/*

  * 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.kim.api.type;

 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.ArrayList;

 import java.util.Collection;

 import java.util.Collections;

 import java.util.List;

 /**

  * An immutable representation of a {@link KimTypeContract}.

  *

  * <p>To construct an instance of a KimType, use the {@link KimType.Builder} class.<p/>

  *

  * @see KimTypeContract

  */

 @XmlRootElement(name = KimType.Constants.ROOT_ELEMENT_NAME)

 @XmlAccessorType(XmlAccessType.NONE)

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

         KimType.Elements.ID,

         KimType.Elements.SERVICE_NAME,

         KimType.Elements.NAMESPACE_CODE,

         KimType.Elements.NAME,

         KimType.Elements.ATTRIBUTE_DEFNS,

         KimType.Elements.ACTIVE,

         CoreConstants.CommonElements.VERSION_NUMBER,

         CoreConstants.CommonElements.OBJECT_ID,

         CoreConstants.CommonElements.FUTURE_ELEMENTS

 })

 public final class KimType extends AbstractDataTransferObject implements KimTypeContract {

     private static final long serialVersionUID = 1L;

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

     private final String id;

     @XmlElement(name = KimType.Elements.SERVICE_NAME, required = false)

     private final String serviceName;

     @XmlElement(name = KimType.Elements.NAMESPACE_CODE, required = false)

     private final String namespaceCode;

     @XmlElement(name = KimType.Elements.NAME, required = false)

     private final String name;

     @XmlElement(name = KimType.Elements.ATTRIBUTE_DEFNS, required = false)

     private final List<KimTypeAttribute> attributeDefinitions;

     @XmlElement(name = KimType.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 except during JAXB unmarshalling.

      */

     private KimType() {

         this.id = null;

         this.serviceName = null;

         this.namespaceCode = null;

         this.name = null;

         this.attributeDefinitions = Collections.<KimTypeAttribute>emptyList();

         this.active = false;

         this.versionNumber = Long.valueOf(1L);

         this.objectId = null;

     }

     private KimType(Builder builder) {

         this.id = builder.getId();

         this.serviceName = builder.getServiceName();

         this.namespaceCode = builder.getNamespaceCode();

         this.name = builder.getName();

         final List<KimTypeAttribute> temp = new ArrayList<KimTypeAttribute>();

         for (KimTypeAttribute.Builder attr : builder.getAttributeDefinitions()) {

             //associate each attribute with this kimType's id

             attr.setKimTypeId(this.id);

             temp.add(attr.build());

         }

         this.attributeDefinitions = Collections.unmodifiableList(temp);

         this.active = builder.isActive();

         this.versionNumber = builder.getVersionNumber();

         this.objectId = builder.getObjectId();

     }

     /**

      * Gets the KimTypeAttribute matching the id of it's KimAttribute.  If no attribute definition exists with that

      * id then null is returned.

      *

      * <p>

      * If multiple exist with the same id then the first match is returned.  Since id

      * is supposed to be unique this should not be a problem in practice.

      * </p>

      *

      * @param id the KimTypeAttribute.KimAttribute's id

      * @return the KimTypeAttribute or null

      * @throws IllegalArgumentException if the id is blank

      */

     public KimTypeAttribute getAttributeDefinitionById(String id) {

         if (StringUtils.isBlank(id)) {

             throw new IllegalArgumentException("id is blank");

         }

         if (this.attributeDefinitions != null) {

             for (KimTypeAttribute att : this.attributeDefinitions) {

                 if (att != null && att.getKimAttribute() != null

                         && id.equals(att.getKimAttribute().getId())) {

                     return att;

                 }

             }

         }

                 return null;

         }

     /**

      * Gets the KimTypeAttribute matching the name of it's KimAttribute.  If no attribute definition exists with that

      * name then null is returned.

      *

      * <p>

      * If multiple exist with the same name then the first match is returned.  Since name

      * is supposed to be unique this should not be a problem in practice.

      * </p>

      *

      * @param name the KimTypeAttribute's name

      * @return the KimTypeAttribute or null

      * @throws IllegalArgumentException if the name is blank

      */

         public KimTypeAttribute getAttributeDefinitionByName(String name) {

         if (StringUtils.isBlank(name)) {

             throw new IllegalArgumentException("name is blank");

         }

         if (this.attributeDefinitions != null) {

             for (KimTypeAttribute att : this.attributeDefinitions) {

                 if (att != null && att.getKimAttribute() != null

                         && name.equals(att.getKimAttribute().getAttributeName())) {

                     return att;

                 }

             }

         }

                 return null;

         }

     @Override

     public String getId() {

         return id;

     }

     @Override

     public String getServiceName() {

         return serviceName;

     }

     @Override

     public String getNamespaceCode() {

         return namespaceCode;

     }

     @Override

     public String getName() {

         return name;

     }

     @Override

     public List<KimTypeAttribute> getAttributeDefinitions() {

         return attributeDefinitions;

     }

     @Override

     public boolean isActive() {

         return active;

     }

     @Override

     public Long getVersionNumber() {

         return versionNumber;

     }

     @Override

     public String getObjectId() {

         return objectId;

     }

     /**

      * This builder constructs an KimType enforcing the constraints of the {@link KimTypeContract}.

      */

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

         private String id;

         private String serviceName;

         private String namespaceCode;

         private String name;

         private List<KimTypeAttribute.Builder> attributeDefinitions = new ArrayList<KimTypeAttribute.Builder>();

         private boolean active;

         private Long versionNumber = 1L;

         private String objectId;

         private Builder() {

         }

         /**

          * creates a KimType with the required fields.

          */

         public static Builder create() {

             return new Builder();

         }

         /**

          * creates a KimType from an existing {@link KimTypeContract}.

          */

         public static Builder create(KimTypeContract contract) {

                 if (contract == null) {

                         throw new IllegalArgumentException("contract was null");

                 }

             Builder builder = new Builder();

             builder.setId(contract.getId());

             builder.setServiceName(contract.getServiceName());

             builder.setNamespaceCode(contract.getNamespaceCode());

             builder.setName(contract.getName());

             if (contract.getAttributeDefinitions() != null) {

                 final List<KimTypeAttribute.Builder> temp = new ArrayList<KimTypeAttribute.Builder>();

                 for (KimTypeAttributeContract attr : contract.getAttributeDefinitions()) {

                     temp.add(KimTypeAttribute.Builder.create(attr));

                 }

                 builder.setAttributeDefinitions(Collections.unmodifiableList(temp));

             }

             builder.setActive(contract.isActive());

             builder.setVersionNumber(contract.getVersionNumber());

             builder.setObjectId(contract.getObjectId());

             return builder;

         }

         @Override

         public String getId() {

             return id;

         }

         public void setId(final String id) {

             this.id = id;

         }

         @Override

         public String getServiceName() {

             return serviceName;

         }

         public void setServiceName(final String serviceName) {

             this.serviceName = serviceName;

         }

         @Override

         public String getNamespaceCode() {

             return namespaceCode;

         }

         public void setNamespaceCode(final String namespaceCode) {

             this.namespaceCode = namespaceCode;

         }

         @Override

         public String getName() {

             return name;

         }

         public void setName(final String name) {

             this.name = name;

         }

         @Override

         public List<KimTypeAttribute.Builder> getAttributeDefinitions() {

             return attributeDefinitions;

         }

         public void setAttributeDefinitions(final List<KimTypeAttribute.Builder> attributeDefinitions) {

             if (attributeDefinitions == null) {

                 throw new IllegalArgumentException("attributeDefinitions is null");

             }

             this.attributeDefinitions = attributeDefinitions;

         }

         @Override

         public boolean isActive() {

             return active;

         }

         public void setActive(final boolean active) {

             this.active = active;

         }

         @Override

         public Long getVersionNumber() {

             return versionNumber;

         }

         public void setVersionNumber(final Long versionNumber) {

             if (versionNumber != null && versionNumber <= 0) {

                 throw new IllegalArgumentException("versionNumber is invalid");

             }

             this.versionNumber = versionNumber;

         }

         @Override

         public String getObjectId() {

             return objectId;

         }

         public void setObjectId(final String objectId) {

             this.objectId = objectId;

         }

         @Override

         public KimType build() {

             return new KimType(this);

         }

     }

     /**

      * Defines some internal constants used on this class.

      */

     static class Constants {

         static final String ROOT_ELEMENT_NAME = "kimType";

         static final String TYPE_NAME = "KimTypeType";

     }

     /**

      * A private class which exposes constants which define the XML element names to use

      * when this object is marshalled to XML.

      */

     static class Elements {

         static final String ID = "id";

         static final String SERVICE_NAME = "serviceName";

         static final String NAMESPACE_CODE = "namespaceCode";

         static final String NAME = "name";

         static final String ATTRIBUTE_DEFNS = "attributeDefinitions";

         static final String ACTIVE = "active";

     }

 }