Join (cdm-core 5.5.3 API)

All Known Implementing Classes:

JoinArray, JoinMuiltdimStructure, JoinParentIndex
```
public interface Join
```
An abstract way to 'join' more cols to a row

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`VariableDS`	`findVariable(String varName)`	Find the Variable of the given name in the joined table.
`Variable`	`getExtraVariable()`
`StructureData`	`getJoinData(Cursor cursor)`	Get 'join' data to be added to the row.

- Method Detail
  - getJoinData
```
StructureData getJoinData(Cursor cursor)
```
    Get 'join' data to be added to the row.
    
    Parameters:
    
    cursor - the state of the iteration
    
    Returns:
    
    extra data to be added to the row
  - findVariable
```
VariableDS findVariable(String varName)
```
    Find the Variable of the given name in the joined table.
    
    Parameters:
    
    varName - find this Variable
    
    Returns:
    
    the named Variable, or null
  - getExtraVariable
```
Variable getExtraVariable()
```