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 any library licensed under the Apache Software License,
22 * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
23 * (or with modified versions of the above that use the same license as the above),
24 * and distribute linked combinations including the two. You must obey the
25 * GNU General Public License in all respects for all of the code used other than
26 * the above mentioned libraries. If you modify this file, you may extend this
27 * exception to your version of the file, but you are not obligated to do so.
28 * If you do not wish to do so, delete this exception statement from your version.
32 import java.util.List;
34 import java.util.Vector;
36 import mir.entity.adapter.EntityAdapterModel;
37 import mir.entity.adapter.EntityIteratorAdapter;
38 import mir.log.LoggerWrapper;
39 import mir.util.CachingRewindableIterator;
40 import mir.util.ParameterExpander;
42 public class EntityListProducerNode extends ProducerNodeDecorator {
44 private String whereClause;
45 private String orderByClause;
46 private String mainTablePrefix;
47 private List extraTables;
48 private int batchSize;
49 private EntityAdapterModel model;
50 private String definition;
51 private String limitExpression;
52 private String skipExpression;
54 public EntityListProducerNode(String aKey,
55 EntityAdapterModel aModel, String aMainTablePrefix, List someExtraTables,
56 String aDefinition, String aWhereClause, String anOrderByClause,
57 String aLimitExpression, String aSkipExpression, ProducerNode aSubNode) {
61 mainTablePrefix = aMainTablePrefix;
62 extraTables = someExtraTables;
63 definition = aDefinition;
65 whereClause = aWhereClause;
66 orderByClause = anOrderByClause;
67 limitExpression = aLimitExpression;
68 skipExpression = aSkipExpression;
71 public EntityListProducerNode(String aKey,
72 EntityAdapterModel aModel, String aMainTablePrefix, List someExtraTables,
73 String aDefinition, String aWhereClause, String anOrderByClause,
74 int aLimit, int aSkip, ProducerNode aSubNode) {
75 this(aKey, aModel, aMainTablePrefix, someExtraTables,
76 aDefinition, aWhereClause, anOrderByClause,
77 Integer.toString(aLimit), Integer.toString(aSkip), aSubNode);
80 public void produce(Map aValueMap, String aVerb, LoggerWrapper aLogger) throws ProducerFailure, ProducerExc {
82 int limit = ParameterExpander.evaluateIntegerExpressionWithDefault(aValueMap, limitExpression, -1);
83 int skip = ParameterExpander.evaluateIntegerExpressionWithDefault(aValueMap, skipExpression, 0);
85 if (skipExpression != null && !skipExpression.trim().equals(""))
86 skip = ParameterExpander.evaluateIntegerExpression(aValueMap, skipExpression);
88 ParameterExpander.setValueForKey(
91 new CachingRewindableIterator(
92 new EntityIteratorAdapter( mainTablePrefix, extraTables,
93 ParameterExpander.expandExpression( aValueMap, whereClause ),
94 ParameterExpander.expandExpression( aValueMap, orderByClause ),
103 catch (Throwable t) {
104 aLogger.error("cannot retrieve list into key " + key + ": " + t.getMessage());
106 ParameterExpander.setValueForKey(
109 new CachingRewindableIterator(new Vector().iterator())
112 catch (Throwable s) {
116 super.produce(aValueMap, aVerb, aLogger);