/*
    * Copyright 2021 TiKV Project Authors.
    *
    * 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 org.tikv.common.meta;
  
  import com.fasterxml.jackson.annotation.JsonCreator;
  import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
  import com.fasterxml.jackson.annotation.JsonProperty;
  import java.io.Serializable;
  import org.tikv.common.types.DataType;
  
  @JsonIgnoreProperties(ignoreUnknown = true)
  public class TiIndexColumn implements Serializable {
    private final String name;
    private final int offset;
    private final long length;
  
    @JsonCreator
    public TiIndexColumn(
        @JsonProperty("name") org.tikv.common.meta.CIStr name,
        @JsonProperty("offset") int offset,
        @JsonProperty("length") long length) {
      this.name = name.getL();
      this.offset = offset;
      this.length = length;
    }
  
    public String getName() {
      return name;
    }
  
    public int getOffset() {
      return offset;
    }
  
    public long getLength() {
      return length;
    }
  
    public boolean isLengthUnspecified() {
      return DataType.isLengthUnSpecified(length);
    }
  
    public boolean isPrefixIndex() {
      return !isLengthUnspecified();
    }
  
    public boolean matchName(String otherName) {
      return name.equalsIgnoreCase(otherName);
    }
  
    @Override
    public String toString() {
      return String.format(
          "%s {name: %s, offset: %d, length: %d}", getClass().getSimpleName(), name, offset, length);
    }
  }