2 * Copyright (C) 2001-2006 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 * and distribute linked combinations including the two. You must obey the
23 * GNU General Public License in all respects for all of the code used other than
24 * the above mentioned libraries. If you modify this file, you may extend this
25 * exception to your version of the file, but you are not obligated to do so.
26 * If you do not wish to do so, delete this exception statement from your version.
30 import mir.entity.adapter.EntityAdapterModel;
31 import mir.entity.adapter.EntityIteratorAdapter;
32 import mir.util.CachingRewindableIterator;
33 import mir.util.ParameterExpander;
34 import mir.util.StringRoutines;
36 import java.util.Collections;
38 public class EntityListProducerNode extends ProducerNodeDecorator {
39 private String keyExpression;
40 private String whereClause;
41 private String orderByClause;
42 private String mainTablePrefix;
43 private String extraTables;
44 private EntityAdapterModel model;
45 private String definition;
46 private String limitExpression;
47 private String skipExpression;
49 public EntityListProducerNode(String aKey,
50 EntityAdapterModel aModel, String aMainTablePrefix, String anExtraTables,
51 String aDefinition, String aWhereClause, String anOrderByClause,
52 String aLimitExpression, String aSkipExpression, ProducerNode aSubNode) {
56 mainTablePrefix = aMainTablePrefix;
57 extraTables = anExtraTables;
58 definition = aDefinition;
60 whereClause = aWhereClause;
61 orderByClause = anOrderByClause;
62 limitExpression = aLimitExpression;
63 skipExpression = aSkipExpression;
66 public void produce(ProductionContext aProductionContext) throws ProducerFailure, ProducerExc {
68 int limit = ParameterExpander.evaluateIntegerExpressionWithDefault(aProductionContext.getValueSet(), limitExpression, -1);
69 int skip = ParameterExpander.evaluateIntegerExpressionWithDefault(aProductionContext.getValueSet(), skipExpression, 0);
71 if (skipExpression != null && !skipExpression.trim().equals(""))
72 skip = ParameterExpander.evaluateIntegerExpression(aProductionContext.getValueSet(), skipExpression);
73 String key = ParameterExpander.expandExpression(aProductionContext.getValueSet(), keyExpression);
76 ParameterExpander.setValueForKey(
77 aProductionContext.getValueSet(),
79 new CachingRewindableIterator(
80 new EntityIteratorAdapter( mainTablePrefix,
81 StringRoutines.splitString(ParameterExpander.expandExpression(aProductionContext.getValueSet(), extraTables).trim(), ","),
82 ParameterExpander.expandExpression(aProductionContext.getValueSet(), whereClause ),
83 ParameterExpander.expandExpression(aProductionContext.getValueSet(), orderByClause ),
93 aProductionContext.getLogger().warn("cannot retrieve list into keyExpression " + key, t);
96 ParameterExpander.setValueForKey(
97 aProductionContext.getValueSet(),
99 new CachingRewindableIterator(Collections.EMPTY_LIST.iterator())
102 catch (Throwable s) {
106 catch (Throwable t) {
107 aProductionContext.getLogger().error("cannot process entity list producer node: : ", t);
110 super.produce(aProductionContext);