com.pdd.pop.ext.glassfish.grizzly.attributes.DefaultAttributeBuilder Maven / Gradle / Ivy
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2008-2013 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.pdd.pop.ext.glassfish.grizzly.attributes;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.pdd.pop.ext.glassfish.grizzly.utils.NullaryFunction;
/**
* Default {@link AttributeBuilder} implementation.
*
* @see AttributeBuilder
*
* @author Alexey Stashok
*/
public class DefaultAttributeBuilder implements AttributeBuilder {
protected final List attributes = new ArrayList();
protected final Map name2Attribute = new HashMap();
/**
* {@inheritDoc}
*/
@Override
public synchronized Attribute createAttribute(final String name) {
return createAttribute(name, (T) null);
}
/**
* {@inheritDoc}
*/
@Override
@SuppressWarnings("unchecked")
public synchronized Attribute createAttribute(final String name,
final T defaultValue) {
Attribute attribute = name2Attribute.get(name);
if (attribute == null) {
attribute = new Attribute(this, name, attributes.size(), defaultValue);
attributes.add(attribute);
name2Attribute.put(name, attribute);
}
return attribute;
}
/**
* {@inheritDoc}
*/
@Override
@SuppressWarnings("unchecked")
public synchronized Attribute createAttribute(final String name,
final NullaryFunction initializer) {
Attribute attribute = name2Attribute.get(name);
if (attribute == null) {
attribute = new Attribute(this, name, attributes.size(), initializer);
attributes.add(attribute);
name2Attribute.put(name, attribute);
}
return attribute;
}
@Override
public Attribute createAttribute(final String name,
final com.pdd.pop.ext.glassfish.grizzly.attributes.NullaryFunction initializer) {
return createAttribute(name, initializer == null ?
null :
new NullaryFunction() {
@Override
public T evaluate() {
return initializer.evaluate();
}
});
}
@Override
public AttributeHolder createSafeAttributeHolder() {
return new IndexedAttributeHolder(this);
}
@Override
public AttributeHolder createUnsafeAttributeHolder() {
return new UnsafeAttributeHolder(this);
}
protected Attribute getAttributeByName(final String name) {
return name2Attribute.get(name);
}
protected Attribute getAttributeByIndex(final int index) {
return attributes.get(index);
}
}