public DegenerateQueryPlan(
StatementContext context, FilterableStatement statement, TableRef table) {
super(
context,
statement,
table,
RowProjector.EMPTY_PROJECTOR,
PhoenixParameterMetaData.EMPTY_PARAMETER_META_DATA,
null,
OrderBy.EMPTY_ORDER_BY,
GroupBy.EMPTY_GROUP_BY,
null);
context.setScanRanges(ScanRanges.NOTHING);
}
private static List<KeyRange> getSplits(
final TableRef tableRef,
final Scan scan,
final List<HRegionLocation> regions,
final ScanRanges scanRanges)
throws SQLException {
final List<TableRef> tableRefs = Collections.singletonList(tableRef);
ColumnResolver resolver =
new ColumnResolver() {
@Override
public List<PFunction> getFunctions() {
return Collections.emptyList();
}
@Override
public List<TableRef> getTables() {
return tableRefs;
}
@Override
public TableRef resolveTable(String schemaName, String tableName) throws SQLException {
throw new UnsupportedOperationException();
}
@Override
public ColumnRef resolveColumn(String schemaName, String tableName, String colName)
throws SQLException {
throw new UnsupportedOperationException();
}
@Override
public PFunction resolveFunction(String functionName) throws SQLException {
throw new UnsupportedOperationException();
}
@Override
public boolean hasUDFs() {
return false;
}
};
PhoenixConnection connection =
DriverManager.getConnection(getUrl(), PropertiesUtil.deepCopy(TEST_PROPERTIES))
.unwrap(PhoenixConnection.class);
final PhoenixStatement statement = new PhoenixStatement(connection);
final StatementContext context =
new StatementContext(statement, resolver, scan, new SequenceManager(statement));
context.setScanRanges(scanRanges);
ParallelIterators parallelIterators =
new ParallelIterators(
new QueryPlan() {
@Override
public StatementContext getContext() {
return context;
}
@Override
public ParameterMetaData getParameterMetaData() {
return PhoenixParameterMetaData.EMPTY_PARAMETER_META_DATA;
}
@Override
public ExplainPlan getExplainPlan() throws SQLException {
return ExplainPlan.EMPTY_PLAN;
}
@Override
public ResultIterator iterator(ParallelScanGrouper scanGrouper) throws SQLException {
return ResultIterator.EMPTY_ITERATOR;
}
@Override
public ResultIterator iterator() throws SQLException {
return ResultIterator.EMPTY_ITERATOR;
}
@Override
public long getEstimatedSize() {
return 0;
}
@Override
public TableRef getTableRef() {
return tableRef;
}
@Override
public RowProjector getProjector() {
return RowProjector.EMPTY_PROJECTOR;
}
@Override
public Integer getLimit() {
return null;
}
@Override
public OrderBy getOrderBy() {
return OrderBy.EMPTY_ORDER_BY;
}
@Override
public GroupBy getGroupBy() {
return GroupBy.EMPTY_GROUP_BY;
}
@Override
public List<KeyRange> getSplits() {
return null;
}
@Override
public FilterableStatement getStatement() {
return SelectStatement.SELECT_ONE;
}
@Override
public boolean isDegenerate() {
return false;
}
@Override
public boolean isRowKeyOrdered() {
return true;
}
@Override
public List<List<Scan>> getScans() {
return null;
}
@Override
public boolean useRoundRobinIterator() {
return false;
}
},
null,
new SpoolingResultIterator.SpoolingResultIteratorFactory(
context.getConnection().getQueryServices()));
List<KeyRange> keyRanges = parallelIterators.getSplits();
return keyRanges;
}
