RowEvaluator.Decoder (Starjava Table API)

java.lang.Object
- uk.ac.starlink.table.formats.RowEvaluator.Decoder

Enclosing class:

RowEvaluator
```
public abstract static class RowEvaluator.Decoder
extends java.lang.Object
```
Interface for an object that can turn a string into a cell content object.

Constructor Summary

Constructors
Constructor Description

Decoder(java.lang.Class<?> clazz)
Constructor.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`ColumnInfo`	`createColumnInfo(java.lang.String name)`	Returns a new ColumnInfo suitable for the decoded values.
`abstract java.lang.Object`	`decode(java.lang.String value)`	Decodes a value.
`abstract boolean`	`isValid(java.lang.String value)`	Indicates whether this decoder is capable of decoding a given string.

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

- Constructor Detail
  - Decoder
```
public Decoder(java.lang.Class<?> clazz)
```
    Constructor.
    
    Parameters:
    
    clazz - class of object to be returned by decode method
- Method Detail
  - createColumnInfo
```
public ColumnInfo createColumnInfo(java.lang.String name)
```
    Returns a new ColumnInfo suitable for the decoded values.
    
    Parameters:
    
    name - column name
    
    Returns:
    
    new metadata object
  - decode
```
public abstract java.lang.Object decode(java.lang.String value)
```
    Decodes a value. Will complete without exception if isValid(java.lang.String) returns true for the presented value; otherwise may throw an unchecked exception.
    
    Parameters:
    
    value - string to decode
    
    Returns:
    
    typed object corresponding to value
  - isValid
```
public abstract boolean isValid(java.lang.String value)
```
    Indicates whether this decoder is capable of decoding a given string.
    
    Parameters:
    
    value - string to decode
    
    Returns:
    
    true iff this decoder can make sense of the string