java.lang.Object
- org.hibernate.jpa.QueryHints

```
public class QueryHints
extends Object
```
Defines the supported JPA query hints

作者:

Steve Ebersole

字段概要

字段
修饰符和类型	字段	说明
`static String`	`HINT_CACHE_MODE`	The hint key for specifying the cache mode (`CacheMode`) to be in effect for the execution of the hinted query.
`static String`	`HINT_CACHE_REGION`	The hint key for specifying the name of the cache region (within Hibernate's query result cache region) to use for storing the query results.
`static String`	`HINT_CACHEABLE`	The hint key for specifying whether the query results should be cached for the next (cached) execution of the "same query".
`static String`	`HINT_COMMENT`	The hint key for specifying a comment which is to be embedded into the SQL sent to the database.
`static String`	`HINT_FETCH_SIZE`	The hint key for specifying a JDBC fetch size, used when executing the resulting SQL.
`static String`	`HINT_FETCHGRAPH`	已过时。 (since 5.4) Use `GraphSemantic.FETCH`'s `GraphSemantic.getJpaHintName()` instead
`static String`	`HINT_FLUSH_MODE`	The hint key for specifying the flush mode (`FlushMode`) to be in effect for the execution of the hinted query.
`static String`	`HINT_FOLLOW_ON_LOCKING`
`static String`	`HINT_LOADGRAPH`	已过时。 (since 5.4) Use `GraphSemantic.LOAD`'s `GraphSemantic.getJpaHintName()` instead
`static String`	`HINT_NATIVE_LOCKMODE`
`static String`	`HINT_PASS_DISTINCT_THROUGH`
`static String`	`HINT_READONLY`	The hint key for specifying that objects loaded into the persistence context as a result of this query execution should be associated with the persistence context as read-only.
`static String`	`HINT_TIMEOUT`	已过时。 use `SPEC_HINT_TIMEOUT` instead
`static String`	`SPEC_HINT_TIMEOUT`	The hint key for specifying a query timeout per JPA, which defines the timeout in milliseconds

构造器概要

构造器
限定符构造器说明

protected QueryHints()

方法概要

所有方法静态方法具体方法
修饰符和类型方法说明

static Set<String> getDefinedHints()
- 从类继承的方法 java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - HINT_TIMEOUT
```
@Deprecated
public static final String HINT_TIMEOUT
```
    已过时。
    use SPEC_HINT_TIMEOUT instead
    
    The hint key for specifying a query timeout per Hibernate O/RM, which defines the timeout in seconds.
    
    另请参阅:
    
    常量字段值
  - SPEC_HINT_TIMEOUT
```
public static final String SPEC_HINT_TIMEOUT
```
    The hint key for specifying a query timeout per JPA, which defines the timeout in milliseconds
    
    另请参阅:
    
    常量字段值
  - HINT_COMMENT
```
public static final String HINT_COMMENT
```
    The hint key for specifying a comment which is to be embedded into the SQL sent to the database.
    
    另请参阅:
    
    常量字段值
  - HINT_FETCH_SIZE
```
public static final String HINT_FETCH_SIZE
```
    The hint key for specifying a JDBC fetch size, used when executing the resulting SQL.
    
    另请参阅:
    
    常量字段值
  - HINT_CACHEABLE
```
public static final String HINT_CACHEABLE
```
    The hint key for specifying whether the query results should be cached for the next (cached) execution of the "same query".
    
    另请参阅:
    
    常量字段值
  - HINT_CACHE_REGION
```
public static final String HINT_CACHE_REGION
```
    The hint key for specifying the name of the cache region (within Hibernate's query result cache region) to use for storing the query results.
    
    另请参阅:
    
    常量字段值
  - HINT_READONLY
```
public static final String HINT_READONLY
```
    The hint key for specifying that objects loaded into the persistence context as a result of this query execution should be associated with the persistence context as read-only.
    
    另请参阅:
    
    常量字段值
  - HINT_CACHE_MODE
```
public static final String HINT_CACHE_MODE
```
    The hint key for specifying the cache mode (CacheMode) to be in effect for the execution of the hinted query.
    
    另请参阅:
    
    常量字段值
  - HINT_FLUSH_MODE
```
public static final String HINT_FLUSH_MODE
```
    The hint key for specifying the flush mode (FlushMode) to be in effect for the execution of the hinted query.
    
    另请参阅:
    
    常量字段值
  - HINT_NATIVE_LOCKMODE
```
public static final String HINT_NATIVE_LOCKMODE
```
    另请参阅:
    
    常量字段值
  - HINT_FETCHGRAPH
```
@Deprecated
public static final String HINT_FETCHGRAPH
```
    已过时。
    (since 5.4) Use GraphSemantic.FETCH's GraphSemantic.getJpaHintName() instead
    
    Hint providing a "fetchgraph" EntityGraph. Attributes explicitly specified as AttributeNodes are treated as FetchType.EAGER (via join fetch or subsequent select). Note: Currently, attributes that are not specified are treated as FetchType.LAZY or FetchType.EAGER depending on the attribute's definition in metadata, rather than forcing FetchType.LAZY.
  - HINT_LOADGRAPH
```
@Deprecated
public static final String HINT_LOADGRAPH
```
    已过时。
    (since 5.4) Use GraphSemantic.LOAD's GraphSemantic.getJpaHintName() instead
    
    Hint providing a "loadgraph" EntityGraph. Attributes explicitly specified as AttributeNodes are treated as FetchType.EAGER (via join fetch or subsequent select). Attributes that are not specified are treated as FetchType.LAZY or FetchType.EAGER depending on the attribute's definition in metadata
  - HINT_FOLLOW_ON_LOCKING
```
public static final String HINT_FOLLOW_ON_LOCKING
```
    另请参阅:
    
    常量字段值
  - HINT_PASS_DISTINCT_THROUGH
```
public static final String HINT_PASS_DISTINCT_THROUGH
```
    另请参阅:
    
    常量字段值
- 构造器详细资料
  - QueryHints
```
protected QueryHints()
```
- 方法详细资料
  - getDefinedHints
```
public static Set<String> getDefinedHints()
```

类 QueryHints

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

HINT_TIMEOUT

SPEC_HINT_TIMEOUT

HINT_COMMENT

HINT_FETCH_SIZE

HINT_CACHEABLE

HINT_CACHE_REGION

HINT_READONLY

HINT_CACHE_MODE

HINT_FLUSH_MODE

HINT_NATIVE_LOCKMODE

HINT_FETCHGRAPH

HINT_LOADGRAPH

HINT_FOLLOW_ON_LOCKING

HINT_PASS_DISTINCT_THROUGH

构造器详细资料

QueryHints

方法详细资料

getDefinedHints