Java Code Examples for org.apache.phoenix.schema.PTable#getColumnFamilies()

The following examples show how to use org.apache.phoenix.schema.PTable#getColumnFamilies() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: ConnectionQueryServicesImpl.java From phoenix with Apache License 2.0

5 votes

private HashSet<String> existingColumnFamilies(PTable table) {
    List<PColumnFamily> cfs = table.getColumnFamilies();
    HashSet<String> cfNames = new HashSet<>(cfs.size());
    for (PColumnFamily cf : table.getColumnFamilies()) {
        cfNames.add(cf.getName().getString());
    }
    return cfNames;
}

Example 2

Source File: ProjectionCompiler.java From phoenix with Apache License 2.0

5 votes

private static void projectAllColumnFamilies(PTable table, Scan scan) {
    // Will project all known/declared column families
    scan.getFamilyMap().clear();
    for (PColumnFamily family : table.getColumnFamilies()) {
        scan.addFamily(family.getName().getBytes());
    }
}

Example 3

Source File: GuidePostsCacheWrapper.java From phoenix with Apache License 2.0

5 votes

public void invalidateAll(PTable table) {
    Preconditions.checkNotNull(table);
    byte[] physicalName = table.getPhysicalName().getBytes();
    List<PColumnFamily> families = table.getColumnFamilies();
    if (families.isEmpty()) {
        invalidate(new GuidePostsKey(physicalName, SchemaUtil.getEmptyColumnFamily(table)));
    } else {
        for (PColumnFamily family : families) {
            invalidate(new GuidePostsKey(physicalName, family.getName().getBytes()));
        }
    }
}

Example 4

Source File: ProjectionCompiler.java From phoenix with Apache License 2.0

5 votes

private static void projectAllColumnFamilies(PTable table, Scan scan) {
    // Will project all known/declared column families
    scan.getFamilyMap().clear();
    for (PColumnFamily family : table.getColumnFamilies()) {
        scan.addFamily(family.getName().getBytes());
    }
}

Example 5

Source File: BaseResultIterators.java From phoenix with Apache License 2.0

4 votes

public BaseResultIterators(QueryPlan plan, Integer perScanLimit) throws SQLException {
    super(plan.getContext(), plan.getTableRef(), plan.getGroupBy(), plan.getOrderBy(), plan.getStatement().getHint());
    this.plan = plan;
    StatementContext context = plan.getContext();
    TableRef tableRef = plan.getTableRef();
    PTable table = tableRef.getTable();
    FilterableStatement statement = plan.getStatement();
    RowProjector projector = plan.getProjector();
    physicalTableName = table.getPhysicalName().getBytes();
    tableStats = useStats() ? new MetaDataClient(context.getConnection()).getTableStats(table) : PTableStats.EMPTY_STATS;
    Scan scan = context.getScan();
    // Used to tie all the scans together during logging
    scanId = UUID.randomUUID().toString();
    Map<byte [], NavigableSet<byte []>> familyMap = scan.getFamilyMap();
    boolean keyOnlyFilter = familyMap.isEmpty() && context.getWhereCoditionColumns().isEmpty();
    if (projector.isProjectEmptyKeyValue()) {
        // If nothing projected into scan and we only have one column family, just allow everything
        // to be projected and use a FirstKeyOnlyFilter to skip from row to row. This turns out to
        // be quite a bit faster.
        // Where condition columns also will get added into familyMap
        // When where conditions are present, we can not add FirstKeyOnlyFilter at beginning.
        if (familyMap.isEmpty() && context.getWhereCoditionColumns().isEmpty()
                && table.getColumnFamilies().size() == 1) {
            // Project the one column family. We must project a column family since it's possible
            // that there are other non declared column families that we need to ignore.
            scan.addFamily(table.getColumnFamilies().get(0).getName().getBytes());
        } else {
            byte[] ecf = SchemaUtil.getEmptyColumnFamily(table);
            // Project empty key value unless the column family containing it has
            // been projected in its entirety.
            if (!familyMap.containsKey(ecf) || familyMap.get(ecf) != null) {
                scan.addColumn(ecf, QueryConstants.EMPTY_COLUMN_BYTES);
            }
        }
    } else if (table.getViewType() == ViewType.MAPPED) {
        // Since we don't have the empty key value in MAPPED tables, we must select all CFs in HRS. But only the
        // selected column values are returned back to client
        for (PColumnFamily family : table.getColumnFamilies()) {
            scan.addFamily(family.getName().getBytes());
        }
    }
    // Add FirstKeyOnlyFilter if there are no references to key value columns
    if (keyOnlyFilter) {
        ScanUtil.andFilterAtBeginning(scan, new FirstKeyOnlyFilter());
    }
    
    // TODO adding all CFs here is not correct. It should be done only after ColumnProjectionOptimization.
    if (perScanLimit != null) {
        ScanUtil.andFilterAtEnd(scan, new PageFilter(perScanLimit));
    }

    doColumnProjectionOptimization(context, scan, table, statement);
    
    this.scans = getParallelScans();
    List<KeyRange> splitRanges = Lists.newArrayListWithExpectedSize(scans.size() * ESTIMATED_GUIDEPOSTS_PER_REGION);
    for (List<Scan> scanList : scans) {
        for (Scan aScan : scanList) {
            splitRanges.add(KeyRange.getKeyRange(aScan.getStartRow(), aScan.getStopRow()));
        }
    }
    this.splits = ImmutableList.copyOf(splitRanges);
    // If split detected, this will be more than one, but that's unlikely
    this.allFutures = Lists.newArrayListWithExpectedSize(1);
}

Example 6