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 mir.entity.adapter.EntityAdapterModel;
33 import mir.entity.adapter.EntityIteratorAdapter;
34 import mir.util.CachingRewindableIterator;
35 import mir.util.ParameterExpander;
36 import mir.util.StringRoutines;
38 import java.util.Collections;
40 public class EntityListProducerNode extends ProducerNodeDecorator {
41 private String keyExpression;
42 private String whereClause;
43 private String orderByClause;
44 private String mainTablePrefix;
45 private String extraTables;
46 private EntityAdapterModel model;
47 private String definition;
48 private String limitExpression;
49 private String skipExpression;
51 public EntityListProducerNode(String aKey,
52 EntityAdapterModel aModel, String aMainTablePrefix, String anExtraTables,
53 String aDefinition, String aWhereClause, String anOrderByClause,
54 String aLimitExpression, String aSkipExpression, ProducerNode aSubNode) {
58 mainTablePrefix = aMainTablePrefix;
59 extraTables = anExtraTables;
60 definition = aDefinition;
62 whereClause = aWhereClause;
63 orderByClause = anOrderByClause;
64 limitExpression = aLimitExpression;
65 skipExpression = aSkipExpression;
68 public void produce(ProductionContext aProductionContext) throws ProducerFailure, ProducerExc {
70 int limit = ParameterExpander.evaluateIntegerExpressionWithDefault(aProductionContext.getValueSet(), limitExpression, -1);
71 int skip = ParameterExpander.evaluateIntegerExpressionWithDefault(aProductionContext.getValueSet(), skipExpression, 0);
73 if (skipExpression != null && !skipExpression.trim().equals(""))
74 skip = ParameterExpander.evaluateIntegerExpression(aProductionContext.getValueSet(), skipExpression);
75 String key = ParameterExpander.expandExpression(aProductionContext.getValueSet(), keyExpression);
78 ParameterExpander.setValueForKey(
79 aProductionContext.getValueSet(),
81 new CachingRewindableIterator(
82 new EntityIteratorAdapter( mainTablePrefix,
83 StringRoutines.splitString(ParameterExpander.expandExpression(aProductionContext.getValueSet(), extraTables).trim(), ","),
84 ParameterExpander.expandExpression(aProductionContext.getValueSet(), whereClause ),
85 ParameterExpander.expandExpression(aProductionContext.getValueSet(), orderByClause ),
95 aProductionContext.getLogger().warn("cannot retrieve list into keyExpression " + key, t);
98 ParameterExpander.setValueForKey(
99 aProductionContext.getValueSet(),
101 new CachingRewindableIterator(Collections.EMPTY_LIST.iterator())
104 catch (Throwable s) {
108 catch (Throwable t) {
109 aProductionContext.getLogger().error("cannot process entity list producer node: : ", t);
112 super.produce(aProductionContext);