/*
    *  Copyright 2001-2005 Stephen Colebourne
    *
    *  Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0
    *
   *  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.joda.time.chrono;
  
  import java.util.Locale;
  
  import org.joda.time.DateTimeConstants;
  import org.joda.time.DateTimeFieldType;
  import org.joda.time.DurationField;
  import org.joda.time.DurationFieldType;
  import org.joda.time.IllegalFieldValueException;
  import org.joda.time.field.BaseDateTimeField;
  import org.joda.time.field.FieldUtils;
  import org.joda.time.field.UnsupportedDurationField;
  
  /**
   * Provides time calculations for the coptic era component of time.
   *
   * @author Brian S O'Neill
   * @author Stephen Colebourne
   * @since 1.2, refactored from CopticEraDateTimeField
   */
  final class BasicSingleEraDateTimeField extends BaseDateTimeField {
  
      /**
       * Value of the era, which will be the same as DateTimeConstants.CE.
       */
      private static final int ERA_VALUE = DateTimeConstants.CE;
      /**
       * Text value of the era.
       */
      private final String iEraText;
  
      /**
       * Restricted constructor.
       */
      BasicSingleEraDateTimeField(String text) {
          super(DateTimeFieldType.era());
          iEraText = text;
      }
  
      /** @inheritDoc */
      public boolean isLenient() {
          return false;
      }
  
      /** @inheritDoc */
      public int get(long instant) {
          return ERA_VALUE;
      }
  
      /** @inheritDoc */
      public long set(long instant, int era) {
          FieldUtils.verifyValueBounds(this, era, ERA_VALUE, ERA_VALUE);
          return instant;
      }
  
      /** @inheritDoc */
      public long set(long instant, String text, Locale locale) {
          if (iEraText.equals(text) == false && "1".equals(text) == false) {
              throw new IllegalFieldValueException(DateTimeFieldType.era(), text);
          }
          return instant;
      }
  
      /** @inheritDoc */
      public long roundFloor(long instant) {
          return Long.MIN_VALUE;
      }
  
      /** @inheritDoc */
      public long roundCeiling(long instant) {
          return Long.MAX_VALUE;
      }
  
      /** @inheritDoc */
      public long roundHalfFloor(long instant) {
          return Long.MIN_VALUE;
      }
  
      /** @inheritDoc */
      public long roundHalfCeiling(long instant) {
          return Long.MIN_VALUE;
      }
  
      /** @inheritDoc */
     public long roundHalfEven(long instant) {
         return Long.MIN_VALUE;
     }
 
     /** @inheritDoc */
     public DurationField getDurationField() {
         return UnsupportedDurationField.getInstance(DurationFieldType.eras());
     }
 
     /** @inheritDoc */
     public DurationField getRangeDurationField() {
         return null;
     }
 
     /** @inheritDoc */
     public int getMinimumValue() {
         return ERA_VALUE;
     }
 
     /** @inheritDoc */
     public int getMaximumValue() {
         return ERA_VALUE;
     }
 
     /** @inheritDoc */
     public String getAsText(int fieldValue, Locale locale) {
         return iEraText;
     }
 
     /** @inheritDoc */
     public int getMaximumTextLength(Locale locale) {
         return iEraText.length();
     }
 
 }