/**
* 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.jackson;
import com.cedarsoft.version.Version;
import com.cedarsoft.version.VersionException;
import com.cedarsoft.version.VersionRange;
import com.cedarsoft.serialization.SerializingStrategy;
import com.cedarsoft.serialization.SerializingStrategySupport;
import com.cedarsoft.serialization.VersionMapping;
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.io.IOException;
import java.util.Collection;
/**
* @param <T> the type
* @author Johannes Schneider (<a href="mailto:js@cedarsoft.com">js@cedarsoft.com</a>)
*/
public abstract class AbstractDelegatingJacksonSerializer<T> extends AbstractJacksonSerializer<T> {
@Nonnull
protected final SerializingStrategySupport<T, JsonGenerator, JsonParser, JsonProcessingException> serializingStrategySupport;
protected AbstractDelegatingJacksonSerializer( @Nonnull String nameSpaceUriBase, @Nonnull VersionRange formatVersionRange ) {
super( nameSpaceUriBase, formatVersionRange );
this.serializingStrategySupport = new SerializingStrategySupport<T, JsonGenerator, JsonParser, JsonProcessingException>( formatVersionRange );
}
@Override
public void serialize( @Nonnull JsonGenerator serializeTo, @Nonnull T object, @Nonnull Version formatVersion ) throws IOException, VersionException, JsonProcessingException {
assert isVersionWritable( formatVersion );
SerializingStrategy<T, JsonGenerator, JsonParser, JsonProcessingException> strategy = serializingStrategySupport.findStrategy( object );
Version resolvedVersion = serializingStrategySupport.resolveVersion( strategy, formatVersion );
serializeTo.writeStringField( PROPERTY_SUB_TYPE, strategy.getId() );
strategy.serialize( serializeTo, object, resolvedVersion );
}
@Nonnull
@Override
public T deserialize( @Nonnull JsonParser deserializeFrom, @Nonnull Version formatVersion ) throws IOException, VersionException, JsonProcessingException {
assert isVersionReadable( formatVersion );
JacksonParserWrapper parserWrapper = new JacksonParserWrapper( deserializeFrom );
parserWrapper.nextToken();
parserWrapper.verifyCurrentToken( JsonToken.FIELD_NAME );
String currentName = parserWrapper.getCurrentName();
if ( !PROPERTY_SUB_TYPE.equals( currentName ) ) {
throw new JsonParseException( "Invalid field. Expected <" + PROPERTY_SUB_TYPE + "> but was <" + currentName + ">", parserWrapper.getCurrentLocation() );
}
parserWrapper.nextToken();
String type = deserializeFrom.getText();
if ( type == null ) {
throw new JsonParseException( "Attribute" + PROPERTY_SUB_TYPE + " not found. Cannot find strategy.", deserializeFrom.getCurrentLocation() );
}
SerializingStrategy<? extends T, JsonGenerator, JsonParser, JsonProcessingException> strategy = serializingStrategySupport.findStrategy( type );
Version resolvedVersion = serializingStrategySupport.resolveVersion( strategy, formatVersion );
return strategy.deserialize( deserializeFrom, resolvedVersion );
}
@Nonnull
public Collection<? extends SerializingStrategy<? extends T, JsonGenerator, JsonParser, JsonProcessingException>> getStrategies() {
return serializingStrategySupport.getStrategies();
}
@Nonnull
public VersionMapping addStrategy( @Nonnull SerializingStrategy<? extends T, JsonGenerator, JsonParser, JsonProcessingException> strategy ) {
return serializingStrategySupport.addStrategy( strategy );
}
@Nonnull
public SerializingStrategySupport<T, JsonGenerator, JsonParser, JsonProcessingException> getSerializingStrategySupport() {
return serializingStrategySupport;
}
}