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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.config;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.List;
/**
* @author gjoranv
* @since 5.1.4
*/
public class InnerNodeVector<NODE extends InnerNode> extends NodeVector<NODE> {
NODE defaultNode;
/**
* Creates a new vector with the given default node.
*/
// TODO: remove this ctor when the library uses reflection via builders, and resizing won't be necessary
public InnerNodeVector(NODE defaultNode) {
assert (defaultNode != null) : "The default node cannot be null";
this.defaultNode = defaultNode;
if (createNew() == null) {
throw new NullPointerException("Unable to duplicate the default node.");
}
}
public InnerNodeVector(List<NODE> nodes, NODE defaultNode) {
this(defaultNode);
for (NODE node : nodes) {
vector.add(node);
}
}
/**
* Creates a new Node by creating a new instance with the 0-argument constructor
*/
// TODO: remove when the library uses reflection via builders
@SuppressWarnings("unchecked")
protected NODE createNew() {
try {
Constructor<? extends InnerNode> ctor = defaultNode.getClass().getDeclaredConstructor();
ctor.setAccessible(true);
return (NODE) ctor.newInstance();
} catch (InvocationTargetException | IllegalAccessException | InstantiationException | NoSuchMethodException e) {
throw new ConfigurationRuntimeException(e);
}
}
}
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