Package org.lealone.value

Examples of org.lealone.value.Value

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        this.left = left;
        this.valueList = values;
    }

    public Value getValue(Session session) {
        Value l = left.getValue(session);
        if (l == ValueNull.INSTANCE) {
            return l;
        }
        boolean result = false;
        boolean hasNull = false;
        for (Expression e : valueList) {
            Value r = e.getValue(session);
            if (r == ValueNull.INSTANCE) {
                hasNull = true;
            } else {
                r = r.convertTo(l.getType());
                result = Comparison.compareNotNull(database, l, r, Comparison.EQUAL);
                if (result) {
                    break;
                }
            }
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        }
        if (!onlyColumnList) {
            Value[][] list = new Value[len][];
            int rows = 0;
            for (int i = 0; i < len; i++) {
                Value v = argList[i].getValue(session);
                if (v == ValueNull.INSTANCE) {
                    list[i] = new Value[0];
                } else {
                    ValueArray array = (ValueArray) v.convertTo(Value.ARRAY);
                    Value[] l = array.getList();
                    list[i] = l;
                    rows = Math.max(rows, l.length);
                }
            }
            for (int row = 0; row < rows; row++) {
                Value[] r = new Value[len];
                for (int j = 0; j < len; j++) {
                    Value[] l = list[j];
                    Value v;
                    if (l.length <= row) {
                        v = ValueNull.INSTANCE;
                    } else {
                        Column c = columnList[j];
                        v = l[row];
                        v = c.convert(v);
                        v = v.convertPrecision(c.getPrecision(), false);
                        v = v.convertScale(true, c.getScale());
                    }
                    r[j] = v;
                }
                result.addRow(r);
            }
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        int m = Constants.MEMORY_ROW;
        if (data != null) {
            int len = data.length;
            m += Constants.MEMORY_OBJECT + len * Constants.MEMORY_POINTER;
            for (int i = 0; i < len; i++) {
                Value v = data[i];
                if (v != null) {
                    m += v.getMemory();
                }
            }
        }
        this.memory = m;
        return m;
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    public void truncate(Session session) {
        reset();
    }

    public void add(Session session, Row row) {
        Value key = row.getValue(indexColumn);
        ArrayList<Long> positions = rows.get(key);
        if (positions == null) {
            positions = New.arrayList();
            rows.put(key, positions);
        }
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    public void remove(Session session, Row row) {
        if (rowCount == 1) {
            // last row in table
            reset();
        } else {
            Value key = row.getValue(indexColumn);
            ArrayList<Long> positions = rows.get(key);
            if (positions.size() == 1) {
                // last row with such key
                rows.remove(key);
            } else {
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        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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                        break;
                    }
                    int len = columns.length;
                    Value[] values = new Value[len];
                    for (int i = 0; i < len; i++) {
                        Value v = transfer.readValue();
                        values[i] = v;
                    }
                    result.add(values);
                }
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                }
                while (rs.next()) {
                    writeByte((byte) 1);
                    for (int i = 0; i < columnCount; i++) {
                        int t = DataType.convertSQLTypeToValueType(meta.getColumnType(i + 1));
                        Value val = DataType.readValue(null, rs, i + 1, t);
                        writeValue(val);
                    }
                }
                writeByte((byte) 0);
                rs.beforeFirst();
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                }
                while (rs.next()) {
                    len++;
                    for (int i = 0; i < columnCount; i++) {
                        int t = DataType.convertSQLTypeToValueType(meta.getColumnType(i + 1));
                        Value val = DataType.readValue(null, rs, i + 1, t);
                        len += getValueLen(val, handler);
                    }
                }
                len++;
                rs.beforeFirst();
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            }
        }
        session = null;
        try {
            for (ParameterInterface p : parameters) {
                Value v = p.getParamValue();
                if (v != null) {
                    v.close();
                }
            }
        } catch (DbException e) {
            trace.error(e, "close");
        }
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Related Classes of org.lealone.value.Value

  • org.lealone.command.CommandContainer
  • org.lealone.command.CommandRemote
  • org.lealone.command.ddl.CreateConstant
  • org.lealone.command.dml.Call
  • org.lealone.command.dml.Delete
  • org.lealone.command.dml.Insert
  • org.lealone.command.dml.Merge
  • org.lealone.command.dml.Query
  • org.lealone.command.dml.ScriptCommand
  • org.lealone.command.dml.Select
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