content: /*
   * Copyright 2022 paxos.cn.
   *
   * 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 cn.paxos.mysql.codec;
  
  import java.util.Collection;
  import java.util.Collections;
  import java.util.Set;
  
  abstract class AbstractCapabilitiesBuilder<B extends AbstractCapabilitiesBuilder> {
  	final Set<CapabilityFlags> capabilities = CapabilityFlags.getImplicitCapabilities();
  
  	public B addCapabilities(CapabilityFlags... capabilities) {
  		Collections.addAll(this.capabilities, capabilities);
  		return (B) this;
  	}
  
  	public B addCapabilities(Collection<CapabilityFlags> capabilities) {
  		this.capabilities.addAll(capabilities);
  		return (B) this;
  	}
  
  	public boolean hasCapability(CapabilityFlags capability) {
  		return capabilities.contains(capability);
  	}
  
  }
  