geode-core/src/main/java/org/apache/geode/cache/FixedPartitionAttributes.java

/*
 * 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 org.apache.geode.internal.cache.FixedPartitionAttributesImpl;

/**
 * Composite date type used to distribute the attributes for a fixed partition.
 * </p>
 *
 * {@link org.apache.geode.cache.PartitionAttributes#getFixedPartitionAttributes()} returns all
 * fixed partitions in Partitioned Region attributes.
 * </p>
 * {@link org.apache.geode.cache.PartitionAttributesFactory#addFixedPartitionAttributes(FixedPartitionAttributes)}
 * configures <code>FixedPartitionAttributes</Code> in <code>PartitionedRegionAttributes</code>
 * </p>
 *
 * @see org.apache.geode.cache.PartitionAttributes
 * @see org.apache.geode.cache.PartitionAttributesFactory
 *
 * @since GemFire 6.6
 */
public abstract class FixedPartitionAttributes {

  private static final boolean DEFAULT_PRIMARY_STATUS = false;

  private static final int DEFAULT_NUM_BUCKETS = 1;

  /**
   * Creates an instance of <code>FixedPartitionAttributes</code>.
   *
   * @param name Name of the fixed partition.
   */
  public static FixedPartitionAttributes createFixedPartition(String name) {
    return new FixedPartitionAttributesImpl().setPartitionName(name)
        .isPrimary(DEFAULT_PRIMARY_STATUS).setNumBuckets(DEFAULT_NUM_BUCKETS);
  }

  /**
   * Creates an instance of <code>FixedPartitionAttributes</code>.
   *
   * @param name Name of the fixed partition.
   * @param isPrimary True if this member is the primary for the partition.
   */
  public static FixedPartitionAttributes createFixedPartition(String name, boolean isPrimary) {
    return new FixedPartitionAttributesImpl().setPartitionName(name).isPrimary(isPrimary)
        .setNumBuckets(DEFAULT_NUM_BUCKETS);
  }

  /**
   * Creates an instance of <code>FixedPartitionAttributes</code>.
   *
   * @param name Name of the fixed partition.
   * @param isPrimary True if this member is the primary for the partition.
   * @param numBuckets Number of buckets allowed for the partition.
   */
  public static FixedPartitionAttributes createFixedPartition(String name, boolean isPrimary,
      int numBuckets) {
    return new FixedPartitionAttributesImpl().setPartitionName(name).isPrimary(isPrimary)
        .setNumBuckets(numBuckets);
  }

  /**
   * Creates an instance of <code>FixedPartitionAttributes</code>.
   *
   * @param name Name of the fixed partition.
   * @param numBuckets Number of buckets allowed for the partition.
   */
  public static FixedPartitionAttributes createFixedPartition(String name, int numBuckets) {
    return new FixedPartitionAttributesImpl().setPartitionName(name)
        .isPrimary(DEFAULT_PRIMARY_STATUS).setNumBuckets(numBuckets);
  }

  /**
   * Returns the name of the fixed partition.
   */
  public abstract String getPartitionName();

  /**
   * Returns whether this member is the primary for the partition.
   *
   * @return True if this member is the primary, false otherwise.
   */
  public abstract boolean isPrimary();

  /**
   * Returns the number of buckets allowed for the partition.
   */
  public abstract int getNumBuckets();
}