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/****************************************************************
* 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.james.mime4j.field.address;
import java.util.ArrayList;
/**
* An immutable, random-access list of Strings (that
* are supposedly domain names or domain literals).
*
*
*/
public class DomainList {
private ArrayList<String> domains;
/**
* @param domains An ArrayList that contains only String objects.
* @param dontCopy true iff it is not possible for the domains ArrayList to be modified by someone else.
*/
public DomainList(ArrayList<String> domains, boolean dontCopy) {
if (domains != null)
this.domains = (dontCopy ? domains : new ArrayList<String>(domains));
else
this.domains = new ArrayList<String>(0);
}
/**
* The number of elements in this list.
*/
public int size() {
return domains.size();
}
/**
* Gets the domain name or domain literal at the
* specified index.
* @throws IndexOutOfBoundsException If index is < 0 or >= size().
*/
public String get(int index) {
if (0 > index || size() <= index)
throw new IndexOutOfBoundsException();
return domains.get(index);
}
/**
* Returns the list of domains formatted as a route
* string (not including the trailing ':').
*/
public String toRouteString() {
StringBuffer out = new StringBuffer();
for (int i = 0; i < domains.size(); i++) {
out.append("@");
out.append(get(i));
if (i + 1 < domains.size())
out.append(",");
}
return out.toString();
}
}
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