1 /* ====================================================================
2 * License:
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
14 * distribution.
15 *
16 * 3. The end-user documentation included with the redistribution,
17 * if any, must include the following acknowledgment:
18 * "This product includes software developed by
19 * Robert Half International (http://www.rhi.com/)."
20 * Alternately, this acknowledgment may appear in the software itself,
21 * if and wherever such third-party acknowledgments normally appear.
22 *
23 * 4. The names "Parc", "RHI", and "Robert Half International" must
24 * not be used to endorse or promote products derived from this
25 * software without prior written permission. For written
26 * permission, please contact pete.mckinstry@rhi.com.
27 *
28 * 5. Products derived from this software may not be called "PARC",
29 * nor may "PARC" appear in their name, without prior written
30 * permission of Robert Half International.
31 *
32 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
33 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
34 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
35 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
36 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
37 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
38 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
39 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
40 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
41 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
42 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 * SUCH DAMAGE.
44 * ====================================================================
45 *
46 */
47 package examples;
48
49 import com.rhi.architecture.parc.adapter.AbstractInputAdapter;
50 import com.rhi.architecture.parc.ProcessingException;
51
52 import java.util.ArrayList;
53 import java.util.Collection;
54
55 /***
56 * This class is an example of how one would write an InputAdapter. An input
57 * adapter implements a single loadBatch() method that selects a set of work and
58 * returns it. The framework takes the Collection & pushes it into the first
59 * channel where the pipeline begins work on it. Typically the loadBatch()
60 * method would read records from a Messaging System, or a DB Table, or a flat
61 * file, but in this simplest possible case, it just create a bunch of records
62 * out of thin air and passes them on to the pipeline.
63 *
64 * @author <a href="mailto:pmckinstry@users.sourceforge.net">Pete McKinstry</a>
65 */
66 public class MyInputAdapter extends AbstractInputAdapter {
67
68 /***
69 * Constructor for MyInputAdapter.
70 */
71 public MyInputAdapter() {
72 super();
73 }
74
75 /***
76 * load batch of records
77 * @return Collection
78 * @throws ProcessingException
79 */
80 protected Collection loadBatch() throws ProcessingException {
81 ArrayList batch = new ArrayList();
82 // add a bunch of unique records to the channel.
83 for (int i=0; i < 50; ++i) {
84 batch.add(new MyRecord("value" + i));
85 }
86 return batch;
87 }
88
89 }
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