org.dspace.xoai.services.impl.MetadataSearcherItems Maven / Gradle / Ivy

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/*
 * The contents of this file are subject to the license and copyright
 * detailed in the LICENSE and NOTICE files at the root of the source
 * tree and available online at
 *
 * http://www.dspace.org/license/
 */

package org.dspace.xoai.services.impl;

import org.dspace.xoai.model.xoai.Element;
import org.dspace.xoai.model.xoai.Field;
import org.dspace.xoai.model.xoai.MetadataItem;
import org.dspace.xoai.model.xoai.XOAIMetadata;
import org.dspace.xoai.services.api.MetadataSearch;

import java.util.ArrayList;
import java.util.List;

import static org.apache.commons.lang3.StringUtils.join;

/**
 * An implementation whose searches return {@link MetadataItem} elements.
 * Useful for when more information for each OAI metadata item is available (e.g., xml attributes like xml:lang).
 * @author mmalmeida
 *
 */
public class MetadataSearcherItems extends AbstractMetadataSearcher implements MetadataSearch {

	public MetadataSearcherItems(XOAIMetadata metadata) {
		super(metadata);
	}

	@Override
	protected void consume(List newNames, Element element) {
		 List names = new ArrayList(newNames);
	        names.add(element.getName());

	        if (!element.getFields().isEmpty()) {
	        	add(join(names, "."), element.getFields());
	        }

	        if (!element.getElements().isEmpty()) {
	            for (Element subElement : element.getElements()) {
	                consume(names, subElement);
	            }
	        }		
	}

	private void add(String name, List fields) {
		 if (!index.containsKey(name))
	            index.put(name, new ArrayList());
		 
		 MetadataItem newElement = new MetadataItem();
		 for (Field field : fields) {
			 if (field.getName() != null && !field.getName().equals(DEFAULT_FIELD)) {
				 newElement.addProperty(field.getName(),field.getValue());
			 }else{
				 newElement.setValue(field.getValue());
			 }
		 }
	        index.get(name).add(newElement);
		
	}

	@Override
	public MetadataItem findOne(String xoaiPath) {
		return super.findOne(xoaiPath);
	}

	@Override
	public List findAll(String xoaiPath) {
		return super.findAll(xoaiPath);
	}


	

	

}