Add an IndexReader to the collection of readers that are to be merged

close all IndexReaders that have been added. Should not be called before merge().

Determines whether the specified Object is equal to the current Object.

Allows an Object to attempt to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection.

Serves as a hash function for a particular type.

Gets the Type of the current instance.

Creates a shallow copy of the current Object.

Merges the readers specified by the {@link #add} method into the directory passed to the constructor

Returns a String that represents the current Object.