GrantType.java

package auth;

import java.util.EnumSet;
import java.util.HashMap;
import java.util.Map;

public enum GrantType {

  LDAP("ldap"),
  PASSWORD("password"),
  REFRESH_TOKEN("refresh_token");

  private final String value;
  private static final Map<String, GrantType> lookup = new HashMap<>();

  static {
    for (GrantType grantType : EnumSet.allOf(GrantType.class)) {
      lookup.put(grantType.getValue(), grantType);
    }
  }

  GrantType(String value) {
    this.value = value;
  }

  public static GrantType get(String value) {
    return lookup.get(value.toLowerCase());
  }

  public String getValue() {
    return value;
  }
}