Android Open Source - kapsule Db Artifact

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Back to project page kapsule.

License

The source code is released under:

MIT License

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Java Source Code

package com.epsilonlabs.kapsule;
/*  w w  w . ja v a 2 s . c o m*/
import java.io.Serializable;
import java.util.Collection;
import java.util.Map;

import com.google.gson.Gson;

public class DbArtifact implements Serializable {
  private static final long serialVersionUID = 347502369977300975L;

  public enum ArtifactType {
    BASIC, COLLECTION, MAP
  }

  ArtifactType type;
  String clazz;
  String payload;

  public static DbArtifact create(Object value, Gson gson) {
    // Parameter checking
    if (value == null)
      throw new IllegalArgumentException("The value parameter was null.");
    if (gson == null)
      throw new IllegalArgumentException("The gson parameter was null.");

    DbArtifact artifact = new DbArtifact();
    // Check if we have a collection or a map
    if (Collection.class.isAssignableFrom(value.getClass()))
      artifact.type = ArtifactType.COLLECTION;
    else if (Map.class.isAssignableFrom(value.getClass()))
      artifact.type = ArtifactType.MAP;
    else
      artifact.type = ArtifactType.BASIC;
    // Get the inner-most class name
    Object firstElement;
    switch (artifact.type) {
    case COLLECTION:
      firstElement = ((Collection<?>) value).iterator().next();
      if (firstElement == null)
        artifact.clazz = Object.class.getName();
      else
        artifact.clazz = firstElement.getClass().getName();
      break;
    case MAP:
      firstElement = ((Map<?, ?>) value).entrySet().iterator().next().getValue();
      if (firstElement == null)
        artifact.clazz = Object.class.getName();
      else
        artifact.clazz = firstElement.getClass().getName();
      break;
    default:
      artifact.clazz = value.getClass().getName();
    }
    // JSON serialization time
    // TODO we need a special deserialization strategy for maps
    artifact.payload = gson.toJson(value);
    
    // We're done here
    return artifact;
  }
}

Java Source Code List