vincenzo 2003/06/23 11:43:33
Added: src/java/org/apache/james/transport/matchers
CompareNumericHeaderValue.java
Log:
Revision Changes Path
1.1
jakarta-james/src/java/org/apache/james/transport/matchers/CompareNumericHeaderValue.java
Index: CompareNumericHeaderValue.java
===================================================================
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache", "Jakarta", "JAMES" and "Apache Software Foundation"
* must not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* Portions of this software are based upon public domain software
* originally written at the National Center for Supercomputing Applications,
* University of Illinois, Urbana-Champaign.
*/
package org.apache.james.transport.matchers;
import org.apache.mailet.GenericMatcher;
import org.apache.mailet.Mail;
import org.apache.mailet.MailAddress;
import java.lang.NumberFormatException;
import java.util.Collection;
import java.util.StringTokenizer;
import javax.mail.*;
import javax.mail.internet.*;
/**
* <P>Matches mails containing a header with a numeric value whose comparison with
the specified value is true.
* If the header is missing in the message, there will be <I>no match</I></P>
* <P>Configuration string: The headerName, a comparison operator and the numeric
headerValue
* to compare with, <I>space or tab delimited</I>.</P>
* <P>The comparison operators are: <CODE><, <=, ==, >=, ></CODE>;
* another set of operators is: <CODE>LT, LE, EQ, GE, GT</CODE>.
* Also the following operators are accepted: <CODE>=<, =, =></CODE>.</P>
* <P>Example:</P>
* <PRE><CODE>
* <mailet match="CompareNumericHeaderValue=X-MessageIsSpamProbability > 0.9"
class="ToProcessor">
* <processor> spam </processor>
* </mailet>
* </CODE></PRE>
*
* @version CVS $Revision: 1.1 $ $Date: 2003/06/23 18:43:32 $
* @since 2.2.0
*/
public class CompareNumericHeaderValue extends GenericMatcher {
private String headerName = null;
private int comparisonOperator;
private final static int LT = -2;
private final static int LE = -1;
private final static int EQ = 0;
private final static int GE = +1;
private final static int GT = +2;
private double headerValue;
public void init() throws MessagingException {
StringTokenizer st = new StringTokenizer(getCondition(), " \t", false);
if (st.hasMoreTokens()) {
headerName = st.nextToken().trim();
}
else {
throw new MessagingException("Missing headerName");
}
if (st.hasMoreTokens()) {
String comparisonOperatorString = st.nextToken().trim();
if (comparisonOperatorString.equals("<")
|| comparisonOperatorString.equals("LT")) {
comparisonOperator = LT;
}
else if (comparisonOperatorString.equals("<=")
|| comparisonOperatorString.equals("=<")
|| comparisonOperatorString.equals("LE")) {
comparisonOperator = LE;
}
else if (comparisonOperatorString.equals("==")
|| comparisonOperatorString.equals("=")
|| comparisonOperatorString.equals("EQ")) {
comparisonOperator = EQ;
}
else if (comparisonOperatorString.equals(">=")
|| comparisonOperatorString.equals("=>")
|| comparisonOperatorString.equals("GE")) {
comparisonOperator = GE;
}
else if (comparisonOperatorString.equals(">")
|| comparisonOperatorString.equals("GT")) {
comparisonOperator = GT;
}
else {
throw new MessagingException("Bad comparisonOperator: \"" +
comparisonOperatorString + "\"");
}
}
else {
throw new MessagingException("Missing comparisonOperator");
}
if (st.hasMoreTokens()) {
String headerValueString = st.nextToken().trim();
try {
headerValue = Double.parseDouble(headerValueString);
}
catch (NumberFormatException nfe) {
throw new MessagingException("Bad header comparison value: \""
+ headerValueString + "\"", nfe);
}
}
else {
throw new MessagingException("Missing headerValue threshold");
}
}
public Collection match(Mail mail) throws MessagingException {
if (headerName == null) {
// should never get here
throw new IllegalStateException("Null headerName");
}
MimeMessage message = (MimeMessage) mail.getMessage();
String [] headerArray = message.getHeader(headerName);
if (headerArray != null && headerArray.length > 0) {
try {
double messageHeaderValue =
Double.parseDouble(headerArray[0].trim());
int comparison = Double.compare(messageHeaderValue, headerValue);
switch (comparisonOperator) {
case LT:
if (comparison < 0) {
return mail.getRecipients();
}
break;
case LE:
if (comparison <= 0) {
return mail.getRecipients();
}
break;
case EQ:
if (comparison == 0) {
return mail.getRecipients();
}
break;
case GE:
if (comparison >= 0) {
return mail.getRecipients();
}
break;
case GT:
if (comparison > 0) {
return mail.getRecipients();
}
break;
default:
// should never get here
throw new IllegalStateException("Unknown comparisonOperator"
+ comparisonOperator);
}
}
catch (NumberFormatException nfe) {
throw new MessagingException("Bad header value found in message: \""
+ headerArray[0] + "\"", nfe);
}
}
return null;
}
}
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