ColumnDefiner (celesta-parent 8.1.0 API)

java.lang.Object
- ru.curs.celesta.dbutils.adaptors.column.ColumnDefiner

Direct Known Subclasses:

FireBirdColumnDefiner, MsSqlColumnDefiner, OraColumnDefiner
```
public abstract class ColumnDefiner
extends Object
```
Class responsible for generation of table column definition in different DBMS.

Constructor Summary

Constructors
Constructor Description

ColumnDefiner()

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract String`	`dbFieldType()`	Returns column field type, e.g.
`abstract String`	`getDefaultDefinition(Column<?> c)`	Returns separately DEFAULT definition of the column.
`String`	`getFullDefinition(Column<?> c)`	Returns full definition of the column (for column creation).
`abstract String`	`getMainDefinition(Column<?> c)`	Returns column definition that contains name, type and NULL/NOT NULL ( without DEFAULT).
`static String`	`join(String... ss)`	Concatenates strings separated by a space symbol.
`String`	`nullable(Column<?> c)`	Whether the column is nullable.

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

- Constructor Detail
  - ColumnDefiner
```
public ColumnDefiner()
```
- Method Detail
  - dbFieldType
```
public abstract String dbFieldType()
```
    Returns column field type, e.g. "boolean", "double","int" etc. depending on the DBMS in question.
  - getMainDefinition
```
public abstract String getMainDefinition(Column<?> c)
```
    Returns column definition that contains name, type and NULL/NOT NULL ( without DEFAULT). It is needed for the column change mechanism.
    
    Parameters:
    
    c - column.
  - getDefaultDefinition
```
public abstract String getDefaultDefinition(Column<?> c)
```
    Returns separately DEFAULT definition of the column.
    
    Parameters:
    
    c - column.
  - getFullDefinition
```
public String getFullDefinition(Column<?> c)
```
    Returns full definition of the column (for column creation).
    
    Parameters:
    
    c - column.
  - nullable
```
public String nullable(Column<?> c)
```
    Whether the column is nullable.
    
    Parameters:
    
    c - column.
    
    Returns:
    
    "null" | "not null"
  - join
```
public static String join(String... ss)
```
    Concatenates strings separated by a space symbol.
    
    Parameters:
    
    ss - strings array for concatenation in form of a free parameter.