Class PoolImplUtils
- java.lang.Object
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- org.datanucleus.store.rdbms.datasource.dbcp2.pool2.impl.PoolImplUtils
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class PoolImplUtils extends java.lang.Object
Implementation specific utilities.- Since:
- 2.0
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Constructor Summary
Constructors Constructor Description PoolImplUtils()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description (package private) static java.lang.Class<?>
getFactoryType(java.lang.Class<? extends PooledObjectFactory> factoryClass)
Identifies the concrete type of object that an object factory creates.private static <T> java.lang.Object
getGenericType(java.lang.Class<T> type, java.lang.Class<? extends T> clazz)
Obtains the concrete type used by an implementation of an interface that uses a generic type.private static <T> java.lang.reflect.ParameterizedType
getParameterizedType(java.lang.Class<T> type, java.lang.Class<? extends T> clazz)
Gets the matching parameterized type or null.private static java.lang.Object
getTypeParameter(java.lang.Class<?> clazz, java.lang.reflect.Type argType)
For a generic parameter, return either the Class used or if the type is unknown, the index for the type in definition of the class
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Method Detail
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getFactoryType
static java.lang.Class<?> getFactoryType(java.lang.Class<? extends PooledObjectFactory> factoryClass)
Identifies the concrete type of object that an object factory creates.- Parameters:
factoryClass
- The factory to examine- Returns:
- the type of object the factory creates
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getGenericType
private static <T> java.lang.Object getGenericType(java.lang.Class<T> type, java.lang.Class<? extends T> clazz)
Obtains the concrete type used by an implementation of an interface that uses a generic type.- Type Parameters:
T
- The interface type- Parameters:
type
- The interface that defines a generic typeclazz
- The class that implements the interface with a concrete type- Returns:
- concrete type used by the implementation
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getParameterizedType
private static <T> java.lang.reflect.ParameterizedType getParameterizedType(java.lang.Class<T> type, java.lang.Class<? extends T> clazz)
Gets the matching parameterized type or null.- Type Parameters:
T
- The interface type.- Parameters:
type
- The interface that defines a generic type.clazz
- The class that implements the interface with a concrete type.- Returns:
- the matching parameterized type or null.
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getTypeParameter
private static java.lang.Object getTypeParameter(java.lang.Class<?> clazz, java.lang.reflect.Type argType)
For a generic parameter, return either the Class used or if the type is unknown, the index for the type in definition of the class- Parameters:
clazz
- defining classargType
- the type argument of interest- Returns:
- An instance of
Class
representing the type used by the type parameter or an instance ofInteger
representing the index for the type in the definition of the defining class
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