*
* @param maxBefore maximum number of words to be considered before of the anchor.
* @param maxAfter maximum number of words to be considered after the anchor.
*/
public AnchorExtractor( int maxBefore, int maxAnchor, int maxAfter ) {
preAnchor = new CircularCharArrayBuffer( maxBefore );
anchor = new MutableString( maxAnchor );
postAnchor = new MutableString( maxAfter );
result = new MutableString( maxBefore + maxAnchor + maxAfter );
this.maxAfter = maxAfter;
this.maxAnchor = maxAnchor;