User: juha
Date: 00/06/15 13:30:28
Added: src/main/org/jboss/verifier Section.java
Log:
initial import
Revision Changes Path
1.1 jboss/src/main/org/jboss/verifier/Section.java
Index: Section.java
===================================================================
package org.jboss.verifier;
/*
* Class org.jboss.verifier.Section
* Copyright (C) 2000 Juha Lindfors
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* This package and its source code is available at www.jboss.org
* $Id: Section.java,v 1.1 2000/06/15 20:30:28 juha Exp $
*/
// standard imports
import java.util.StringTokenizer;
import java.util.Enumeration;
import java.text.ParseException;
// non-standard class dependencies
/**
* Represents a section in the EJB spec.
*
* For more detailed documentation, refer to the
* <a href="" << INSERT DOC LINK HERE >> </a>
*
* @see << OTHER RELATED CLASSES >>
*
* @author Juha Lindfors
* @version $Revision: 1.1 $
* @since JDK 1.3
*/
public class Section {
private char[] section;
/*
* Constructor
*/
public Section(String id) {
try {
section = parseSection(id);
}
catch (ParseException e) {
throw new IllegalArgumentException(CONSTRUCTION_ERROR);
}
}
/*
****************************************************************************
*
* PUBLIC INSTANCE METHODS
*
****************************************************************************
*/
/*
* Uses the hashcode of the id string
*/
public int hashCode() {
return getSection().hashCode();
}
/*
* Returns the section number by index
*/
public char getSectionToken(int index) {
if (section.length >= index)
throw new IndexOutOfBoundsException(GET_SECTION_INDEX_ERROR);
return section[index];
}
/*
* Returns the section string
*/
public String getSection() {
/*
* [TODO] this can be done more efficiently by creating/storing the string
* at construction time. We can do this cause at the moment we're
* still immutable.
*/
StringBuffer buffer = new StringBuffer();
for (int i = 0; i < section.length; ++i) {
buffer.append(section[i]);
if (i + 1 < section.length)
buffer.append(".");
}
return buffer.toString();
}
/*
****************************************************************************
*
* PRIVATE INSTANCE METHODS
*
****************************************************************************
*/
/*
* parses the id string into char array
*/
private char[] parseSection(String id) throws ParseException {
StringTokenizer tokenizer = new StringTokenizer(id, DELIMETER);
int count = tokenizer.countTokens();
char[] token = new char[count];
for (int i = 0; tokenizer.hasMoreTokens(); ++i) {
String str = tokenizer.nextToken();
if (str.length() > 1)
throw new ParseException(PARSE_SECTION_ERROR, i);
token[i] = str.toCharArray()[0];
}
return token;
}
/*
****************************************************************************
*
* PRIVATE CONSTANTS
*
****************************************************************************
*/
/*
* Used by the parseSection() to tokenize the section id string
*/
private final static String DELIMETER = ".";
/*
* Error messages
*/
private final static String PARSE_SECTION_ERROR =
"Section token cannot be longer than one character";
private final static String GET_SECTION_INDEX_ERROR =
"Section index too large";
private final static String CONSTRUCTION_ERROR =
"Cannot parse section string";
}
