/*
    *
    * 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 org.apache.hadoop.hbase.client;
  
  import java.io.IOException;
  import java.nio.ByteBuffer;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  import java.util.NavigableMap;
  import java.util.TreeMap;
  import java.util.UUID;
  
  import org.apache.hadoop.hbase.Cell;
  import org.apache.hadoop.hbase.CellUtil;
  import org.apache.hadoop.hbase.HConstants;
  import org.apache.hadoop.hbase.KeyValue;
  import org.apache.hadoop.hbase.Tag;
  import org.apache.hadoop.hbase.classification.InterfaceAudience;
  import org.apache.hadoop.hbase.classification.InterfaceStability;
  import org.apache.hadoop.hbase.io.HeapSize;
  import org.apache.hadoop.hbase.security.access.Permission;
  import org.apache.hadoop.hbase.security.visibility.CellVisibility;
  import org.apache.hadoop.hbase.util.Bytes;
  
  /**
   * Used to perform Put operations for a single row.
   * <p>
   * To perform a Put, instantiate a Put object with the row to insert to and
   * for eachumn to be inserted, execute {@link #addColumn(byte[], byte[], byte[]) add} or
   * {@link #addColumn(byte[], byte[], long, byte[]) add} if setting the timestamp.
   */
  @InterfaceAudience.Public
  @InterfaceStability.Stable
  public class Put extends Mutation implements HeapSize, Comparable<Row> {
    /**
     * Create a Put operation for the specified row.
     * @param row row key
     */
    public Put(byte [] row) {
      this(row, HConstants.LATEST_TIMESTAMP);
    }
  
    /**
     * Create a Put operation for the specified row, using a given timestamp.
     *
     * @param row row key; we make a copy of what we are passed to keep local.
     * @param ts timestamp
     */
    public Put(byte[] row, long ts) {
      this(row, 0, row.length, ts);
    }
  
    /**
     * We make a copy of the passed in row key to keep local.
     * @param rowArray
     * @param rowOffset
     * @param rowLength
     */
    public Put(byte [] rowArray, int rowOffset, int rowLength) {
      this(rowArray, rowOffset, rowLength, HConstants.LATEST_TIMESTAMP);
    }
  
    /**
     * @param row row key; we make a copy of what we are passed to keep local.
     * @param ts  timestamp
     */
    public Put(ByteBuffer row, long ts) {
      if (ts < 0) {
        throw new IllegalArgumentException("Timestamp cannot be negative. ts=" + ts);
      }
      checkRow(row);
      this.row = new byte[row.remaining()];
      row.get(this.row);
      this.ts = ts;
    }
  
    /**
     * @param row row key; we make a copy of what we are passed to keep local.
     */
    public Put(ByteBuffer row) {
      this(row, HConstants.LATEST_TIMESTAMP);
   }
 
   /**
    * We make a copy of the passed in row key to keep local.
    * @param rowArray
    * @param rowOffset
    * @param rowLength
    * @param ts
    */
   public Put(byte [] rowArray, int rowOffset, int rowLength, long ts) {
     checkRow(rowArray, rowOffset, rowLength);
     this.row = Bytes.copy(rowArray, rowOffset, rowLength);
     this.ts = ts;
     if (ts < 0) {
       throw new IllegalArgumentException("Timestamp cannot be negative. ts=" + ts);
     }
   }
 
   /**
    * Copy constructor.  Creates a Put operation cloned from the specified Put.
    * @param putToCopy put to copy
    */
   public Put(Put putToCopy) {
     this(putToCopy.getRow(), putToCopy.ts);
     this.familyMap = new TreeMap<byte [], List<Cell>>(Bytes.BYTES_COMPARATOR);
     for(Map.Entry<byte [], List<Cell>> entry: putToCopy.getFamilyCellMap().entrySet()) {
       this.familyMap.put(entry.getKey(), new ArrayList<Cell>(entry.getValue()));
     }
     this.durability = putToCopy.durability;
     for (Map.Entry<String, byte[]> entry : putToCopy.getAttributesMap().entrySet()) {
       this.setAttribute(entry.getKey(), entry.getValue());
     }
   }
 
   /**
    * Add the specified column and value to this Put operation.
    * @param family family name
    * @param qualifier column qualifier
    * @param value column value
    * @return this
    */
   public Put addColumn(byte [] family, byte [] qualifier, byte [] value) {
     return addColumn(family, qualifier, this.ts, value);
   }
 
   /**
    * See {@link #addColumn(byte[], byte[], byte[])}. This version expects
    * that the underlying arrays won't change. It's intended
    * for usage internal HBase to and for advanced client applications.
    */
   public Put addImmutable(byte [] family, byte [] qualifier, byte [] value) {
     return addImmutable(family, qualifier, this.ts, value);
   }
 
   /**
    * This expects that the underlying arrays won't change. It's intended
    * for usage internal HBase to and for advanced client applications.
    * <p>Marked as audience Private as of 1.2.0. {@link Tag} is an internal implementation detail
    * that should not be exposed publicly.
    */
   @InterfaceAudience.Private
   public Put addImmutable(byte[] family, byte [] qualifier, byte [] value, Tag[] tag) {
     return addImmutable(family, qualifier, this.ts, value, tag);
   }
 
   /**
    * Add the specified column and value, with the specified timestamp as
    * its version to this Put operation.
    * @param family family name
    * @param qualifier column qualifier
    * @param ts version timestamp
    * @param value column value
    * @return this
    */
   public Put addColumn(byte [] family, byte [] qualifier, long ts, byte [] value) {
     if (ts < 0) {
       throw new IllegalArgumentException("Timestamp cannot be negative. ts=" + ts);
     }
     List<Cell> list = getCellList(family);
     KeyValue kv = createPutKeyValue(family, qualifier, ts, value);
     list.add(kv);
     familyMap.put(CellUtil.cloneFamily(kv), list);
     return this;
   }
 
   /**
    * See {@link #addColumn(byte[], byte[], long, byte[])}. This version expects
    * that the underlying arrays won't change. It's intended
    * for usage internal HBase to and for advanced client applications.
    */
   public Put addImmutable(byte [] family, byte [] qualifier, long ts, byte [] value) {
     if (ts < 0) {
       throw new IllegalArgumentException("Timestamp cannot be negative. ts=" + ts);
     }
     List<Cell> list = getCellList(family);
     KeyValue kv = createPutKeyValue(family, qualifier, ts, value);
     list.add(kv);
     familyMap.put(family, list);
     return this;
   }
 
   /**
    * This expects that the underlying arrays won't change. It's intended
    * for usage internal HBase to and for advanced client applications.
    * <p>Marked as audience Private as of 1.2.0. {@link Tag} is an internal implementation detail
    * that should not be exposed publicly.
    */
   @InterfaceAudience.Private
   public Put addImmutable(byte[] family, byte[] qualifier, long ts, byte[] value, Tag[] tag) {
     List<Cell> list = getCellList(family);
     KeyValue kv = createPutKeyValue(family, qualifier, ts, value, tag);
     list.add(kv);
     familyMap.put(family, list);
     return this;
   }
 
   /**
    * This expects that the underlying arrays won't change. It's intended
    * for usage internal HBase to and for advanced client applications.
    * <p>Marked as audience Private as of 1.2.0. {@link Tag} is an internal implementation detail
    * that should not be exposed publicly.
    */
   @InterfaceAudience.Private
   public Put addImmutable(byte[] family, ByteBuffer qualifier, long ts, ByteBuffer value,
                           Tag[] tag) {
     if (ts < 0) {
       throw new IllegalArgumentException("Timestamp cannot be negative. ts=" + ts);
     }
     List<Cell> list = getCellList(family);
     KeyValue kv = createPutKeyValue(family, qualifier, ts, value, tag);
     list.add(kv);
     familyMap.put(family, list);
     return this;
   }
 
 
   /**
    * Add the specified column and value, with the specified timestamp as
    * its version to this Put operation.
    * @param family family name
    * @param qualifier column qualifier
    * @param ts version timestamp
    * @param value column value
    * @return this
    */
   public Put addColumn(byte[] family, ByteBuffer qualifier, long ts, ByteBuffer value) {
     if (ts < 0) {
       throw new IllegalArgumentException("Timestamp cannot be negative. ts=" + ts);
     }
     List<Cell> list = getCellList(family);
     KeyValue kv = createPutKeyValue(family, qualifier, ts, value, null);
     list.add(kv);
     familyMap.put(CellUtil.cloneFamily(kv), list);
     return this;
   }
 
   /**
    * See {@link #addColumn(byte[], ByteBuffer, long, ByteBuffer)}. This version expects
    * that the underlying arrays won't change. It's intended
    * for usage internal HBase to and for advanced client applications.
    */
   public Put addImmutable(byte[] family, ByteBuffer qualifier, long ts, ByteBuffer value) {
     if (ts < 0) {
       throw new IllegalArgumentException("Timestamp cannot be negative. ts=" + ts);
     }
     List<Cell> list = getCellList(family);
     KeyValue kv = createPutKeyValue(family, qualifier, ts, value, null);
     list.add(kv);
     familyMap.put(family, list);
     return this;
   }
 
   /**
    * Add the specified KeyValue to this Put operation.  Operation assumes that
    * the passed KeyValue is immutable and its backing array will not be modified
    * for the duration of this Put.
    * @param kv individual KeyValue
    * @return this
    * @throws java.io.IOException e
    */
   public Put add(Cell kv) throws IOException{
     byte [] family = CellUtil.cloneFamily(kv);
     List<Cell> list = getCellList(family);
     //Checking that the row of the kv is the same as the put
     int res = Bytes.compareTo(this.row, 0, row.length,
         kv.getRowArray(), kv.getRowOffset(), kv.getRowLength());
     if (res != 0) {
       throw new WrongRowIOException("The row in " + kv.toString() +
         " doesn't match the original one " +  Bytes.toStringBinary(this.row));
     }
     list.add(kv);
     familyMap.put(family, list);
     return this;
   }
 
   /**
    * A convenience method to determine if this object's familyMap contains
    * a value assigned to the given family &amp; qualifier.
    * Both given arguments must match the KeyValue object to return true.
    *
    * @param family column family
    * @param qualifier column qualifier
    * @return returns true if the given family and qualifier already has an
    * existing KeyValue object in the family map.
    */
   public boolean has(byte [] family, byte [] qualifier) {
   return has(family, qualifier, this.ts, new byte[0], true, true);
   }
 
   /**
    * A convenience method to determine if this object's familyMap contains
    * a value assigned to the given family, qualifier and timestamp.
    * All 3 given arguments must match the KeyValue object to return true.
    *
    * @param family column family
    * @param qualifier column qualifier
    * @param ts timestamp
    * @return returns true if the given family, qualifier and timestamp already has an
    * existing KeyValue object in the family map.
    */
   public boolean has(byte [] family, byte [] qualifier, long ts) {
   return has(family, qualifier, ts, new byte[0], false, true);
   }
 
   /**
    * A convenience method to determine if this object's familyMap contains
    * a value assigned to the given family, qualifier and timestamp.
    * All 3 given arguments must match the KeyValue object to return true.
    *
    * @param family column family
    * @param qualifier column qualifier
    * @param value value to check
    * @return returns true if the given family, qualifier and value already has an
    * existing KeyValue object in the family map.
    */
   public boolean has(byte [] family, byte [] qualifier, byte [] value) {
     return has(family, qualifier, this.ts, value, true, false);
   }
 
   /**
    * A convenience method to determine if this object's familyMap contains
    * the given value assigned to the given family, qualifier and timestamp.
    * All 4 given arguments must match the KeyValue object to return true.
    *
    * @param family column family
    * @param qualifier column qualifier
    * @param ts timestamp
    * @param value value to check
    * @return returns true if the given family, qualifier timestamp and value
    * already has an existing KeyValue object in the family map.
    */
   public boolean has(byte [] family, byte [] qualifier, long ts, byte [] value) {
       return has(family, qualifier, ts, value, false, false);
   }
 
   /*
    * Private method to determine if this object's familyMap contains
    * the given value assigned to the given family, qualifier and timestamp
    * respecting the 2 boolean arguments
    *
    * @param family
    * @param qualifier
    * @param ts
    * @param value
    * @param ignoreTS
    * @param ignoreValue
    * @return returns true if the given family, qualifier timestamp and value
    * already has an existing KeyValue object in the family map.
    */
   private boolean has(byte[] family, byte[] qualifier, long ts, byte[] value,
                       boolean ignoreTS, boolean ignoreValue) {
     List<Cell> list = getCellList(family);
     if (list.size() == 0) {
       return false;
     }
     // Boolean analysis of ignoreTS/ignoreValue.
     // T T => 2
     // T F => 3 (first is always true)
     // F T => 2
     // F F => 1
     if (!ignoreTS && !ignoreValue) {
       for (Cell cell : list) {
         if (CellUtil.matchingFamily(cell, family) &&
             CellUtil.matchingQualifier(cell, qualifier)  &&
             CellUtil.matchingValue(cell, value) &&
             cell.getTimestamp() == ts) {
           return true;
         }
       }
     } else if (ignoreValue && !ignoreTS) {
       for (Cell cell : list) {
         if (CellUtil.matchingFamily(cell, family) && CellUtil.matchingQualifier(cell, qualifier)
             && cell.getTimestamp() == ts) {
           return true;
         }
       }
     } else if (!ignoreValue && ignoreTS) {
       for (Cell cell : list) {
         if (CellUtil.matchingFamily(cell, family) && CellUtil.matchingQualifier(cell, qualifier)
             && CellUtil.matchingValue(cell, value)) {
           return true;
         }
       }
     } else {
       for (Cell cell : list) {
         if (CellUtil.matchingFamily(cell, family) &&
             CellUtil.matchingQualifier(cell, qualifier)) {
           return true;
         }
       }
     }
     return false;
   }
 
   /**
    * Returns a list of all KeyValue objects with matching column family and qualifier.
    *
    * @param family column family
    * @param qualifier column qualifier
    * @return a list of KeyValue objects with the matching family and qualifier,
    * returns an empty list if one doesn't exist for the given family.
    */
   public List<Cell> get(byte[] family, byte[] qualifier) {
     List<Cell> filteredList = new ArrayList<Cell>();
     for (Cell cell: getCellList(family)) {
       if (CellUtil.matchingQualifier(cell, qualifier)) {
         filteredList.add(cell);
       }
     }
     return filteredList;
   }
 
   @Override
   public Put setAttribute(String name, byte[] value) {
     return (Put) super.setAttribute(name, value);
   }
 
   @Override
   public Put setId(String id) {
     return (Put) super.setId(id);
   }
 
   @Override
   public Put setDurability(Durability d) {
     return (Put) super.setDurability(d);
   }
 
   @Override
   public Put setFamilyCellMap(NavigableMap<byte[], List<Cell>> map) {
     return (Put) super.setFamilyCellMap(map);
   }
 
   @Override
   public Put setClusterIds(List<UUID> clusterIds) {
     return (Put) super.setClusterIds(clusterIds);
   }
 
   @Override
   public Put setCellVisibility(CellVisibility expression) {
     return (Put) super.setCellVisibility(expression);
   }
 
   @Override
   public Put setACL(String user, Permission perms) {
     return (Put) super.setACL(user, perms);
   }
 
   @Override
   public Put setACL(Map<String, Permission> perms) {
     return (Put) super.setACL(perms);
   }
 
   @Override
   public Put setTTL(long ttl) {
     return (Put) super.setTTL(ttl);
   }
 }