org.apache.james.transport.matchers
Class AbstractQuotaMatcher

java.lang.Object
  org.apache.mailet.base.GenericMatcher
      org.apache.james.transport.matchers.AbstractQuotaMatcher

All Implemented Interfaces:

Matcher, MatcherConfig

public abstract class AbstractQuotaMatcher
extends GenericMatcher

Abstract matcher checking whether a recipient has exceeded a maximum allowed quota.

"Quota" at this level is an abstraction whose specific interpretation will be done by subclasses.

Although extending GenericMatcher, its logic is recipient oriented.

Since:

2.2.0

Version:

CVS $Revision: 713949 $ $Date: 2008-11-14 07:40:21 +0000 (Fri, 14 Nov 2008) $

Constructor Summary

AbstractQuotaMatcher()

Method Summary

protected abstract long	getQuota(MailAddress address, Mail mail) Gets the quota to check against.
protected abstract long	getUsed(MailAddress address, Mail mail) Gets the used amount to check against the quota.
protected boolean	isOverQuota(MailAddress address, Mail mail) Does the quota check.
protected boolean	isRecipientChecked(MailAddress recipient) Checks the recipient.
protected boolean	isSenderChecked(MailAddress sender) Checks the sender.
java.util.Collection	match(Mail mail) Standard matcher entrypoint.
protected long	parseQuota(java.lang.String amount) Utility method that parses an amount string.

Methods inherited from class org.apache.mailet.base.GenericMatcher

destroy, getCondition, getMailetContext, getMatcherConfig, getMatcherInfo, getMatcherName, init, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractQuotaMatcher

public AbstractQuotaMatcher()

Method Detail

match

public final java.util.Collection match(Mail mail)
                                 throws javax.mail.MessagingException

Standard matcher entrypoint. First of all, checks the sender using isSenderChecked(org.apache.mailet.MailAddress). Then, for each recipient checks it using isRecipientChecked(org.apache.mailet.MailAddress) and isOverQuota(org.apache.mailet.MailAddress, org.apache.mailet.Mail).

Specified by:

match in interface Matcher

Specified by:

match in class GenericMatcher

Throws:

javax.mail.MessagingException - if either isSenderChecked or isRecipientChecked throw an exception

isOverQuota

protected boolean isOverQuota(MailAddress address,
                              Mail mail)

Does the quota check. Checks if getQuota(org.apache.mailet.MailAddress, org.apache.mailet.Mail) < getUsed(org.apache.mailet.MailAddress, org.apache.mailet.Mail) for a recipient. Catches any throwable returning false, and so should any override do.

Parameters:

address - the recipient addresss to check

mail - the mail involved in the check

Returns:

true if over quota

isSenderChecked

protected boolean isSenderChecked(MailAddress sender)
                           throws javax.mail.MessagingException

Checks the sender. The default behaviour is to check that the sender is not null nor the local postmaster. If a subclass overrides this method it should "and" super.isSenderChecked to its check.

Parameters:

sender - the sender to check

Throws:

javax.mail.MessagingException

isRecipientChecked

protected boolean isRecipientChecked(MailAddress recipient)
                              throws javax.mail.MessagingException

Checks the recipient. The default behaviour is to check that the recipient is not the local postmaster. If a subclass overrides this method it should "and" super.isRecipientChecked to its check.

Parameters:

recipient - the recipient to check

Throws:

javax.mail.MessagingException

getQuota

protected abstract long getQuota(MailAddress address,
                                 Mail mail)
                          throws javax.mail.MessagingException

Gets the quota to check against.

Parameters:

address - the address holding the quota if applicable

mail - the mail involved if needed

Throws:

javax.mail.MessagingException

getUsed

protected abstract long getUsed(MailAddress address,
                                Mail mail)
                         throws javax.mail.MessagingException

Gets the used amount to check against the quota.

Parameters:

address - the address involved

mail - the mail involved if needed

Throws:

javax.mail.MessagingException

parseQuota

protected long parseQuota(java.lang.String amount)
                   throws javax.mail.MessagingException

Utility method that parses an amount string. You can use 'k' and 'm' as optional postfixes to the amount (both upper and lowercase). In other words, "1m" is the same as writing "1024k", which is the same as "1048576".

Parameters:

amount - the amount string to parse

Throws:

javax.mail.MessagingException