mirror of
https://github.com/crawler-commons/crawler-commons
synced 2024-06-01 21:36:04 +02:00
297 lines
8.3 KiB
Java
297 lines
8.3 KiB
Java
/**
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package crawlercommons.sitemaps;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.util.Date;
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import java.util.Locale;
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/**
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* The SitemapUrl class represents a URL found in a Sitemap.
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*
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* @author fmccown
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*/
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public class SiteMapURL {
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private static Logger LOG = LoggerFactory.getLogger(SiteMapURL.class);
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public static double defaultPriority = 0.5;
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/**
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* Allowed change frequencies
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*/
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public enum ChangeFrequency {
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ALWAYS, HOURLY, DAILY, WEEKLY, MONTHLY, YEARLY, NEVER
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}
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;
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/**
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* URL found in Sitemap (required)
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*/
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private URL url;
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/**
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* When URL was last modified (optional)
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*/
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private Date lastModified;
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/**
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* How often the URL changes (optional)
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*/
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private ChangeFrequency changeFreq;
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/**
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* Value between [0.0 - 1.0] (optional)
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*/
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private double priority = defaultPriority;
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/**
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* could be false, if URL isn't found under base path as indicated here:
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* http://www.sitemaps.org/protocol.html#location *
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*/
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private boolean valid;
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public SiteMapURL(String url, boolean valid) {
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setUrl(url);
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setValid(valid);
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}
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public SiteMapURL(URL url, boolean valid) {
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setUrl(url);
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setValid(valid);
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}
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public SiteMapURL(String url, String lastModified, String changeFreq, String priority, boolean valid) {
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this(url, valid);
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setLastModified(lastModified);
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setChangeFrequency(changeFreq);
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setPriority(priority);
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}
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public SiteMapURL(URL url, Date lastModified, ChangeFrequency changeFreq, double priority, boolean valid) {
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this(url, valid);
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setLastModified(lastModified);
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setChangeFrequency(changeFreq);
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setPriority(priority);
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}
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/**
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* Return the URL.
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*
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* @return URL
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*/
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public URL getUrl() {
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return url;
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}
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/**
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* Set the URL.
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*
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* @param url
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*/
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public void setUrl(URL url) {
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this.url = url;
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}
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/**
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* Set the URL.
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*
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* @param url
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* In case of Malformed URL, the current url in this instance
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* will be set to NULL
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*/
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public void setUrl(String url) {
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try {
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this.url = new URL(url);
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} catch (MalformedURLException e) {
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LOG.error("Bad url: [{}], Exception: {}", url, e.toString());
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this.url = null;
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}
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}
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/**
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* Return when this URL was last modified.
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*
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* @return last modified date
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*/
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public Date getLastModified() {
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return lastModified;
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}
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/**
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* Set when this URL was last modified.
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*
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* @param lastModified
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*/
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public void setLastModified(String lastModified) {
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this.lastModified = SiteMap.convertToDate(lastModified);
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}
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/**
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* Set when this URL was last modified.
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*
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* @param lastModified
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*/
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public void setLastModified(Date lastModified) {
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this.lastModified = lastModified;
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}
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/**
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* Return this URL's priority (a value between [0.0 - 1.0]).
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*
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* @return URL's priority (a value between [0.0 - 1.0])
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*/
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public double getPriority() {
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return priority;
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}
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/**
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* Set the URL's priority to a value between [0.0 - 1.0] (Default Priority
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* is used if the given priority is out of range).
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*
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* @param priority
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*/
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public void setPriority(double priority) {
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// Ensure proper value
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if (priority < 0.0 || priority > 1.0) {
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this.priority = defaultPriority;
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LOG.warn("Can't set the priority to {}, Priority should be between 0 to 1, reverting to default priority value: {}", priority, defaultPriority);
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} else {
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this.priority = priority;
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}
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}
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/**
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* Set the URL's priority to a value between [0.0 - 1.0] (Default Priority
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* is used if the given priority missing or is out of range).
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*
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* @param priorityStr
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*/
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public void setPriority(String priorityStr) {
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try {
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if (priorityStr == null || priorityStr.isEmpty()) {
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LOG.debug("This item contains no priority (which is ok as text sitemaps don't have priority for example), defaulting priority value to: {}", defaultPriority);
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this.priority = defaultPriority;
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} else {
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setPriority(Double.parseDouble(priorityStr));
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}
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} catch (NumberFormatException nfe) {
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LOG.warn("Can't set the priority, because I can't understand this value: {}, Priority should be between 0 to 1, reverting to default priority value: {}", priorityStr, defaultPriority);
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this.priority = defaultPriority;
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}
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}
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/**
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* Return the URL's change frequency
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*
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* @return the URL's change frequency
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*/
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public ChangeFrequency getChangeFrequency() {
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return changeFreq;
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}
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/**
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* Set the URL's change frequency
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*
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* @param changeFreq
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*/
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public void setChangeFrequency(ChangeFrequency changeFreq) {
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this.changeFreq = changeFreq;
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}
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/**
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* Set the URL's change frequency In case of a bad ChangeFrequency, the
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* current frequency in this instance will be set to NULL
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*
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* @param changeFreq
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*/
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public void setChangeFrequency(String changeFreq) {
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if (changeFreq != null) {
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changeFreq = changeFreq.toUpperCase(Locale.getDefault());
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if (changeFreq.contains("ALWAYS")) {
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this.changeFreq = ChangeFrequency.ALWAYS;
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} else if (changeFreq.contains("HOURLY")) {
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this.changeFreq = ChangeFrequency.HOURLY;
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} else if (changeFreq.contains("DAILY")) {
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this.changeFreq = ChangeFrequency.DAILY;
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} else if (changeFreq.contains("WEEKLY")) {
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this.changeFreq = ChangeFrequency.WEEKLY;
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} else if (changeFreq.contains("MONTHLY")) {
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this.changeFreq = ChangeFrequency.MONTHLY;
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} else if (changeFreq.contains("YEARLY")) {
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this.changeFreq = ChangeFrequency.YEARLY;
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} else if (changeFreq.contains("NEVER")) {
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this.changeFreq = ChangeFrequency.NEVER;
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} else {
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this.changeFreq = null;
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}
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}
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}
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/**
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* Valid means that it follows the official guidelines that the siteMapURL
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* must be under the base url
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*/
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public void setValid(boolean valid) {
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this.valid = valid;
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}
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/**
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* Is the siteMapURL under the base url ?
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*/
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public boolean isValid() {
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return valid;
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}
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@Override
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public boolean equals(Object o) {
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if (this == o)
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return true;
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if (o == null || getClass() != o.getClass())
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return false;
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SiteMapURL that = (SiteMapURL) o;
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if (!url.equals(that.url))
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return false;
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return true;
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}
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@Override
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public int hashCode() {
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return url.hashCode();
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}
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@Override
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public String toString() {
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StringBuilder sb = new StringBuilder();
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sb.append("url = \"").append(url).append("\"");
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sb.append(", lastMod = ").append((lastModified == null) ? "null" : SiteMap.getFullDateFormat().format(lastModified));
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sb.append(", changeFreq = ").append(changeFreq);
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sb.append(", priority = ").append(priority);
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return sb.toString();
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}
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} |