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Person.java
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/* Copyright (c) 2008 Google Inc.
*
* 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.google.gdata.data;
import com.google.gdata.util.common.xml.XmlNamespace;
import com.google.gdata.util.common.xml.XmlWriter;
import com.google.gdata.client.CoreErrorDomain;
import com.google.gdata.util.Namespaces;
import com.google.gdata.util.ParseException;
import com.google.gdata.util.XmlParser;
import org.xml.sax.Attributes;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
/**
* Person type used for feed and entry authors and contributors. It may also
* be used by services' custom elements.
*
*
*/
public class Person extends ExtensionPoint implements IPerson {
/**
* Class constructor.
*/
public Person() {}
/**
* Constructs a new Person instance with the specified name.
*/
public Person(String name) {
if (name == null)
throw new NullPointerException("Name must have a value");
this.name = name;
}
/**
* Constructs a new Person instance with the specified name, URI,
* and email address.
*/
public Person(String name, String uri, String email) {
this(name);
this.uri = uri;
this.email = email;
}
/** Human-readable name. */
protected String name;
public String getName() { return name; }
public void setName(String v) { name = v; }
/** Language of name. Derived from the current state of {@code xml:lang}. */
protected String nameLang;
public String getNameLang() { return nameLang; }
public void setNameLang(String v) { nameLang = v; }
/** URI associated with the person. */
protected String uri;
public String getUri() { return uri; }
public void setUri(String v) { uri = v; }
/** Email address. */
protected String email;
public String getEmail() { return email; }
public void setEmail(String v) { email = v; }
/**
* Generates XML.
* <p>
* Designed to be used by types that reuse the standard Atom person type.
*
* @param extProfile
* extension profile
*
* @param w
* output writer
*
* @param elementNamespace
* namespace for XML element
*
* @param elementName
* name of XML element
*
* @param attributes
* additional attributes
*
* @throws IOException
*/
public void generate(ExtensionProfile extProfile,
XmlWriter w,
XmlNamespace elementNamespace,
String elementName,
Collection<XmlWriter.Attribute> attributes)
throws IOException {
generateStartElement(w, elementNamespace, elementName, attributes, null);
if (name != null && name.trim().length() > 0) {
ArrayList<XmlWriter.Attribute> attrs;
if (nameLang != null) {
attrs = new ArrayList<XmlWriter.Attribute>(1);
attrs.add(new XmlWriter.Attribute("xml:lang", nameLang));
} else {
attrs = null;
}
w.simpleElement(Namespaces.atomNs, "name", attrs, name);
}
if (uri != null && uri.trim().length() > 0) {
w.simpleElement(Namespaces.atomNs, "uri", null, uri);
}
if (email != null && email.trim().length() > 0) {
w.simpleElement(Namespaces.atomNs, "email", null, email);
}
// Invoke ExtensionPoint.
generateExtensions(w, extProfile);
w.endElement(elementNamespace, elementName);
}
/**
* Generates XML in the Atom format.
*
* @param extProfile
* extension profile
*
* @param w
* output writer
*
* @param elementName
* Atom element name
*
* @throws IOException
*/
public void generateAtom(ExtensionProfile extProfile,
XmlWriter w,
String elementName) throws IOException {
generate(extProfile, w, Namespaces.atomNs, elementName, null);
}
/**
* Generates XML in the RSS format.
*
* @param w
* output writer
*
* @param elementName
* RSS element name
*
* @throws IOException
*/
public void generateRss(XmlWriter w,
String elementName) throws IOException {
String text = new String();
if (email != null) { text += email; }
if (name != null) {
if (email != null) { text += " ("; }
text += name;
if (email != null) { text += ")"; }
}
w.simpleElement(Namespaces.rssNs, elementName, null, text);
}
@Override
public XmlParser.ElementHandler getHandler(ExtensionProfile extProfile,
String namespace, String localName, Attributes attrs) {
return new AtomHandler(extProfile);
}
/** Parses XML in the Atom format. */
public class AtomHandler extends ExtensionPoint.ExtensionHandler {
public AtomHandler(ExtensionProfile extProfile) {
super(extProfile, Person.this.getClass());
}
@Override
public XmlParser.ElementHandler getChildHandler(String namespace,
String localName,
Attributes attrs)
throws ParseException, IOException {
if (namespace.equals(Namespaces.atom)) {
if (localName.equals("name")) {
return new NameHandler();
} else if (localName.equals("uri")) {
return new UriHandler();
} else if (localName.equals("email")) {
return new EmailHandler();
}
} else {
return super.getChildHandler(namespace, localName, attrs);
}
return null;
}
class NameHandler extends XmlParser.ElementHandler {
@Override
public void processEndElement() throws ParseException {
if (name != null) {
throw new ParseException(
CoreErrorDomain.ERR.duplicateName);
}
if (value == null) {
throw new ParseException(
CoreErrorDomain.ERR.nameValueRequired);
}
name = value;
nameLang = xmlLang;
}
}
class UriHandler extends XmlParser.ElementHandler {
@Override
public void processEndElement() throws ParseException {
if (uri != null) {
throw new ParseException(
CoreErrorDomain.ERR.duplicateUri);
}
if (value == null) {
throw new ParseException(
CoreErrorDomain.ERR.uriValueRequired);
}
uri = value;
}
}
class EmailHandler extends XmlParser.ElementHandler {
@Override
public void processEndElement() throws ParseException {
if (email != null) {
throw new ParseException(
CoreErrorDomain.ERR.duplicateEmail);
}
if (value == null) {
throw new ParseException(
CoreErrorDomain.ERR.emailValueRequired);
}
email = value;
}
}
}
}