001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.commons.mail.resolver; 018 019import org.apache.commons.mail.DataSourceResolver; 020 021/** 022 * Base class for various resolvers. 023 * 024 * @since 1.3 025 */ 026public abstract class DataSourceBaseResolver implements DataSourceResolver 027{ 028 /** shall we ignore resources not found or complain with an exception */ 029 private final boolean lenient; 030 031 /** 032 * Constructor. 033 */ 034 public DataSourceBaseResolver() 035 { 036 this.lenient = false; 037 } 038 039 /** 040 * Constructor. 041 * 042 * @param lenient shall we ignore resources not found or throw an exception? 043 */ 044 public DataSourceBaseResolver(final boolean lenient) 045 { 046 this.lenient = lenient; 047 } 048 049 /** 050 * Shall we ignore resources not found or throw an exception? 051 * 052 * @return the lenient flag 053 */ 054 public boolean isLenient() 055 { 056 return lenient; 057 } 058 059 /** 060 * Is this a content id? 061 * 062 * @param resourceLocation the resource location 063 * @return true if it is a CID 064 */ 065 protected boolean isCid(final String resourceLocation) 066 { 067 return resourceLocation.startsWith("cid:"); 068 } 069 070 /** 071 * Is this a file URL? 072 * 073 * @param urlString the URL string 074 * @return true if it is a file URL 075 */ 076 protected boolean isFileUrl(final String urlString) 077 { 078 return urlString.startsWith("file:/"); 079 } 080 081 /** 082 * Is this a HTTP/HTTPS URL? 083 * 084 * @param urlString the URL string 085 * @return true if it is a HTTP/HTTPS URL 086 */ 087 protected boolean isHttpUrl(final String urlString) 088 { 089 return urlString.startsWith("http://") || urlString.startsWith("https://"); 090 } 091}