoder
```
protected AbstractScalarEncoder()
```
    Initializes a new encoder.
- Method Detail
  - encode
```
public final void encode(BinaryBuilder buffer)
```
    This implementation invokes encodeScalar(BinaryBuilder) in the event that the source is non-null.
    
    Parameters:
    
    buffer - the buffer to which to append the encoding
  - encodeField
```
public void encodeField(BinaryBuilder buffer,
                        int index)
```
    Description copied from class: AbstractTokenEncoder
    
    This implementation delegates to TokenEncoder.encode(BinaryBuilder). Implementations that require field-specific handling should override this method instead.
    
    Specified by:
    
    encodeField in interface TokenEncoder
    
    Overrides:
    
    encodeField in class AbstractTokenEncoder
    
    Parameters:
    
    buffer - the buffer to which to append the encoding
    
    index - the index of the field to encode
  - encodeScalar
```
protected abstract void encodeScalar(BinaryBuilder buffer)
```
    Subclasses must override this method to handle the encoding of the value. This method is guaranteed to only be invoked if non-null.
    
    Parameters:
    
    buffer - The buffer to encode into.