service-registry/src/main/java/io/servicecomb/serviceregistry/version/VersionRuleLatestParser.java

/*
 * Copyright 2017 Huawei Technologies Co., Ltd
 *
 * 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 io.servicecomb.serviceregistry.version;

import io.servicecomb.serviceregistry.definition.DefinitionConst;

public class VersionRuleLatestParser implements VersionRuleParser {
  class LatestVersionRule extends VersionRule {
    public LatestVersionRule(String versionRule) {
      super(versionRule);
    }

    @Override
    public boolean isAccept(Version version) {
      return true;
    }

    public boolean isMatch(Version version, Version latestVersion) {
      return version.equals(latestVersion);
    }
  }

  @Override
  public VersionRule parse(String strVersionRule) {
    if (!DefinitionConst.VERSION_RULE_LATEST.equals(strVersionRule)) {
      return null;
    }

    return new LatestVersionRule(strVersionRule);
  }
}