stream.runtime.setup

Class ParameterDiscovery

java.lang.Object

stream.runtime.setup.ParameterDiscovery

public class ParameterDiscovery
extends Object

This class implements an annotation-based parameter-type discovery. This allows for annotating class fields and automatically adding these fields to the RapidMiner operator object.

Author:

Christian Bockermann

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static org.slf4j.Logger	log

Constructor Summary

Constructors

Constructor and Description
ParameterDiscovery()

Method Summary

Modifier and Type	Method and Description
static List<Parameter>	discoverParameterAnnotations(Class<?> clazz)
static Map<String,Class<?>>	discoverParameters(Class<?> clazz) Check the given class for any @parameter annotated fields.
static Parameter	getParameterAnnotation(Class<?> clazz, String key) This method returns the parameter annotation from the given class for the specified parameter key.
static String	getParameterName(Method m)
static Class<?>	getParameterType(Class<?> clazz, String name)
static Map<String,String>	getProperties(String prefix, Properties p)
static Map<String,String>	getSystemProperties(String prefix)
static boolean	isGetter(Method m) This method defines whether a method matches all requirements of being a get-Method.
static boolean	isSetter(Method m) This method defines whether a method matches all requirements of being a get-Method.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

log

static org.slf4j.Logger log

Constructor Detail

ParameterDiscovery

public ParameterDiscovery()

Method Detail

discoverParameters

public static Map<String,Class<?>> discoverParameters(Class<?> clazz)

Check the given class for any @parameter annotated fields.

Parameters:

clazz -

Returns:

getParameterAnnotation

public static Parameter getParameterAnnotation(Class<?> clazz,
                                               String key)

This method returns the parameter annotation from the given class for the specified parameter key. If attribute has been annotated with the given key as name, then this method will return null.

Parameters:

clazz -

key -

Returns:

getParameterType

public static Class<?> getParameterType(Class<?> clazz,
                                        String name)

discoverParameterAnnotations

public static List<Parameter> discoverParameterAnnotations(Class<?> clazz)

getParameterName

public static String getParameterName(Method m)

isGetter

public static boolean isGetter(Method m)

This method defines whether a method matches all requirements of being a get-Method. Basically this requires the name to start with get and the return type to be any of the ones supported for injection.

Parameters:

m -

Returns:

isSetter

public static boolean isSetter(Method m)

This method defines whether a method matches all requirements of being a get-Method. Basically this requires the name to start with set and the single (!) parameter type to be any of the ones supported for injection.

Parameters:

m -

Returns:

getProperties

public static Map<String,String> getProperties(String prefix,
                                               Properties p)

getSystemProperties

public static Map<String,String> getSystemProperties(String prefix)