com.avos.avoscloud.ops.DeleteOp Maven / Gradle / Ivy

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package com.avos.avoscloud.ops;

import java.util.Map;

import com.avos.avoscloud.AVObject;
import com.avos.avoscloud.AVUtils;

/**
 * A delete op
 * 
 * @author dennis
 * 
 */
public class DeleteOp extends BaseOp {

  public DeleteOp() {
    super();
  }

  public DeleteOp(String key) {
    super(key, OpType.Delete);
  }

  @Override
  public Map encodeOp() {
    return AVUtils.createDeleteOpMap(key);
  }

  @Override
  public AVOp merge(AVOp other) {
    assertKeyEquals(other);
    switch (other.type()) {
      case Compound:
        other.cast(CompoundOp.class).addFirst(this);
        return other;
      case Set:
      case Add:
      case AddUnique:
      case AddRelation:
      case Increment:
        return other;
      case Remove:
      case RemoveRelation:
      case Null:
      case Delete:
        return this;
      default:
        throw new IllegalStateException("Unknow op type " + other.type());
    }
  }

  public Object getValues() {
    return null;
  }

  public Object apply(Object value) {
    return null;
  }

}