Fetch (hibernate-jdk11 5.4.12.Final API)

所有已知子接口:

AnyAttributeFetch, AttributeFetch, CollectionAttributeFetch, CompositeAttributeFetch, CompositeFetch, EntityFetch

所有已知实现类:

AbstractCompositeEntityIdentifierDescription, AbstractCompositeFetch, AnyAttributeFetchImpl, CollectionAttributeFetchImpl, CompositeAttributeFetchImpl, EncapsulatedEntityIdentifierDescription, EntityAttributeFetchImpl, NestedCompositeAttributeFetchImpl, NonEncapsulatedEntityIdentifierDescription
```
public interface Fetch
```
Contract for associations that are being fetched.
NOTE : can represent components/embeddables

作者:

Steve Ebersole

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`	`getAdditionalJoinConditions()`
`Type`	`getFetchedType()`	Get the Hibernate Type that describes the fetched attribute
`FetchStrategy`	`getFetchStrategy()`	Gets the fetch strategy for this fetch.
`PropertyPath`	`getPropertyPath()`	Get the property path to this fetch
`FetchSource`	`getSource()`	Obtain the owner of this fetch.
`boolean`	`isNullable()`	Is this fetch nullable?
`String[]`	`toSqlSelectFragments(String alias)`	Generates the SQL select fragments for this fetch.

- 方法详细资料
  - getSource
```
FetchSource getSource()
```
    Obtain the owner of this fetch.
    
    返回:
    
    The fetch owner.
  - getPropertyPath
```
PropertyPath getPropertyPath()
```
    Get the property path to this fetch
    
    返回:
    
    The property path
  - getFetchStrategy
```
FetchStrategy getFetchStrategy()
```
    Gets the fetch strategy for this fetch.
    
    返回:
    
    the fetch strategy for this fetch.
  - getFetchedType
```
Type getFetchedType()
```
    Get the Hibernate Type that describes the fetched attribute
    
    返回:
    
    The Type of the fetched attribute
  - isNullable
```
boolean isNullable()
```
    Is this fetch nullable?
    
    返回:
    
    true, if this fetch is nullable; false, otherwise.
  - getAdditionalJoinConditions
```
String getAdditionalJoinConditions()
```
  - toSqlSelectFragments
```
String[] toSqlSelectFragments(String alias)
```
    Generates the SQL select fragments for this fetch. A select fragment is the column and formula references.
    
    返回:
    
    the select fragments