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java.lang.Objectorg.apache.bsf.util.ReflectionUtils
public class ReflectionUtils
This file is a collection of reflection utilities. There are utilities for creating beans, getting bean infos, setting/getting properties, and binding events.
Constructor Summary | |
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ReflectionUtils()
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Method Summary | |
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static void |
addEventListener(Object source,
String eventSetName,
EventProcessor processor)
Add an event processor as a listener to some event coming out of an object. |
static Bean |
createBean(ClassLoader cld,
String className,
Class[] argTypes,
Object[] args)
Create a bean using given class loader and using the appropriate constructor for the given args of the given arg types. |
static Bean |
createBean(ClassLoader cld,
String className,
Object[] args)
Create a bean using given class loader and using the appropriate constructor for the given args. |
static Bean |
getField(Object target,
String fieldName)
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static Bean |
getProperty(Object target,
String propName,
Integer index)
Get a property of a bean. |
static void |
setField(Object target,
String fieldName,
Bean value,
TypeConvertorRegistry tcr)
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static void |
setProperty(Object target,
String propName,
Integer index,
Object value,
Class valueType,
TypeConvertorRegistry tcr)
Set a property of a bean to a given value. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ReflectionUtils()
Method Detail |
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public static void addEventListener(Object source, String eventSetName, EventProcessor processor) throws IntrospectionException, IllegalArgumentException, IllegalAccessException, InstantiationException, InvocationTargetException
source
- event sourceeventSetName
- name of event set from event src to bind toprocessor
- event processor the event should be delegated to
when it occurs; either via processEvent or
processExceptionableEvent.
IntrospectionException
- if unable to introspect
IllegalArgumentException
- if event set is unknown
IllegalAccessException
- if the event adapter class or
initializer is not accessible.
InstantiationException
- if event adapter instantiation fails
InvocationTargetException
- if something goes wrong while
running add event listener methodpublic static Bean createBean(ClassLoader cld, String className, Class[] argTypes, Object[] args) throws ClassNotFoundException, NoSuchMethodException, InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, IOException
cld
- the class loader to use. If null, Class.forName is used.className
- name of class to instantiateargTypes
- array of argument typesargs
- array of arguments
ClassNotFoundException
- if class is not loaded
NoSuchMethodException
- if constructor can't be found
InstantiationException
- if class can't be instantiated
IllegalAccessException
- if class is not accessible
IllegalArgumentException
- if argument problem
InvocationTargetException
- if constructor excepted
IOException
- if I/O error in beans.instantiatepublic static Bean createBean(ClassLoader cld, String className, Object[] args) throws ClassNotFoundException, NoSuchMethodException, InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, IOException
cld
- the class loader to use. If null, Class.forName is used.className
- name of class to instantiateargs
- array of arguments
ClassNotFoundException
- if class is not loaded
NoSuchMethodException
- if constructor can't be found
InstantiationException
- if class can't be instantiated
IllegalAccessException
- if class is not accessible
IllegalArgumentException
- if argument problem
InvocationTargetException
- if constructor excepted
IOException
- if I/O error in beans.instantiatepublic static Bean getField(Object target, String fieldName) throws IllegalArgumentException, IllegalAccessException
IllegalArgumentException
IllegalAccessException
public static Bean getProperty(Object target, String propName, Integer index) throws IntrospectionException, IllegalArgumentException, IllegalAccessException, InvocationTargetException
target
- the object whose prop is to be gottenpropName
- name of the property to setindex
- index to get (if property is indexed)
IntrospectionException
- if unable to introspect
IllegalArgumentException
- if problems with args: if the
property is unknown, or if the property is given an index
when its not, or if the property is not writeable, or if
the given value cannot be assigned to the it (type mismatch).
IllegalAccessException
- if read method is not accessible
InvocationTargetException
- if read method exceptspublic static void setField(Object target, String fieldName, Bean value, TypeConvertorRegistry tcr) throws IllegalArgumentException, IllegalAccessException
IllegalArgumentException
IllegalAccessException
public static void setProperty(Object target, String propName, Integer index, Object value, Class valueType, TypeConvertorRegistry tcr) throws IntrospectionException, IllegalArgumentException, IllegalAccessException, InvocationTargetException
target
- the object whose prop is to be setpropName
- name of the property to setindex
- index to set (if property is indexed)value
- the property valuevalueType
- the type of the above (needed when its null)tcr
- type convertor registry to use to convert value type to
property type if necessary
IntrospectionException
- if unable to introspect
IllegalArgumentException
- if problems with args: if the
property is unknown, or if the property is given an index
when its not, or if the property is not writeable, or if
the given value cannot be assigned to the it (type mismatch).
IllegalAccessException
- if write method is not accessible
InvocationTargetException
- if write method excepts
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