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• sort-connector-elasticsearch7-v1.18
• 2.0.0
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• ArraySizingStrategy.java

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com.carrotsearch.hppc.ArraySizingStrategy Maven / Gradle / Ivy

package com.carrotsearch.hppc;

/**
 * Resizing (growth) strategy for array-backed buffers.
 */
public interface ArraySizingStrategy {
  /**
   * @param currentBufferLength
   *          Current size of the array (buffer). This number should comply with
   *          the strategy's policies (it is a result of initial rounding or
   *          further growCalls). It can also be zero, indicating the growth
   *          from an empty buffer.
   *
   * @param elementsCount
   *          Number of elements stored in the buffer.
   * 
   * @param expectedAdditions
   *          Expected number of additions (resize hint).
   * 
   * @return Must return a new size at least as big as to hold
   *         elementsCount + expectedAdditions.
   * 
   * @throws BufferAllocationException
   *           If the sizing strategy cannot grow the buffer (for example due to
   *           constraints or memory limits).
   */
  int grow(int currentBufferLength, int elementsCount, int expectedAdditions) throws BufferAllocationException;
}