package org.apache.brooklyn.core.mgmt.classloading;
import javax.annotation.Nullable;
import org.apache.brooklyn.api.mgmt.ManagementContext;
import org.apache.brooklyn.api.mgmt.classloading.BrooklynClassLoadingContext;
import org.apache.brooklyn.util.guava.Maybe;
import com.google.common.base.Objects;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
@SuppressWarnings("deprecation")
public abstract class AbstractBrooklynClassLoadingContext implements BrooklynClassLoadingContext,
org.apache.brooklyn.core.mgmt.classloading.BrooklynClassLoadingContext {
protected final ManagementContext mgmt;
public AbstractBrooklynClassLoadingContext(ManagementContext mgmt) {
this.mgmt = mgmt;
}
@Override
public ManagementContext getManagementContext() {
return mgmt;
}
@Override
public Class<?> loadClass(String className) {
return tryLoadClass(className).get();
}
@Override
// this is the only one left for subclasses
public abstract Maybe<Class<?>> tryLoadClass(String className);
@Override
public <T> Class<? extends T> loadClass(String className, @Nullable Class<T> supertype) {
return tryLoadClass(className, supertype).get();
}
@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
public <T> Maybe<Class<? extends T>> tryLoadClass(String className, @Nullable Class<T> supertype) {
Maybe<Class<?>> result = tryLoadClass(className);
if (result.isAbsent()) return (Maybe)result;
Class<?> clazz = result.get();
if (supertype==null || supertype.isAssignableFrom(clazz)) return (Maybe)result;
throw new ClassCastException(className+" is not an instance of "+supertype);
}
@Override
public abstract String toString();
@Override
public int hashCode() {
return Objects.hashCode(mgmt);
}
@Override
public boolean equals(Object obj) {
if (!(obj instanceof BrooklynClassLoadingContext)) return false;
if (!Objects.equal(mgmt, ((BrooklynClassLoadingContext)obj).getManagementContext())) return false;
return true;
}
}