| 13 |
lguerin |
1 |
package org.objectweb.telosys.common.data;
|
|
|
2 |
|
|
|
3 |
import java.util.Collection;
|
|
|
4 |
|
|
|
5 |
import org.objectweb.telosys.common.TelosysException;
|
|
|
6 |
|
|
|
7 |
/**
|
|
|
8 |
* Memory DataSet <br>
|
|
|
9 |
* Special DataSet designed to be loaded from memory, using a Collection of arrays of objects<br>
|
|
|
10 |
* Use the "load(Object)" method to initialize the DataSet with a collection<br>
|
|
|
11 |
* ( for example a LinkedList of Object[] )
|
|
|
12 |
*
|
|
|
13 |
* @author Laurent GUERIN
|
|
|
14 |
*
|
|
|
15 |
*/
|
|
|
16 |
public class MemDataSet extends UpdatableDataSet
|
|
|
17 |
{
|
| 52 |
lguerin |
18 |
private static final long serialVersionUID = 1L;
|
|
|
19 |
|
|
|
20 |
//-----------------------------------------------------------------------------
|
| 13 |
lguerin |
21 |
//--- CONSTRUCTORS
|
|
|
22 |
//-----------------------------------------------------------------------------
|
|
|
23 |
/**
|
|
|
24 |
* Constructs a new void DataSet
|
|
|
25 |
*/
|
|
|
26 |
public MemDataSet()
|
|
|
27 |
{
|
|
|
28 |
super();
|
|
|
29 |
}
|
|
|
30 |
|
|
|
31 |
//-----------------------------------------------------------------------------
|
|
|
32 |
//--- PRIVATE/PROTECTED METHODS
|
|
|
33 |
//-----------------------------------------------------------------------------
|
|
|
34 |
|
|
|
35 |
|
|
|
36 |
//-----------------------------------------------------------------------------
|
|
|
37 |
//--- PUBLIC METHODS
|
|
|
38 |
//-----------------------------------------------------------------------------
|
|
|
39 |
|
|
|
40 |
//-----------------------------------------------------------------------------
|
|
|
41 |
/* (non-Javadoc)
|
|
|
42 |
* @see org.objectweb.telosys.common.data.DataSet#load()
|
|
|
43 |
*/
|
|
|
44 |
public int load() throws TelosysException
|
|
|
45 |
{
|
|
|
46 |
//--- Initialize the DataSet ( prepare to load )
|
|
|
47 |
initBeforeLoad();
|
|
|
48 |
//--- Return the number of rows in the DataSet
|
|
|
49 |
return getRowCount();
|
|
|
50 |
}
|
|
|
51 |
|
|
|
52 |
//-----------------------------------------------------------------------------
|
|
|
53 |
/* (non-Javadoc)
|
|
|
54 |
* @see org.objectweb.telosys.common.data.DataSet#load(java.lang.Object)
|
|
|
55 |
*/
|
|
|
56 |
public int load(Object obj) throws TelosysException
|
|
|
57 |
{
|
|
|
58 |
return init(obj);
|
|
|
59 |
}
|
|
|
60 |
|
|
|
61 |
//-----------------------------------------------------------------------------
|
|
|
62 |
/**
|
| 138 |
lguerin |
63 |
* Initializes the DataSet with the given collection <br>
|
|
|
64 |
*
|
|
|
65 |
* @param obj a collection of Object[], or Object[][]
|
| 13 |
lguerin |
66 |
* @return
|
|
|
67 |
* @throws TelosysException
|
|
|
68 |
*/
|
|
|
69 |
private int init(Object obj) throws TelosysException
|
|
|
70 |
{
|
|
|
71 |
if ( obj == null )
|
|
|
72 |
{
|
|
|
73 |
throw new TelosysException("load(obj) : parameter is null");
|
|
|
74 |
}
|
|
|
75 |
|
|
|
76 |
//--- Initialize the DataSet ( prepare to load )
|
|
|
77 |
initBeforeLoad();
|
|
|
78 |
|
|
|
79 |
if ( obj instanceof Collection ) // Collection of "Object[]"
|
|
|
80 |
{
|
| 138 |
lguerin |
81 |
Collection<?> collection = (Collection<?>) obj;
|
|
|
82 |
for ( Object oRow : collection )
|
| 13 |
lguerin |
83 |
{
|
|
|
84 |
if ( oRow instanceof Object[] )
|
|
|
85 |
{
|
|
|
86 |
Object[] values = (Object[]) oRow ;
|
|
|
87 |
DataRow dr = new DataRow( values.length, values);
|
|
|
88 |
super.addRow(dr);
|
|
|
89 |
}
|
| 138 |
lguerin |
90 |
else {
|
|
|
91 |
throw new TelosysException("Invalid row type (not Object[]) " );
|
|
|
92 |
}
|
| 13 |
lguerin |
93 |
}
|
|
|
94 |
}
|
| 138 |
lguerin |
95 |
else if ( obj instanceof Object[][] ) // Array of "Object[]"
|
| 13 |
lguerin |
96 |
{
|
| 138 |
lguerin |
97 |
Object[][] array = (Object[][]) obj;
|
|
|
98 |
for ( Object[] oRow : array )
|
|
|
99 |
{
|
|
|
100 |
DataRow dr = new DataRow( oRow.length, oRow);
|
|
|
101 |
super.addRow(dr);
|
|
|
102 |
}
|
| 13 |
lguerin |
103 |
}
|
|
|
104 |
else
|
|
|
105 |
{
|
| 138 |
lguerin |
106 |
throw new TelosysException("Invalid parameter " + obj.getClass().getName() + " ( not a collection or array of Object[] )" );
|
| 13 |
lguerin |
107 |
}
|
|
|
108 |
|
|
|
109 |
//--- Return the number of rows in the DataSet
|
|
|
110 |
return getRowCount();
|
|
|
111 |
}
|
|
|
112 |
|
|
|
113 |
//-----------------------------------------------------------------------------
|
|
|
114 |
//-----------------------------------------------------------------------------
|
|
|
115 |
}
|
telosys