2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with the com.oreilly.servlet library, any library
22 * licensed under the Apache Software License, The Sun (tm) Java Advanced
23 * Imaging library (JAI), The Sun JIMI library (or with modified versions of
24 * the above that use the same license as the above), and distribute linked
25 * combinations including the two. You must obey the GNU General Public
26 * License in all respects for all of the code used other than the above
27 * mentioned libraries. If you modify this file, you may extend this exception
28 * to your version of the file, but you are not obligated to do so. If you do
29 * not wish to do so, delete this exception statement from your version.
35 import java.util.Vector;
37 import mir.entity.adapter.EntityAdapterModel;
38 import mir.entity.adapter.EntityIteratorAdapter;
39 import mir.log.LoggerWrapper;
40 import mir.util.CachingRewindableIterator;
41 import mir.util.ParameterExpander;
43 public class EntityListProducerNode extends ProducerNodeDecorator {
45 private String whereClause;
46 private String orderByClause;
47 private int batchSize;
48 private EntityAdapterModel model;
49 private String definition;
50 private String limitExpression;
51 private String skipExpression;
53 public EntityListProducerNode(String aKey,
54 EntityAdapterModel aModel, String aDefinition,
55 String aWhereClause, String anOrderByClause,
56 String aLimitExpression, String aSkipExpression, ProducerNode aSubNode) {
60 definition = aDefinition;
62 whereClause = aWhereClause;
63 orderByClause = anOrderByClause;
64 limitExpression = aLimitExpression;
65 skipExpression = aSkipExpression;
68 public EntityListProducerNode(String aKey,
69 EntityAdapterModel aModel, String aDefinition,
70 String aWhereClause, String anOrderByClause,
71 int aLimit, int aSkip, ProducerNode aSubNode) {
72 this(aKey, aModel, aDefinition, aWhereClause, anOrderByClause,
73 Integer.toString(aLimit), Integer.toString(aSkip), aSubNode);
76 public void produce(Map aValueMap, String aVerb, LoggerWrapper aLogger) throws ProducerFailure, ProducerExc {
78 int limit = ParameterExpander.evaluateIntegerExpressionWithDefault(aValueMap, limitExpression, -1);
79 int skip = ParameterExpander.evaluateIntegerExpressionWithDefault(aValueMap, skipExpression, 0);
81 if (skipExpression != null && !skipExpression.trim().equals(""))
82 skip = ParameterExpander.evaluateIntegerExpression(aValueMap, skipExpression);
84 ParameterExpander.setValueForKey(
87 new CachingRewindableIterator(
88 new EntityIteratorAdapter(
89 ParameterExpander.expandExpression( aValueMap, whereClause ),
90 ParameterExpander.expandExpression( aValueMap, orderByClause ),
100 aLogger.error("cannot retrieve list into key " + key + ": " + t.getMessage());
102 ParameterExpander.setValueForKey(
105 new CachingRewindableIterator(new Vector().iterator())
108 catch (Throwable s) {
112 super.produce(aValueMap, aVerb, aLogger);