Backend.java example

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torodb-master
/*
 * ToroDB
 * Copyright © 2014 8Kdata Technology (www.8kdata.com)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

package com.torodb.standalone.config.model.backend;

import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import com.google.common.collect.ImmutableMap;
import com.torodb.packaging.config.model.backend.AbstractBackend;
import com.torodb.packaging.config.model.backend.BackendImplementation;
import com.torodb.standalone.config.jackson.BackendDeserializer;
import com.torodb.standalone.config.jackson.BackendSerializer;
import com.torodb.standalone.config.model.backend.derby.Derby;
import com.torodb.standalone.config.model.backend.postgres.Postgres;

import javax.validation.Valid;
import javax.validation.constraints.NotNull;

@JsonSerialize(using = BackendSerializer.class)
@JsonDeserialize(using = BackendDeserializer.class)
public class Backend extends AbstractBackend {

  public static final ImmutableMap<String, Class<? extends BackendImplementation>> BACKEND_CLASSES =
      ImmutableMap.<String, Class<? extends BackendImplementation>>builder()
          .put("postgres", Postgres.class)
          .put("derby", Derby.class)
          .build();

  public Backend() {
    this(new Postgres());
  }

  public Backend(BackendImplementation backendImplementation) {
    super(BACKEND_CLASSES);
    setBackendImplementation(backendImplementation);
  }

  @NotNull
  @Valid
  @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.WRAPPER_OBJECT)
  @JsonSubTypes({@JsonSubTypes.Type(name = "postgres", value = Postgres.class),
      @JsonSubTypes.Type(name = "derby", value = Derby.class),})
  @JsonProperty(required = true)
  public BackendImplementation getBackendImplementation() {
    return super.getBackendImplementation();
  }
}