KeyspaceOperationCallback.java

package me.prettyprint.cassandra.model;

import me.prettyprint.cassandra.service.KeyspaceService;
import me.prettyprint.hector.api.exceptions.HectorException;

/**
 * A callback template used by the package classes. Not for external use.
 *
 * @author Ran Tavory
 *
 * @param <T>
 */
public abstract class KeyspaceOperationCallback<T> {
  // TODO remove
  public abstract T doInKeyspace(final KeyspaceService ks) throws HectorException;

  public ExecutionResult<T> doInKeyspaceAndMeasure(final KeyspaceService ks) {
    long start = System.nanoTime();
    T value = null;
    value = doInKeyspace(ks);

    return new ExecutionResult<T>(value, System.nanoTime() - start, ks.getCassandraHost());
  }

}