content: /*
   * Copyright (c) 2015, 2020, Oracle and/or its affiliates.
   *
   * This program is free software; you can redistribute it and/or modify it under
   * the terms of the GNU General Public License, version 2.0, as published by the
   * Free Software Foundation.
   *
   * This program is also distributed with certain software (including but not
   * limited to OpenSSL) that is licensed under separate terms, as designated in a
   * particular file or component or in included license documentation. The
   * authors of MySQL hereby grant you an additional permission to link the
   * program and your derivative works with the separately licensed software that
   * they have included with MySQL.
   *
   * Without limiting anything contained in the foregoing, this file, which is
   * part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
   * version 1.0, a copy of which can be found at
   * http://oss.oracle.com/licenses/universal-foss-exception.
   *
   * This program is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
   * FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
   * for more details.
   *
   * You should have received a copy of the GNU General Public License along with
   * this program; if not, write to the Free Software Foundation, Inc.,
   * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
   */
  
  package com.mysql.cj.result;
  
  import java.math.BigDecimal;
  import java.math.BigInteger;
  
  import com.mysql.cj.Messages;
  import com.mysql.cj.conf.PropertyKey;
  import com.mysql.cj.conf.PropertySet;
  import com.mysql.cj.exceptions.DataConversionException;
  import com.mysql.cj.protocol.InternalDate;
  import com.mysql.cj.protocol.InternalTime;
  import com.mysql.cj.protocol.InternalTimestamp;
  
  /**
   * The default value factory provides a base class that can be used for value factories that do not support creation from every type. The default value factory
   * will thrown an UnsupportedOperationException for every method and individual methods must be overridden by subclasses.
   * 
   * @param <T>
   *            value type
   */
  public abstract class DefaultValueFactory<T> implements ValueFactory<T> {
  
      protected boolean jdbcCompliantTruncationForReads = true;
  
      public DefaultValueFactory(PropertySet pset) {
          this.pset = pset;
  
          // TODO we always check initial value here, whatever the setupServerForTruncationChecks() does for writes.
          // It also means that runtime changes of this variable have no effect on reads.
          this.jdbcCompliantTruncationForReads = this.pset.getBooleanProperty(PropertyKey.jdbcCompliantTruncation).getInitialValue();
      }
  
      protected PropertySet pset = null;
  
      @Override
      public void setPropertySet(PropertySet pset) {
          this.pset = pset;
      }
  
      protected T unsupported(String sourceType) {
          throw new DataConversionException(Messages.getString("ResultSet.UnsupportedConversion", new Object[] { sourceType, getTargetTypeName() }));
      }
  
      public T createFromDate(InternalDate idate) {
          return unsupported("DATE");
      }
  
      public T createFromTime(InternalTime it) {
          return unsupported("TIME");
      }
  
      public T createFromTimestamp(InternalTimestamp its) {
          return unsupported("TIMESTAMP");
      }
  
      @Override
      public T createFromDatetime(InternalTimestamp its) {
          return unsupported("DATETIME");
      }
  
      public T createFromLong(long l) {
          return unsupported("LONG");
      }
  
      public T createFromBigInteger(BigInteger i) {
          return unsupported("BIGINT");
      }
  
      public T createFromDouble(double d) {
          return unsupported("DOUBLE");
      }
  
      public T createFromBigDecimal(BigDecimal d) {
          return unsupported("DECIMAL");
      }
  
      public T createFromBit(byte[] bytes, int offset, int length) {
          return unsupported("BIT");
      }
  
      @Override
      public T createFromYear(long l) {
          return unsupported("YEAR");
      }
  
      public T createFromNull() {
          return null;
      }
  }
  