Package org.lealone.result

Examples of org.lealone.result.SearchRow

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     * @param session the session
     * @param id the id of the object to remove
     */
    public synchronized void removeMeta(Session session, int id) {
        if (id > 0 && !starting) {
            SearchRow r = meta.getTemplateSimpleRow(false);
            r.setValue(0, ValueInt.get(id));
            boolean wasLocked = lockMeta(session);
            Cursor cursor = metaIdIndex.find(session, r, r);
            if (cursor.next()) {
                if (SysProperties.CHECK) {
                    if (lockMode != 0 && !wasLocked) {
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    protected void closeFiles() {
    }

    private void checkMetaFree(Session session, int id) {
        SearchRow r = meta.getTemplateSimpleRow(false);
        r.setValue(0, ValueInt.get(id));
        Cursor cursor = metaIdIndex.find(session, r, r);
        if (cursor.next()) {
            DbException.throwInternalError();
        }
    }
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                int sortType = index.getIndexColumns()[0].sortType;
                if ((sortType & SortOrder.DESCENDING) != 0) {
                    first = !first;
                }
                Cursor cursor = index.findFirstOrLast(session, first);
                SearchRow row = cursor.getSearchRow();
                Value v;
                if (row == null) {
                    v = ValueNull.INSTANCE;
                } else {
                    v = row.getValue(index.getColumns()[0].getColumnId());
                }
                return v;
            default:
                DbException.throwInternalError("type=" + type);
            }
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                int sortType = index.getIndexColumns()[0].sortType;
                if ((sortType & SortOrder.DESCENDING) != 0) {
                    first = !first;
                }
                Cursor cursor = index.findFirstOrLast(session, first);
                SearchRow row = cursor.getSearchRow();
                Value v;
                if (row == null) {
                    v = ValueNull.INSTANCE;
                } else {
                    v = row.getValue(index.getColumns()[0].getColumnId());
                }
                return v;
            default:
                DbException.throwInternalError("type=" + type);
            }
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        }
        return tableNameAsBytes;
    }

    public Value getStartRowKeyValue() {
        SearchRow start = tableFilter.getStartSearchRow();

        if (start != null) {
            if (tableFilter.getIndex() instanceof HBasePrimaryIndex)
                return start.getRowKey();
            else if (tableFilter.getIndex() instanceof HBaseDelegateIndex)
                return start.getValue(tableFilter.getIndex().getColumns()[0].getColumnId());
            else if (tableFilter.getIndex() instanceof HBaseSecondaryIndex)
                return ValueBytes.getNoCopy(((HBaseSecondaryIndex) tableFilter.getIndex()).getKey(start));
            else
                return start.getRowKey();
        }
        return null;
    }
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        }
        return null;
    }

    public Value getEndRowKeyValue() {
        SearchRow end = tableFilter.getEndSearchRow();
        if (end != null) {
            if (tableFilter.getIndex() instanceof HBasePrimaryIndex)
                return end.getRowKey();
            else if (tableFilter.getIndex() instanceof HBaseDelegateIndex)
                return end.getValue(tableFilter.getIndex().getColumns()[0].getColumnId());
            else if (tableFilter.getIndex() instanceof HBaseSecondaryIndex)
                return ValueBytes.getNoCopy(((HBaseSecondaryIndex) tableFilter.getIndex()).getKey(end));
            else
                return end.getRowKey();
        }
        return null;
    }
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    public Cursor findFirstOrLast(Session session, boolean first) {
        if (first) {
            // TODO optimization: this loops through NULL elements
            Cursor cursor = find(session, null, null);
            while (cursor.next()) {
                SearchRow row = cursor.getSearchRow();
                Value v = row.getValue(firstColumn.getColumnId());
                if (v != ValueNull.INSTANCE) {
                    return cursor;
                }
            }
            return cursor;
        }
        Cursor baseCursor = base.findFirstOrLast(session, false);
        Cursor deltaCursor = delta.findFirstOrLast(session, false);
        MultiVersionCursor cursor = new MultiVersionCursor(session, this, baseCursor, deltaCursor, sync);
        cursor.loadCurrent();
        // TODO optimization: this loops through NULL elements
        while (cursor.previous()) {
            SearchRow row = cursor.getSearchRow();
            if (row == null) {
                break;
            }
            Value v = row.getValue(firstColumn.getColumnId());
            if (v != ValueNull.INSTANCE) {
                return cursor;
            }
        }
        return cursor;
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        }
        if (first) {
            // TODO optimization: this loops through NULL
            Cursor cursor = find(session, null, null);
            while (cursor.next()) {
                SearchRow row = cursor.getSearchRow();
                Value v = row.getValue(columnIds[0]);
                if (v != ValueNull.INSTANCE) {
                    return cursor;
                }
            }
            return cursor;
        }
        TreeNode x = root, n;
        while (x != null) {
            n = x.right;
            if (n == null) {
                break;
            }
            x = n;
        }
        TreeCursor cursor = new TreeCursor(this, x, null, null);
        if (x == null) {
            return cursor;
        }
        // TODO optimization: this loops through NULL elements
        do {
            SearchRow row = cursor.getSearchRow();
            if (row == null) {
                break;
            }
            Value v = row.getValue(columnIds[0]);
            if (v != ValueNull.INSTANCE) {
                return cursor;
            }
        } while (cursor.previous());
        return cursor;
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    private boolean existsRow(Session session, Index searchIndex, SearchRow check, Row excluding) {
        Table searchTable = searchIndex.getTable();
        searchTable.lock(session, false, false);
        Cursor cursor = searchIndex.find(session, check, check);
        while (cursor.next()) {
            SearchRow found;
            found = cursor.getSearchRow();
            if (excluding != null && found.getKey() == excluding.getKey()) {
                continue;
            }
            Column[] cols = searchIndex.getColumns();
            boolean allEqual = true;
            int len = Math.min(columns.length, cols.length);
            for (int i = 0; i < len; i++) {
                int idx = cols[i].getColumnId();
                Value c = check.getValue(idx);
                Value f = found.getValue(idx);
                if (searchTable.compareTypeSave(c, f) != 0) {
                    allEqual = false;
                    break;
                }
            }
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    private boolean isEqual(Row oldRow, Row newRow) {
        return refIndex.compareRows(oldRow, newRow) == 0;
    }

    private void checkRow(Session session, Row oldRow) {
        SearchRow check = table.getTemplateSimpleRow(false);
        for (int i = 0, len = columns.length; i < len; i++) {
            Column refCol = refColumns[i].column;
            int refIdx = refCol.getColumnId();
            Column col = columns[i].column;
            Value v = col.convert(oldRow.getValue(refIdx));
            if (v == ValueNull.INSTANCE) {
                return;
            }
            check.setValue(col.getColumnId(), v);
        }
        // exclude the row only for self-referencing constraints
        Row excluding = (refTable == table) ? oldRow : null;
        if (existsRow(session, index, check, excluding)) {
            throw DbException.get(ErrorCode.REFERENTIAL_INTEGRITY_VIOLATED_CHILD_EXISTS_1, getShortDescription(index, check));
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Related Classes of org.lealone.result.SearchRow

  • org.lealone.command.dml.Select
  • org.lealone.dbobject.constraint.ConstraintReferential
  • org.lealone.dbobject.index.MultiVersionIndex
  • org.lealone.dbobject.index.TreeIndex
  • org.lealone.engine.Database
  • org.lealone.expression.Aggregate
  • org.lealone.hbase.command.dml.WhereClauseSupport
  • org.lealone.hbase.dbobject.index.HBaseSecondaryIndex
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