io.leangen.graphql.util

Class ClassFinder

java.lang.Object

io.leangen.graphql.util.ClassFinder

public class ClassFinder
extends Object

Enables discovery of classes that extend or implement a given class. Instances maintain a cache of search results and should be reused for better performance. The cache is thread-safe but allows for multiple search requests to go through if they arrive at exactly the same time. This class operates in best-effort manner and only logs (never rethrows) any exceptions that occur during the search or class loading.

Field Summary

Fields

Modifier and Type	Field and Description
static Predicate<io.github.classgraph.ClassInfo>	ALL
static Predicate<io.github.classgraph.ClassInfo>	CONCRETE
static org.slf4j.Logger	log
static Predicate<io.github.classgraph.ClassInfo>	NON_IGNORED
static Predicate<io.github.classgraph.ClassInfo>	PUBLIC

Constructor Summary

Constructors

Constructor and Description
ClassFinder()

Method Summary

Modifier and Type	Method and Description
void	close()
List<AnnotatedType>	findImplementations(AnnotatedType superType, Predicate<io.github.classgraph.ClassInfo> filter, String... packages) Searches for the implementations/subtypes of the given AnnotatedType.
List<Class<?>>	findImplementations(Class superType, Predicate<io.github.classgraph.ClassInfo> filter, String... packages) Searches for the implementations/subtypes of the given class.

Methods inherited from class java.lang.Object

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

Field Detail

CONCRETE

public static final Predicate<io.github.classgraph.ClassInfo> CONCRETE

NON_IGNORED

public static final Predicate<io.github.classgraph.ClassInfo> NON_IGNORED

PUBLIC

public static final Predicate<io.github.classgraph.ClassInfo> PUBLIC

ALL

public static final Predicate<io.github.classgraph.ClassInfo> ALL

log

public static final org.slf4j.Logger log

Constructor Detail

ClassFinder

public ClassFinder()

Method Detail

findImplementations

public List<AnnotatedType> findImplementations(AnnotatedType superType,
                                               Predicate<io.github.classgraph.ClassInfo> filter,
                                               String... packages)

Searches for the implementations/subtypes of the given AnnotatedType. Only the matching classes are loaded.

Parameters:

superType - The type the implementations/subtypes of which are to be searched for

packages - The packages to limit the search to

Returns:

A collection of AnnotatedTypes discovered that implementation/extend superType

findImplementations

public List<Class<?>> findImplementations(Class superType,
                                          Predicate<io.github.classgraph.ClassInfo> filter,
                                          String... packages)

Searches for the implementations/subtypes of the given class. Only the matching classes are loaded.

Parameters:

superType - The type the implementations/subtypes of which are to be searched for

packages - The packages to limit the search to

Returns:

A collection of classes discovered that implementation/extend superType

close

public void close()