117 lines
2.8 KiB
Java
117 lines
2.8 KiB
Java
/*
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* Copyright 2012 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.hateoas;
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import java.util.Arrays;
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import javax.xml.bind.annotation.XmlRootElement;
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import org.codehaus.jackson.annotate.JsonUnwrapped;
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import org.springframework.util.Assert;
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/**
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* A simple {@link Resource} wrapping a domain object and adding links to it.
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*
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* @author Oliver Gierke
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*/
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@XmlRootElement
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public class Resource<T> extends ResourceSupport {
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@JsonUnwrapped
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private final T content;
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/**
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* Creates an empty {@link Resource}.
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*/
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protected Resource() {
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this.content = null;
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}
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/**
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* Creates a new {@link Resource} with the given content and {@link Link}s (optional).
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*
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* @param content must not be {@literal null}.
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* @param links the links to add to the {@link Resource}.
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*/
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public Resource(T content, Link... links) {
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this(content, Arrays.asList(links));
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}
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/**
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* Creates a new {@link Resource} with the given content and {@link Link}s.
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*
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* @param content must not be {@literal null}.
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* @param links the links to add to the {@link Resource}.
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*/
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public Resource(T content, Iterable<Link> links) {
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Assert.notNull(content, "Content must not be null!");
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this.content = content;
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this.add(links);
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}
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/**
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* Returns the underlying entity.
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*
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* @return the content
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*/
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public T getContent() {
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return content;
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}
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/*
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* (non-Javadoc)
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* @see org.springframework.hateoas.ResourceSupport#toString()
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*/
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@Override
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public String toString() {
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return String.format("Resource { content: %s, %s }", getContent(), super.toString());
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}
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/*
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* (non-Javadoc)
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* @see org.springframework.hateoas.ResourceSupport#equals(java.lang.Object)
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*/
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@Override
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public boolean equals(Object obj) {
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if (this == obj) {
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return true;
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}
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if (obj == null || !obj.getClass().equals(getClass())) {
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return false;
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}
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Resource<?> that = (Resource<?>) obj;
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boolean contentEqual = this.content == null ? that.content == null : this.content.equals(that.content);
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return contentEqual ? super.equals(obj) : false;
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}
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/*
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* (non-Javadoc)
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* @see org.springframework.hateoas.ResourceSupport#hashCode()
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*/
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@Override
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public int hashCode() {
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int result = super.hashCode();
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result += content == null ? 0 : 17 * content.hashCode();
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return result;
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}
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}
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