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Apache Geode provides a database-like consistency model, reliable transaction processing and a shared-nothing architecture to maintain very low latency performance with high concurrency processing
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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.
 */

package org.apache.geode.cache;

import java.util.List;
import java.util.Properties;

import org.apache.geode.cache.PartitionResolver;
import org.apache.geode.cache.partition.PartitionListener;

/**
 * 
 * Attributes that define the partitioned character of a Partitioned Region. This interface allows
 * for the discovery of Partitioned Region attributes using
 * {@link org.apache.geode.cache.RegionAttributes#getPartitionAttributes()} as well as the
 * configuration of a Partitioned Region using
 * {@link org.apache.geode.cache.AttributesFactory#setPartitionAttributes(PartitionAttributes)}.
 * 
 * PartitionAttributes are created using the
 * {@link org.apache.geode.cache.PartitionAttributesFactory}
 * 
 * The default PartitionAttributes can be determined using
 * {@link org.apache.geode.cache.PartitionAttributesFactory#create()} with out calling any of its
 * mutator methods e.g.
 * {@link org.apache.geode.cache.PartitionAttributesFactory#setLocalMaxMemory(int)}
 *
 * Also see {@link org.apache.geode.cache.DataPolicy#PARTITION}.
 * 
 * @since GemFire 5.0
 * 
 */
public interface PartitionAttributes {
  /**
   * returns entryTimeToLive in ExpirationAttributes.
   * 
   * @return expirationAttributes
   */
  // public ExpirationAttributes getEntryTimeToLive();

  /**
   * returns entryIdleTimeout in ExpirationAttributes.
   * 
   * @return expirationAttributes
   */
  // public ExpirationAttributes getEntryIdleTimeout();

  /**
   * The number of Backups for an entry in PartitionedRegion. This value should be between 0 and 3
   * (for a total of 1 to 4 instances of the data). The default value is 0.
   * 
   * @return redundantCopies.
   */
  public int getRedundantCopies();

  /**
   * This method returns the maximum total size of the region in megabytes.
   * 
   * @deprecated use getTotalMaxMemory() instead
   * @return total size in megabytes.
   */
  @Deprecated
  public long getTotalSize();

  /**
   * This method returns the maximum total size of the region, in megabytes. Default value is
   * Integer.MAX_VALUE.
   * 
   * @return maximum size of the partitioned region, in megabytes
   */
  public long getTotalMaxMemory();

  /**
   * This method returns total number of buckets for a PartitionedRegion. Default number of buckets
   * for a PartitionedRegion is 113.
   * 
   * @return total number of buckets for a PartitionedRegion.
   */
  public int getTotalNumBuckets();

  /**
   * This method returns the maximum amount of local memory that can be used by the Region. By
   * default, a PartitionedRegion can contribute 90% of the maximum memory allocated to a VM.
   */
  public int getLocalMaxMemory();

  /**
   * Returns name of the colocated PartitionedRegion's name
   * 
   * @since GemFire 6.0
   */
  public String getColocatedWith();

  /**
   * This method returns local properties. There are currently no local properties defined that are
   * not also deprecated.
   * 
   * @deprecated use {@link #getLocalMaxMemory()} in GemFire 5.1 and later releases
   * @return localProperties
   */
  @Deprecated
  public Properties getLocalProperties();

  /**
   * This method returns global properties. There are currently no global properties defined that
   * are not also deprecated.
   * 
   * @deprecated use {@link #getTotalMaxMemory()} and {@link #getTotalNumBuckets()} in GemFire 5.1
   *             and later releases
   * @return globalProperties
   */
  @Deprecated
  public Properties getGlobalProperties();

  /**
   * Returns the PartitionResolver set for custom partitioning
   * 
   * @return PartitionResolver for the PartitionedRegion
   * @since GemFire 6.0
   */
  public PartitionResolver getPartitionResolver();

  /**
   * Returns the delay in milliseconds that existing members will wait before satisfying redundancy
   * after another member crashes. Default value of recoveryDelay is -1 which indicates that
   * redundancy won't be recovered if a member crashes.
   * 
   * @since GemFire 6.0
   */
  public long getRecoveryDelay();

  /**
   * Returns the delay in milliseconds that a new member will wait before trying to satisfy
   * redundancy of data hosted on other members. Default value is 0 which is to recover redundancy
   * immediately when a new member is added.
   * 
   * @since GemFire 6.0
   */
  public long getStartupRecoveryDelay();

  /**
   * Returns array of PartitionListener{s} configured on this partitioned region
   * 
   * @see PartitionListener
   * @return PartitionListener configured on this partitioned region
   * @since GemFire 6.5
   */
  public PartitionListener[] getPartitionListeners();

  /**
   * Returns FixedPartitionAttributes's list of local partitions defined on this
   * Partitioned Region
   * 
   * @since GemFire 6.6
   */
  public List getFixedPartitionAttributes();

}