io.datakernel.asm.DefiningClassLoader Maven / Gradle / Ivy
/*
* Copyright (C) 2015 SoftIndex LLC.
*
* 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 io.datakernel.asm;
import java.util.HashMap;
import java.util.Map;
/**
* Represents a loader for defining dynamically generated classes.
* Also contains cache, that speeds up loading of classes, which have the same structure as the ones already loaded.
*/
public class DefiningClassLoader extends ClassLoader {
private final Map> definedClasses = new HashMap<>();
public DefiningClassLoader() {
}
public DefiningClassLoader(ClassLoader parent) {
super(parent);
}
public Class defineClass(String name, byte[] b) {
return defineClass(name, b, 0, b.length);
}
public void addToCache(Object key, Class definedClass) {
definedClasses.put(key, definedClass);
}
public Class getClassByKey(Object key) {
return definedClasses.get(key);
}
}