net.snowflake.common.core.SFVariant Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of snowflake-common Show documentation

Snowflake Common Package

There is a newer version: 5.1.4

package net.snowflake.common.core;

/**
 * Represents VARIANT value
 * Currently only supports empty non-elementary values
 * Instances of this class are immutable
 * @author avg
 */
public class SFVariant
{
  /** Variant value type */
  public enum VType {
    ANY,
    ARRAY,
    OBJECT
  };
  
  public static final SFVariant SFVARIANT_ANY = new SFVariant(VType.ANY);
  public static final SFVariant SFVARIANT_ARRAY = new SFVariant(VType.ARRAY);
  public static final SFVariant SFVARIANT_OBJECT = new SFVariant(VType.OBJECT);

  /**
   * Construct empty variant value of a given type
   * @param vtype variant type
   */
  public SFVariant(VType vtype)
  {
    this.vtype_ = vtype;
  }

  /**
   * Get the variant value type
   * @return variant type
   */
  public VType getVType()
  {
    return this.vtype_;
  }

  /**
   * Compare for equality
   * @param other target SFVariant
   * @return true if equal otherwise false
   */
  public boolean equals(SFVariant other)
  {
    return this.vtype_ == other.vtype_;
  }

  private final VType vtype_;

  /**
   * {@inheritDoc}
   */
  public int hashCode()
  {
    switch(vtype_)
    {
      case ANY:
        return 1;
      case ARRAY:
        return 2;
      case OBJECT:
        return 3;
    }

    return 0;

  }
}