JsonHomeBuilder.java

/*
 * Copyright 2012 Guido Steinacker
 *
 * 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 de.otto.jsonhome.model;

import java.net.URI;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

/**
 * A builder used to build JsonHome instances.
 */
public final class JsonHomeBuilder {

    private final Map<URI, ResourceLink> resources = new HashMap<URI, ResourceLink>();

    private JsonHomeBuilder() {
    }

    public static JsonHomeBuilder jsonHomeBuilder() {
        return new JsonHomeBuilder();
    }

    public static JsonHomeBuilder copyFrom(final JsonHome jsonHome) {
        return jsonHomeBuilder().mergeWith(jsonHome);
    }

    public JsonHomeBuilder mergeWith(final JsonHome jsonHome) {
        resources.putAll(jsonHome.getResources());
        return this;
    }

    public JsonHomeBuilder addResource(final ResourceLink resource) {
        this.resources.put(resource.getLinkRelationType(), resource);
        return this;
    }

    public JsonHomeBuilder addResources(final Collection<ResourceLink> resources) {
        for (final ResourceLink resource : resources) {
            this.resources.put(resource.getLinkRelationType(), resource);
        }
        return this;
    }

    public JsonHome build() {
        return JsonHome.jsonHome(resources.values());
    }
}