/*
* Copyright 2004 Sun Microsystems, Inc.
* Copyright 2011 ROME Team
*
* Licensed 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 com.rometools.rome.feed;
import java.io.Serializable;
import java.util.List;
import org.jdom2.Element;
import com.rometools.rome.feed.impl.ObjectBean;
import com.rometools.rome.feed.module.Extendable;
import com.rometools.rome.feed.module.Module;
import com.rometools.rome.feed.module.impl.ModuleUtils;
import com.rometools.utils.Lists;
/**
* Parent class of the RSS (Channel) and Atom (Feed) feed beans.
* <p>
* NOTE: We don't like this class at this package level but the alternative would have been a
* proliferation of packages (one more level to hold atom and rss package with this class just in
* that package).
* <p>
* The format of the 'type' property must be [FEEDNAME]_[FEEDVERSION] with the FEEDNAME in lower
* case, for example: rss_0.9, rss_0.93, atom_0.3
* <p>
*
* @author Alejandro Abdelnur
*
*/
public abstract class WireFeed implements Cloneable, Serializable, Extendable {
private static final long serialVersionUID = 1L;
private final ObjectBean objBean;
private String feedType;
private String encoding;
private String styleSheet;
private List<Module> modules;
private List<Element> foreignMarkup;
/**
* Default constructor, for bean cloning purposes only.
*/
protected WireFeed() {
objBean = new ObjectBean(this.getClass(), this);
}
/**
* Creates a feed for a given type.
*
* @param type of the feed to create.
*
*/
protected WireFeed(final String type) {
this();
feedType = type;
}
/**
* Creates a deep 'bean' clone of the object.
*
* @return a clone of the object.
* @throws CloneNotSupportedException thrown if an element of the object cannot be cloned.
*
*/
@Override
public Object clone() throws CloneNotSupportedException {
return objBean.clone();
}
/**
* Indicates whether some other object is "equal to" this one as defined by the Object equals()
* method.
*
* @param other he reference object with which to compare.
* @return <b>true</b> if 'this' object is equal to the 'other' object.
*
*/
@Override
public boolean equals(final Object other) {
if (other == null) {
return false;
}
if (!(other instanceof WireFeed)) {
return false;
}
// can't use foreign markup in equals, due to JDOM equals impl
final List<Element> fm = getForeignMarkup();
setForeignMarkup(((WireFeed) other).getForeignMarkup());
final boolean ret = objBean.equals(other);
// restore foreign markup
setForeignMarkup(fm);
return ret;
}
/**
* Returns a hashcode value for the object.
* <p>
* It follows the contract defined by the Object hashCode() method.
* <p>
*
* @return the hashcode of the bean object.
*
*/
@Override
public int hashCode() {
return objBean.hashCode();
}
/**
* Returns the String representation for the object.
* <p>
*
* @return String representation for the object.
*
*/
@Override
public String toString() {
return objBean.toString();
}
/**
* Sets the feedType of a the feed. <b>Do not use</b>, for bean cloning purposes only.
* <p>
*
* @param feedType the feedType of the feed.
*
*/
public void setFeedType(final String feedType) {
this.feedType = feedType;
}
/**
* Returns the type of the feed.
*
* @return the type of the feed.
*/
public String getFeedType() {
return feedType;
}
/**
* Returns the charset encoding of a the feed.
* <p>
* This property is not set by feed parsers. But it is used by feed generators to set the
* encoding in the XML prolog.
* <p>
*
* @return the charset encoding of the feed.
*
*/
public String getEncoding() {
return encoding;
}
/**
* Sets the charset encoding of a the feed.
* <p>
* This property is not set by feed parsers. But it is used by feed generators to set the
* encoding in the XML prolog.
* <p>
*
* @param encoding the charset encoding of the feed.
*
*/
public void setEncoding(final String encoding) {
this.encoding = encoding;
}
/**
* Returns the channel modules.
* <p>
*
* @return a list of ModuleImpl elements with the channel modules, an empty list if none.
*
*/
@Override
public List<Module> getModules() {
return modules = Lists.createWhenNull(modules);
}
/**
* Sets the channel modules.
* <p>
*
* @param modules the list of ModuleImpl elements with the channel modules to set, an empty list
* or <b>null</b> if none.
*
*/
@Override
public void setModules(final List<Module> modules) {
this.modules = modules;
}
/**
* Returns the module identified by a given URI.
* <p>
*
* @param uri the URI of the ModuleImpl.
* @return The module with the given URI, <b>null</b> if none.
*/
@Override
public Module getModule(final String uri) {
return ModuleUtils.getModule(modules, uri);
}
/**
* Returns foreign markup found at channel level.
* <p>
*
* @return Opaque object to discourage use
*
*/
public List<Element> getForeignMarkup() {
return foreignMarkup = Lists.createWhenNull(foreignMarkup);
}
/**
* Sets foreign markup found at channel level.
* <p>
*
* @param foreignMarkup Opaque object to discourage use
*
*/
public void setForeignMarkup(final List<Element> foreignMarkup) {
this.foreignMarkup = foreignMarkup;
}
/**
* URL of XSL-Stylesheet.
*
* @since 2.0.0
* @return styleSheet URL or {@code null}
*/
public String getStyleSheet() {
return styleSheet;
}
/**
* URL of XSL-Stylesheet.
*
* @since 2.0.0
* @param styleSheet URL or {@code null}
*/
public void setStyleSheet(final String styleSheet) {
this.styleSheet = styleSheet;
}
}