Examples of org.apache.hadoop.hbase.filter.FilterList

org.apache.hadoop.hbase.filter.FilterList
Implementation of {@link Filter} that represents an ordered List of Filterswhich will be evaluated with a specified boolean operator {@link Operator#MUST_PASS_ALL}(!AND) or {@link Operator#MUST_PASS_ONE} (!OR).Since you can use Filter Lists as children of Filter Lists, you can create a hierarchy of filters to be evaluated. Defaults to {@link Operator#MUST_PASS_ALL}.
TODO: Fix creation of Configuration on serialization and deserialization.

         Scan s=new Scan(startKey);
         CompareFilter.CompareOp op=CompareFilter.CompareOp.LESS_OR_EQUAL;
         RowFilter toFilter = new RowFilter(op, new BinaryPrefixComparator(stopKey));
         boolean startInclusive=true;
         if (!startInclusive)  {
            FilterList filters = new FilterList(FilterList.Operator.MUST_PASS_ALL);
            filters.addFilter(new RowFilter(CompareFilter.CompareOp.GREATER, 
                                            new BinaryPrefixComparator(startKey)));
            filters.addFilter(new WhileMatchFilter(toFilter));
            s.setFilter(filters);
         } else {
            s.setFilter(new WhileMatchFilter(toFilter));
         }
         t=tm.beginTransaction();

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        AccessControlFilter filter = new AccessControlFilter(authManager,
            requestUser, table);


        // wrap any existing filter
        if (get.getFilter() != null) {
          FilterList wrapper = new FilterList(FilterList.Operator.MUST_PASS_ALL,
              Lists.newArrayList(filter, get.getFilter()));
          get.setFilter(wrapper);
        } else {
          get.setFilter(filter);
        }

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        AccessControlFilter filter = new AccessControlFilter(authManager,
            user, table);


        // wrap any existing filter
        if (scan.hasFilter()) {
          FilterList wrapper = new FilterList(FilterList.Operator.MUST_PASS_ALL,
              Lists.newArrayList(filter, scan.getFilter()));
          scan.setFilter(wrapper);
        } else {
          scan.setFilter(filter);
        }

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  }


  private ResultScanner buildScanner(String keyPrefix, String value, HTable ht)
      throws IOException {
    // OurFilterList allFilters = new OurFilterList();
    FilterList allFilters = new FilterList(/* FilterList.Operator.MUST_PASS_ALL */);
    allFilters.addFilter(new PrefixFilter(Bytes.toBytes(keyPrefix)));
    SingleColumnValueFilter filter = new SingleColumnValueFilter(Bytes
        .toBytes("trans-tags"), Bytes.toBytes("qual2"), CompareOp.EQUAL, Bytes
        .toBytes(value));
    filter.setFilterIfMissing(true);
    allFilters.addFilter(filter);


    // allFilters.addFilter(new
    // RowExcludingSingleColumnValueFilter(Bytes.toBytes("trans-tags"),
    // Bytes.toBytes("qual2"), CompareOp.EQUAL, Bytes.toBytes(value)));

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  }


  private InternalScanner buildScanner(String keyPrefix, String value, HRegion r)
      throws IOException {
    // Defaults FilterList.Operator.MUST_PASS_ALL.
    FilterList allFilters = new FilterList();
    allFilters.addFilter(new PrefixFilter(Bytes.toBytes(keyPrefix)));
    // Only return rows where this column value exists in the row.
    SingleColumnValueFilter filter = new SingleColumnValueFilter(Bytes.toBytes("trans-tags"),
        Bytes.toBytes("qual2"), CompareOp.EQUAL, Bytes.toBytes(value));
    filter.setFilterIfMissing(true);
    allFilters.addFilter(filter);
    Scan scan = new Scan();
    scan.addFamily(Bytes.toBytes("trans-blob"));
    scan.addFamily(Bytes.toBytes("trans-type"));
    scan.addFamily(Bytes.toBytes("trans-date"));
    scan.addFamily(Bytes.toBytes("trans-tags"));

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      put.add(family, qual1, 2L, Bytes.toBytes(2L));
      region.put(put);


      Scan idxScan = new Scan();
      idxScan.addFamily(family);
      idxScan.setFilter(new FilterList(FilterList.Operator.MUST_PASS_ALL, Arrays.<Filter> asList(
          new SingleColumnValueFilter(family, qual1, CompareOp.GREATER_OR_EQUAL,
              new BinaryComparator(Bytes.toBytes(0L))), new SingleColumnValueFilter(family, qual1,
              CompareOp.LESS_OR_EQUAL, new BinaryComparator(Bytes.toBytes(3L))))));
      InternalScanner scanner = region.getScanner(idxScan);
      List<Cell> res = new ArrayList<Cell>();

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                    return false;
                }
                // Intersect found: replace skip scan with intersected one
                scan.setFilter(newFilter);
            } else if (filter instanceof FilterList) {
                FilterList oldList = (FilterList)filter;
                FilterList newList = new FilterList(FilterList.Operator.MUST_PASS_ALL);
                for (Filter f : oldList.getFilters()) {
                    if (f instanceof SkipScanFilter) {
                        SkipScanFilter newFilter = ((SkipScanFilter)f).intersect(startKey, stopKey);
                        if (newFilter == null) {
                            return false;
                        }
                        newList.addFilter(newFilter);
                    } else {
                        newList.addFilter(f);
                    }
                }
                scan.setFilter(newList);
           }
        }

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        }
        Filter filter = scan.getFilter();
        if (filter == null) {
            scan.setFilter(andWithFilter); 
        } else if (filter instanceof FilterList && ((FilterList)filter).getOperator() == FilterList.Operator.MUST_PASS_ALL) {
            FilterList filterList = (FilterList)filter;
            List<Filter> allFilters = new ArrayList<Filter>(filterList.getFilters().size() + 1);
            allFilters.add(andWithFilter);
            allFilters.addAll(filterList.getFilters());
            scan.setFilter(new FilterList(FilterList.Operator.MUST_PASS_ALL,allFilters));
        } else {
            scan.setFilter(new FilterList(FilterList.Operator.MUST_PASS_ALL,Arrays.asList(andWithFilter, filter)));
        }
    }

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        }
        Filter filter = scan.getFilter();
        if (filter == null) {
            scan.setFilter(andWithFilter); 
        } else if (filter instanceof FilterList && ((FilterList)filter).getOperator() == FilterList.Operator.MUST_PASS_ALL) {
            FilterList filterList = (FilterList)filter;
            List<Filter> allFilters = new ArrayList<Filter>(filterList.getFilters().size() + 1);
            allFilters.addAll(filterList.getFilters());
            allFilters.add(andWithFilter);
            scan.setFilter(new FilterList(FilterList.Operator.MUST_PASS_ALL,allFilters));
        } else {
            scan.setFilter(new FilterList(FilterList.Operator.MUST_PASS_ALL,Arrays.asList(filter, andWithFilter)));
        }
    }

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public class StatementHintsCompilationTest extends BaseConnectionlessQueryTest {


   private static boolean usingSkipScan(Scan scan) {
        Filter filter = scan.getFilter();
        if (filter instanceof FilterList) {
            FilterList filterList = (FilterList) filter;
            for (Filter childFilter : filterList.getFilters()) {
                if (childFilter instanceof SkipScanFilter) {
                    return true;
                }
            }
            return false;

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