RelationalValueSourceHelper.ColumnsAndFormulasSource (hibernate-jdk11 5.4.12.Final API)

所有已知实现类:

BasicAttributeColumnsAndFormulasSource, ManyToOneAttributeColumnsAndFormulasSource, RelationalValueSourceHelper.AbstractColumnsAndFormulasSource

封闭类:

RelationalValueSourceHelper
```
public static interface RelationalValueSourceHelper.ColumnsAndFormulasSource
```
Internal unifying contract used in creating Column and Formula instances. It adapts the variances across the different mappings which contribute column/formula information. For example, consider the <property/> mapping which might have:
- a column XML attribute
- a formula XML attribute
- one or more nested <column/> XML elements
- a nested <formula/> XML element
as opposed to a <timestamp/> mapping, which can only have:
- a column XML attribute

方法概要

所有方法实例方法抽象方法
修饰符和类型	方法	说明
`String`	`getColumnAttribute()`	Access to any column defined via XML attribute.
`List`	`getColumnOrFormulaElements()`	Access to any nested `<column/>` or `<formula />` XML elements.
`String`	`getFormulaAttribute()`	Access to any formula defined via XML attribute.
`Set<String>`	`getIndexConstraintNames()`
`SizeSource`	`getSizeSource()`
`String`	`getSourceName()`	The name of the source.
`XmlElementMetadata`	`getSourceType()`	What kind of XML element does this information come from?
`Set<String>`	`getUniqueKeyConstraintNames()`
`Boolean`	`isNullable()`
`boolean`	`isUnique()`

- 方法详细资料
  - getSourceType
```
XmlElementMetadata getSourceType()
```
    What kind of XML element does this information come from?
    
    返回:
    
    The source XML element type
  - getSourceName
```
String getSourceName()
```
    The name of the source. May be null if none was specified. Will be treated as null if the nature says it cannot be named.
    
    返回:
    
    The name of the source.
    
    另请参阅:
    
    XmlElementMetadata.canBeNamed()
  - getFormulaAttribute
```
String getFormulaAttribute()
```
    Access to any formula defined via XML attribute.
    
    返回:
    
    formula, if one, as defined via XML attribute.
  - getColumnOrFormulaElements
```
List getColumnOrFormulaElements()
```
    Access to any nested <column/> or <formula /> XML elements.
    
    返回:
    
    columns or formulas defined via nested XML elements.
  - getColumnAttribute
```
String getColumnAttribute()
```
    Access to any column defined via XML attribute.
    
    返回:
    
    column, if one, as defined via XML attribute.
  - getSizeSource
```
SizeSource getSizeSource()
```
  - isNullable
```
Boolean isNullable()
```
  - isUnique
```
boolean isUnique()
```
  - getIndexConstraintNames
```
Set<String> getIndexConstraintNames()
```
  - getUniqueKeyConstraintNames
```
Set<String> getUniqueKeyConstraintNames()
```