D-Net

package eu.dnetlib.data.collector.plugins;

import java.io.BufferedInputStream;

import java.util.Iterator;

import java.util.List;

import org.apache.commons.lang.StringUtils;

import com.google.common.collect.Lists;

import eu.dnetlib.data.collector.plugin.CollectorPlugin;

import eu.dnetlib.data.collector.rmi.CollectorServiceException;

import eu.dnetlib.data.collector.rmi.InterfaceDescriptor;

import eu.dnetlib.miscutils.iterators.xml.XMLIterator;

public abstract class AbstractSplittedRecordPlugin implements CollectorPlugin {

	@Override

	public Iterable<String> collect(final InterfaceDescriptor interfaceDescriptor, final String fromDate, final String untilDate) throws CollectorServiceException {

		final String baseUrl = interfaceDescriptor.getBaseUrl();

		final String element = interfaceDescriptor.getParams().get("splitOnElement");

		if (StringUtils.isBlank(baseUrl)) throw new CollectorServiceException("Param 'baseurl' is null or empty");

		if (StringUtils.isBlank(element)) throw new CollectorServiceException("Param 'splitOnElement' is null or empty");

		final BufferedInputStream bis = getBufferedInputStream(baseUrl);

		return new Iterable<String>() {

			@Override

			public Iterator<String> iterator() {

				return new XMLIterator(element, bis);

			}

		};

	}

	@Override

	public List<String> listNameParameters() {

		return Lists.newArrayList("splitOnElement");

	}

	abstract protected BufferedInputStream getBufferedInputStream(final String baseUrl) throws CollectorServiceException;

}