Package org.apache.catalina.util
Class Introspection
- java.lang.Object
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- org.apache.catalina.util.Introspection
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public class Introspection extends java.lang.Object
Provides introspection utilities that either require knowledge of Tomcat internals or are solely used by Tomcat internals.
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Constructor Summary
Constructors Constructor Description Introspection()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static java.lang.Class<?>
convertPrimitiveType(java.lang.Class<?> clazz)
Converts the primitive type to its corresponding wrapper.static java.lang.reflect.Field[]
getDeclaredFields(java.lang.Class<?> clazz)
Obtain the declared fields for a class taking account of any security manager that may be configured.static java.lang.reflect.Method[]
getDeclaredMethods(java.lang.Class<?> clazz)
Obtain the declared methods for a class taking account of any security manager that may be configured.static java.lang.String
getPropertyName(java.lang.reflect.Method setter)
Extract the Java Bean property name from the setter name.static boolean
isValidLifecycleCallback(java.lang.reflect.Method method)
Determines if a method is a valid lifecycle callback method.static boolean
isValidSetter(java.lang.reflect.Method method)
Determines if a method has a valid name and signature for a Java Bean setter.static java.lang.Class<?>
loadClass(Context context, java.lang.String className)
Attempt to load a class using the given Container's class loader.
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Method Detail
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getPropertyName
public static java.lang.String getPropertyName(java.lang.reflect.Method setter)
Extract the Java Bean property name from the setter name. Note: This method assumes that the method name has already been checked for correctness.- Parameters:
setter
- The setter method- Returns:
- the bean property name
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isValidSetter
public static boolean isValidSetter(java.lang.reflect.Method method)
Determines if a method has a valid name and signature for a Java Bean setter.- Parameters:
method
- The method to test- Returns:
true
if the method does have a valid name and signature, elsefalse
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isValidLifecycleCallback
public static boolean isValidLifecycleCallback(java.lang.reflect.Method method)
Determines if a method is a valid lifecycle callback method.- Parameters:
method
- The method to test- Returns:
true
if the method is a valid lifecycle callback method, elsefalse
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getDeclaredFields
public static java.lang.reflect.Field[] getDeclaredFields(java.lang.Class<?> clazz)
Obtain the declared fields for a class taking account of any security manager that may be configured.- Parameters:
clazz
- The class to introspect- Returns:
- the class fields as an array
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getDeclaredMethods
public static java.lang.reflect.Method[] getDeclaredMethods(java.lang.Class<?> clazz)
Obtain the declared methods for a class taking account of any security manager that may be configured.- Parameters:
clazz
- The class to introspect- Returns:
- the class methods as an array
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loadClass
public static java.lang.Class<?> loadClass(Context context, java.lang.String className)
Attempt to load a class using the given Container's class loader. If the class cannot be loaded, a debug level log message will be written to the Container's log and null will be returned.- Parameters:
context
- The class loader of this context will be used to attempt to load the classclassName
- The class name- Returns:
- the loaded class or
null
if loading failed
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convertPrimitiveType
public static java.lang.Class<?> convertPrimitiveType(java.lang.Class<?> clazz)
Converts the primitive type to its corresponding wrapper.- Parameters:
clazz
- Class that will be evaluated- Returns:
- if the parameter is a primitive type returns its wrapper; otherwise returns the same class
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