org.ambraproject.rhino.content.xml.AssetXml.java Source code

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Here is the source code for org.ambraproject.rhino.content.xml.AssetXml.java

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/*
 * Copyright (c) 2017 Public Library of Science
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

package org.ambraproject.rhino.content.xml;

import com.google.common.base.Strings;
import org.ambraproject.rhino.identity.Doi;
import org.ambraproject.rhino.model.article.AssetMetadata;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Node;

import java.util.Objects;

/**
 * Contains a whole article as an NLM-format XML document and extracts metadata for one asset.
 */
public class AssetXml extends AbstractArticleXml<AssetMetadata> {

    private static final Logger log = LoggerFactory.getLogger(AssetXml.class);

    private final Doi assetId;

    /**
     * The Node passed to this constructor may be a full document or just the asset node. In the former case, this class
     * will search the document for the identified asset node. The latter case is more efficient.
     *
     * @param xml
     * @param assetId
     */
    public AssetXml(Node xml, Doi assetId) {
        super(xml);
        this.assetId = Objects.requireNonNull(assetId);
    }

    @Override
    public AssetMetadata build() throws XmlContentException {
        String doi = assetId.getName();
        String title = "";
        String description = "";

        if (xml.getLocalName().equalsIgnoreCase(DECISION_LETTER)) {
            title = Strings.nullToEmpty(readString("front-stub/title-group/article-title"));
            description = Strings.nullToEmpty(readString("@article-type"));
        } else {
            title = Strings.nullToEmpty(readString("child::label"));
            Node captionNode = readNode("child::caption");
            description = Strings.nullToEmpty(getXmlFromNode(captionNode));
        }

        return new AssetMetadata(doi, title, description);
    }

}