Package org.h2.result

Examples of org.h2.result.ResultInterface

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        this.query = query;
    }

    public Value getValue(Session session) {
        query.setSession(session);
        ResultInterface result = query.query(2);
        try {
            int rowcount = result.getRowCount();
            if (rowcount > 1) {
                throw DbException.get(ErrorCode.SCALAR_SUBQUERY_CONTAINS_MORE_THAN_ONE_ROW);
            }
            Value v;
            if (rowcount <= 0) {
                v = ValueNull.INSTANCE;
            } else {
                result.next();
                Value[] values = result.currentRow();
                if (result.getVisibleColumnCount() == 1) {
                    v = values[0];
                } else {
                    v = ValueArray.get(values);
                }
            }
            return v;
        } finally {
            result.close();
        }
    }
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        this.compareType = compareType;
    }

    public Value getValue(Session session) {
        query.setSession(session);
        ResultInterface rows = query.query(0);
        session.addTemporaryResult(rows);
        boolean hasNull = false;
        boolean result = all;
        Value l = left.getValue(session);
        boolean hasRow = false;
        while (rows.next()) {
            if (!hasRow) {
                if (l == ValueNull.INSTANCE) {
                    return l;
                }
                hasRow = true;
            }
            boolean value;
            Value r = rows.currentRow()[0];
            if (r == ValueNull.INSTANCE) {
                value = false;
                hasNull = true;
            } else {
                value = Comparison.compareNotNull(database, l, r, compareType);
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        this.query = query;
    }

    public Value getValue(Session session) {
        query.setSession(session);
        ResultInterface result = query.query(1);
        session.addTemporaryResult(result);
        boolean r = result.getRowCount() > 0;
        return ValueBoolean.get(r);
    }
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        }
        case SessionRemote.COMMAND_GET_META_DATA: {
            int id = transfer.readInt();
            int objectId = transfer.readInt();
            Command command = (Command) cache.getObject(id, false);
            ResultInterface result = command.getMetaData();
            cache.addObject(objectId, result);
            int columnCount = result.getVisibleColumnCount();
            transfer.writeInt(SessionRemote.STATUS_OK).writeInt(columnCount).writeInt(0);
            for (int i = 0; i < columnCount; i++) {
                ResultColumn.writeColumn(transfer, result, i);
            }
            transfer.flush();
            break;
        }
        case SessionRemote.COMMAND_EXECUTE_QUERY: {
            int id = transfer.readInt();
            int objectId = transfer.readInt();
            int maxRows = transfer.readInt();
            int fetchSize = transfer.readInt();
            Command command = (Command) cache.getObject(id, false);
            setParameters(command);
            int old = session.getModificationId();
            ResultInterface result = command.executeQuery(maxRows, false);
            cache.addObject(objectId, result);
            int columnCount = result.getVisibleColumnCount();
            int state = getState(old);
            transfer.writeInt(state).writeInt(columnCount);
            int rowCount = result.getRowCount();
            transfer.writeInt(rowCount);
            for (int i = 0; i < columnCount; i++) {
                ResultColumn.writeColumn(transfer, result, i);
            }
            int fetch = Math.min(rowCount, fetchSize);
            for (int i = 0; i < fetch; i++) {
                sendRow(result);
            }
            transfer.flush();
            break;
        }
        case SessionRemote.COMMAND_EXECUTE_UPDATE: {
            int id = transfer.readInt();
            Command command = (Command) cache.getObject(id, false);
            setParameters(command);
            int old = session.getModificationId();
            int updateCount = command.executeUpdate();
            int status;
            if (session.isClosed()) {
                status = SessionRemote.STATUS_CLOSED;
            } else {
                status = getState(old);
            }
            transfer.writeInt(status).writeInt(updateCount).writeBoolean(session.getAutoCommit());
            transfer.flush();
            break;
        }
        case SessionRemote.COMMAND_CLOSE: {
            int id = transfer.readInt();
            Command command = (Command) cache.getObject(id, true);
            if (command != null) {
                command.close();
                cache.freeObject(id);
            }
            break;
        }
        case SessionRemote.RESULT_FETCH_ROWS: {
            int id = transfer.readInt();
            int count = transfer.readInt();
            ResultInterface result = (ResultInterface) cache.getObject(id, false);
            transfer.writeInt(SessionRemote.STATUS_OK);
            for (int i = 0; i < count; i++) {
                sendRow(result);
            }
            transfer.flush();
            break;
        }
        case SessionRemote.RESULT_RESET: {
            int id = transfer.readInt();
            ResultInterface result = (ResultInterface) cache.getObject(id, false);
            result.reset();
            break;
        }
        case SessionRemote.RESULT_CLOSE: {
            int id = transfer.readInt();
            ResultInterface result = (ResultInterface) cache.getObject(id, true);
            if (result != null) {
                result.close();
                cache.freeObject(id);
            }
            break;
        }
        case SessionRemote.CHANGE_ID: {
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            right.setDistinct(true);
            break;
        default:
            DbException.throwInternalError("type=" + unionType);
        }
        ResultInterface l = left.query(0);
        ResultInterface r = right.query(0);
        l.reset();
        r.reset();
        switch (unionType) {
        case UNION_ALL:
        case UNION: {
            while (l.next()) {
                result.addRow(convert(l.currentRow(), columnCount));
            }
            while (r.next()) {
                result.addRow(convert(r.currentRow(), columnCount));
            }
            break;
        }
        case EXCEPT: {
            while (l.next()) {
                result.addRow(convert(l.currentRow(), columnCount));
            }
            while (r.next()) {
                result.removeDistinct(convert(r.currentRow(), columnCount));
            }
            break;
        }
        case INTERSECT: {
            LocalResult temp = new LocalResult(session, expressionArray, columnCount);
            temp.setDistinct();
            while (l.next()) {
                temp.addRow(convert(l.currentRow(), columnCount));
            }
            while (r.next()) {
                Value[] values = convert(r.currentRow(), columnCount);
                if (temp.containsDistinct(values)) {
                    result.addRow(values);
                }
            }
            break;
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                    table.fireAfterRow(session, null, newRow, false);
                }
                count++;
            }
        } else {
            ResultInterface rows = query.query(0);
            count = 0;
            table.lock(session, true, false);
            while (rows.next()) {
                count++;
                Value[] r = rows.currentRow();
                Row newRow = table.getTemplateRow();
                setCurrentRowNumber(count);
                for (int j = 0; j < columns.length; j++) {
                    Column c = columns[j];
                    int index = c.getColumnId();
                    try {
                        Value v = c.convert(r[j]);
                        newRow.setValue(index, v);
                    } catch (DbException ex) {
                        throw setRow(ex, count, getSQL(r));
                    }
                }
                table.validateConvertUpdateSequence(session, newRow);
                boolean done = table.fireBeforeRow(session, null, newRow);
                if (!done) {
                    table.addRow(session, newRow);
                    session.log(table, UndoLogRecord.INSERT, newRow);
                    table.fireAfterRow(session, null, newRow, false);
                }
            }
            rows.close();
        }
        table.fire(session, Trigger.INSERT, false);
        return count;
    }
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        executeRemaining();
        return updateCount;
    }

    public ResultInterface query(int maxrows) {
        ResultInterface result = command.query(maxrows);
        executeRemaining();
        return result;
    }
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        if (session.getDatabase().isStarting()) {
            // don't check at startup
            return;
        }
        String sql = "SELECT 1 FROM " + filter.getTable().getSQL() + " WHERE NOT(" + expr.getSQL() + ")";
        ResultInterface r = session.prepare(sql).query(1);
        if (r.next()) {
            throw DbException.get(ErrorCode.CHECK_CONSTRAINT_VIOLATED_1, getName());
        }
    }
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    public ResultInterface query(int maxrows) {
        recompileIfRequired();
        // TODO query time: should keep lock time separate from running time
        start();
        prepared.checkParameters();
        ResultInterface result = prepared.query(maxrows);
        prepared.trace(startTime, result.getRowCount());
        return result;
    }
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            checkClosed();
            closeOldResultSet();
            sql = conn.translateSQL(sql, escapeProcessing);
            synchronized (session) {
                CommandInterface command = conn.prepareCommand(sql, fetchSize);
                ResultInterface result;
                boolean scrollable = resultSetType != ResultSet.TYPE_FORWARD_ONLY;
                boolean updatable = resultSetConcurrency == ResultSet.CONCUR_UPDATABLE;
                setExecutingStatement(command);
                try {
                    result = command.executeQuery(maxRows, scrollable);
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