/**
    * Copyright 2005-2015 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.criteria;
  
  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.util.type.KualiDecimal;
  import org.kuali.rice.core.api.util.type.KualiInteger;
  
  import javax.xml.bind.annotation.XmlAccessType;
  import javax.xml.bind.annotation.XmlAccessorType;
  import javax.xml.bind.annotation.XmlRootElement;
  import javax.xml.bind.annotation.XmlType;
  import javax.xml.bind.annotation.XmlValue;
  import java.math.BigDecimal;
  import java.math.BigInteger;
  
  /**
   * A CriteriaValue which stores {@link org.kuali.rice.core.api.util.type.KualiInteger} information in the form of a
   * {@link java.math.BigInteger} value.
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   *
   */
  @XmlRootElement(name = CriteriaKualiIntegerValue.Constants.ROOT_ELEMENT_NAME)
  @XmlAccessorType(XmlAccessType.NONE)
  @XmlType(name = CriteriaKualiIntegerValue.Constants.TYPE_NAME)
  public final class CriteriaKualiIntegerValue implements CriteriaValue<KualiInteger> {
  
      @XmlValue
      private final BigInteger value;
  
      CriteriaKualiIntegerValue() {
          this.value = null;
      }
  
      CriteriaKualiIntegerValue(KualiInteger value) {
      	validateValue(value);
          this.value = safeInstance(value);
      }
  
      CriteriaKualiIntegerValue(long value) {
          validateValue(value);
          this.value = new KualiInteger(value).bigIntegerValue();
      }
  
      CriteriaKualiIntegerValue(int value) {
          validateValue(value);
          this.value = new KualiInteger((long)value).bigIntegerValue();
      }
  
      CriteriaKualiIntegerValue(String value) {
          validateValue(value);
          this.value = new KualiInteger(value).bigIntegerValue();
      }
  
      CriteriaKualiIntegerValue(BigDecimal value) {
          validateValue(value);
          this.value = new KualiInteger(value).bigIntegerValue();
      }
  
      private static void validateValue(Object value) {
      	if (value == null) {
      		throw new IllegalArgumentException("Value cannot be null.");
      	}
      }
  
      /**
       * Since KualiInteger is not technically immutable we defensively copy when needed.
       * <p>
       * see Effective Java 2nd ed. page 79 for details.
       * </p>
       * @param val the KualiInteger to check
       * @return the safe BigInteger
       */
      private static BigInteger safeInstance(KualiInteger val) {
          return new BigInteger(val.bigIntegerValue().toString());
      }
      
      @Override
      public KualiInteger getValue() {
          return new KualiInteger(this.value);
      }
      
      @Override
     public int hashCode() {
         return HashCodeBuilder.reflectionHashCode(this);
     }
 
     @Override
     public boolean equals(Object obj) {
         return EqualsBuilder.reflectionEquals(obj, this);
     }
 
     @Override
     public String toString() {
         return ToStringBuilder.reflectionToString(this);
     }
     
     /**
      * Defines some internal constants used on this class.
      */
     static class Constants {
         final static String ROOT_ELEMENT_NAME = "kualiIntegerValue";
         final static String TYPE_NAME = "CriteriaKualiIntegerValueType";
     }
     
 }