Examples with ScanSourcePredicate edu.uci.ics.textdb.exp.source.scan.ScanSourcePredicate used on opensource projects

Example 21 with ScanSourcePredicate

use of edu.uci.ics.textdb.exp.source.scan.ScanSourcePredicate in project textdb by TextDB.

the class SamplerTest method matchSamplerTable.

/* 
     * To test if the sampled tuples are equal to the first K tuples of the sampler table 
     * in both the order and content.
     */
public static boolean matchSamplerTable(List<Tuple> sampleList) throws TextDBException {
    ScanBasedSourceOperator scanSource = new ScanBasedSourceOperator(new ScanSourcePredicate(SAMPLER_TABLE));
    scanSource.open();
    ListIterator<Tuple> iter = null;
    iter = sampleList.listIterator();
    while (iter.hasNext()) {
        Tuple nextTableTuple = scanSource.getNextTuple();
        Tuple nextSampledTuple = iter.next();
        if (!nextSampledTuple.equals(nextTableTuple)) {
            scanSource.close();
            return false;
        }
    }
    scanSource.close();
    return true;
}