1 | /**************************************************************** |
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2 | * Licensed to the Apache Software Foundation (ASF) under one * |
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3 | * or more contributor license agreements. See the NOTICE file * |
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4 | * distributed with this work for additional information * |
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5 | * regarding copyright ownership. The ASF licenses this file * |
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6 | * to you under the Apache License, Version 2.0 (the * |
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7 | * "License"); you may not use this file except in compliance * |
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8 | * with the License. You may obtain a copy of the License at * |
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9 | * * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 * |
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11 | * * |
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12 | * Unless required by applicable law or agreed to in writing, * |
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13 | * software distributed under the License is distributed on an * |
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14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * |
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15 | * KIND, either express or implied. See the License for the * |
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16 | * specific language governing permissions and limitations * |
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17 | * under the License. * |
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18 | ****************************************************************/ |
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19 | |
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20 | package org.apache.james.mime4j.storage; |
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21 | |
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22 | import java.io.IOException; |
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23 | import java.io.InputStream; |
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24 | |
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25 | import org.apache.james.mime4j.codec.CodecUtil; |
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26 | |
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27 | /** |
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28 | * Abstract implementation of {@link StorageProvider} that implements |
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29 | * {@link StorageProvider#store(InputStream) store(InputStream)} by copying the |
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30 | * input stream to a {@link StorageOutputStream} obtained from |
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31 | * {@link StorageProvider#createStorageOutputStream() createStorageOutputStream()}. |
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32 | */ |
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33 | public abstract class AbstractStorageProvider implements StorageProvider { |
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34 | |
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35 | /** |
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36 | * Sole constructor. |
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37 | */ |
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38 | protected AbstractStorageProvider() { |
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39 | } |
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40 | |
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41 | /** |
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42 | * This implementation creates a {@link StorageOutputStream} by calling |
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43 | * {@link StorageProvider#createStorageOutputStream() createStorageOutputStream()} |
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44 | * and copies the content of the given input stream to that output stream. |
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45 | * It then calls {@link StorageOutputStream#toStorage()} on the output |
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46 | * stream and returns this object. |
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47 | * |
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48 | * @param in |
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49 | * stream containing the data to store. |
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50 | * @return a {@link Storage} instance that can be used to retrieve the |
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51 | * stored content. |
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52 | * @throws IOException |
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53 | * if an I/O error occurs. |
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54 | */ |
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55 | public final Storage store(InputStream in) throws IOException { |
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56 | StorageOutputStream out = createStorageOutputStream(); |
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57 | CodecUtil.copy(in, out); |
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58 | return out.toStorage(); |
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59 | } |
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60 | |
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61 | } |
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