Examples of org.apache.derby.iapi.store.access.ScanController.fetch()

Package org.apache.derby.iapi.store.access

Class org.apache.derby.iapi.store.access.ScanController

Examples of org.apache.derby.iapi.store.access.ScanController.fetch()

org.apache.derby.iapi.store.access.ScanController.fetch()
Fetch the (partial) row at the current position of the Scan. The value in the destRow storable row is replaced with the value of the row at the current scan position. The columns of the destRow row must be of the same type as the actual columns in the underlying conglomerate. The number of elements in fetch must be compatible with the number of scan columns requested at the openScan call time.
A fetch can return a sub-set of the scan columns reqested at scan open time by supplying a destRow will less elements than the number of requested columns. In this case the N leftmost of the requested columns are fetched, where N = destRow.length. In the case where all columns are rested and N = 2 then columns 0 and 1 are returned. In the case where the openScan FormatableBitSet requested columns 1, 4 and 7, then columns 1 and 4 would be fetched when N = 2.
The results of a fetch() performed on a scan after next() has returned false are undefined. A fetch() performed on a scan positioned on a deleted row will throw a StandardException with state = SQLState.AM_RECORD_NOT_FOUND. Note that this can happen even if next() has returned true (for instance the client can delete the row, or if using read uncommitted another thread can delete the row after the next() call but before the fetch). @param destRow The row into which the value of the current position in the scan is to be stored. @exception StandardException Standard exception policy. @see RowUtil

      indexRow1 = getIndexRowFromHeapRow(
                  ti.getIndexRowGenerator(indexId),
                  heapCC.newRowLocationTemplate(),
                  outRow);


      scanController.fetch(indexRow1.getRowArray());


      baseRowLocation = (RowLocation)  indexRow1.getColumn(
                        indexRow1.nColumns());


            // RESOLVE paulat - remove the try catch block when track 3677 is fixed

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      indexRow1 = getIndexRowFromHeapRow(
                  ti.getIndexRowGenerator(indexId),
                  heapCC.newRowLocationTemplate(),
                  outRow);


      scanController.fetch(indexRow1.getRowArray());


      baseRowLocation = (RowLocation)  indexRow1.getColumn(
                        indexRow1.nColumns());


      boolean base_row_exists =

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      indexRow1 = getIndexRowFromHeapRow(
                  ti.getIndexRowGenerator(indexId),
                  heapCC.newRowLocationTemplate(),
                  outRow);


      scanController.fetch(indexRow1.getRowArray());


      baseRowLocation = (RowLocation)  indexRow1.getColumn(
                        indexRow1.nColumns());


            // RESOLVE paulat - remove the try catch block when track 3677 is fixed

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      indexRow1 = getIndexRowFromHeapRow(
                  ti.getIndexRowGenerator(indexId),
                  heapCC.newRowLocationTemplate(),
                  outRow);


      scanController.fetch(indexRow1.getRowArray());


      baseRowLocation = (RowLocation)  indexRow1.getColumn(
                        indexRow1.nColumns());


      boolean base_row_exists =

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        long key     = -42;
        int numrows = 0;


        while (scan.next())
        {
            scan.fetch(fetch_template);


            key = ((SQLLongint)(fetch_template[2])).getLong();


            if (ordered)
            {

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        long key        = -42;
        long numrows    = 0;


        while (scan.fetchNext(fetch_template))
        {
            scan.fetch(init_scan_template);


            // make sure all columns from fetchNext() match subsequent fetch().
            for (int i = 0; i < init_scan_template.length; i++)
            {
                if ((fetch_template[i]).compare(

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            key = key_column.getLong();


            // make sure a subsequent fetch also works.
            key_column.setValue(-42);


            scan.fetch(fetch_template);
            key2 = key_column.getLong();


            if (ordered)
            {
                if ((key != expect_key) || (key2 != expect_key))

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        long key     = -42;
        long numrows = 0;


        while (scan.next())
        {
            scan.fetch(template);


            key = ((SQLLongint)template[2]).getLong();


            if (key != expect_key)
            {

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        while (scan.next())
        {
            numrows++;


      scan.fetch(partialRow);


            if (column0.getLong() != 1)
                return(FAIL("(t_delete) column[0] value is not 1"));


            if (column1.getLong() != expect_key)

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                        null, ScanController.NA,
                        null,
                        null, ScanController.NA);


        scan.next();
        scan.fetch(index_row2.getRow());


        // delete the only row in the table, and make sure 
        // isCurrentPositionDeleted() works.
        if (scan.isCurrentPositionDeleted())
            throw T_Fail.testFailMsg("current row should not be deleted\n");

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