bboss.org.apache.velocity.util.introspection

类 IntrospectorBase

java.lang.Object

bboss.org.apache.velocity.util.introspection.IntrospectorBase

直接已知子类:

Introspector

public abstract class IntrospectorBase
extends java.lang.Object

Lookup a a Method object for a particular class given the name of a method and its parameters. The first time the Introspector sees a class it creates a class method map for the class in question. Basically the class method map is a Hashtable where Method objects are keyed by a concatenation of the method name and the names of classes that make up the parameters. For example, a method with the following signature: public void method(String a, StringBuilder b) would be mapped by the key: "method" + "java.lang.String" + "java.lang.StringBuffer" This mapping is performed for all the methods in a class and stored for.

字段概要

字段

限定符和类型	字段和说明
protected Log	log Class logger

构造器概要

构造器

限定符	构造器和说明
protected	IntrospectorBase(Log log) C'tor.

方法概要

限定符和类型	方法和说明
protected IntrospectorCache	getIntrospectorCache() Return the internal IntrospectorCache object.
java.lang.reflect.Method	getMethod(java.lang.Class c, java.lang.String name, java.lang.Object[] params) Gets the method defined by name and params for the Class c.

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

log

protected final Log log

Class logger

构造器详细资料

IntrospectorBase

protected IntrospectorBase(Log log)

C'tor.

方法详细资料

getMethod

public java.lang.reflect.Method getMethod(java.lang.Class c,
                                          java.lang.String name,
                                          java.lang.Object[] params)
                                   throws java.lang.IllegalArgumentException,
                                          MethodMap.AmbiguousException

Gets the method defined by name and params for the Class c.

参数:

c - Class in which the method search is taking place

name - Name of the method being searched for

params - An array of Objects (not Classes) that describe the the parameters

返回:

The desired Method object.

抛出:

java.lang.IllegalArgumentException - When the parameters passed in can not be used for introspection.

MethodMap.AmbiguousException - When the method map contains more than one match for the requested signature.

getIntrospectorCache

protected IntrospectorCache getIntrospectorCache()

Return the internal IntrospectorCache object.

返回:

The internal IntrospectorCache object.

从以下版本开始:

1.5