package org.kuali.rice.krms.api.repository.agenda;

 import java.io.Serializable;

 import java.util.ArrayList;

 import java.util.Collection;

 import java.util.Collections;

 import java.util.List;

 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.XmlElements;

 import javax.xml.bind.annotation.XmlRootElement;

 import javax.xml.bind.annotation.XmlType;

 import org.apache.commons.lang.StringUtils;

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

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

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

 /**

  * Concrete model object implementation of KRMS Repository Agenda 

  * immutable. 

  * Instances of Agenda can be (un)marshalled to and from XML.

  *

  * @see AgendaDefinitionContract

  */

 @XmlRootElement(name = AgendaTreeDefinition.Constants.ROOT_ELEMENT_NAME)

 @XmlAccessorType(XmlAccessType.NONE)

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

                 AgendaTreeDefinition.Elements.AGENDA_ID,

                 AgendaTreeDefinition.Elements.ENTRIES,

                 CoreConstants.CommonElements.FUTURE_ELEMENTS

 })

 public final class AgendaTreeDefinition extends AbstractDataTransferObject {

         private static final long serialVersionUID = 3355519740298280591L;

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

         private final String agendaId;

         @XmlElements(value = {

             @XmlElement(name = Elements.RULE, type = AgendaTreeRuleEntry.class, required = false),

             @XmlElement(name = Elements.SUB_AGENDA, type = AgendaTreeSubAgendaEntry.class, required = false)

         })

         private final List<AgendaTreeEntryDefinition> entries;

         @SuppressWarnings("unused")

     @XmlAnyElement

     private final Collection<org.w3c.dom.Element> _futureElements = null;

         /** 

      * This constructor should never be called.  

      * It is only present for use during JAXB unmarshalling. 

      */

     private AgendaTreeDefinition() {

             this.agendaId = null;

             this.entries = null;

     }

     private AgendaTreeDefinition(Builder builder) {

             this.agendaId = builder.getAgendaId();

         this.entries = builder.getEntries();

     }

     public String getAgendaId() {

             return agendaId;

     }

         public List<AgendaTreeEntryDefinition> getEntries() {

                 if (entries == null){

                         return Collections.emptyList();

                 }

                 return Collections.unmodifiableList(entries);

         }

     public static class Builder implements ModelBuilder, Serializable {

                 private static final long serialVersionUID = 7981215392039022620L;

                 private String agendaId;

                 private List<AgendaTreeEntryDefinition> entries;

                 /**

                  * Private constructor for creating a builder with all of it's required attributes.

                  */

         private Builder() {

                 this.entries = new ArrayList<AgendaTreeEntryDefinition>();

         }

         public static Builder create(){

                 return new Builder();

         }

         public void setAgendaId(String agendaId) {

                         if (StringUtils.isBlank(agendaId)) {

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

                         }

                 this.agendaId = agendaId;

         }

         public void addRuleEntry(AgendaTreeRuleEntry ruleEntry) {

                 if (ruleEntry == null) {

                         throw new IllegalArgumentException("ruleEntry was null");

                 }

                 entries.add(ruleEntry);

         }

         public void addSubAgendaEntry(AgendaTreeSubAgendaEntry subAgendaEntry) {

                 if (subAgendaEntry == null) {

                         throw new IllegalArgumentException("subAgendaEntry was null");

                 }

                 entries.add(subAgendaEntry);

         }

         public String getAgendaId() {

                 return this.agendaId;

         }

         public List<AgendaTreeEntryDefinition> getEntries() {

                 return this.entries;

         }

         @Override

         public AgendaTreeDefinition build() {

             return new AgendaTreeDefinition(this);

         }

     }

         /**

          * Defines some internal constants used on this class.

          */

         static class Constants {

                 final static String ROOT_ELEMENT_NAME = "agendaTreeDefinition";

                 final static String TYPE_NAME = "AgendaTreeDefinition";

         }

         /**

          * 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 AGENDA_ID = "agendaId";

                 final static String ENTRIES = "entries";

                 final static String RULE = "rule";

                 final static String SUB_AGENDA = "subAgenda";

         }

 }