sizerangequery.java

一个用于搜索本地文件内容的小型搜索引擎

package queries;

import invertedList.FileRecord;
import invertedList.IQueryResult;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

import stemmer.IStemmer;

public final class SizeRangeQuery extends RangeQuery {
	private BoundryState state;
	

	
	public void setState(BoundryState state){
		this.state = state;
	}

	@Override
	public Set<FileRecord> doQuery(IQueryResult queryProcessor) {
		Set<FileRecord> result = new HashSet<FileRecord>();
		Iterator<FileRecord> iter = queryProcessor.getAllFileRecords();

		while (iter.hasNext()) {
			FileRecord currentRecord = iter.next();
			long size = currentRecord.getSize();
			
			if (state.checkBoundry(size)) {
				result.add(currentRecord);
			}
		}

		return result;
	}

	@Override
	public void setStemmer(IStemmer stemmer) {
		// TODO Auto-generated method stub
		
	}

}