所有已知实现类:

ParameterMetadataImpl, ProcedureParameterMetadata
```
public interface ParameterMetadata
```
Access to known information about the parameters for a query.

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
`Set<QueryParameter<?>>`	`collectAllParameters()`
`Set<javax.persistence.Parameter<?>>`	`collectAllParametersJpa()`
`boolean`	`containsReference(QueryParameter parameter)`
`Set<String>`	`getNamedParameterNames()`	Return the names of all named parameters of the query.
`Collection<QueryParameter>`	`getNamedParameters()`
`int`	`getParameterCount()`
`int`	`getPositionalParameterCount()`	Returns the number of positional parameters.
`Collection<QueryParameter>`	`getPositionalParameters()`
`<T> QueryParameter<T>`	`getQueryParameter(Integer position)`
`<T> QueryParameter<T>`	`getQueryParameter(String name)`
`boolean`	`hasNamedParameters()`	Does this parameter set contain any named parameters?
`boolean`	`hasPositionalParameters()`	Does this parameter set contain any positional parameters?
`<T> QueryParameter<T>`	`resolve(javax.persistence.Parameter<T> param)`
`void`	`visitRegistrations(Consumer<QueryParameter> action)`

- 方法详细资料
  - hasNamedParameters
```
boolean hasNamedParameters()
```
    Does this parameter set contain any named parameters?
    
    返回:
    
    true if there are named parameters; false otherwise.
  - hasPositionalParameters
```
boolean hasPositionalParameters()
```
    Does this parameter set contain any positional parameters?
    
    返回:
    
    true if there are positional parameters; false otherwise.
  - collectAllParameters
```
Set<QueryParameter<?>> collectAllParameters()
```
  - collectAllParametersJpa
```
Set<javax.persistence.Parameter<?>> collectAllParametersJpa()
```
  - getNamedParameterNames
```
Set<String> getNamedParameterNames()
```
    Return the names of all named parameters of the query.
    
    返回:
    
    the parameter names, in no particular order
  - getPositionalParameterCount
```
int getPositionalParameterCount()
```
    Returns the number of positional parameters.
    
    返回:
    
    The number of positional parameters.
  - getQueryParameter
```
<T> QueryParameter<T> getQueryParameter(String name)
```
  - getQueryParameter
```
<T> QueryParameter<T> getQueryParameter(Integer position)
```
  - resolve
```
<T> QueryParameter<T> resolve(javax.persistence.Parameter<T> param)
```
  - getPositionalParameters
```
Collection<QueryParameter> getPositionalParameters()
```
  - getNamedParameters
```
Collection<QueryParameter> getNamedParameters()
```
  - getParameterCount
```
int getParameterCount()
```
  - containsReference
```
boolean containsReference(QueryParameter parameter)
```
  - visitRegistrations
```
void visitRegistrations(Consumer<QueryParameter> action)
```

接口 ParameterMetadata

方法概要

方法详细资料

hasNamedParameters

hasPositionalParameters

collectAllParameters

collectAllParametersJpa

getNamedParameterNames

getPositionalParameterCount

getQueryParameter

getQueryParameter

resolve

getPositionalParameters

getNamedParameters

getParameterCount

containsReference

visitRegistrations