Cutin/lib/src/main/java/net/tomatentum/cutin/container/MultiMethodContainer.java

122 lines
3.7 KiB
Java

package net.tomatentum.cutin.container;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.HashSet;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import net.tomatentum.cutin.factory.ReflectedMethodFactory;
import net.tomatentum.cutin.method.ReflectedMethod;
import net.tomatentum.cutin.util.ReflectionUtil;
public class MultiMethodContainer<I extends Object, C extends Object> implements MethodContainer<I, C> {
private Set<Entry<I, C>> entries;
private ReflectedMethodFactory<I, C> factory;
public MultiMethodContainer(ReflectedMethodFactory<I, C> factory) {
this.entries = new HashSet<>();
this.factory = factory;
}
@Override
public MethodContainer<I, C> addMethod(ReflectedMethod<I, C> method) {
Optional<Entry<I, C>> oentry = this.entries.stream()
.filter(e -> method.identifier().equals(e.identifier()))
.findFirst();
Entry<I, C> entry = oentry.orElse(new Entry<>(method.identifier())).addMethod(method);
if (oentry.isEmpty()) this.entries.add(entry);
return this;
}
@Override
public MethodContainer<I, C> addMethods(Object containingObject, Method... methods) {
for (Method method : methods)
this.factory.produce(method, containingObject)
.ifPresent(this::addMethod);
return this;
}
@Override
public Set<I> identifiers() {
return entries().stream()
.map(Entry::identifier)
.collect(Collectors.toSet());
}
@Override
public Collection<ReflectedMethod<I, C>> methods() {
return this.entries.stream()
.flatMap(e -> e.methods.stream())
.toList();
}
@Override
public Collection<ReflectedMethod<I, C>> findFor(I identifier) {
return this.entries.stream()
.filter(e -> e.identifier().equals(identifier))
.flatMap(e -> e.methods.stream())
.toList();
}
@Override
public Optional<ReflectedMethod<I, C>> findFirstFor(I identifier) {
return this.entries.stream()
.filter(e -> e.identifier().equals(identifier))
.flatMap(e -> e.methods.stream())
.findFirst();
}
protected Set<Entry<I, C>> entries() {
return this.entries;
}
public ReflectedMethodFactory<I, C> factory() {
return this.factory;
}
public static record Entry<I extends Object, C extends Object>(I identifier, Set<ReflectedMethod<I, C>> methods) {
public Entry(I identifier) {
this(identifier, new HashSet<>());
}
private static Logger logger = LoggerFactory.getLogger(Entry.class);
public Entry<I, C> addMethod(ReflectedMethod<I, C> method) {
I midentifier = method.identifier();
if (!this.identifier().equals(midentifier))
throw new IllegalArgumentException("Method's identifier did not equal the entry's identifier");
this.methods.add(method);
logger.debug("Added method {} to entry {}", ReflectionUtil.getFullMethodName(method.method()), this);
return this;
}
@Override
public boolean equals(Object obj) {
if (!(obj instanceof Entry))
return false;
Entry<?, ?> other = (Entry<?, ?>) obj;
return other.identifier().equals(identifier());
}
@Override
public int hashCode() {
return this.identifier().hashCode();
}
@Override
public String toString() {
return "Ident(%s)".formatted(identifier().toString());
}
}
}