ApiVersion.java

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// Copyright 2014 Cloudera Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.cloudera.impala.extdatasource;

import com.cloudera.impala.extdatasource.v1.ExternalDataSource;
import com.google.common.base.Strings;

public enum ApiVersion {
  V1(com.cloudera.impala.extdatasource.v1.ExternalDataSource.class);

  private final Class<?> apiInterface_;

  ApiVersion(Class<?> interfaceClass) {
    apiInterface_ = interfaceClass;
  }

  public Class<?> getApiInterface() { return apiInterface_; }

  public static ApiVersion parseApiVersion(String apiVersionString) {
    if (Strings.isNullOrEmpty(apiVersionString)) return null;
    try {
      return valueOf(apiVersionString.toUpperCase());
    } catch (IllegalArgumentException ex) {
      return null;
    }
  }
}