content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.aliyun.openservices.tablestore.hadoop;
  
  import java.util.Collections;
  import java.util.List;
  import java.util.ArrayList;
  import java.io.DataInput;
  import java.io.DataOutput;
  import java.io.IOException;
  import java.io.ByteArrayInputStream;
  import java.io.DataInputStream;
  import org.apache.commons.codec.binary.Base64;
  import org.apache.hadoop.io.Writable;
  import com.alicloud.openservices.tablestore.model.RangeRowQueryCriteria;
  
  public class MultiCriteria implements Writable {
      private List<RangeRowQueryCriteria> criteria = new ArrayList<RangeRowQueryCriteria>();
  
      public MultiCriteria() {
      }
  
      public List<RangeRowQueryCriteria> getCriteria() {
          return Collections.unmodifiableList(criteria);
      }
  
      public void addCriteria(RangeRowQueryCriteria criteria) {
          this.criteria.add(criteria);
      }
  
      @Override public boolean equals(Object obj) {
          if (obj == null) {
              return false;
          }
          if (!(obj instanceof MultiCriteria)) {
              return false;
          }
          MultiCriteria a = (MultiCriteria) obj;
          return this.criteria.equals(a.criteria);
      }
  
      @Override public void write(DataOutput out) throws IOException {
          out.writeByte(WritableConsts.MULTI_CRITERIA);
          out.writeInt(criteria.size());
          for(RangeRowQueryCriteria c: criteria) {
              new RangeRowQueryCriteriaWritable(c).write(out);
          }
      }
  
      @Override public void readFields(DataInput in) throws IOException {
          byte tag = in.readByte();
          if (tag != WritableConsts.MULTI_CRITERIA) {
              throw new IOException("broken input stream");
          }
          List<RangeRowQueryCriteria> newCriteria = new ArrayList<RangeRowQueryCriteria>();
          int sz = in.readInt();
          for(int i = 0; i < sz; ++i) {
              newCriteria.add(
                  RangeRowQueryCriteriaWritable.read(in).getRangeRowQueryCriteria());
          }
          criteria = newCriteria;
      }
  
      public static MultiCriteria read(DataInput in) throws IOException {
          MultiCriteria w = new MultiCriteria();
          w.readFields(in);
          return w;
      }
  
      public String serialize() {
          return Utils.serialize(this);
      }
  
      public static MultiCriteria deserialize(String in) {
          byte[] buf = Base64.decodeBase64(in);
          ByteArrayInputStream is = new ByteArrayInputStream(buf);
          DataInputStream din = new DataInputStream(is);
          try {
              return read(din);
          } catch(IOException ex) {
              return null;
          }
      }
  }
  
  