package org.kuali.rice.ksb.api.registry;

 import java.io.Serializable;

 import java.util.Collection;

 import javax.xml.bind.annotation.XmlAccessType;

 import javax.xml.bind.annotation.XmlAccessorType;

 import javax.xml.bind.annotation.XmlAnyElement;

 import javax.xml.bind.annotation.XmlElement;

 import javax.xml.bind.annotation.XmlRootElement;

 import javax.xml.bind.annotation.XmlType;

 import org.kuali.rice.core.api.CoreConstants;

 import org.kuali.rice.core.api.mo.AbstractDataTransferObject;

 import org.kuali.rice.core.api.mo.ModelBuilder;

 import org.kuali.rice.ksb.api.bus.ServiceConfiguration;

 import org.w3c.dom.Element;

 /**

  * Immutable implementation of the {@link ServiceDescriptorContract} interface.

  * Includes a serialized XML representation of the {@link ServiceConfiguration}

  * for the service.

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  *

  */

 @XmlRootElement(name = ServiceDescriptor.Constants.ROOT_ELEMENT_NAME)

 @XmlAccessorType(XmlAccessType.NONE)

 @XmlType(name = ServiceDescriptor.Constants.TYPE_NAME, propOrder = {

     ServiceDescriptor.Elements.ID,

     ServiceDescriptor.Elements.DESCRIPTOR,

     CoreConstants.CommonElements.VERSION_NUMBER,

     CoreConstants.CommonElements.FUTURE_ELEMENTS

 })

 public final class ServiceDescriptor extends AbstractDataTransferObject

     implements ServiceDescriptorContract

 {

         private static final long serialVersionUID = 4555599272613878634L;

         @XmlElement(name = Elements.ID, required = false)

     private final String id;

     @XmlElement(name = Elements.DESCRIPTOR, required = false)

     private final String descriptor;

     @XmlElement(name = CoreConstants.CommonElements.VERSION_NUMBER, required = false)

     private final Long versionNumber;

     @SuppressWarnings("unused")

     @XmlAnyElement

     private final Collection<Element> _futureElements = null;

     /**

      * Private constructor used only by JAXB.

      * 

      */

     private ServiceDescriptor() {

         this.id = null;

         this.descriptor = null;

         this.versionNumber = null;

     }

     private ServiceDescriptor(Builder builder) {

         this.id = builder.getId();

         this.descriptor = builder.getDescriptor();

         this.versionNumber = builder.getVersionNumber();

     }

     @Override

     public String getId() {

         return this.id;

     }

     @Override

     public String getDescriptor() {

         return this.descriptor;

     }

     @Override

     public Long getVersionNumber() {

         return this.versionNumber;

     }

     /**

      * A builder which can be used to construct {@link ServiceDescriptor} instances.  Enforces the constraints of the {@link ServiceDescriptorContract}.

      * 

      */

     public final static class Builder

         implements Serializable, ModelBuilder, ServiceDescriptorContract

     {

                 private static final long serialVersionUID = 4439417051199359358L;

                 private String id;

         private String descriptor;

         private Long versionNumber;

         private Builder() {

         }

         public static Builder create() {

             return new Builder();

         }

         public static Builder create(ServiceDescriptorContract contract) {

             if (contract == null) {

                 throw new IllegalArgumentException("contract was null");

             }

             Builder builder = create();

             builder.setId(contract.getId());

             builder.setDescriptor(contract.getDescriptor());

             builder.setVersionNumber(contract.getVersionNumber());

             return builder;

         }

         public ServiceDescriptor build() {

             return new ServiceDescriptor(this);

         }

         @Override

         public String getId() {

             return this.id;

         }

         @Override

         public String getDescriptor() {

             return this.descriptor;

         }

         @Override

         public Long getVersionNumber() {

             return this.versionNumber;

         }

         public void setId(String id) {

             this.id = id;

         }

         public void setDescriptor(String descriptor) {

             this.descriptor = descriptor;

         }

         public void setVersionNumber(Long versionNumber) {

             this.versionNumber = versionNumber;

         }

     }

     /**

      * Defines some internal constants used on this class.

      * 

      */

     static class Constants {

         final static String ROOT_ELEMENT_NAME = "serviceDescriptor";

         final static String TYPE_NAME = "ServiceDescriptorType";

     }

     /**

      * A private class which exposes constants which define the XML element names to use when this object is marshalled to XML.

      * 

      */

     static class Elements {

         final static String ID = "id";

         final static String DESCRIPTOR = "descriptor";

     }

 }