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'rapiddweller Common' is an open source Java library forked from Databene Commons by Volker Bergmann. It provides extensions to the Java core library by utility classes, abstract concepts and concrete implementations.

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/*
 * Copyright (C) 2004-2015 Volker Bergmann ([email protected]).
 * All rights reserved.
 *
 * 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 com.rapiddweller.common.converter;

import com.rapiddweller.common.ConversionException;
import com.rapiddweller.common.Converter;
import com.rapiddweller.common.Patterns;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

/**
 * Converts any source type to any target type. It also makes use of the ConverterManager.
 * Created: 16.06.2007 11:34:42
 *
 * @param  the type to by checked by this validator
 * @author Volker Bergmann
 */
public class AnyConverter extends FormatHolder implements Converter {

  private static final Logger logger = LogManager.getLogger(AnyConverter.class);

  private final Class targetType;

  /**
   * Instantiates a new Any converter.
   *
   * @param targetType the target type
   */
  public AnyConverter(Class targetType) {
    this(targetType, Patterns.DEFAULT_DATE_PATTERN);
  }

  /**
   * Instantiates a new Any converter.
   *
   * @param targetType  the target type
   * @param datePattern the date pattern
   */
  public AnyConverter(Class targetType, String datePattern) {
    this.targetType = targetType;
    this.datePattern = datePattern;
  }

  @Override
  public Class getSourceType() {
    return Object.class;
  }

  @Override
  public Class getTargetType() {
    return targetType;
  }

  @Override
  public E convert(Object sourceValue) throws ConversionException {
    return convert(sourceValue, targetType, datePattern, timePattern, timestampPattern);
  }

  @Override
  public boolean isParallelizable() {
    return true;
  }

  @Override
  public boolean isThreadSafe() {
    return true;
  }

  /**
   * Convert tt.
   *
   * @param        the type parameter
   * @param source     the source
   * @param targetType the target type
   * @return the tt
   * @throws ConversionException the conversion exception
   */
  public static  TT convert(Object source, Class targetType) throws ConversionException {
    return convert(source, targetType, null, null, null);
  }

  /**
   * Converts an object of a given type to an object of the target type.
   *
   * @param              the target type
   * @param source           the object to convert
   * @param targetType       the target type of the conversion
   * @param datePattern      the date pattern to apply
   * @param timePattern      the time pattern to apply
   * @param timestampPattern the timestamp pattern to apply
   * @return an object of the target type
   * @throws ConversionException if conversion fails
   */
  @SuppressWarnings({"unchecked", "rawtypes"})
  public static  TT convert(Object source, Class targetType, String datePattern,
                                String timePattern, String timestampPattern) throws ConversionException {
    if (logger.isDebugEnabled()) {
      logger.debug("Converting " + source + (source != null ? " (" + source.getClass().getName() + ")" : "") + " to " + targetType);
    }
    if (source != null && targetType.equals(source.getClass())) {
      return (TT) source;
    }
    if (source == null) {
      if (targetType == double.class) {
        return (TT) (Double) Double.NaN;
      } else if (targetType == int.class) {
        return (TT) (Integer) 0;
      } else {
        return null;
      }
    }
    Converter converter = ConverterManager.getInstance().createConverter(source.getClass(), targetType);
    return (TT) converter.convert(source);
  }

  @Override
  public String toString() {
    return getClass().getSimpleName() + '(' + targetType.getSimpleName() + ')';
  }

}
    

    

    

            

    

            



    
    






    
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