gvsig-tools / org.gvsig.tools / library / trunk / org.gvsig.tools / org.gvsig.tools.lib / src / main / java / org / gvsig / tools / resourcesstorage / URLResource.java @ 1993
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1 | 1993 | jjdelcerro | package org.gvsig.tools.resourcesstorage; |
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2 | |||
3 | import java.io.IOException; |
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4 | import java.io.InputStream; |
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5 | import java.io.OutputStream; |
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6 | import java.net.URL; |
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7 | import org.apache.commons.io.IOUtils; |
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8 | |||
9 | /**
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10 | *
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11 | * @author jjdelcerro
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12 | */
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13 | @SuppressWarnings("UseSpecificCatch") |
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14 | public class URLResource implements ResourcesStorage.Resource { |
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15 | |||
16 | private final URL url; |
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17 | private InputStream is; |
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18 | |||
19 | public URLResource(URL url) { |
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20 | this.url = url;
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21 | this.is = null; |
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22 | } |
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23 | |||
24 | @Override
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25 | public boolean isReadOnly() { |
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26 | return true; |
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27 | } |
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28 | |||
29 | @Override
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30 | public URL getURL() { |
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31 | return this.url; |
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32 | } |
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33 | |||
34 | @Override
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35 | public boolean exists() { |
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36 | if( this.is!=null ) { |
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37 | return true; |
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38 | } |
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39 | try {
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40 | this.is = this.url.openStream(); |
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41 | return true; |
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42 | } catch (Exception ex) { |
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43 | return false; |
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44 | } |
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45 | } |
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46 | |||
47 | @Override
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48 | public InputStream asInputStream() throws IOException { |
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49 | if( this.is!=null ) { |
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50 | throw new RuntimeException("Stream already open"); |
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51 | } |
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52 | this.is = this.url.openStream(); |
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53 | return this.is; |
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54 | } |
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55 | |||
56 | @Override
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57 | public OutputStream asOutputStream() throws IOException { |
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58 | return null; |
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59 | } |
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60 | |||
61 | @Override
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62 | public void close() { |
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63 | IOUtils.closeQuietly(this.is);
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64 | this.is = null; |
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65 | } |
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66 | |||
67 | } |