collect(final ApiDescriptor api, final AggregatorReport report) throws CollectorException {
+ final String baseUrl = api.getBaseUrl();
+ final String resumptionType = api.getParams().get("resumptionType");
+ final String resumptionParam = api.getParams().get("resumptionParam");
+ final String resumptionXpath = api.getParams().get("resumptionXpath");
+ final String resultTotalXpath = api.getParams().get("resultTotalXpath");
+ final String resultFormatParam = api.getParams().get("resultFormatParam");
+ final String resultFormatValue = api.getParams().get("resultFormatValue");
+ final String resultSizeParam = api.getParams().get("resultSizeParam");
+ final String resultSizeValue = (StringUtils.isBlank(api.getParams().get("resultSizeValue"))) ? "100"
+ : api.getParams().get("resultSizeValue");
+ final String queryParams = api.getParams().get("queryParams");
+ final String entityXpath = api.getParams().get("entityXpath");
+ final String authMethod = api.getParams().get("authMethod");
+ final String authToken = api.getParams().get("authToken");
+
+ if (StringUtils.isBlank(baseUrl)) {
+ throw new CollectorException("Param 'baseUrl' is null or empty");
+ }
+ if (StringUtils.isBlank(resumptionType)) {
+ throw new CollectorException("Param 'resumptionType' is null or empty");
+ }
+ if (StringUtils.isBlank(resumptionParam)) {
+ throw new CollectorException("Param 'resumptionParam' is null or empty");
+ }
+ if (StringUtils.isBlank(resultFormatValue)) {
+ throw new CollectorException("Param 'resultFormatValue' is null or empty");
+ }
+ if (StringUtils.isBlank(queryParams)) {
+ throw new CollectorException("Param 'queryParams' is null or empty");
+ }
+ if (StringUtils.isBlank(entityXpath)) {
+ throw new CollectorException("Param 'entityXpath' is null or empty");
+ }
+
+ RestIterator it = new RestIterator(
+ getClientParams(),
+ baseUrl,
+ resumptionType,
+ resumptionParam,
+ resumptionXpath,
+ resultTotalXpath,
+ resultFormatParam,
+ resultFormatValue,
+ resultSizeParam,
+ resultSizeValue,
+ queryParams,
+ entityXpath,
+ authMethod,
+ authToken);
+
+ return StreamSupport
+ .stream(
+ Spliterators.spliteratorUnknownSize(it, Spliterator.ORDERED), false);
+ }
+
+ public HttpClientParams getClientParams() {
+ return clientParams;
+ }
+}
diff --git a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/collection/plugin/rest/RestIterator.java b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/collection/plugin/rest/RestIterator.java
new file mode 100644
index 000000000..b728293d5
--- /dev/null
+++ b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/collection/plugin/rest/RestIterator.java
@@ -0,0 +1,442 @@
+
+package eu.dnetlib.dhp.collection.plugin.rest;
+
+import java.io.InputStream;
+import java.io.StringWriter;
+import java.io.UnsupportedEncodingException;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+import java.util.Iterator;
+import java.util.Queue;
+import java.util.concurrent.PriorityBlockingQueue;
+
+import javax.xml.transform.OutputKeys;
+import javax.xml.transform.Transformer;
+import javax.xml.transform.TransformerConfigurationException;
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.transform.stream.StreamResult;
+import javax.xml.xpath.*;
+
+import org.apache.commons.httpclient.HttpMethod;
+import org.apache.commons.io.IOUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.http.HttpHeaders;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.InputSource;
+
+import eu.dnetlib.dhp.collection.CollectorException;
+import eu.dnetlib.dhp.collection.HttpClientParams;
+import eu.dnetlib.dhp.collection.JsonUtils;
+
+/**
+ * log.debug(...) equal to log.trace(...) in the application-logs
+ *
+ * known bug: at resumptionType 'discover' if the (resultTotal % resultSizeValue) == 0 the collecting fails -> change the resultSizeValue
+ *
+ * @author Jochen Schirrwagen, Aenne Loehden, Andreas Czerniak
+ * @date 2020-04-09
+ *
+ */
+public class RestIterator implements Iterator {
+
+ private static final Log log = LogFactory.getLog(RestIterator.class);
+
+ private HttpClientParams clientParams;
+
+ private final String BASIC = "basic";
+
+ private JsonUtils jsonUtils;
+
+ private String baseUrl;
+ private String resumptionType;
+ private String resumptionParam;
+ private String resultFormatValue;
+ private String queryParams;
+ private int resultSizeValue;
+ private int resumptionInt = 0; // integer resumption token (first record to harvest)
+ private int resultTotal = -1;
+ private String resumptionStr = Integer.toString(resumptionInt); // string resumption token (first record to harvest
+ // or token scanned from results)
+ private InputStream resultStream;
+ private Transformer transformer;
+ private XPath xpath;
+ private String query;
+ private XPathExpression xprResultTotalPath;
+ private XPathExpression xprResumptionPath;
+ private XPathExpression xprEntity;
+ private String queryFormat;
+ private String querySize;
+ private String authMethod;
+ private String authToken;
+ private final Queue recordQueue = new PriorityBlockingQueue();
+ private int discoverResultSize = 0;
+ private int pagination = 1;
+
+ /**
+ * RestIterator class
+ *
+ * compatible to version before 1.3.33
+ *
+ * @param baseUrl
+ * @param resumptionType
+ * @param resumptionParam
+ * @param resumptionXpath
+ * @param resultTotalXpath
+ * @param resultFormatParam
+ * @param resultFormatValue
+ * @param resultSizeParam
+ * @param resultSizeValueStr
+ * @param queryParams
+ * @param entityXpath
+ */
+ public RestIterator(
+ final HttpClientParams clientParams,
+ final String baseUrl,
+ final String resumptionType,
+ final String resumptionParam,
+ final String resumptionXpath,
+ final String resultTotalXpath,
+ final String resultFormatParam,
+ final String resultFormatValue,
+ final String resultSizeParam,
+ final String resultSizeValueStr,
+ final String queryParams,
+ final String entityXpath) {
+ this(clientParams, baseUrl, resumptionType, resumptionParam, resumptionXpath, resultTotalXpath,
+ resultFormatParam, resultFormatValue, resultSizeParam, resultSizeValueStr, queryParams, entityXpath, "",
+ "");
+ }
+
+ public RestIterator(
+ final HttpClientParams clientParams,
+ final String baseUrl,
+ final String resumptionType,
+ final String resumptionParam,
+ final String resumptionXpath,
+ final String resultTotalXpath,
+ final String resultFormatParam,
+ final String resultFormatValue,
+ final String resultSizeParam,
+ final String resultSizeValueStr,
+ final String queryParams,
+ final String entityXpath,
+ final String authMethod,
+ final String authToken,
+ final String resultOffsetParam) {
+ this(clientParams, baseUrl, resumptionType, resumptionParam, resumptionXpath, resultTotalXpath,
+ resultFormatParam, resultFormatValue, resultSizeParam, resultSizeValueStr, queryParams, entityXpath, "",
+ "");
+ }
+
+ /** RestIterator class
+ * compatible to version 1.3.33
+ */
+ public RestIterator(
+ final HttpClientParams clientParams,
+ final String baseUrl,
+ final String resumptionType,
+ final String resumptionParam,
+ final String resumptionXpath,
+ final String resultTotalXpath,
+ final String resultFormatParam,
+ final String resultFormatValue,
+ final String resultSizeParam,
+ final String resultSizeValueStr,
+ final String queryParams,
+ final String entityXpath,
+ final String authMethod,
+ final String authToken) {
+ this.clientParams = clientParams;
+ this.jsonUtils = new JsonUtils();
+ this.baseUrl = baseUrl;
+ this.resumptionType = resumptionType;
+ this.resumptionParam = resumptionParam;
+ this.resultFormatValue = resultFormatValue;
+ this.queryParams = queryParams;
+ this.resultSizeValue = Integer.valueOf(resultSizeValueStr);
+ this.authMethod = authMethod;
+ this.authToken = authToken;
+
+ queryFormat = StringUtils.isNotBlank(resultFormatParam) ? "&" + resultFormatParam + "=" + resultFormatValue
+ : "";
+ querySize = StringUtils.isNotBlank(resultSizeParam) ? "&" + resultSizeParam + "=" + resultSizeValueStr : "";
+
+ try {
+ initXmlTransformation(resultTotalXpath, resumptionXpath, entityXpath);
+ } catch (Exception e) {
+ throw new IllegalStateException("xml transformation init failed: " + e.getMessage());
+ }
+ initQueue();
+ }
+
+ private void initXmlTransformation(String resultTotalXpath, String resumptionXpath, String entityXpath)
+ throws TransformerConfigurationException, XPathExpressionException {
+ transformer = TransformerFactory.newInstance().newTransformer();
+ transformer.setOutputProperty(OutputKeys.INDENT, "yes");
+ transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "3");
+ xpath = XPathFactory.newInstance().newXPath();
+ xprResultTotalPath = xpath.compile(resultTotalXpath);
+ xprResumptionPath = xpath.compile(StringUtils.isBlank(resumptionXpath) ? "/" : resumptionXpath);
+ xprEntity = xpath.compile(entityXpath);
+ }
+
+ private void initQueue() {
+ query = baseUrl + "?" + queryParams + querySize + queryFormat;
+ }
+
+ private void disconnect() {
+ // TODO close inputstream
+ }
+
+ /*
+ * (non-Javadoc)
+ * @see java.util.Iterator#hasNext()
+ */
+ @Override
+ public boolean hasNext() {
+ if (recordQueue.isEmpty() && query.isEmpty()) {
+ disconnect();
+ return false;
+ } else {
+ return true;
+ }
+ }
+
+ /*
+ * (non-Javadoc)
+ * @see java.util.Iterator#next()
+ */
+ @Override
+ public String next() {
+ synchronized (recordQueue) {
+ while (recordQueue.isEmpty() && !query.isEmpty()) {
+ try {
+ log.debug("get Query: " + query);
+ query = downloadPage(query);
+ log.debug("next queryURL from downloadPage(): " + query);
+ } catch (CollectorException e) {
+ log.debug("CollectorPlugin.next()-Exception: " + e);
+ throw new RuntimeException(e);
+ }
+ }
+ return recordQueue.poll();
+ }
+ }
+
+ /*
+ * download page and return nextQuery
+ */
+ private String downloadPage(String query) throws CollectorException {
+ String resultJson;
+ String resultXml = "";
+ String emptyXml = resultXml + "<" + JsonUtils.wrapName + ">";
+ Node resultNode = null;
+ NodeList nodeList = null;
+ InputStream theHttpInputStream;
+
+ // check if cursor=* is initial set otherwise add it to the queryParam URL
+ if (resumptionType.equalsIgnoreCase("deep-cursor")) {
+ log.debug("check resumptionType deep-cursor and check cursor=*?" + query);
+ if (!query.contains("&cursor=")) {
+ query += "&cursor=*";
+ }
+ }
+
+ try {
+ URL qUrl = new URL(query);
+ log.debug("authMethod :" + authMethod);
+ if (this.authMethod == "bearer") {
+ log.trace("authMethod before inputStream: " + resultXml);
+ HttpURLConnection conn = (HttpURLConnection) qUrl.openConnection();
+ conn.setRequestProperty(HttpHeaders.AUTHORIZATION, "Bearer " + authToken);
+ conn.setRequestProperty(HttpHeaders.CONTENT_TYPE, "application/json");
+ conn.setRequestMethod("GET");
+ theHttpInputStream = conn.getInputStream();
+ } else if (BASIC.equalsIgnoreCase(this.authMethod)) {
+ log.trace("authMethod before inputStream: " + resultXml);
+ HttpURLConnection conn = (HttpURLConnection) qUrl.openConnection();
+ conn.setRequestProperty(HttpHeaders.AUTHORIZATION, "Basic " + authToken);
+ conn.setRequestProperty(HttpHeaders.ACCEPT, "application/xml");
+ conn.setRequestMethod("GET");
+ theHttpInputStream = conn.getInputStream();
+ } else {
+ theHttpInputStream = qUrl.openStream();
+ }
+
+ resultStream = theHttpInputStream;
+ if ("json".equalsIgnoreCase(resultFormatValue)) {
+ resultJson = IOUtils.toString(resultStream, "UTF-8");
+ resultXml = jsonUtils.convertToXML(resultJson);
+ resultStream = IOUtils.toInputStream(resultXml, "UTF-8");
+ }
+
+ if (!(emptyXml).equalsIgnoreCase(resultXml)) {
+ resultNode = (Node) xpath.evaluate("/", new InputSource(resultStream), XPathConstants.NODE);
+ nodeList = (NodeList) xprEntity.evaluate(resultNode, XPathConstants.NODESET);
+ log.debug("nodeList.length: " + nodeList.getLength());
+ for (int i = 0; i < nodeList.getLength(); i++) {
+ StringWriter sw = new StringWriter();
+ transformer.transform(new DOMSource(nodeList.item(i)), new StreamResult(sw));
+ recordQueue.add(sw.toString());
+ }
+ } else {
+ log.info("resultXml is equal with emptyXml");
+ }
+
+ resumptionInt += resultSizeValue;
+
+ String qUrlArgument = "";
+ switch (resumptionType.toLowerCase()) {
+ case "scan": // read of resumptionToken , evaluate next results, e.g. OAI, iterate over items
+ resumptionStr = xprResumptionPath.evaluate(resultNode);
+ break;
+
+ case "count": // begin at one step for all records, iterate over items
+ resumptionStr = Integer.toString(resumptionInt);
+ break;
+
+ case "discover": // size of result items unknown, iterate over items (for openDOAR - 201808)
+ if (resultSizeValue < 2) {
+ throw new CollectorException("Mode: discover, Param 'resultSizeValue' is less than 2");
+ }
+ qUrlArgument = qUrl.getQuery();
+ String[] arrayQUrlArgument = qUrlArgument.split("&");
+ int urlOldResumptionSize = 0;
+ for (String arrayUrlArgStr : arrayQUrlArgument) {
+ if (arrayUrlArgStr.startsWith(resumptionParam)) {
+ String[] resumptionKeyValue = arrayUrlArgStr.split("=");
+ if (isInteger(resumptionKeyValue[1])) {
+ urlOldResumptionSize = Integer.parseInt(resumptionKeyValue[1]);
+ log.debug("discover OldResumptionSize from Url (int): " + urlOldResumptionSize);
+ } else {
+ log.debug("discover OldResumptionSize from Url (str): " + resumptionKeyValue[1]);
+ }
+ }
+ }
+
+ if (((emptyXml).equalsIgnoreCase(resultXml))
+ || ((nodeList != null) && (nodeList.getLength() < resultSizeValue))) {
+ // resumptionStr = "";
+ if (nodeList != null) {
+ discoverResultSize += nodeList.getLength();
+ }
+ resultTotal = discoverResultSize;
+ } else {
+ resumptionStr = Integer.toString(resumptionInt);
+ resultTotal = resumptionInt + 1;
+ if (nodeList != null) {
+ discoverResultSize += nodeList.getLength();
+ }
+ }
+ log.debug("discoverResultSize: " + discoverResultSize);
+ break;
+
+ case "pagination":
+ case "page": // pagination, iterate over page numbers
+ pagination += 1;
+ if (nodeList != null) {
+ discoverResultSize += nodeList.getLength();
+ } else {
+ resultTotal = discoverResultSize;
+ pagination = discoverResultSize;
+ }
+ resumptionInt = pagination;
+ resumptionStr = Integer.toString(resumptionInt);
+ break;
+
+ case "deep-cursor": // size of result items unknown, iterate over items (for supporting deep cursor in
+ // solr)
+ // isn't relevant -- if (resultSizeValue < 2) {throw new CollectorServiceException("Mode:
+ // deep-cursor, Param 'resultSizeValue' is less than 2");}
+
+ resumptionStr = encodeValue(xprResumptionPath.evaluate(resultNode));
+ queryParams = queryParams.replace("&cursor=*", "");
+
+ // terminating if length of nodeList is 0
+ if ((nodeList != null) && (nodeList.getLength() < discoverResultSize)) {
+ resumptionInt += (nodeList.getLength() + 1 - resultSizeValue);
+ } else {
+ resumptionInt += (nodeList.getLength() - resultSizeValue); // subtract the resultSizeValue
+ // because the iteration is over
+ // real length and the
+ // resultSizeValue is added before
+ // the switch()
+ }
+
+ discoverResultSize = nodeList.getLength();
+
+ log
+ .debug(
+ "downloadPage().deep-cursor: resumptionStr=" + resumptionStr + " ; queryParams="
+ + queryParams + " resumptionLengthIncreased: " + resumptionInt);
+
+ break;
+
+ default: // otherwise: abort
+ // resultTotal = resumptionInt;
+ break;
+ }
+
+ } catch (Exception e) {
+ log.error(e);
+ throw new IllegalStateException("collection failed: " + e.getMessage());
+ }
+
+ try {
+ if (resultTotal == -1) {
+ resultTotal = Integer.parseInt(xprResultTotalPath.evaluate(resultNode));
+ if (resumptionType.toLowerCase().equals("page") && !BASIC.equalsIgnoreCase(authMethod)) {
+ resultTotal += 1;
+ } // to correct the upper bound
+ log.info("resultTotal was -1 is now: " + resultTotal);
+ }
+ } catch (Exception e) {
+ log.error(e);
+ throw new IllegalStateException("downloadPage resultTotal couldn't parse: " + e.getMessage());
+ }
+ log.debug("resultTotal: " + resultTotal);
+ log.debug("resInt: " + resumptionInt);
+ String nextQuery;
+ if (resumptionInt <= resultTotal) {
+ nextQuery = baseUrl + "?" + queryParams + querySize + "&" + resumptionParam + "=" + resumptionStr
+ + queryFormat;
+ } else {
+ nextQuery = "";
+ // if (resumptionType.toLowerCase().equals("deep-cursor")) { resumptionInt -= 1; } // correct the
+ // resumptionInt and prevent a NullPointer Exception at mdStore
+ }
+ log.debug("nextQueryUrl: " + nextQuery);
+ return nextQuery;
+ }
+
+ private boolean isInteger(String s) {
+ boolean isValidInteger = false;
+ try {
+ Integer.parseInt(s);
+
+ // s is a valid integer
+
+ isValidInteger = true;
+ } catch (NumberFormatException ex) {
+ // s is not an integer
+ }
+
+ return isValidInteger;
+ }
+
+ // Method to encode a string value using `UTF-8` encoding scheme
+ private String encodeValue(String value) {
+ try {
+ return URLEncoder.encode(value, StandardCharsets.UTF_8.toString());
+ } catch (UnsupportedEncodingException ex) {
+ throw new RuntimeException(ex.getCause());
+ }
+ }
+
+}
diff --git a/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/collection/plugin/rest/RestCollectorPluginTest.java b/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/collection/plugin/rest/RestCollectorPluginTest.java
new file mode 100644
index 000000000..648ac85fb
--- /dev/null
+++ b/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/collection/plugin/rest/RestCollectorPluginTest.java
@@ -0,0 +1,81 @@
+/**
+ *
+ */
+
+package eu.dnetlib.dhp.collection.plugin.rest;
+
+import java.util.HashMap;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.stream.Stream;
+
+import org.junit.jupiter.api.*;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import eu.dnetlib.dhp.aggregation.common.AggregatorReport;
+import eu.dnetlib.dhp.collection.ApiDescriptor;
+import eu.dnetlib.dhp.collection.CollectorException;
+import eu.dnetlib.dhp.collection.HttpClientParams;
+
+/**
+ * @author js, Andreas Czerniak
+ *
+ */
+public class RestCollectorPluginTest {
+
+ private static final Logger log = LoggerFactory.getLogger(RestCollectorPluginTest.class);
+
+ private String baseUrl = "https://share.osf.io/api/v2/search/creativeworks/_search";
+ private String resumptionType = "count";
+ private String resumptionParam = "from";
+ private String entityXpath = "//hits/hits";
+ private String resumptionXpath = "//hits";
+ private String resultTotalXpath = "//hits/total";
+ private String resultFormatParam = "format";
+ private String resultFormatValue = "json";
+ private String resultSizeParam = "size";
+ private String resultSizeValue = "10";
+ // private String query = "q=%28sources%3ASocArXiv+AND+type%3Apreprint%29";
+ private String query = "q=%28sources%3AengrXiv+AND+type%3Apreprint%29";
+ // private String query = "=(sources:engrXiv AND type:preprint)";
+
+ private String protocolDescriptor = "rest_json2xml";
+ private ApiDescriptor api = new ApiDescriptor();
+ private RestCollectorPlugin rcp;
+
+ @BeforeEach
+ public void setUp() {
+ HashMap params = new HashMap<>();
+ params.put("resumptionType", resumptionType);
+ params.put("resumptionParam", resumptionParam);
+ params.put("resumptionXpath", resumptionXpath);
+ params.put("resultTotalXpath", resultTotalXpath);
+ params.put("resultFormatParam", resultFormatParam);
+ params.put("resultFormatValue", resultFormatValue);
+ params.put("resultSizeParam", resultSizeParam);
+ params.put("resultSizeValue", resultSizeValue);
+ params.put("queryParams", query);
+ params.put("entityXpath", entityXpath);
+
+ api.setBaseUrl(baseUrl);
+ api.setParams(params);
+
+ rcp = new RestCollectorPlugin(new HttpClientParams());
+ }
+
+ @Disabled
+ @Test
+ public void test() throws CollectorException {
+ AtomicInteger i = new AtomicInteger(0);
+ final Stream stream = rcp.collect(api, new AggregatorReport());
+
+ stream.limit(200).forEach(s -> {
+ Assertions.assertTrue(s.length() > 0);
+ i.incrementAndGet();
+ log.info(s);
+ });
+
+ log.info("{}", i.intValue());
+ Assertions.assertTrue(i.intValue() > 0);
+ }
+}
diff --git a/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/collection/plugin/rest/RestIteratorTest.java b/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/collection/plugin/rest/RestIteratorTest.java
new file mode 100644
index 000000000..16604e0eb
--- /dev/null
+++ b/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/collection/plugin/rest/RestIteratorTest.java
@@ -0,0 +1,54 @@
+/**
+ *
+ */
+
+package eu.dnetlib.dhp.collection.plugin.rest;
+
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import eu.dnetlib.dhp.collection.HttpClientParams;
+
+/**
+ *
+ * @author js, Andreas Czerniak
+ * @date 2020-04-08
+ */
+public class RestIteratorTest {
+
+ private static final Logger log = LoggerFactory.getLogger(RestIteratorTest.class);
+
+ private String baseUrl = "https://share.osf.io/api/v2/search/creativeworks/_search";
+ private String resumptionType = "count";
+ private String resumptionParam = "from";
+ private String resumptionXpath = "";
+ private String resultTotalXpath = "//hits/total";
+ private String entityXpath = "//hits/hits";
+ private String resultFormatParam = "format";
+ private String resultFormatValue = "Json"; // Change from lowerCase to one UpperCase
+ private String resultSizeParam = "size";
+ private String resultSizeValue = "10";
+ private String authMethod = "";
+ private String authToken = "";
+ private String resultOffsetParam = "cursor";
+ private String query = "q=%28sources%3ASocArXiv+AND+type%3Apreprint%29";
+
+ @Disabled
+ @Test
+ public void test() {
+
+ HttpClientParams clientParams = new HttpClientParams();
+
+ final RestIterator iterator = new RestIterator(clientParams, baseUrl, resumptionType, resumptionParam,
+ resumptionXpath, resultTotalXpath, resultFormatParam, resultFormatValue, resultSizeParam, resultSizeValue,
+ query, entityXpath, authMethod, authToken, resultOffsetParam);
+ int i = 20;
+ while (iterator.hasNext() && i > 0) {
+ String result = iterator.next();
+
+ i--;
+ }
+ }
+}
diff --git a/pom.xml b/pom.xml
index 45bb6bf78..5c45fad5f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -461,6 +461,12 @@
${apache.poi.version}