FieldMapping (internal-api module for cmp 6.2.2 API)

```
public interface FieldMapping
```
FieldMapping inteface is information of a column element for external user.

Author:

Shing Wai Chan

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`getColumnLength()`	This method return -1 if column length is unknown.
`String`	`getColumnName()`	This method will return the name of the column.
`int`	`getColumnType()`	This method will return int corresponding to java.sql.Types.

- Method Detail
  - getColumnType
```
int getColumnType()
```
    This method will return int corresponding to java.sql.Types.
  - getColumnName
```
String getColumnName()
```
    This method will return the name of the column.
  - getColumnLength
```
int getColumnLength()
```
    This method return -1 if column length is unknown.