WbLanguageVariable (OpenRefine 4.0-SNAPSHOT API)

java.lang.Object
- org.openrefine.wikibase.schema.WbVariableExpr<String>
- - org.openrefine.wikibase.schema.WbLanguageVariable

All Implemented Interfaces:

WbExpression<String>
```
public class WbLanguageVariable
extends WbVariableExpr<String>
```
A language variable generates a language code from a cell. It checks its values against a known list of valid language codes and fixes on the fly the deprecated ones (see WbLanguageConstant).

Field Summary
- Fields inherited from class org.openrefine.wikibase.schema.WbVariableExpr
  NO_VALUE_KEYWORD, SOME_VALUE_KEYWORD

Constructor Summary

Constructors
Constructor Description

WbLanguageVariable()

WbLanguageVariable(String columnName)
Constructs a variable and sets the column it is bound to.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(Object other)`
`String`	`fromCell(Cell cell, ExpressionContext ctxt)`	Method that should be implemented by subclasses, converting an OpenRefine cell to a Wikibase value.

Methods inherited from class org.openrefine.wikibase.schema.WbVariableExpr
equalAsVariables, evaluate, getColumnName, hashCode, setColumnName, validate

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

- Constructor Detail
  - WbLanguageVariable
```
public WbLanguageVariable()
```
  - WbLanguageVariable
```
public WbLanguageVariable(String columnName)
```
    Constructs a variable and sets the column it is bound to. Mostly used as a convenience method for testing.
    
    Parameters:
    
    columnName - the name of the column the expression should draw its value from
- Method Detail
  - fromCell
```
public String fromCell(Cell cell,
                       ExpressionContext ctxt)
                throws SkipSchemaExpressionException
```
    Description copied from class: WbVariableExpr
    
    Method that should be implemented by subclasses, converting an OpenRefine cell to a Wikibase value. Access to other values and emitting warnings is possible via the supplied EvaluationContext object.
    
    Specified by:
    
    fromCell in class WbVariableExpr<String>
    
    Parameters:
    
    cell - the cell to convert
    
    ctxt - the evaluation context
    
    Returns:
    
    the corresponding Wikibase value
    
    Throws:
    
    SkipSchemaExpressionException
  - equals
```
public boolean equals(Object other)
```
    Overrides:
    
    equals in class Object