Parser class to parse the arguments of custom solr function

AvailabilityParser.java

package com.solrExample.solr4;

import org.apache.lucene.queries.function.ValueSource;
import org.apache.solr.search.FunctionQParser;
import org.apache.solr.search.SyntaxError;
import org.apache.solr.search.ValueSourceParser;

/**
 * 
 * Created May 10, 2016 2:52:25 PM
 * @author chaitanya
 */
public class AvailabilityParser extends ValueSourceParser {

  @Override
  public ValueSource parse(FunctionQParser fp) throws SyntaxError {
    String startDateTime = fp.parseArg();
    String endDateTime = fp.parseArg();
    String fieldName = fp.parseArg();
    return new AvailabilityValueSource(startDateTime, endDateTime, fieldName);
  }
}