org.dominokit.jackson.deser.map.key.BaseDateKeyDeserializer Maven / Gradle / Ivy

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/*
 * Copyright 2013 Nicolas Morel
 *
 * 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.dominokit.jackson.deser.map.key;

import java.sql.Time;
import java.sql.Timestamp;
import java.util.Date;
import org.dominokit.jackson.JacksonContextProvider;
import org.dominokit.jackson.JsonDeserializationContext;

/**
 * Base implementation of {@link org.dominokit.jackson.deser.map.key.KeyDeserializer} for dates. It
 * uses both ISO-8601 and RFC-2822 for string-based key and milliseconds for number-based key.
 */
public abstract class BaseDateKeyDeserializer extends KeyDeserializer
    implements DateDeserializer {

  /** Default implementation of {@link BaseDateKeyDeserializer} for {@link Date} */
  public static final class DateKeyDeserializer extends BaseDateKeyDeserializer {

    private static final DateKeyDeserializer INSTANCE = new DateKeyDeserializer();

    /** @return an instance of {@link DateKeyDeserializer} */
    public static DateKeyDeserializer getInstance() {
      return INSTANCE;
    }

    private DateKeyDeserializer() {}

    @Override
    public Date deserializeMillis(long millis) {
      return new Date(millis);
    }

    @Override
    public Date deserializeDate(Date date) {
      return date;
    }
  }

  /** Default implementation of {@link BaseDateKeyDeserializer} for {@link java.sql.Date} */
  public static final class SqlDateKeyDeserializer extends BaseDateKeyDeserializer {

    private static final SqlDateKeyDeserializer INSTANCE = new SqlDateKeyDeserializer();

    /** @return an instance of {@link SqlDateKeyDeserializer} */
    public static SqlDateKeyDeserializer getInstance() {
      return INSTANCE;
    }

    private SqlDateKeyDeserializer() {}

    @Override
    public java.sql.Date deserializeMillis(long millis) {
      return new java.sql.Date(millis);
    }

    @Override
    public java.sql.Date deserializeDate(Date date) {
      return deserializeMillis(date.getTime());
    }
  }

  /** Default implementation of {@link BaseDateKeyDeserializer} for {@link Time} */
  public static final class SqlTimeKeyDeserializer extends BaseDateKeyDeserializer {

    private static final SqlTimeKeyDeserializer INSTANCE = new SqlTimeKeyDeserializer();

    /** @return an instance of {@link SqlTimeKeyDeserializer} */
    public static SqlTimeKeyDeserializer getInstance() {
      return INSTANCE;
    }

    private SqlTimeKeyDeserializer() {}

    @Override
    public Time deserializeMillis(long millis) {
      return new Time(millis);
    }

    @Override
    public Time deserializeDate(Date date) {
      return deserializeMillis(date.getTime());
    }
  }

  /** Default implementation of {@link BaseDateKeyDeserializer} for {@link Timestamp} */
  public static final class SqlTimestampKeyDeserializer extends BaseDateKeyDeserializer {

    private static final SqlTimestampKeyDeserializer INSTANCE = new SqlTimestampKeyDeserializer();

    /** @return an instance of {@link SqlTimestampKeyDeserializer} */
    public static SqlTimestampKeyDeserializer getInstance() {
      return INSTANCE;
    }

    private SqlTimestampKeyDeserializer() {}

    @Override
    public Timestamp deserializeMillis(long millis) {
      return new Timestamp(millis);
    }

    @Override
    public Timestamp deserializeDate(Date date) {
      return deserializeMillis(date.getTime());
    }
  }

  /** {@inheritDoc} */
  @Override
  protected D doDeserialize(String key, JsonDeserializationContext ctx) {
    return ((DateKeyParser) JacksonContextProvider.get().dateFormat().makeDateKeyParser())
        .parse(key, this);
  }
}