package org.kuali.rice.kew.api.document;

 /**

  * TODO...

  */

 import org.apache.commons.lang.StringUtils;

 import org.joda.time.DateTime;

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

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

 import org.w3c.dom.Element;

 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.XmlSeeAlso;

 import javax.xml.bind.annotation.XmlType;

 import java.util.Collection;

 @XmlAccessorType(XmlAccessType.NONE)

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

     DocumentAttribute.Elements.NAME,

     CoreConstants.CommonElements.FUTURE_ELEMENTS

 })

 @XmlSeeAlso( { DocumentAttributeString.class, DocumentAttributeDateTime.class, DocumentAttributeInteger.class, DocumentAttributeDecimal.class } )

 public abstract class DocumentAttribute<T> extends AbstractDataTransferObject {

     @XmlElement(name = Elements.NAME, required = true)

     private final String name;

     @SuppressWarnings("unused")

     @XmlAnyElement

     private final Collection<Element> _futureElements = null;

     protected DocumentAttribute() {

         this.name = null;

     }

     DocumentAttribute(String name) {

         if (StringUtils.isBlank(name)) {

             throw new IllegalArgumentException("name was null or blank");

         }

         this.name = name;

     }

     public String getName() {

         return name;

     }

     public abstract T getValue();

     public abstract DocumentAttributeDataType getDataType();

     /**

      * Defines some internal constants used on this class.

      */

     static class Constants {

         final static String TYPE_NAME = "DocumentAttributeType";

     }

     /**

      * 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 NAME = "name";

     }

 }