org.cloudgraph.hbase.service.ResultsAssembler Maven / Gradle / Ivy

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package org.cloudgraph.hbase.service;

import java.io.IOException;

import org.apache.hadoop.hbase.client.Result;
import org.plasma.sdo.PlasmaDataGraph;

/**
 * Stores intermediate results under various single and multi-scan contexts in 
 * order to fulfill a query and may conditionally bypass results avoiding the 
 * overhead of assembling a graph.    
 * @author Scott Cinnamond
 * @since 0.5.9
 */
public interface ResultsAssembler {
	/**
	 * Returns results
	 * @return
	 */
    public PlasmaDataGraph[] getResults();
    
    /**
     * Returns the current size of the collection
     * @return the current size of the collection
     */
    public int size();
    
    /**
     * Returns whether results may be ignored under the current context.
     * @return whether results may be ignored under the current context.
     */
    public boolean canIgnoreResults();
	 
	public int getUnrecognizedResults();
	public int getIgnoredResults();
  
	public boolean isResultEndRangeReached();
   
    /**
     * Determines whether the given row is to be added to the underlying collection returning
     * true if the given row is added and false if the given row is not added.
     * @param resultRow the row
     * @return true if the given row is added and false if the given row is not added.
     * @throws IOException
     */
    public boolean collect(Result resultRow) throws IOException;
}