/*

  * Copyright 2006-2011 The Kuali Foundation

  *

  * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php

  *

  * 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 org.kuali.rice.core.api.component;

 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;

 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.XmlRootElement;

 import javax.xml.bind.annotation.XmlType;

 import java.io.Serializable;

 import java.util.Collection;

 /**

  * An immutable representation of an {@link ComponentContract}.

  *

  * Use the class {@link Component.Builder} to construct an Component object.

  * 

  * @see ComponentContract

  */

 @XmlRootElement(name = Component.Constants.ROOT_ELEMENT_NAME)

 @XmlAccessorType(XmlAccessType.NONE)

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

     Component.Elements.NAMESPACE_CODE,

     Component.Elements.CODE,

     Component.Elements.NAME,

     Component.Elements.VIRTUAL,

     Component.Elements.ACTIVE,

     CoreConstants.CommonElements.VERSION_NUMBER,

     CoreConstants.CommonElements.OBJECT_ID,

     CoreConstants.CommonElements.FUTURE_ELEMENTS

 })

 public final class Component extends AbstractDataTransferObject implements ComponentContract {

         private static final long serialVersionUID = -5114772381708593543L;

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

         private final String namespaceCode;

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

     private final String code;

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

     private final String name;

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

     private final boolean virtual;

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

     private final boolean active;

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

     private final Long versionNumber;

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

         private final String objectId;

     @SuppressWarnings("unused")

     @XmlAnyElement

     private final Collection<Element> _futureElements = null;

     /** 

      * This constructor should never be called.  It is only present for use during JAXB unmarshalling. 

      */

     private Component() {

             this.namespaceCode = null;

             this.code = null;

             this.name = null;

             this.virtual = false;

             this.active = true;

         this.versionNumber = null;

         this.objectId = null;

     }

         /**

          * Constructs a Component from the given builder.  This constructor is private and should only

          * ever be invoked from the builder.

          *

          * @param builder the Builder from which to construct the component

          */

     private Component(Builder builder) {

                 namespaceCode = builder.getNamespaceCode();

                 code = builder.getCode();

         name = builder.getName();

         virtual = builder.isVirtual();

         active = builder.isActive();

         versionNumber = builder.getVersionNumber();

         this.objectId = builder.getObjectId();

     }

     @Override

     public String getNamespaceCode() {

                 return namespaceCode;

         }

     @Override

         public String getCode() {

                 return code;

         }

     @Override

         public String getName() {

                 return name;

         }

     @Override

         public boolean isVirtual() {

                 return virtual;

         }

     @Override

         public boolean isActive() {

                 return active;

         }

     @Override

         public Long getVersionNumber() {

                 return versionNumber;

         }

     @Override

         public String getObjectId() {

                 return objectId;

         }

         /**

      * This builder is used to construct instances of Component.  It enforces the constraints of the {@link ComponentContract}.

      */

     public static final class Builder implements ComponentContract, ModelBuilder, Serializable {

                 private static final long serialVersionUID = 5548130104299578283L;

                 private String namespaceCode;

                 private String code;

         private String name;

         private boolean virtual;

         private boolean active;

         private Long versionNumber;

         private String objectId;

                 /**

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

                  */

         private Builder(String namespaceCode, String code, String name, boolean virtual) {

                         setNamespaceCode(namespaceCode);

             setCode(code);

             setName(name);

             setVirtual(virtual);

                         setActive(true);

         }

         /**

                  * Constructs a Namespace builder given the namcespace code, component code, name, and virtual flag

                  * which are all required.  Defaults the active indicator to true.

                  *

                  * @param namespaceCode the namespace code to use when constructing this builder

                  * @param code the component code to use when constructing this builder

                  * @param name the component name to use when constructing this builder

                  * @param virtual the virtual flag to use when constructing this builder

                  * @throws IllegalArgumentException if any of the parameters are null or blank

                  */

         public static Builder create(String namespaceCode, String code, String name, boolean virtual) {

             return new Builder(namespaceCode, code, name, virtual);

         }

         /**

          * Creates a builder by populating it with data from the given {@link ComponentContract}.

          * 

          * @param contract the contract from which to populate this builder

          * @return an instance of the builder populated with data from the contract

          */

         public static Builder create(ComponentContract contract) {

             Builder builder = new Builder(contract.getNamespaceCode(), contract.getCode(), contract.getName(),  contract.isVirtual());

             builder.setActive(contract.isActive());

             builder.setVersionNumber(contract.getVersionNumber());

             builder.setObjectId(contract.getObjectId());

             return builder;

         }

                 /**

                  * Sets the value of the namespace code on this builder to the given value.

              *

              * @param namespaceCode the namespace code value to set, must not be null or blank

              * @throws IllegalArgumentException if the given namespace code is null or blank

              */

         public void setNamespaceCode(String namespaceCode) {

                         if (StringUtils.isBlank(namespaceCode)) {

                            throw new IllegalArgumentException("namespaceCode is null");

                    }

                    this.namespaceCode = namespaceCode;

            }

                 /**

                   * Sets the value of the component code on this builder to the given value.

                  *

                  * @param code the component code value to set, must not be null or blank

                  * @throws IllegalArgumentException if the given component code is null or blank

                  */

         public void setCode(String code) {

             if (StringUtils.isBlank(code)) {

                 throw new IllegalArgumentException("code is blank");

             }

             this.code = code;

         }

                 /**

                  * Sets the value of the component name on this builder to the given value.

              *

              * @param name the component name value to set, must not be null or blank

              * @throws IllegalArgumentException if the given component name is null or blank

              */

         public void setName(String name) {

             if (StringUtils.isBlank(name)) {

                 throw new IllegalArgumentException("name is blank");

             }

             this.name = name;

         }

         @Override

                 public boolean isVirtual() {

                         return virtual;

                 }

                 public void setVirtual(boolean virtual) {

                         this.virtual = virtual;

                 }

         @Override

                 public boolean isActive() {

                         return active;

                 }

                 public void setActive(boolean active) {

                         this.active = active;

                 }

         @Override

                 public String getNamespaceCode() {

                         return namespaceCode;

                 }

         @Override

                 public String getCode() {

                         return code;

                 }

         @Override

                 public String getName() {

                         return name;

                 }

          @Override

                 public Long getVersionNumber() {

                         return versionNumber;

                 }

                 public void setVersionNumber(Long versionNumber) {

                         this.versionNumber = versionNumber;

                 }

                 @Override

             public String getObjectId() {

                     return objectId;

             }

                 public void setObjectId(String objectId) {

                 this.objectId = objectId;

         }

                 /**

                  * Builds an instance of a Component based on the current state of the builder.

                  *

                  * @return the fully-constructed Component

                  */

                 @Override

         public Component build() {

             return new Component(this);

         }

     }

         /**

          * Defines some internal constants used on this class.

          */

         static class Constants {

            final static String ROOT_ELEMENT_NAME = "component";

            final static String TYPE_NAME = "ComponentType";

         }

         /**

          * 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 CODE = "code";

             final static String NAME = "name";

             final static String VIRTUAL = "virtual";

                 final static String NAMESPACE_CODE = "namespaceCode";

                 final static String ACTIVE = "active";

         }

 }