Class ClassMap
java.lang.Object
org.codehaus.plexus.util.introspection.ClassMap
A cache of introspection information for a specific class instance. Keys
Method
objects by
a concatenation of the method name and the names of classes that make up the parameters.-
Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionprivate static final class
private static final class
Used for the iterative discovery process for public methods. -
Field Summary
FieldsModifier and TypeFieldDescriptionprivate static final ClassMap.CacheMiss
private final Class
Class passed into the constructor used to as the basis for the Method map.Cache of Methods, or CACHE_MISS, keyed by method name and actual arguments used to find it.private final MethodMap
private static final Object
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionfindMethod
(String name, Object[] params) Find a Method using the methodKey provided.private static Method[]
getAccessibleMethods
(Class clazz) Retrieves public methods for a class.private static int
getAccessibleMethods
(Class clazz, ClassMap.MethodInfo[] methodInfos, int upcastCount) Recursively finds a match for each method, starting with the class, and then searching the superclass and interfaces.(package private) Class
private static Method
getPublicMethod
(Class clazz, String name, Class[] paramTypes) Looks up the method with specified name and signature in the first public superclass or implemented interface of the class.static Method
getPublicMethod
(Method method) For a given method, retrieves its publicly accessible counterpart.private String
makeMethodKey
(Method method) Make a methodKey for the given method using the concatenation of the name and the types of the method parameters.private static String
makeMethodKey
(String method, Object[] params) private void
Populate the Map of direct hits.
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Field Details
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CACHE_MISS
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OBJECT
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clazz
Class passed into the constructor used to as the basis for the Method map. -
methodCache
Cache of Methods, or CACHE_MISS, keyed by method name and actual arguments used to find it. -
methodMap
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Constructor Details
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ClassMap
Standard constructor- Parameters:
clazz
- the Class
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Method Details
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getCachedClass
Class getCachedClass()- Returns:
- the class object whose methods are cached by this map.
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findMethod
Find a Method using the methodKey provided.
Look in the methodMap for an entry. If found, it'll either be a CACHE_MISS, in which case we simply give up, or it'll be a Method, in which case, we return it.
If nothing is found, then we must actually go and introspect the method from the MethodMap.
- Parameters:
name
- method nameparams
- method params- Returns:
- the find Method or
null
- Throws:
MethodMap.AmbiguousException
- if ambiguous name
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populateMethodCache
private void populateMethodCache()Populate the Map of direct hits. These are taken from all the public methods that our class provides. -
makeMethodKey
Make a methodKey for the given method using the concatenation of the name and the types of the method parameters. -
makeMethodKey
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getAccessibleMethods
Retrieves public methods for a class. In case the class is not public, retrieves methods with same signature as its public methods from public superclasses and interfaces (if they exist). Basically upcasts every method to the nearest accessible method. -
getAccessibleMethods
private static int getAccessibleMethods(Class clazz, ClassMap.MethodInfo[] methodInfos, int upcastCount) Recursively finds a match for each method, starting with the class, and then searching the superclass and interfaces.- Parameters:
clazz
- Class to checkmethodInfos
- array of methods we are searching to matchupcastCount
- current number of methods we have matched- Returns:
- count of matched methods
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getPublicMethod
For a given method, retrieves its publicly accessible counterpart. This method will look for a method with same name and signature declared in a public superclass or implemented interface of this method's declaring class. This counterpart method is publicly callable.- Parameters:
method
- a method whose publicly callable counterpart is requested.- Returns:
- the publicly callable counterpart method. Note that if the parameter method is itself declared by a public class, this method is an identity function.
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getPublicMethod
Looks up the method with specified name and signature in the first public superclass or implemented interface of the class.- Parameters:
clazz
- the class whose method is soughtname
- the name of the methodparamTypes
- the classes of method parameters
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