Package com.cedarsoft.couchdb.io

Source Code of com.cedarsoft.couchdb.io.ActionResponseSerializer

/**
* 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.couchdb.io;

import com.cedarsoft.couchdb.UniqueId;
import com.cedarsoft.version.VersionException;
import com.cedarsoft.couchdb.ActionResponse;
import com.cedarsoft.couchdb.DocId;
import com.cedarsoft.couchdb.Revision;
import com.cedarsoft.serialization.jackson.AbstractJacksonSerializer;
import com.cedarsoft.serialization.jackson.JacksonSupport;
import com.sun.jersey.api.client.ClientResponse;
import org.codehaus.jackson.JsonEncoding;
import org.codehaus.jackson.JsonFactory;
import org.codehaus.jackson.JsonGenerator;
import org.codehaus.jackson.JsonParser;
import org.codehaus.jackson.JsonProcessingException;
import org.codehaus.jackson.JsonToken;

import javax.annotation.Nonnull;
import javax.ws.rs.core.MediaType;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class ActionResponseSerializer {

  public static final String PROPERTY_ID = "id";

  public static final String PROPERTY_REV = "rev";

  public static final String PROPERTY_ERROR = "error";

  public static final String PROPERTY_REASON = "reason";

  public static final String PROPERTY_OK = "ok";


  @Nonnull
  public ActionResponse deserialize( @Nonnull ClientResponse response ) throws VersionException {
    if ( !MediaType.APPLICATION_JSON_TYPE.equals( response.getType() ) ) {
      throw new IllegalStateException( "Invalid media type: " + response.getType() );
    }

    UniqueId uniqueId = deserialize( response.getEntityInputStream() );

    return new ActionResponse( uniqueId, response.getStatus(), response.getLocation() );
  }

  @Nonnull
  public UniqueId deserialize( @Nonnull InputStream in ) throws VersionException {
    try {
      JsonFactory jsonFactory = JacksonSupport.getJsonFactory();

      JsonParser parser = jsonFactory.createJsonParser( in );
      AbstractJacksonSerializer.nextToken( parser, JsonToken.START_OBJECT );

      UniqueId deserialized = deserialize( parser );

      AbstractJacksonSerializer.ensureParserClosedObject( parser );

      return deserialized;
    } catch ( IOException e ) {
      throw new RuntimeException( e );
    }
  }

  @Nonnull
  public UniqueId deserialize( @Nonnull JsonParser deserializeFrom ) throws VersionException, IOException, JsonProcessingException {
    AbstractJacksonSerializer.nextFieldValue( deserializeFrom, PROPERTY_OK );
    AbstractJacksonSerializer.nextFieldValue( deserializeFrom, PROPERTY_ID );
    String id = deserializeFrom.getText();
    AbstractJacksonSerializer.nextFieldValue( deserializeFrom, PROPERTY_REV );
    String rev = deserializeFrom.getText();
    AbstractJacksonSerializer.closeObject( deserializeFrom );
    return new UniqueId( new DocId( id ), new Revision( rev ) );

    //    AbstractJacksonSerializer.nextToken( deserializeFrom, JsonToken.FIELD_NAME );
    //    if ( deserializeFrom.getCurrentName().equals( PROPERTY_OK ) ) {
    //    } else {
    //      AbstractJacksonSerializer.nextToken( deserializeFrom, JsonToken.VALUE_STRING );
    //      String error = deserializeFrom.getText();
    //      AbstractJacksonSerializer.nextFieldValue( deserializeFrom, PROPERTY_REASON );
    //      String reason = deserializeFrom.getText();
    //      AbstractJacksonSerializer.closeObject( deserializeFrom );
    //      return new ActionResponse( new ActionResponse.Error( error, reason ) );
    //    }
  }
}
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