/**
* Copyright 2005-2014 Restlet
*
* The contents of this file are subject to the terms of one of the following
* open source licenses: Apache 2.0 or or EPL 1.0 (the "Licenses"). You can
* select the license that you prefer but you may not use this file except in
* compliance with one of these Licenses.
*
* You can obtain a copy of the Apache 2.0 license at
* http://www.opensource.org/licenses/apache-2.0
*
* You can obtain a copy of the EPL 1.0 license at
* http://www.opensource.org/licenses/eclipse-1.0
*
* See the Licenses for the specific language governing permissions and
* limitations under the Licenses.
*
* Alternatively, you can obtain a royalty free commercial license with less
* limitations, transferable or non-transferable, directly at
* http://restlet.com/products/restlet-framework
*
* Restlet is a registered trademark of Restlet S.A.S.
*/
package org.restlet.ext.wadl;
import static org.restlet.ext.wadl.WadlRepresentation.APP_NAMESPACE;
import java.util.List;
import java.util.Map;
import org.restlet.data.Reference;
import org.restlet.ext.xml.XmlWriter;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
/**
* Allows description of links between representations and resources.
*
* @author Jerome Louvel
*/
public class LinkInfo extends DocumentedInfo {
/**
* Identifies the relationship of the resource identified by the link to the
* resource whose representation the link is embedded in.
*/
private String relationship;
/**
* Defines the capabilities of the resource that the link identifies.
*/
private Reference resourceType;
/**
* Identifies the relationship of the resource whose representation the link
* is embedded in to the resource identified by the link.
*/
private String reverseRelationship;
/**
* Constructor.
*/
public LinkInfo() {
super();
}
/**
* Constructor with a single documentation element.
*
* @param documentation
* A single documentation element.
*/
public LinkInfo(DocumentationInfo documentation) {
super(documentation);
}
/**
* Constructor with a list of documentation elements.
*
* @param documentations
* The list of documentation elements.
*/
public LinkInfo(List<DocumentationInfo> documentations) {
super(documentations);
}
/**
* Constructor with a single documentation element.
*
* @param documentation
* A single documentation element.
*/
public LinkInfo(String documentation) {
super(documentation);
}
/**
* Returns the relationship attribute value.
*
* @return The relationship attribute value.
*/
public String getRelationship() {
return this.relationship;
}
/**
* Returns the reference to the resource type of the linked resource.
*
* @return The reference to the resource type of the linked resource.
*/
public Reference getResourceType() {
return this.resourceType;
}
/**
* Returns the reverse relationship attribute value.
*
* @return The reverse relationship attribute value.
*/
public String getReverseRelationship() {
return this.reverseRelationship;
}
/**
* Sets the relationship attribute value.
*
* @param relationship
* The relationship attribute value.
*/
public void setRelationship(String relationship) {
this.relationship = relationship;
}
/**
* Sets the reference to the resource type of the linked resource.
*
* @param resourceType
* The reference to the resource type of the linked resource.
*/
public void setResourceType(Reference resourceType) {
this.resourceType = resourceType;
}
/**
* Sets the reverse relationship attribute value.
*
* @param reverseRelationship
* The reverse relationship attribute value.
*/
public void setReverseRelationship(String reverseRelationship) {
this.reverseRelationship = reverseRelationship;
}
@Override
public void updateNamespaces(Map<String, String> namespaces) {
namespaces.putAll(resolveNamespaces());
}
/**
* Writes the current object as an XML element using the given SAX writer.
*
* @param writer
* The SAX writer.
* @throws SAXException
*/
public void writeElement(XmlWriter writer) throws SAXException {
final AttributesImpl attributes = new AttributesImpl();
if ((getRelationship() != null) && !getRelationship().equals("")) {
attributes.addAttribute("", "rel", null, "xs:token",
getRelationship());
}
if ((getReverseRelationship() != null)
&& !getReverseRelationship().equals("")) {
attributes.addAttribute("", "rev", null, "xs:token",
getReverseRelationship());
}
if ((getResourceType() != null)
&& (getResourceType().toString() != null)) {
attributes.addAttribute("", "resource_type", null, "xs:anyURI",
getResourceType().toString());
}
if (getDocumentations().isEmpty()) {
writer.emptyElement(APP_NAMESPACE, "link", null, attributes);
} else {
writer.startElement(APP_NAMESPACE, "link", null, attributes);
for (final DocumentationInfo documentationInfo : getDocumentations()) {
documentationInfo.writeElement(writer);
}
writer.endElement(APP_NAMESPACE, "link");
}
}
}