blob: 4b4e549c68ad7d2542382eb99ad9a0334662e13b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
package com.sun.star.report;
/**
* Expressions are simple computation components.
*
* Expressions are always assumed to be immutable. They are not allowed to
* change their state and it is not guaranteed, in which order they get called.
* If the expression has been called before, the last computed value will be
* available from the datarow.
*
* This construct allows us to write expressions in the form
* "Sum := Sum + Column".
*
* Multiple calls to getValue on the same expression instance must return the
* same value (assuming that the datarow passed in is the same).
*/
public interface ReportExpression
{
void setParameters(Object[] parameters);
Object getParameters();
Object getValue(DataRow row);
}
|