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| package photospace.search; |
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| |
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| import java.io.*; |
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| import org.apache.commons.io.*; |
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| import org.apache.lucene.index.*; |
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| |
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| public class SearchIndex |
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| { |
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| File index; |
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| IndexReader reader; |
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| |
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| public SearchIndex(File index)
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| throws IOException |
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| { |
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14
| this.index = index.getCanonicalFile();
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| } |
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| |
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63
| public IndexReader getReader() throws IOException
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| { |
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63
| synchronized(this)
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| { |
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1
| if (!index.exists()) throw new IllegalStateException("Search index has not been created yet");
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| |
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62
| if (reader == null)
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| { |
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| try
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| { |
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| reader = IndexReader.open(index);
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| } |
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| catch (IOException e) |
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| { |
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0
| IndexWriter writer = new IndexWriter(index, new MetaAnalyzer(), true);
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0
| writer.close();
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0
| reader = IndexReader.open(index);
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| } |
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| } |
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| return reader;
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| } |
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| } |
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| |
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| public void closeReader() throws IOException
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| { |
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| synchronized(this)
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| { |
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| if (reader != null)
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| { |
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| reader.close();
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| reader = null;
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| } |
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| } |
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| } |
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| |
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| public void update(File updated) throws IOException
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| { |
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| synchronized(this)
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| { |
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| closeReader();
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| FileUtils.deleteDirectory(index);
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0
| if (!updated.renameTo(index)) throw new IOException("Unable to move temporary index " + updated + " to " + index);
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| } |
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| } |
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| |
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1
| public File getIndex()
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| { |
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1
| return index;
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| } |
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| } |
