Commons JEXL 2.1.1 · org.apache.commons.jexl2.internal.Introspector

Modifier and Type	Field and Description
private volatile SoftReference<IntrospectorBase>	ref The soft reference to the introspector currently in use.
protected final Log	rlog The logger to use for all warnings & errors.

Access	Constructor and Description
protected	Introspector(Log the logger to use for warnings. log) Creates an introspector.

Method Summary

Modifier and Type	Method and Description
protected final IntrospectorBase	Returns: the introspector base() Gets the current introspector base.
public Class<?>	Returns: the class instance or null if it could not be found getClassByName(String the class name className) Gets a class by name through this introspector class loader.
public final Constructor<?>	Returns: a `java.lang.reflect.Constructor` or null if no unambiguous contructor could be found through introspection. getConstructor(Object the object ctorHandle, Object[] contructor arguments args) Returns a general constructor.
public final Field	Returns: a `java.lang.reflect.Field` or null if it does not exist or is not accessible getField(Class<?> Class in which the field search is taking place c, String Name of the field being searched for key) Gets the field named by `key` for the class `c`.
public final String[]	Returns: the class field names getFieldNames(Class<?> the class c) Gets the accessible field names known for a given class.
public final AbstractExecutor.Get	Returns: a `AbstractExecutor.Get`. getGetExecutor(Object the object to base the property from. obj, Object property name identifier) Return a property getter.
public final Method	Returns: a `java.lang.reflect.Method` or null if no unambiguous method could be found through introspection. getMethod(Class<?> Class in which the method search is taking place c, String Name of the method being searched for name, Object[] An array of Objects (not Classes) that describe the the parameters params) Gets the method defined by `name` and `params` for the Class `c`.
public final Method	Returns: a `java.lang.reflect.Method` or null if no unambiguous method could be found through introspection. getMethod(Class<?> Class in which the method search is taking place c, MethodKey MethodKey of the method being searched for key) Gets the method defined by `key` and for the Class `c`.
public final AbstractExecutor.Method	Returns: a `AbstractExecutor.Method`. getMethodExecutor(Object the object obj, String the method name name, Object[] method arguments args) Returns a general method.
public final String[]	Returns: the class method names getMethodNames(Class<?> the class c) Gets the accessible methods names known for a given class.
public final Method[]	Returns: the array of methods getMethods(Class<?> the class c, final String the seeked methods name methodName) Gets all the methods with a given name from this map.
public final AbstractExecutor.Set	Returns: a `AbstractExecutor.Set`. getSetExecutor(final Object the object to base the property from. obj, final Object property name (or identifier) identifier, Object value to set arg) Return a property setter.
public void	setClassLoader(ClassLoader the loader to use loader) Sets the underlying class loader for class solving resolution.
protected Integer	Returns: an Integer if it can be converted, null otherwise toInteger(Object the Object to coerce arg) Coerce an Object to an Integer.
protected String	Returns: a String if it can be converted, null otherwise toString(Object the Object to coerce arg) Coerce an Object to a String.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

ref	back to summary
private volatile SoftReference<IntrospectorBase> ref The soft reference to the introspector currently in use.

rlog	back to summary
protected final Log rlog The logger to use for all warnings & errors.

Introspector	back to summary
protected Introspector(Log log) Creates an introspector. Parameters log:Log the logger to use for warnings.

Method Detail

base	back to summary
protected final IntrospectorBase base() Gets the current introspector base. If the reference has been collected, this method will recreate the underlying introspector. Returns:IntrospectorBase the introspector

base

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protected final IntrospectorBase base()

Gets the current introspector base.

If the reference has been collected, this method will recreate the underlying introspector.

Returns:IntrospectorBase: the introspector

getClassByName	back to summary
public Class<?> getClassByName(String className) Gets a class by name through this introspector class loader. Parameters className:String the class name Returns:Class<?> the class instance or null if it could not be found

getClassByName

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public Class<?> getClassByName(String className)

Gets a class by name through this introspector class loader.

Parameters

className:String: the class name

Returns:Class<?>

the class instance or null if it could not be found

getConstructor back to summary

getConstructor	back to summary
public final Constructor<?> getConstructor(Object ctorHandle, Object[] args) Returns a general constructor. Parameters ctorHandle:Object the object args:Object[] contructor arguments Returns:Constructor<?> a `java.lang.reflect.Constructor` or null if no unambiguous contructor could be found through introspection.

public final Constructor<?> getConstructor(Object ctorHandle, Object[] args)

Returns a general constructor.

Parameters

ctorHandle:Object: the object
args:Object[]: contructor arguments

Returns:Constructor<?>

a java.lang.reflect.Constructor or null if no unambiguous contructor could be found through introspection.

getField back to summary

getField	back to summary
public final Field getField(Class<?> c, String key) Gets the field named by `key` for the class `c`. Parameters c:Class<?> Class in which the field search is taking place key:String Name of the field being searched for Returns:Field a `java.lang.reflect.Field` or null if it does not exist or is not accessible

public final Field getField(Class<?> c, String key)

Gets the field named by key for the class c.

Parameters

c:Class<?>: Class in which the field search is taking place
key:String: Name of the field being searched for

Returns:Field

a java.lang.reflect.Field or null if it does not exist or is not accessible

getFieldNames	back to summary
public final String[] getFieldNames(Class<?> c) Gets the accessible field names known for a given class. Parameters c:Class<?> the class Returns:String[] the class field names

getFieldNames

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public final String[] getFieldNames(Class<?> c)

Gets the accessible field names known for a given class.

Parameters

c:Class<?>: the class

Returns:String[]

the class field names

getGetExecutor back to summary

getGetExecutor	back to summary
public final AbstractExecutor.Get getGetExecutor(Object obj, Object identifier) Return a property getter. Parameters obj:Object the object to base the property from. identifier:Object property name Returns:AbstractExecutor.Get a `AbstractExecutor.Get`.

public final AbstractExecutor.Get getGetExecutor(Object obj, Object identifier)

Return a property getter.

Parameters

obj:Object: the object to base the property from.
identifier:Object: property name

Returns:AbstractExecutor.Get

a AbstractExecutor.Get.

getMethod back to summary

getMethod	back to summary
public final Method getMethod(Class<?> c, String name, Object[] params) Gets the method defined by `name` and `params` for the Class `c`. Parameters c:Class<?> Class in which the method search is taking place name:String Name of the method being searched for params:Object[] An array of Objects (not Classes) that describe the the parameters Returns:Method a `java.lang.reflect.Method` or null if no unambiguous method could be found through introspection.

public final Method getMethod(Class<?> c, String name, Object[] params)

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

Parameters

c:Class<?>: Class in which the method search is taking place
name:String: Name of the method being searched for
params:Object[]: An array of Objects (not Classes) that describe the the parameters

Returns:Method

a java.lang.reflect.Method or null if no unambiguous method could be found through introspection.

getMethod back to summary

getMethod	back to summary
public final Method getMethod(Class<?> c, MethodKey key) Gets the method defined by `key` and for the Class `c`. Parameters c:Class<?> Class in which the method search is taking place key:MethodKey MethodKey of the method being searched for Returns:Method a `java.lang.reflect.Method` or null if no unambiguous method could be found through introspection.

public final Method getMethod(Class<?> c, MethodKey key)

Gets the method defined by key and for the Class c.

Parameters

c:Class<?>: Class in which the method search is taking place
key:MethodKey: MethodKey of the method being searched for

Returns:Method

a java.lang.reflect.Method or null if no unambiguous method could be found through introspection.

getMethodExecutor back to summary

getMethodExecutor	back to summary
public final AbstractExecutor.Method getMethodExecutor(Object obj, String name, Object[] args) Returns a general method. Parameters obj:Object the object name:String the method name args:Object[] method arguments Returns:AbstractExecutor.Method a `AbstractExecutor.Method`.

public final AbstractExecutor.Method getMethodExecutor(Object obj, String name, Object[] args)

Returns a general method.

Parameters

obj:Object: the object
name:String: the method name
args:Object[]: method arguments

Returns:AbstractExecutor.Method

a AbstractExecutor.Method.

getMethodNames	back to summary
public final String[] getMethodNames(Class<?> c) Gets the accessible methods names known for a given class. Parameters c:Class<?> the class Returns:String[] the class method names

getMethodNames

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public final String[] getMethodNames(Class<?> c)

Gets the accessible methods names known for a given class.

Parameters

c:Class<?>: the class

Returns:String[]

the class method names

getMethods	back to summary
public final Method[] getMethods(Class<?> c, final String methodName) Gets all the methods with a given name from this map. Parameters c:Class<?> the class methodName:String the seeked methods name Returns:Method[] the array of methods

getMethods

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public final Method[] getMethods(Class<?> c, final String methodName)

Gets all the methods with a given name from this map.

Parameters

c:Class<?>: the class
methodName:String: the seeked methods name

Returns:Method[]

the array of methods

getSetExecutor back to summary

getSetExecutor	back to summary
public final AbstractExecutor.Set getSetExecutor(final Object obj, final Object identifier, Object arg) Return a property setter. Parameters obj:Object the object to base the property from. identifier:Object property name (or identifier) arg:Object value to set Returns:AbstractExecutor.Set a `AbstractExecutor.Set`.

public final AbstractExecutor.Set getSetExecutor(final Object obj, final Object identifier, Object arg)

Return a property setter.

Parameters

obj:Object: the object to base the property from.
identifier:Object: property name (or identifier)
arg:Object: value to set

Returns:AbstractExecutor.Set

a AbstractExecutor.Set.

setClassLoader	back to summary
public void setClassLoader(ClassLoader loader) Sets the underlying class loader for class solving resolution. Parameters loader:ClassLoader the loader to use

setClassLoader

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public void setClassLoader(ClassLoader loader)

Sets the underlying class loader for class solving resolution.

Parameters

loader:ClassLoader: the loader to use

toInteger	back to summary
protected Integer toInteger(Object arg) Coerce an Object to an Integer. Parameters arg:Object the Object to coerce Returns:Integer an Integer if it can be converted, null otherwise

toInteger

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protected Integer toInteger(Object arg)

Coerce an Object to an Integer.

Parameters

arg:Object: the Object to coerce

Returns:Integer

an Integer if it can be converted, null otherwise

toString	back to summary
protected String toString(Object arg) Coerce an Object to a String. Parameters arg:Object the Object to coerce Returns:String a String if it can be converted, null otherwise

toString

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protected String toString(Object arg)

Coerce an Object to a String.

Parameters

arg:Object: the Object to coerce

Returns:String

a String if it can be converted, null otherwise

public Class Introspector

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