api/src/main/java/org/apache/sling/cms/publication/IsPublishableResourceType.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.sling.cms.publication;

import java.util.Optional;
import java.util.function.Predicate;

import org.apache.sling.api.resource.Resource;
import org.apache.sling.cms.CMSConstants;
import org.apache.sling.cms.ResourceTree;

/**
 * A predicate for evaluating if a resource is a publishable resource type.
 */
public class IsPublishableResourceType implements Predicate<ResourceTree> {

    @Override
    public boolean test(ResourceTree rt) {
        return Optional.ofNullable(rt).map(ResourceTree::getResource).map(Resource::getResourceType)
                .map(type -> CMSConstants.NT_FILE.equals(type) || CMSConstants.NT_PAGE.equals(type)).orElse(false);
    }
}