/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.directory.studio.openldap.syncrepl;
import java.text.ParseException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* This class implements a retry pair.
* <p>
* Format: "<retry interval> <# of retries>"
*/
public class RetryPair
{
/** The '+' retries value */
public static final int PLUS = -1;
/** The pattern used for parsing */
private static final Pattern pattern = Pattern.compile( "^([0-9]+) ([0-9]+|\\+)$" );
/** The interval */
private int interval;
/** The retries */
private int retries;
/**
* Gets a copy of a RetryPair object.
*
* @param syncRepl the initial RetryPair object
* @return a copy of the given RetryPair object
*/
public static RetryPair copy( RetryPair retryPair )
{
if ( retryPair != null )
{
RetryPair retryPairCopy = new RetryPair();
retryPairCopy.setInterval( retryPair.getInterval() );
retryPairCopy.setRetries( retryPair.getRetries() );
return retryPairCopy;
}
return null;
}
/**
* Gets a copy of the RetryPair object.
*
* @return a copy of the RetryPair object
*/
public RetryPair copy()
{
return RetryPair.copy( this );
}
/**
* Parses a retry pair string.
*
* @param s the string
* @return a retry pair
* @throws ParseException if an error occurs during parsing
*/
public static RetryPair parse( String s ) throws ParseException
{
// Creating the retry pair
RetryPair retryPair = new RetryPair();
// Matching the string
Matcher matcher = pattern.matcher( s );
// Checking the result
if ( matcher.find() )
{
// Interval
String interval = matcher.group( 1 );
try
{
retryPair.setInterval( Integer.parseInt( interval ) );
}
catch ( NumberFormatException e )
{
throw new ParseException( "Unable to convert interval value '" + interval + "' as an integer.", 0 );
}
// Retries
String retries = matcher.group( 2 );
if ( "+".equalsIgnoreCase( retries ) )
{
retryPair.setRetries( PLUS );
}
else
{
try
{
retryPair.setRetries( Integer.parseInt( retries ) );
}
catch ( NumberFormatException e )
{
throw new ParseException( "Unable to convert retries value '" + retries + "' as an integer.", 0 );
}
}
}
else
{
throw new ParseException( "Unable to parse string '" + s + "' as a valid retry pair.", 0 );
}
return retryPair;
}
public int getInterval()
{
return interval;
}
public int getRetries()
{
return retries;
}
public void setInterval( int interval )
{
this.interval = interval;
}
public void setRetries( int retries )
{
this.retries = retries;
}
/**
* {@inheritDoc}
*/
public String toString()
{
StringBuilder sb = new StringBuilder();
sb.append( interval );
sb.append( " " );
if ( retries == PLUS )
{
sb.append( "+" );
}
else
{
sb.append( retries );
}
return sb.toString();
}
}