/*
    *  Copyright 2010, 2011 Christopher Pheby
    *
    *  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.jadira.usertype.spi.shared;
  
  import java.sql.Date;
  import java.sql.Types;
  import java.util.TimeZone;
  
  import org.hibernate.engine.spi.SharedSessionContractImplementor;
  import org.hibernate.type.DateType;
  import org.jadira.usertype.spi.timezone.proxy.TimeZoneProvidingSharedSessionContractImplementor;
  
  public abstract class AbstractDateColumnMapper<T> extends AbstractColumnMapper<T, Date> implements DatabaseZoneConfigured {
  
      private static final long serialVersionUID = -8841076386862845448L;
  
  	private TimeZone databaseZone;
      
      @Override
      public final DateType getHibernateType() {
          return DateType.INSTANCE;
      }
  
      @Override
      public final int getSqlType() {
          return Types.DATE;
      }
  
      @Override
      public abstract T fromNonNullValue(Date value);
  
      @Override
      public abstract T fromNonNullString(String s);
  
      @Override
      public abstract Date toNonNullValue(T value);
  
      @Override
      public abstract String toNonNullString(T value);
      
  	@Override
  	public void setDatabaseZone(TimeZone databaseZone) {
  		this.databaseZone = databaseZone;
  	}
  
  	@Override
  	public TimeZone parseZone(String zoneString) {
  		return TimeZone.getTimeZone(zoneString);
  	}
  
  	@Override
  	public TimeZone getDatabaseZone() {
  		return databaseZone;
  	}
  
  	public SharedSessionContractImplementor wrapSession(SharedSessionContractImplementor session) {
  		
  		final SharedSessionContractImplementor mySession;
  
  		if (databaseZone != null) {
  			mySession = new TimeZoneProvidingSharedSessionContractImplementor(session, databaseZone);
  		} else {
  			mySession = session;
  		}
  		
  		return mySession;
  	}
  }