Package com.cedarsoft.serialization.serializers.jackson

Source Code of com.cedarsoft.serialization.serializers.jackson.ColorSerializer

/**
* Copyright (C) cedarsoft GmbH.
*
* Licensed under the GNU General Public License version 3 (the "License")
* with Classpath Exception; you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
*         http://www.cedarsoft.org/gpl3ce
*         (GPL 3 with Classpath Exception)
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3 only, as
* published by the Free Software Foundation. cedarsoft GmbH designates this
* particular file as subject to the "Classpath" exception as provided
* by cedarsoft GmbH in the LICENSE file that accompanied this code.
*
* This code 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 3 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 3 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact cedarsoft GmbH, 72810 Gomaringen, Germany,
* or visit www.cedarsoft.com if you need additional information or
* have any questions.
*/

package com.cedarsoft.serialization.serializers.jackson;

import com.cedarsoft.serialization.jackson.JacksonParserWrapper;
import com.cedarsoft.version.Version;
import com.cedarsoft.version.VersionException;
import com.cedarsoft.version.VersionRange;
import com.cedarsoft.serialization.jackson.AbstractJacksonSerializer;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.JsonToken;

import javax.annotation.Nonnull;
import java.awt.Color;
import java.io.IOException;

/**
*
*/
public class ColorSerializer extends AbstractJacksonSerializer<Color> {
  @Nonnull

  public static final String PROPERTY_RED = "red";
  @Nonnull

  public static final String PROPERTY_GREEN = "green";
  @Nonnull

  public static final String PROPERTY_BLUE = "blue";

  public ColorSerializer() {
    super( "color", VersionRange.from( 1, 0, 0 ).to( 1, 0, 0 ) );
  }

  @Override
  public void serialize( @Nonnull JsonGenerator serializeTo, @Nonnull Color object, @Nonnull Version formatVersion ) throws IOException, VersionException, JsonProcessingException {
    serializeTo.writeNumberField( PROPERTY_RED, object.getRed() );
    serializeTo.writeNumberField( PROPERTY_GREEN, object.getGreen() );
    serializeTo.writeNumberField( PROPERTY_BLUE, object.getBlue() );
  }

  @Nonnull
  @Override
  public Color deserialize( @Nonnull JsonParser deserializeFrom, @Nonnull Version formatVersion ) throws IOException, VersionException, JsonProcessingException {
    assert isVersionReadable( formatVersion );
    //red
    JacksonParserWrapper parserWrapper = new JacksonParserWrapper( deserializeFrom );
    parserWrapper.nextToken();
    parserWrapper.verifyCurrentToken( JsonToken.FIELD_NAME );
    String currentName2 = parserWrapper.getCurrentName();

    if ( !PROPERTY_RED.equals( currentName2 ) ) {
      throw new JsonParseException( "Invalid field. Expected <" + PROPERTY_RED + "> but was <" + currentName2 + ">", parserWrapper.getCurrentLocation() );
    }
    parserWrapper.nextToken();
    int red = parserWrapper.getIntValue();

    parserWrapper.nextToken();
    parserWrapper.verifyCurrentToken( JsonToken.FIELD_NAME );
    String currentName1 = parserWrapper.getCurrentName();

    if ( !PROPERTY_GREEN.equals( currentName1 ) ) {
      throw new JsonParseException( "Invalid field. Expected <" + PROPERTY_GREEN + "> but was <" + currentName1 + ">", parserWrapper.getCurrentLocation() );
    }
    parserWrapper.nextToken();
    int green = parserWrapper.getIntValue();

    parserWrapper.nextToken();
    parserWrapper.verifyCurrentToken( JsonToken.FIELD_NAME );
    String currentName = parserWrapper.getCurrentName();

    if ( !PROPERTY_BLUE.equals( currentName ) ) {
      throw new JsonParseException( "Invalid field. Expected <" + PROPERTY_BLUE + "> but was <" + currentName + ">", parserWrapper.getCurrentLocation() );
    }
    parserWrapper.nextToken();
    int blue = parserWrapper.getIntValue();

    parserWrapper.nextToken( JsonToken.END_OBJECT );

    return new Color( red, green, blue );
  }
}
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