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.Collections;
35 import mir.entity.adapter.EntityAdapterModel;
36 import mir.entity.adapter.EntityIteratorAdapter;
37 import mir.log.LoggerWrapper;
38 import mir.util.CachingRewindableIterator;
39 import mir.util.ParameterExpander;
40 import mir.util.StringRoutines;
42 public class EntityListProducerNode extends ProducerNodeDecorator {
43 private String keyExpression;
44 private String whereClause;
45 private String orderByClause;
46 private String mainTablePrefix;
47 private String extraTables;
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 aMainTablePrefix, String anExtraTables,
55 String aDefinition, String aWhereClause, String anOrderByClause,
56 String aLimitExpression, String aSkipExpression, ProducerNode aSubNode) {
60 mainTablePrefix = aMainTablePrefix;
61 extraTables = anExtraTables;
62 definition = aDefinition;
64 whereClause = aWhereClause;
65 orderByClause = anOrderByClause;
66 limitExpression = aLimitExpression;
67 skipExpression = aSkipExpression;
70 public void produce(Map aValueMap, String aVerb, LoggerWrapper aLogger) throws ProducerFailure, ProducerExc {
72 int limit = ParameterExpander.evaluateIntegerExpressionWithDefault(aValueMap, limitExpression, -1);
73 int skip = ParameterExpander.evaluateIntegerExpressionWithDefault(aValueMap, skipExpression, 0);
75 if (skipExpression != null && !skipExpression.trim().equals(""))
76 skip = ParameterExpander.evaluateIntegerExpression(aValueMap, skipExpression);
77 String key = ParameterExpander.expandExpression(aValueMap, keyExpression);
80 ParameterExpander.setValueForKey(
83 new CachingRewindableIterator(
84 new EntityIteratorAdapter( mainTablePrefix,
85 StringRoutines.splitString(ParameterExpander.expandExpression( aValueMap, extraTables).trim(), ","),
86 ParameterExpander.expandExpression( aValueMap, whereClause ),
87 ParameterExpander.expandExpression( aValueMap, orderByClause ),
97 aLogger.error("cannot retrieve list into keyExpression " + key + ": " + t.getMessage());
99 ParameterExpander.setValueForKey(
102 new CachingRewindableIterator(Collections.EMPTY_LIST.iterator())
105 catch (Throwable s) {
109 catch (Throwable t) {
110 aLogger.error("cannot process entity list producer node: : " + t.getMessage());
113 super.produce(aValueMap, aVerb, aLogger);