diff options
Diffstat (limited to 'branches/sca-java-1.x/samples/feed-aggregator')
2 files changed, 361 insertions, 350 deletions
diff --git a/branches/sca-java-1.x/samples/feed-aggregator/src/test/java/feed/FeedAggregatorTest.java b/branches/sca-java-1.x/samples/feed-aggregator/src/test/java/feed/FeedAggregatorTest.java deleted file mode 100644 index 16b16bf49f..0000000000 --- a/branches/sca-java-1.x/samples/feed-aggregator/src/test/java/feed/FeedAggregatorTest.java +++ /dev/null @@ -1,350 +0,0 @@ -/*
- * 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 feed;
-
-import java.io.IOException;
-import java.io.Reader;
-import java.text.SimpleDateFormat;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Date;
-import java.util.List;
-
-import junit.framework.Assert;
-import org.junit.AfterClass;
-import org.junit.BeforeClass;
-import org.junit.Test;
-
-import org.apache.tuscany.sca.host.embedded.SCADomain;
-
-import org.apache.abdera.Abdera;
-import org.apache.abdera.i18n.iri.IRI;
-import org.apache.abdera.factory.Factory;
-import org.apache.abdera.model.Base;
-import org.apache.abdera.model.Content;
-import org.apache.abdera.model.Entry;
-import org.apache.abdera.model.Feed;
-import org.apache.abdera.model.Document;
-import org.apache.abdera.model.Collection;
-import org.apache.abdera.protocol.Response.ResponseType;
-import org.apache.abdera.protocol.client.AbderaClient;
-import org.apache.abdera.protocol.client.ClientResponse;
-import org.apache.abdera.protocol.client.RequestOptions;
-import org.apache.abdera.util.EntityTag;
-import org.apache.abdera.writer.Writer;
-import org.apache.abdera.writer.WriterFactory;
-import org.apache.abdera.parser.Parser;
-
-/**
- * Tests use of server provided feed entity tags for Atom binding in Tuscany.
- * Tests conditional gets (e.g. get if-none-match) or conditional posts (post if-match)
- * using entity tags and last modified entries in headers.
- * Uses the SCA provided Provider composite to act as a server.
- * Uses the Abdera provided Client to act as a client.
- */
-public class FeedAggregatorTest {
- public final static String providerURI = "http://localhost:8083/atomAggregator";
- protected static SCADomain scaProviderDomain;
- protected static Abdera abdera;
- protected static AbderaClient client;
- protected static Parser abderaParser;
- protected static String eTag;
- protected static Date lastModified;
- protected static long contentLength;
- protected static int numberEntries;
- protected static final SimpleDateFormat dateFormat = new SimpleDateFormat( "EEE, dd MMM yyyy HH:mm:ss Z" ); // RFC 822 date time
-
- @BeforeClass
- public static void init() throws Exception {
- try {
- System.out.println(">>>FeedAggregatorTest.init");
- scaProviderDomain = SCADomain.newInstance("FeedAggregator.composite");
- abdera = new Abdera();
- client = new AbderaClient(abdera);
- abderaParser = Abdera.getNewParser();
- } catch ( Throwable e ) {
- System.out.println( e );
- e.printStackTrace();
- }
- }
-
- @AfterClass
- public static void destroy() throws Exception {
- System.out.println(">>>FeedAggregatorTest.destroy");
- scaProviderDomain.close();
- }
-
- @Test
- public void testPrelim() throws Exception {
- Assert.assertNotNull(scaProviderDomain);
- Assert.assertNotNull( client );
- }
-
- @Test
- public void testFeedBasics() throws Exception {
- System.out.println(">>>FeedAggregatorTest.testFeedBasics");
- RequestOptions opts = new RequestOptions();
- // Normal feed request
- ClientResponse res = client.get(providerURI, opts);
- Assert.assertNotNull(res);
- try {
- // Asser feed provided since no predicates
- Assert.assertEquals(200, res.getStatus());
- Assert.assertEquals(ResponseType.SUCCESS, res.getType());
- // AtomTestCaseUtils.printResponseHeaders( "Feed response headers:", " ", res );
-
- // Perform other tests on feed.
- contentLength = getContentLength( res );
- System.out.println( "FeedAggregatorTest.testFeedBasics full contentLength=" + contentLength );
-
- Document<Feed> doc = res.getDocument();
- Assert.assertNotNull( doc );
- Feed feed = doc.getRoot();
- Assert.assertNotNull( feed );
-
- // printFeed( "Feed values", " ", feed );
- // RFC 4287 requires non-null id, title, updated elements
- Assert.assertNotNull( feed.getId() );
- Assert.assertNotNull( feed.getTitle() );
- Assert.assertNotNull( feed.getUpdated() );
-
- eTag = res.getHeader("ETag");
- Assert.assertNotNull( eTag );
- lastModified = res.getLastModified();
- Assert.assertNotNull( lastModified );
-
- numberEntries = getEntryCount( feed );
- System.out.println( "FeedAggregatorTest.testFeedBasics number entries=" + numberEntries );
-
- // printFeed( "Aggregated Feed Contents:", " ", feed );
- // System.out.println( "FeedAggregatorTest.testFeedBasics feed=" + feed );
- // printResponseHeaders( "Aggregated Feed response headers:", " ", res );
- // System.out.println("Aggregated Feed response body:");
- // prettyPrint(abdera, res.getDocument());
- // printEntryUpdates( "Aggregated Feed feed updates", " ", feed );
- } finally {
- res.release();
- }
- }
-
- @Test
- public void testUnmodifiedGetIfModified() throws Exception {
- System.out.println(">>>FeedAggregatorTest.testFeedUnmodifiedGetIfModified");
- // Feed request with predicates
- RequestOptions opts = new RequestOptions();
- final String contentType = "application/atom+xml";
- opts.setContentType(contentType);
- opts.setHeader( "If-Modified-Since", dateFormat.format( new Date( 0 ) ));
-
- ClientResponse res = client.get(providerURI, opts);
- Assert.assertNotNull(res);
- try {
- // Should return 200 - Feed provided since feed is changed.
- Assert.assertEquals(200, res.getStatus());
- Assert.assertEquals(ResponseType.SUCCESS, res.getType());
-
- String thisETag = res.getHeader("ETag");
- Assert.assertNotNull( thisETag );
- Date thisLastModified = res.getLastModified();
- Assert.assertNotNull( thisLastModified );
-
- // Entry count and body size should be equal to basic request
- long thisContentLength = getContentLength( res );
-
- Document<Feed> doc = res.getDocument();
- Assert.assertNotNull( doc );
- Feed feed = doc.getRoot();
- Assert.assertNotNull( feed );
- int thisNumberEntries = getEntryCount( feed );
- // System.out.println( "FeedAggregatorTest.UnmodifiedGetIfModified number entries=" + numberEntries + ", this number entries=" + thisNumberEntries ) ;
- } finally {
- res.release();
- }
- }
-
- @Test
- public void testUnmodifiedGetIfUnModified() throws Exception {
- System.out.println(">>>FeedAggregatorTest.testFeedUnmodifiedGetIfUnModified");
- // Feed request with predicates
- RequestOptions opts = new RequestOptions();
- final String contentType = "application/atom+xml";
- opts.setContentType(contentType);
- opts.setHeader( "If-Unmodified-Since", dateFormat.format( new Date( 0 ) ));
-
- ClientResponse res = client.get(providerURI, opts);
- Assert.assertNotNull(res);
- try {
- // Should return 304 - Feed not provided since feed is modified since.
- Assert.assertEquals(304, res.getStatus());
-
- // Entry count and body size should be equal to basic request
- long thisContentLength = getContentLength( res );
- System.out.println( "FeedAggregatorTest.UnModifiedGetIfUnModified saved " + (contentLength - thisContentLength) + " bytes of network traffic due to caching.");
- } finally {
- res.release();
- }
- }
-
- /** Print feed vital fields. */
- public static void printFeed( String title, String indent, Feed feed ) {
- if ( feed == null ) {
- System.out.println( title + " feed is null");
- return;
- }
-
- System.out.println( title );
- System.out.println( indent + "id=" + feed.getId() );
- System.out.println( indent + "title=" + feed.getTitle() );
- System.out.println( indent + "updated=" + feed.getUpdated() );
- System.out.println( indent + "author=" + feed.getAuthor() );
- System.out.println( indent + "self link=" + feed.getSelfLink() );
- Collection collection = feed.getCollection();
- if ( collection == null ) {
- System.out.println( indent + "collection=null" );
- } else {
- System.out.println( indent + "collection=" + collection );
- }
- }
-
- /* Print headers of request. */
- public static void printRequestHeaders( String title, String indent, RequestOptions request ) {
- System.out.println( title );
- if ( request == null ) {
- System.out.println( indent + " request is null");
- return;
- }
- String [] headerNames = request.getHeaderNames();
- for ( String headerName: headerNames) {
- String header = request.getHeader(headerName);
- System.out.println( indent + " header name,value=" + headerName + "," + header );
- }
- }
-
- /* Print headers of response. */
- public static void printResponseHeaders( String title, String indent, ClientResponse response ) {
- System.out.println( title );
- if ( response == null ) {
- System.out.println( indent + " response is null");
- return;
- }
- String [] headerNames = response.getHeaderNames();
- for ( String headerName: headerNames) {
- String header = response.getHeader(headerName);
- System.out.println( indent + " header name,value=" + headerName + "," + header );
- }
-
- }
-
- /** Pretty print the document body. */
- public static void prettyPrint(Abdera abdera, Base doc) throws IOException {
- WriterFactory factory = abdera.getWriterFactory();
- Writer writer = factory.getWriter("prettyxml");
- writer.writeTo(doc, System.out);
- System.out.println();
- }
-
- /** Print the updated elements of the feed entries. */
- public static void printEntryUpdates( String title, String indent, Feed feed ) {
- if ( feed == null ) {
- System.out.println( title + " feed is null");
- return;
- }
-
- System.out.println( title );
- List<Entry> entries = feed.getEntries();
- if ( entries == null ) {
- System.out.println( indent + " null entries");
- }
- System.out.println( indent + "entries size=" + entries.size());
-
- int i = 0;
- for ( Entry entry: entries ) {
- String entryTitle = entry.getTitle();
- if (( entryTitle != null ) && ( entryTitle.length() > 20 ))
- entryTitle = entryTitle.substring( 0, 20 );
- // System.out.println( indent + i++ + ": title=\"" + entryTitle +
- // "\", updated=" + entry.getUpdated() + ", published=" + entry.getPublished() );
- System.out.println( indent + i++ + ": title=\"" + entryTitle +
- "\", updated=" + entry.getUpdated() );
- }
- }
-
- /** Get the length of the response body content. */
- public static long getContentLength( ClientResponse response ) {
- // getContentLenght returns -1
- // contentLength = response.getContentLength();
- try {
- Reader reader = response.getReader();
- long actualSkip = reader.skip( Long.MAX_VALUE );
- return actualSkip;
- } catch ( IOException e ) {
- }
- return -1L;
- }
-
- /** Get a count of entries in the feed. */
- public static int getEntryCount( Feed feed ) {
- if ( feed == null ) {
- return 0;
- }
-
- List<Entry> entries = feed.getEntries();
- if ( entries == null ) {
- return 0;
- }
- return entries.size();
- }
-
- /** Given a feed, determine the median point of the entries.
- * Use the updated field of the entries to determine median.
- * @param feed
- * @return
- */
- public static Date getUpdatedMedian( Feed feed ) {
- Date sentinal = null;
- if ( feed == null ) {
- return sentinal;
- }
-
- List<Entry> entries = feed.getEntries();
- if ( entries == null ) {
- return sentinal;
- }
- int size = entries.size();
- if( size == 0 ) {
- return sentinal;
- }
- // System.out.println( "getUpdatedMedian entries size=" + entries.size());
- ArrayList<Date> updates = new ArrayList<Date>( size );
-
- for ( Entry entry: entries ) {
- Date entryUpdated = entry.getUpdated();
- if ( entryUpdated == null ) {
- entryUpdated = new Date( 0 );
- }
- updates.add( entryUpdated );
- }
- Collections.sort( updates );
- // System.out.println( "getUpdatedMedian entry min update=" + updates.get( 0 ));
- // System.out.println( "getUpdatedMedian entry max update=" + updates.get( size - 1 ));
- Date median = updates.get( size/2 );
- // System.out.println( "getUpdatedMedian entry max median=" + median );
- return median;
- }
-}
diff --git a/branches/sca-java-1.x/samples/feed-aggregator/src/test/java/feed/FeedAggregatorTestCase.java b/branches/sca-java-1.x/samples/feed-aggregator/src/test/java/feed/FeedAggregatorTestCase.java new file mode 100644 index 0000000000..ab8877cadf --- /dev/null +++ b/branches/sca-java-1.x/samples/feed-aggregator/src/test/java/feed/FeedAggregatorTestCase.java @@ -0,0 +1,361 @@ +/*
+ * 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 feed;
+
+import java.io.IOException;
+import java.io.Reader;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Date;
+import java.util.List;
+
+import junit.framework.Assert;
+
+import org.apache.abdera.Abdera;
+import org.apache.abdera.model.Base;
+import org.apache.abdera.model.Collection;
+import org.apache.abdera.model.Document;
+import org.apache.abdera.model.Entry;
+import org.apache.abdera.model.Feed;
+import org.apache.abdera.parser.Parser;
+import org.apache.abdera.protocol.Response.ResponseType;
+import org.apache.abdera.protocol.client.AbderaClient;
+import org.apache.abdera.protocol.client.ClientResponse;
+import org.apache.abdera.protocol.client.RequestOptions;
+import org.apache.abdera.writer.Writer;
+import org.apache.abdera.writer.WriterFactory;
+import org.apache.tuscany.sca.host.embedded.SCADomain;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Ignore;
+import org.junit.Test;
+
+/**
+ * Tests use of server provided feed entity tags for Atom binding in Tuscany.
+ * Tests conditional gets (e.g. get if-none-match) or conditional posts (post
+ * if-match) using entity tags and last modified entries in headers. Uses the
+ * SCA provided Provider composite to act as a server. Uses the Abdera provided
+ * Client to act as a client.
+ */
+public class FeedAggregatorTestCase {
+ public final static String providerURI = "http://localhost:8083/atomAggregator";
+ protected static SCADomain scaProviderDomain;
+ protected static Abdera abdera;
+ protected static AbderaClient client;
+ protected static Parser abderaParser;
+ protected static String eTag;
+ protected static Date lastModified;
+ protected static long contentLength;
+ protected static int numberEntries;
+ protected static final SimpleDateFormat dateFormat = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss Z"); // RFC822 date time
+
+ @BeforeClass
+ public static void init() throws Exception {
+ try {
+ System.out.println(">>>FeedAggregatorTest.init");
+ scaProviderDomain = SCADomain.newInstance("FeedAggregator.composite");
+ abdera = new Abdera();
+ client = new AbderaClient(abdera);
+ abderaParser = Abdera.getNewParser();
+ } catch (Throwable e) {
+ System.out.println(e);
+ e.printStackTrace();
+ }
+ }
+
+ @AfterClass
+ public static void destroy() throws Exception {
+ System.out.println(">>>FeedAggregatorTest.destroy");
+ scaProviderDomain.close();
+ }
+
+ @Test
+ public void testPrelim() throws Exception {
+ Assert.assertNotNull(scaProviderDomain);
+ Assert.assertNotNull(client);
+ }
+
+ // @Test
+ @Ignore("TUSCANY-2937")
+ public void testFeedBasics() throws Exception {
+ System.out.println(">>>FeedAggregatorTest.testFeedBasics");
+ RequestOptions opts = new RequestOptions();
+ // Normal feed request
+ ClientResponse res = client.get(providerURI, opts);
+ Assert.assertNotNull(res);
+ try {
+ // Asser feed provided since no predicates
+ Assert.assertEquals(200, res.getStatus());
+ Assert.assertEquals(ResponseType.SUCCESS, res.getType());
+ // AtomTestCaseUtils.printResponseHeaders( "Feed response headers:",
+ // " ", res );
+
+ // Perform other tests on feed.
+ contentLength = getContentLength(res);
+ System.out.println("FeedAggregatorTest.testFeedBasics full contentLength=" + contentLength);
+
+ Document<Feed> doc = res.getDocument();
+ Assert.assertNotNull(doc);
+ Feed feed = doc.getRoot();
+ Assert.assertNotNull(feed);
+
+ // printFeed( "Feed values", " ", feed );
+ // RFC 4287 requires non-null id, title, updated elements
+ Assert.assertNotNull(feed.getId());
+ Assert.assertNotNull(feed.getTitle());
+ Assert.assertNotNull(feed.getUpdated());
+
+ eTag = res.getHeader("ETag");
+ Assert.assertNotNull(eTag);
+ lastModified = res.getLastModified();
+ Assert.assertNotNull(lastModified);
+
+ numberEntries = getEntryCount(feed);
+ System.out.println("FeedAggregatorTest.testFeedBasics number entries=" + numberEntries);
+
+ // printFeed( "Aggregated Feed Contents:", " ", feed );
+ // System.out.println( "FeedAggregatorTest.testFeedBasics feed=" +
+ // feed );
+ // printResponseHeaders( "Aggregated Feed response headers:", " ",
+ // res );
+ // System.out.println("Aggregated Feed response body:");
+ // prettyPrint(abdera, res.getDocument());
+ // printEntryUpdates( "Aggregated Feed feed updates", " ", feed );
+ } finally {
+ res.release();
+ }
+ }
+
+ //@Test
+ @Ignore("TUSCANY-2937")
+ public void testUnmodifiedGetIfModified() throws Exception {
+ System.out.println(">>>FeedAggregatorTest.testFeedUnmodifiedGetIfModified");
+ // Feed request with predicates
+ RequestOptions opts = new RequestOptions();
+ final String contentType = "application/atom+xml";
+ opts.setContentType(contentType);
+ opts.setHeader("If-Modified-Since", dateFormat.format(new Date(0)));
+
+ ClientResponse res = client.get(providerURI, opts);
+ Assert.assertNotNull(res);
+ try {
+ // Should return 200 - Feed provided since feed is changed.
+ Assert.assertEquals(200, res.getStatus());
+ Assert.assertEquals(ResponseType.SUCCESS, res.getType());
+
+ String thisETag = res.getHeader("ETag");
+ Assert.assertNotNull(thisETag);
+ Date thisLastModified = res.getLastModified();
+ Assert.assertNotNull(thisLastModified);
+
+ // Entry count and body size should be equal to basic request
+ long thisContentLength = getContentLength(res);
+
+ Document<Feed> doc = res.getDocument();
+ Assert.assertNotNull(doc);
+ Feed feed = doc.getRoot();
+ Assert.assertNotNull(feed);
+ int thisNumberEntries = getEntryCount(feed);
+ // System.out.println(
+ // "FeedAggregatorTest.UnmodifiedGetIfModified number entries=" +
+ // numberEntries + ", this number entries=" + thisNumberEntries ) ;
+ } finally {
+ res.release();
+ }
+ }
+
+ @Test
+ public void testUnmodifiedGetIfUnModified() throws Exception {
+ System.out.println(">>>FeedAggregatorTest.testFeedUnmodifiedGetIfUnModified");
+ // Feed request with predicates
+ RequestOptions opts = new RequestOptions();
+ final String contentType = "application/atom+xml";
+ opts.setContentType(contentType);
+ opts.setHeader("If-Unmodified-Since", dateFormat.format(new Date(0)));
+
+ ClientResponse res = client.get(providerURI, opts);
+ Assert.assertNotNull(res);
+ try {
+ // Should return 304 - Feed not provided since feed is modified
+ // since.
+ Assert.assertEquals(304, res.getStatus());
+
+ // Entry count and body size should be equal to basic request
+ long thisContentLength = getContentLength(res);
+ System.out
+ .println("FeedAggregatorTest.UnModifiedGetIfUnModified saved " + (contentLength - thisContentLength)
+ + " bytes of network traffic due to caching.");
+ } finally {
+ res.release();
+ }
+ }
+
+ /** Print feed vital fields. */
+ public static void printFeed(String title, String indent, Feed feed) {
+ if (feed == null) {
+ System.out.println(title + " feed is null");
+ return;
+ }
+
+ System.out.println(title);
+ System.out.println(indent + "id=" + feed.getId());
+ System.out.println(indent + "title=" + feed.getTitle());
+ System.out.println(indent + "updated=" + feed.getUpdated());
+ System.out.println(indent + "author=" + feed.getAuthor());
+ System.out.println(indent + "self link=" + feed.getSelfLink());
+ Collection collection = feed.getCollection();
+ if (collection == null) {
+ System.out.println(indent + "collection=null");
+ } else {
+ System.out.println(indent + "collection=" + collection);
+ }
+ }
+
+ /* Print headers of request. */
+ public static void printRequestHeaders(String title, String indent, RequestOptions request) {
+ System.out.println(title);
+ if (request == null) {
+ System.out.println(indent + " request is null");
+ return;
+ }
+ String[] headerNames = request.getHeaderNames();
+ for (String headerName : headerNames) {
+ String header = request.getHeader(headerName);
+ System.out.println(indent + " header name,value=" + headerName + "," + header);
+ }
+ }
+
+ /* Print headers of response. */
+ public static void printResponseHeaders(String title, String indent, ClientResponse response) {
+ System.out.println(title);
+ if (response == null) {
+ System.out.println(indent + " response is null");
+ return;
+ }
+ String[] headerNames = response.getHeaderNames();
+ for (String headerName : headerNames) {
+ String header = response.getHeader(headerName);
+ System.out.println(indent + " header name,value=" + headerName + "," + header);
+ }
+
+ }
+
+ /** Pretty print the document body. */
+ public static void prettyPrint(Abdera abdera, Base doc) throws IOException {
+ WriterFactory factory = abdera.getWriterFactory();
+ Writer writer = factory.getWriter("prettyxml");
+ writer.writeTo(doc, System.out);
+ System.out.println();
+ }
+
+ /** Print the updated elements of the feed entries. */
+ public static void printEntryUpdates(String title, String indent, Feed feed) {
+ if (feed == null) {
+ System.out.println(title + " feed is null");
+ return;
+ }
+
+ System.out.println(title);
+ List<Entry> entries = feed.getEntries();
+ if (entries == null) {
+ System.out.println(indent + " null entries");
+ }
+ System.out.println(indent + "entries size=" + entries.size());
+
+ int i = 0;
+ for (Entry entry : entries) {
+ String entryTitle = entry.getTitle();
+ if ((entryTitle != null) && (entryTitle.length() > 20))
+ entryTitle = entryTitle.substring(0, 20);
+ // System.out.println( indent + i++ + ": title=\"" + entryTitle +
+ // "\", updated=" + entry.getUpdated() + ", published=" +
+ // entry.getPublished() );
+ System.out.println(indent + i++ + ": title=\"" + entryTitle + "\", updated=" + entry.getUpdated());
+ }
+ }
+
+ /** Get the length of the response body content. */
+ public static long getContentLength(ClientResponse response) {
+ // getContentLenght returns -1
+ // contentLength = response.getContentLength();
+ try {
+ Reader reader = response.getReader();
+ long actualSkip = reader.skip(Long.MAX_VALUE);
+ return actualSkip;
+ } catch (IOException e) {
+ }
+ return -1L;
+ }
+
+ /** Get a count of entries in the feed. */
+ public static int getEntryCount(Feed feed) {
+ if (feed == null) {
+ return 0;
+ }
+
+ List<Entry> entries = feed.getEntries();
+ if (entries == null) {
+ return 0;
+ }
+ return entries.size();
+ }
+
+ /**
+ * Given a feed, determine the median point of the entries. Use the updated
+ * field of the entries to determine median.
+ *
+ * @param feed
+ * @return
+ */
+ public static Date getUpdatedMedian(Feed feed) {
+ Date sentinal = null;
+ if (feed == null) {
+ return sentinal;
+ }
+
+ List<Entry> entries = feed.getEntries();
+ if (entries == null) {
+ return sentinal;
+ }
+ int size = entries.size();
+ if (size == 0) {
+ return sentinal;
+ }
+ // System.out.println( "getUpdatedMedian entries size=" +
+ // entries.size());
+ ArrayList<Date> updates = new ArrayList<Date>(size);
+
+ for (Entry entry : entries) {
+ Date entryUpdated = entry.getUpdated();
+ if (entryUpdated == null) {
+ entryUpdated = new Date(0);
+ }
+ updates.add(entryUpdated);
+ }
+ Collections.sort(updates);
+ // System.out.println( "getUpdatedMedian entry min update=" +
+ // updates.get( 0 ));
+ // System.out.println( "getUpdatedMedian entry max update=" +
+ // updates.get( size - 1 ));
+ Date median = updates.get(size / 2);
+ // System.out.println( "getUpdatedMedian entry max median=" + median );
+ return median;
+ }
+}
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