Examples with OpAttr org.apache.hadoop.hive.ql.optimizer.calcite.translator.opconventer.HiveOpConverter.OpAttr used on opensource projects

Example 21 with OpAttr

use of org.apache.hadoop.hive.ql.optimizer.calcite.translator.opconventer.HiveOpConverter.OpAttr in project hive by apache.

the class HiveTableScanVisitor method visit.

/**
 * TODO: 1. PPD needs to get pushed in to TS.
 */
@Override
OpAttr visit(HiveTableScan scanRel) {
    if (LOG.isDebugEnabled()) {
        LOG.debug("Translating operator rel#" + scanRel.getId() + ":" + scanRel.getRelTypeName() + " with row type: [" + scanRel.getRowType() + "]");
    }
    RelOptHiveTable ht = (RelOptHiveTable) scanRel.getTable();
    // 1. Setup TableScan Desc
    // 1.1 Build col details used by scan
    ArrayList<ColumnInfo> colInfos = new ArrayList<ColumnInfo>();
    List<VirtualColumn> virtualCols = new ArrayList<VirtualColumn>();
    List<Integer> neededColumnIDs = new ArrayList<Integer>();
    List<String> neededColumnNames = new ArrayList<String>();
    Set<Integer> vcolsInCalcite = new HashSet<Integer>();
    List<String> partColNames = new ArrayList<String>();
    Map<Integer, VirtualColumn> vColsMap = HiveCalciteUtil.getVColsMap(ht.getVirtualCols(), ht.getNoOfNonVirtualCols());
    Map<Integer, ColumnInfo> posToPartColInfo = ht.getPartColInfoMap();
    Map<Integer, ColumnInfo> posToNonPartColInfo = ht.getNonPartColInfoMap();
    List<Integer> neededColIndxsFrmReloptHT = scanRel.getNeededColIndxsFrmReloptHT();
    List<String> scanColNames = scanRel.getRowType().getFieldNames();
    String tableAlias = scanRel.getConcatQbIDAlias();
    String colName;
    ColumnInfo colInfo;
    VirtualColumn vc;
    for (int index = 0; index < scanRel.getRowType().getFieldList().size(); index++) {
        colName = scanColNames.get(index);
        if (vColsMap.containsKey(index)) {
            vc = vColsMap.get(index);
            virtualCols.add(vc);
            colInfo = new ColumnInfo(vc.getName(), vc.getTypeInfo(), tableAlias, true, vc.getIsHidden());
            vcolsInCalcite.add(index);
        } else if (posToPartColInfo.containsKey(index)) {
            partColNames.add(colName);
            colInfo = posToPartColInfo.get(index);
            vcolsInCalcite.add(index);
        } else {
            colInfo = posToNonPartColInfo.get(index);
        }
        colInfos.add(colInfo);
        if (neededColIndxsFrmReloptHT.contains(index)) {
            neededColumnIDs.add(index);
            neededColumnNames.add(colName);
        }
    }
    // 1.2 Create TableScanDesc
    TableScanDesc tsd = new TableScanDesc(tableAlias, virtualCols, ht.getHiveTableMD());
    // 1.3. Set Partition cols in TSDesc
    tsd.setPartColumns(partColNames);
    // 1.4. Set needed cols in TSDesc
    tsd.setNeededColumnIDs(neededColumnIDs);
    tsd.setNeededColumns(neededColumnNames);
    // 2. Setup TableScan
    TableScanOperator ts = (TableScanOperator) OperatorFactory.get(hiveOpConverter.getSemanticAnalyzer().getOpContext(), tsd, new RowSchema(colInfos));
    // tablescan with same alias.
    if (hiveOpConverter.getTopOps().get(tableAlias) != null) {
        tableAlias = tableAlias + hiveOpConverter.getUniqueCounter();
    }
    hiveOpConverter.getTopOps().put(tableAlias, ts);
    if (LOG.isDebugEnabled()) {
        LOG.debug("Generated " + ts + " with row schema: [" + ts.getSchema() + "]");
    }
    return new OpAttr(tableAlias, vcolsInCalcite, ts);
}