org.apache.geode.redis.internal.executor.hll.HllExecutor Maven / Gradle / Ivy

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 * 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.
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package org.apache.geode.redis.internal.executor.hll;

import org.apache.geode.redis.internal.ByteArrayWrapper;
import org.apache.geode.redis.internal.ExecutionHandlerContext;
import org.apache.geode.redis.internal.RedisDataType;
import org.apache.geode.redis.internal.RedisDataTypeMismatchException;
import org.apache.geode.redis.internal.executor.AbstractExecutor;

public abstract class HllExecutor extends AbstractExecutor {

  public static final Double DEFAULT_HLL_STD_DEV = 0.081;
  public static final Integer DEFAULT_HLL_DENSE = 18;
  public static final Integer DEFAULT_HLL_SPARSE = 32;

  protected final void checkAndSetDataType(ByteArrayWrapper key, ExecutionHandlerContext context) {
    Object oldVal = context.getRegionProvider().metaPutIfAbsent(key, RedisDataType.REDIS_HLL);
    if (oldVal == RedisDataType.REDIS_PROTECTED)
      throw new RedisDataTypeMismatchException("The key name \"" + key + "\" is protected");
    if (oldVal != null && oldVal != RedisDataType.REDIS_HLL)
      throw new RedisDataTypeMismatchException(
          "The key name \"" + key + "\" is already used by a " + oldVal.toString());
  }
}