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

 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.apache.commons.lang.StringUtils;

 import org.apache.commons.lang.builder.EqualsBuilder;

 import org.apache.commons.lang.builder.HashCodeBuilder;

 import org.apache.commons.lang.builder.ToStringBuilder;

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

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

 /**

  * Concrete model object implementation of RuleAttribute. 

  * immutable. 

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

  *

  */

 @XmlRootElement(name = RuleAttribute.Constants.ROOT_ELEMENT_NAME, namespace = RuleAttribute.Constants.KRMSNAMESPACE)

 @XmlAccessorType(XmlAccessType.NONE)

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

                 RuleAttribute.Elements.ID,

                 RuleAttribute.Elements.RULE_ID,

                 RuleAttribute.Elements.ATTR_DEFN_ID,

                 RuleAttribute.Elements.VALUE,

                 RuleAttribute.Elements.ATTR_DEFN,

                 "_elements"

 })

 public final class RuleAttribute implements RuleAttributeContract, ModelObjectComplete{                

         private static final long serialVersionUID = 2988399046412505534L;

         @XmlElement(name = Elements.ID, required=true, namespace = RuleAttribute.Constants.KRMSNAMESPACE)

         private String id;

         @XmlElement(name = Elements.RULE_ID, required=true, namespace = RuleAttribute.Constants.KRMSNAMESPACE)

         private String ruleId;

         @XmlElement(name = Elements.ATTR_DEFN_ID, required=true, namespace = RuleAttribute.Constants.KRMSNAMESPACE)

         private String attributeDefinitionId;

         @XmlElement(name = Elements.VALUE, required=true, namespace = RuleAttribute.Constants.KRMSNAMESPACE)

         private String value;

         @XmlElement(name = Elements.ATTR_DEFN, required=false, namespace = RuleAttribute.Constants.KRMSNAMESPACE)

         private KrmsAttributeDefinition attributeDefinition;

         @SuppressWarnings("unused")

     @XmlAnyElement

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

          /** 

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

      */

     private RuleAttribute() {

             this.id = null;

             this.ruleId = null;

             this.attributeDefinitionId = null;

             this.value = null;

             this.attributeDefinition = null;

     }

     /**

          * Constructs an RuleAttribute 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 RuleAttribute

          */

     private RuleAttribute(Builder builder) {

         this.id = builder.getId();

         this.ruleId = builder.getRuleId();

         this.attributeDefinitionId = builder.getAttributeDefinitionId();

         this.value = builder.getValue();

         this.attributeDefinition = builder.getAttributeDefinition().build();

     }

         @Override

         public String getId() {

                 return this.id;

         }

         @Override

         public String getRuleId() {

                 return this.ruleId;

         }

         @Override

         public String getAttributeDefinitionId() {

                 return this.attributeDefinitionId;

         }

         @Override

         public String getValue() {

                 return this.value;

         }

         @Override

         public KrmsAttributeDefinition getAttributeDefinition() {

                 return this.attributeDefinition;

         }

         /**

      * This builder is used to construct instances of RuleAttribute.  

      */

     public static class Builder implements RuleAttributeContract, ModelBuilder, Serializable {                

                 private static final long serialVersionUID = -8619106871420999876L;

                 private String id;

         private String ruleId;

         private String attributeDefinitionId;

         private String value;

         private KrmsAttributeDefinition.Builder attributeDefinition;

                 /**

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

                  */

         private Builder(String id, String ruleId, String attributeDefinitionId, String value) {

             setId(id);

             setRuleId(ruleId);

             setAttributeDefinitionId(attributeDefinitionId);

             setValue(value);

         }

         public Builder attributeDefinition(KrmsAttributeDefinition.Builder attributeDefinition){

                 setAttributeDefinition(attributeDefinition);

                 return this;

         }

         /**

          * Creates a builder from the given parameters.

          * 

          * @param id the RuleAtribute id

          * @param ruleId the Rule Id 

          * @param attributeDefinitionId The attributeDefinitionId

          * @param value 

          * @return an instance of the builder with the fields already populated

          * @throws IllegalArgumentException if the either the id, name or namespace is null or blank

          */

         public static Builder create(String id, String ruleId, String attributeDefinitionId, String value) {

             return new Builder(id, ruleId, attributeDefinitionId, value);

         }

         public static Builder create(RuleAttributeContract contract){

                 if (contract == null) {

                 throw new IllegalArgumentException("contract is null");

             }

                 Builder builder = new Builder(contract.getId(), 

                                 contract.getRuleId(),

                                 contract.getAttributeDefinitionId(),

                                 contract.getValue())

                                 .attributeDefinition(KrmsAttributeDefinition.Builder

                                                 .create(contract.getAttributeDefinition()));

                 return builder;

         }

                 /**

                  * Sets the value of the id on this builder to the given value.

                  * 

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

                  * @throws IllegalArgumentException if the id is null or blank

                  */

         public void setId(String id) {

             if (StringUtils.isBlank(id)) {

                 throw new IllegalArgumentException("id is blank");

             }

             this.id = id;

         }

                 public void setRuleId(String ruleId) {

             if (StringUtils.isBlank(ruleId)) {

                 throw new IllegalArgumentException("ruleId is blank");

             }

                         this.ruleId = ruleId;

                 }

                 public void setAttributeDefinitionId(String attributeDefinitionId) {

             if (StringUtils.isBlank(attributeDefinitionId)) {

                 throw new IllegalArgumentException("the attribute definition id is blank");

             }

                         this.attributeDefinitionId = attributeDefinitionId;

                 }

                 public void setValue(String value) {

                         this.value = value;

                 }

                 public void setAttributeDefinition(KrmsAttributeDefinition.Builder attributeDefinition) {

                         this.attributeDefinition = attributeDefinition;

                         //TODO: verify that the attributeDefinitionID field matches the id field in the builder

                 }

                 @Override

                 public String getId() {

                         return id;

                 }

                 @Override

                 public String getRuleId() {

                         return ruleId;

                 }

                 @Override

                 public String getAttributeDefinitionId() {

                         return attributeDefinitionId;

                 }

                 @Override

                 public String getValue() {

                         return value;

                 }

                 @Override

                 public KrmsAttributeDefinition.Builder getAttributeDefinition() {

                         return attributeDefinition;

                 }

                 /**

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

                  * 

                  * @return the fully-constructed RuleAttribute

                  */

         @Override

         public RuleAttribute build() {

             return new RuleAttribute(this);

         }

     }

         @Override

         public int hashCode() {

                 return HashCodeBuilder.reflectionHashCode(this, Constants.HASH_CODE_EQUALS_EXCLUDE);

         }

         @Override

         public boolean equals(Object obj) {

                 return EqualsBuilder.reflectionEquals(obj, this, Constants.HASH_CODE_EQUALS_EXCLUDE);

         }

         @Override

         public String toString() {

                 return ToStringBuilder.reflectionToString(this);

         }

         /**

          * Defines some internal constants used on this class.

          */

         static class Constants {

                 final static String KRMSNAMESPACE = "http://rice.kuali.org/schema/krms";                

                 final static String ROOT_ELEMENT_NAME = "RuleAttribute";

                 final static String TYPE_NAME = "RuleAttributeType";

                 final static String[] HASH_CODE_EQUALS_EXCLUDE = { "_elements" };

         }

         /**

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

          * when this object is marshalled to XML.

          */

         public static class Elements {

                 final static String ID = "id";

                 final static String RULE_ID = "ruleId";

                 final static String ATTR_DEFN_ID = "attributeDefinitionId";

                 final static String VALUE = "value";

                 final static String ATTR_DEFN = "attributeDefinition";

         }

 }