程序包 com.obermuhlner.scriptengine.java.constructor

类 DefaultConstructorStrategy

java.lang.Object

com.obermuhlner.scriptengine.java.constructor.DefaultConstructorStrategy

所有已实现的接口:

ConstructorStrategy

public class DefaultConstructorStrategy
extends Object
implements ConstructorStrategy

The default ConstructorStrategy implementation. This implementation has three static constructor methods to define the constructor that should be called:

• byDefaultConstructor() to call the public default no-argument constructor.
• byArgumentTypes(Class[], Object...) to call the public constructor with the specified argument types and pass it the specified arguments.
• byMatchingArguments(Object...) to call a public constructor that matches the specified arguments.

字段概要

字段

修饰符和类型	字段	说明
private final Object[]	arguments
private Class<?>[]	argumentTypes

构造器概要

构造器

限定符	构造器	说明
private	DefaultConstructorStrategy(Class<?>[] argumentTypes, Object[] arguments)

方法概要

修饰符和类型	方法	说明
static DefaultConstructorStrategy	byArgumentTypes(Class<?>[] argumentTypes, Object... arguments)	Creates a DefaultConstructorStrategy that will call the public constructor with the specified argument types and passes the specified argument list.
static DefaultConstructorStrategy	byDefaultConstructor()	Creates a DefaultConstructorStrategy that will call the public default no-argument constructor.
static DefaultConstructorStrategy	byMatchingArguments(Object... arguments)	Creates a DefaultConstructorStrategy that will call a public constructor that matches the specified arguments.
Object	construct(Class<?> clazz)	Constructs an instance of a Class.
private Constructor<?>	findConstructor(Class<?> clazz, Class<?>[] argumentTypes, Object[] arguments)

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

argumentTypes

private Class<?>[] argumentTypes

arguments

private final Object[] arguments

构造器详细资料

DefaultConstructorStrategy

private DefaultConstructorStrategy(Class<?>[] argumentTypes,
 Object[] arguments)

方法详细资料

construct

public Object construct(Class<?> clazz)
                 throws ScriptException

从接口复制的说明: ConstructorStrategy

Constructs an instance of a Class.

指定者:

construct 在接口中 ConstructorStrategy

参数:

clazz - the Class

返回:

the constructed instance or null

抛出:

ScriptException - if the instance could not be constructed

byDefaultConstructor

public static DefaultConstructorStrategy byDefaultConstructor()

Creates a DefaultConstructorStrategy that will call the public default no-argument constructor.

返回:

the created DefaultConstructorStrategy

byArgumentTypes

public static DefaultConstructorStrategy byArgumentTypes(Class<?>[] argumentTypes,
 Object... arguments)

Creates a DefaultConstructorStrategy that will call the public constructor with the specified argument types and passes the specified argument list.

参数:

argumentTypes - the argument types defining the constructor to call

arguments - the arguments to pass to the constructor (may contain null)

返回:

the created DefaultConstructorStrategy

byMatchingArguments

public static DefaultConstructorStrategy byMatchingArguments(Object... arguments)

Creates a DefaultConstructorStrategy that will call a public constructor that matches the specified arguments. A constructor must match all specified arguments, except null values which match any non-primitive type. The conversion from object types into corresponding primitive types (for example Integer into int) is handled automatically. If multiple public constructors match the specified arguments the construct(Class) method will throw a ScriptException.

参数:

arguments - the arguments to pass to the constructor (may contain null)

返回:

the created DefaultConstructorStrategy

findConstructor

private Constructor<?> findConstructor(Class<?> clazz,
 Class<?>[] argumentTypes,
 Object[] arguments)
                                throws NoSuchMethodException,
ScriptException

抛出:

NoSuchMethodException

ScriptException