package com.cedarsoft.test.io;
import com.cedarsoft.Version;
import com.cedarsoft.VersionRange;
import com.cedarsoft.serialization.stax.AbstractStaxMateSerializer;
import com.cedarsoft.test.Car;
import com.cedarsoft.test.Extra;
import com.cedarsoft.test.Model;
import com.cedarsoft.test.Money;
import org.codehaus.staxmate.out.SMOutputElement;
import org.jetbrains.annotations.NonNls;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import java.awt.Color;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
*
*/
public class CarSerializer extends AbstractStaxMateSerializer<Car> {
//START SNIPPET: fieldsAndConstructors
//We create constants for the expected versions for the delegates
private static final Version VERSION_MONEY_SERIALIZER = new Version( 1, 0, 0 );
private static final Version VERSION_MODEL_SERIALIZER = new Version( 1, 0, 0 );
private static final Version VERSION_EXTRA_SERIALIZER = new Version( 1, 5, 0 );
private final MoneySerializer moneySerializer;
private final ExtraSerializer extraSerializer;
private final ModelSerializer modelSerializer;
public CarSerializer( MoneySerializer moneySerializer, ExtraSerializer extraSerializer, ModelSerializer modelSerializer ) {
super( "car", "http://www.cedarsoft.com/test/car", new VersionRange( VERSION_MONEY_SERIALIZER, VERSION_MONEY_SERIALIZER ) );
this.moneySerializer = moneySerializer;
this.extraSerializer = extraSerializer;
this.modelSerializer = modelSerializer;
//Verify the versions for the other serializers
verifyDelegatingSerializerVersion( moneySerializer, VERSION_MONEY_SERIALIZER );
verifyDelegatingSerializerVersion( extraSerializer, VERSION_EXTRA_SERIALIZER );
verifyDelegatingSerializerVersion( modelSerializer, VERSION_MODEL_SERIALIZER );
}
//END SNIPPET: fieldsAndConstructors
//START SNIPPET: serialize
@Override
public void serialize( SMOutputElement serializeTo, Car object ) throws IOException, XMLStreamException {
SMOutputElement colorElement = serializeTo.addElement( serializeTo.getNamespace(), "color" ); //okay, should be a own serializer in real world...
colorElement.addAttribute( "red", String.valueOf( object.getColor().getRed() ) );
colorElement.addAttribute( "blue", String.valueOf( object.getColor().getBlue() ) );
colorElement.addAttribute( "green", String.valueOf( object.getColor().getGreen() ) );
modelSerializer.serialize( serializeTo.addElement( serializeTo.getNamespace(), "model" ), object.getModel() );
moneySerializer.serialize( serializeTo.addElement( serializeTo.getNamespace(), "basePrice" ), object.getBasePrice() );
//We could also at an additional tag called "extras". But I don't like that style... So here we go...
for ( Extra extra : object.getExtras() ) {
extraSerializer.serialize( serializeTo.addElement( serializeTo.getNamespace(), "extra" ), extra );
}
}
//END SNIPPET: serialize
//START SNIPPET: deserialize
@Override
public Car deserialize( XMLStreamReader deserializeFrom, Version formatVersion ) throws IOException, XMLStreamException {
//We deserialize the color. This should be done in its own serializer in real world --> improved reusability and testability
nextTag( deserializeFrom, "color" );
int red = Integer.parseInt( deserializeFrom.getAttributeValue( null, "red" ) );
int blue = Integer.parseInt( deserializeFrom.getAttributeValue( null, "blue" ) );
int green = Integer.parseInt( deserializeFrom.getAttributeValue( null, "green" ) );
Color color = new Color( red, green, blue );
closeTag( deserializeFrom );
nextTag( deserializeFrom, "model" );
Model model = modelSerializer.deserialize( deserializeFrom, VERSION_MODEL_SERIALIZER );
nextTag( deserializeFrom, "basePrice" );
Money basePrice = moneySerializer.deserialize( deserializeFrom, VERSION_MONEY_SERIALIZER );
//Now we visit all remaining children (should only be extras)
final List<Extra> extras = new ArrayList<Extra>();
visitChildren( deserializeFrom, new CB() {
@Override
public void tagEntered( XMLStreamReader deserializeFrom, @NonNls String tagName ) throws XMLStreamException, IOException {
extras.add( extraSerializer.deserialize( deserializeFrom, VERSION_EXTRA_SERIALIZER ) );
}
} );
return new Car( model, color, basePrice, extras );
}
//END SNIPPET: deserialize
}