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.
32 package mir.producer.reader;
34 import java.util.Arrays;
35 import java.util.HashSet;
36 import java.util.Iterator;
40 public class ReaderTool {
42 public static void checkValidIdentifier(String anIdentifier) throws ProducerConfigExc {
45 public static String getStringAttributeWithDefault(Map anAttributes, String aKey, String aDefault) {
46 if (anAttributes.containsKey(aKey))
47 return (String) anAttributes.get(aKey);
52 public static void checkIntegerAttribute(Map anAttributes, String aKey) throws ProducerConfigExc {
54 Integer.parseInt((String) anAttributes.get(aKey));
57 throw new ProducerConfigExc("attribute '"+aKey+"' is not an integer" );
61 public static int getIntegerAttributeWithDefault(Map anAttributes, String aKey, int aDefault) throws ProducerConfigExc {
64 if (anAttributes.containsKey(aKey)) {
65 checkIntegerAttribute(anAttributes, aKey);
66 return Integer.parseInt((String) anAttributes.get(aKey));
72 public static void checkAttributes(Map anAttributes, String[] aRequiredAttributes, String[] anOptionalAttributes) throws ProducerConfigExc {
73 checkAttributeSet(anAttributes.keySet(),
74 new HashSet(Arrays.asList(aRequiredAttributes)),
75 new HashSet(Arrays.asList(anOptionalAttributes)));
78 public static void checkAttributeSet(Set aSet, Set aRequiredElements, Set anOptionalElements) throws ProducerConfigExc{
83 Object item = i.next();
85 if (!(aRequiredElements.contains(item) || anOptionalElements.contains(item)))
86 throw new ProducerConfigExc("unknown attribute '" + item + "'" );
89 i = aRequiredElements.iterator();
91 Object item = i.next();
93 if (!(aSet.contains(item)))
94 throw new ProducerConfigExc("missing required attribute '" + item + "'" );