/*
* JBoss, Home of Professional Open Source.
*
* Copyright 2011 Red Hat, Inc. and/or its affiliates, and individual
* contributors as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.xnio;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import static org.xnio._private.Messages.msg;
/**
* @author <a href="mailto:david.lloyd@redhat.com">David M. Lloyd</a>
*/
final class TypeSequenceOption<T> extends Option<Sequence<Class<? extends T>>> {
private static final long serialVersionUID = -4328676629293125136L;
private final transient Class<T> elementDeclType;
private final transient ValueParser<Class<? extends T>> parser;
TypeSequenceOption(final Class<?> declClass, final String name, final Class<T> elementDeclType) {
super(declClass, name);
if (elementDeclType == null) {
throw msg.nullParameter("elementDeclType");
}
this.elementDeclType = elementDeclType;
parser = Option.getClassParser(elementDeclType);
}
public Sequence<Class<? extends T>> cast(final Object o) {
if (o == null) {
return null;
} else if (o instanceof Sequence) {
return castSeq((Sequence<?>) o, elementDeclType);
} else if (o instanceof Object[]){
return castSeq(Sequence.of((Object[]) o), elementDeclType);
} else if (o instanceof Collection) {
return castSeq(Sequence.of((Collection<?>) o), elementDeclType);
} else {
throw new ClassCastException("Not a sequence");
}
}
@SuppressWarnings("unchecked")
static <T> Sequence<Class<? extends T>> castSeq(Sequence<?> seq, Class<T> type) {
for (Object o : seq) {
((Class<?>)o).asSubclass(type);
}
return (Sequence<Class<? extends T>>) seq;
}
public Sequence<Class<? extends T>> parseValue(final String string, final ClassLoader classLoader) throws IllegalArgumentException {
final List<Class<? extends T>> list = new ArrayList<Class<? extends T>>();
if (string.isEmpty()) {
return Sequence.empty();
}
for (String value : string.split(",")) {
list.add(parser.parseValue(value, classLoader));
}
return Sequence.of(list);
}
}