/**
* Copyright Microsoft Corporation
*
* 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.microsoft.windowsazure.services.media.entityoperations;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URLEncoder;
import java.security.InvalidParameterException;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.namespace.QName;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import com.microsoft.windowsazure.services.media.implementation.content.Constants;
import com.microsoft.windowsazure.services.media.implementation.content.MediaUriType;
/**
* Generic implementation of $link operation of two entities.
*/
public class EntityLinkOperation extends DefaultActionOperation {
/** The primary entity set. */
private final String primaryEntitySet;
/** The primary entity id. */
private final String primaryEntityId;
/** The secondary entity set. */
private final String secondaryEntitySet;
/** The secondary entity uri. */
private final URI secondaryEntityUri;
/** The jaxb context. */
private final JAXBContext jaxbContext;
/** The marshaller. */
private final Marshaller marshaller;
/** The document builder. */
private final DocumentBuilder documentBuilder;
/** The document builder factory. */
private final DocumentBuilderFactory documentBuilderFactory;
/**
* Instantiates a new entity link operation.
*
* @param primaryEntitySet
* the primary entity set
* @param primaryEntityId
* the primary entity id
* @param secondaryEntitySet
* the secondary entity set
* @param secondaryEntityUri
* the secondary entity uri
*/
public EntityLinkOperation(String primaryEntitySet, String primaryEntityId,
String secondaryEntitySet, URI secondaryEntityUri) {
super();
this.primaryEntitySet = primaryEntitySet;
this.primaryEntityId = primaryEntityId;
this.secondaryEntitySet = secondaryEntitySet;
this.secondaryEntityUri = secondaryEntityUri;
try {
jaxbContext = JAXBContext.newInstance(MediaUriType.class);
} catch (JAXBException e) {
throw new RuntimeException(e);
}
try {
marshaller = jaxbContext.createMarshaller();
} catch (JAXBException e) {
throw new RuntimeException(e);
}
documentBuilderFactory = DocumentBuilderFactory.newInstance();
try {
documentBuilder = documentBuilderFactory.newDocumentBuilder();
} catch (ParserConfigurationException e) {
throw new RuntimeException(e);
}
}
/*
* (non-Javadoc)
*
* @see
* com.microsoft.windowsazure.services.media.entities.EntityDeleteOperation
* #getUri()
*/
@Override
public String getUri() {
String escapedEntityId;
try {
escapedEntityId = URLEncoder.encode(primaryEntityId, "UTF-8");
} catch (UnsupportedEncodingException e) {
throw new InvalidParameterException(
"UTF-8 encoding is not supported.");
}
return String.format("%s('%s')/$links/%s", primaryEntitySet,
escapedEntityId, secondaryEntitySet);
}
/*
* (non-Javadoc)
*
* @see com.microsoft.windowsazure.services.media.entityoperations.
* DefaultActionOperation#getVerb()
*/
@Override
public String getVerb() {
return "POST";
}
/*
* (non-Javadoc)
*
* @see com.microsoft.windowsazure.services.media.entityoperations.
* DefaultActionOperation#getRequestContents()
*/
@Override
public Object getRequestContents() {
MediaUriType mediaUriType = new MediaUriType();
mediaUriType.setUri(getProxyData().getServiceUri().toString()
+ this.secondaryEntityUri.toString());
JAXBElement<MediaUriType> mediaUriTypeElement = new JAXBElement<MediaUriType>(
new QName(Constants.ODATA_DATA_NS, "uri"), MediaUriType.class,
mediaUriType);
Document document = documentBuilder.newDocument();
document.setXmlStandalone(true);
try {
marshaller.marshal(mediaUriTypeElement, document);
} catch (JAXBException e) {
throw new RuntimeException(e);
}
return document;
}
}