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* http://glassfish.java.net/public/CDDL+GPL_1_1.html
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* language governing permissions and limitations under the License.
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* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
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* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
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*/
package org.glassfish.jersey.examples.feedcombiner.model;
import java.io.Serializable;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import java.util.function.Function;
import java.util.stream.Collectors;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlRootElement;
import org.hibernate.validator.constraints.NotEmpty;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author Petr Bouda (petr.bouda at oracle.com)
*/
@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public final class CombinedFeed implements Serializable {
private static final long serialVersionUID = 2176919801739913480L;
private static Logger LOG = LoggerFactory.getLogger(CombinedFeed.class.getName());
private String id;
// UnmodifiableList
@NotEmpty(message = "At least one valid URL must be in the request.")
private List<URL> urls;
@Min(value = 0, message = "Refresh period must be equal or higher than 0.")
private long refreshPeriod;
// UnmodifiableList
private List<FeedEntry> feedEntries;
@NotNull(message = "Title may not be null.")
private String title;
@NotNull(message = "Description may not be null.")
private String description;
// for purposes of JAXB
private CombinedFeed() {
}
private CombinedFeed(String id, List<URL> urls, long refreshPeriod,
List<FeedEntry> feedEntries, String title, String description) {
this.id = id;
this.urls = urls;
this.refreshPeriod = refreshPeriod;
this.feedEntries = feedEntries;
this.title = title;
this.description = description;
}
public String getId() {
return id;
}
public long getRefreshPeriod() {
return refreshPeriod;
}
public List<URL> getUrls() {
if (urls == null) {
return Collections.unmodifiableList(Collections.emptyList());
}
return urls;
}
public List<FeedEntry> getFeedEntries() {
if (feedEntries == null) {
return Collections.unmodifiableList(Collections.emptyList());
}
return feedEntries;
}
public String getTitle() {
return title;
}
public String getDescription() {
return description;
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder("CombinedFeed{");
sb.append("id='").append(id).append('\'');
sb.append(", urls=").append(urls);
sb.append(", refreshPeriod=").append(refreshPeriod);
sb.append(", feedEntries=").append(feedEntries);
sb.append(", title='").append(title).append('\'');
sb.append(", description='").append(description).append('\'');
sb.append('}');
return sb.toString();
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final CombinedFeed feed = (CombinedFeed) obj;
return Objects.equals(this.id, feed.id)
&& Objects.equals(this.title, feed.title)
&& Objects.equals(this.description, feed.description)
&& Objects.equals(this.refreshPeriod, feed.refreshPeriod)
&& Objects.deepEquals(this.urls, feed.urls)
&& Objects.deepEquals(this.feedEntries, feed.feedEntries);
}
@Override
public int hashCode() {
return Objects.hash(id, title, description, refreshPeriod, urls, feedEntries);
}
public static class CombinedFeedBuilder {
private static final Function<String, URL> mapper = new UrlMapper();
private String id;
private List<URL> urls = Collections.unmodifiableList(new ArrayList<>());
private String title;
private String description;
private long refreshPeriod;
private List<FeedEntry> feedEntries = Collections.unmodifiableList(new ArrayList<>());
public CombinedFeedBuilder(String id, String... urls) {
this(id, createUrlList(urls));
}
public CombinedFeedBuilder(String id, List<URL> urls) {
this.id = id;
this.urls = Collections.unmodifiableList(urls);
}
public static CombinedFeedBuilder of(CombinedFeed feed) {
CombinedFeedBuilder builder = new CombinedFeedBuilder(feed.getId(), feed.getUrls());
builder.title = feed.getTitle();
builder.description = feed.getDescription();
builder.refreshPeriod = feed.getRefreshPeriod();
builder.feedEntries = feed.getFeedEntries();
return builder;
}
private static List<URL> createUrlList(String... urls) {
return Arrays.stream(urls)
.map(mapper)
.filter(Objects::nonNull)
.collect(Collectors.toList());
}
public CombinedFeedBuilder id(String id) {
this.id = id;
return this;
}
public CombinedFeedBuilder urls(List<URL> urls) {
if (urls == null) {
this.urls = Collections.unmodifiableList(new ArrayList<>());
} else {
this.urls = Collections.unmodifiableList(urls);
}
return this;
}
public CombinedFeedBuilder title(String title) {
this.title = title;
return this;
}
public CombinedFeedBuilder description(String description) {
this.description = description;
return this;
}
public CombinedFeedBuilder refreshPeriod(long refreshPeriod) {
this.refreshPeriod = refreshPeriod;
return this;
}
public CombinedFeedBuilder feedEntries(List<FeedEntry> feedEntries) {
if (feedEntries == null) {
this.feedEntries = Collections.unmodifiableList(new ArrayList<>());
} else {
this.feedEntries = Collections.unmodifiableList(feedEntries);
}
return this;
}
public CombinedFeed build() {
return new CombinedFeed(id, urls, refreshPeriod, feedEntries, title, description);
}
}
private static final class UrlMapper implements Function<String, URL> {
@Override
public URL apply(String url) {
try {
return new URL(url);
} catch (MalformedURLException mue) {
LOG.warn("It is not possible to create URL object from:" + url, mue);
}
return null;
}
}
}