/*
 * #%L
 * Apache Geronimo JAX-RS Spec 2.0
 * %%
 * Copyright (C) 2003 - 2014 The Apache Software Foundation
 * %%
 * 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.
 * #L%
 */

package javax.ws.rs.core;

import javax.ws.rs.ext.RuntimeDelegate;
import javax.ws.rs.ext.RuntimeDelegate.HeaderDelegate;


public class EntityTag {

    private static final HeaderDelegate<EntityTag> HEADER_DELEGATE = RuntimeDelegate.getInstance().createHeaderDelegate(EntityTag.class);
    private String value;
    private boolean weak;


    public EntityTag(final String value) {
        this(value, false);
    }


    public EntityTag(final String value, final boolean weak) {
        if (value == null) {
            throw new IllegalArgumentException("value==null");
        }
        this.value = value;
        this.weak = weak;
    }


    public static EntityTag valueOf(final String value) {
        return HEADER_DELEGATE.fromString(value);
    }


    public boolean isWeak() {
        return weak;
    }


    public String getValue() {
        return value;
    }


    @Override
    public boolean equals(final Object obj) {
        if (obj == null) {
            return false;
        }
        if (!(obj instanceof EntityTag)) {
            return super.equals(obj);
        }
        EntityTag other = (EntityTag) obj;
        if (value.equals(other.getValue()) && weak == other.isWeak()) {
            return true;
        }
        return false;
    }


    @Override
    public int hashCode() {
        int hash = 3;
        hash = 17 * hash + (this.value != null ? this.value.hashCode() : 0);
        hash = 17 * hash + (this.weak ? 1 : 0);
        return hash;
    }


    @Override
    public String toString() {
        return HEADER_DELEGATE.toString(this);
    }
}