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package org.paneris.bibliomania.fti; |
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|
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import org.melati.poem.transaction.ToTidyList; |
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|
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import com.sleepycat.db.DatabaseException; |
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import com.sleepycat.db.LockMode; |
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import com.sleepycat.db.MemoryException; |
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import com.sleepycat.db.Cursor; |
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import com.sleepycat.db.DatabaseEntry; |
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import com.sleepycat.db.OperationStatus; |
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|
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class TextStream extends TextSearchResultsBase |
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implements SearchResults, ToTidyList.Closeable { |
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public final String word; |
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public final int wordID; |
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public final int frequency; |
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public long textID; |
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private final Cursor texts; |
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private final DatabaseEntry word_text; |
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private final DatabaseEntry occurrencesData; |
| 21 | 0 | private final WordTextSearchResults occurrences = |
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new WordTextSearchResults(); |
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|
| 24 | 0 | TextStream(IndexOther index, String word) throws FTIException, DatabaseException { |
| 25 | 0 | this.word = word; |
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|
| 27 | 0 | synchronized (index.idOfWord) { |
| 28 | 0 | wordID = index.idOfWord(word); |
| 29 | 0 | frequency = IndexOther.getWC_count(index.idOfWordData.getData()); |
| 30 | 0 | } |
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|
| 32 | 0 | texts = index.occurrencesOfWordInText.openCursor(null, null); |
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|
| 34 | 0 | word_text = DbUtils.userMemDatabaseEntry(IndexOther.wtBytesLength); |
| 35 | 0 | occurrencesData = DbUtils.userMemDatabaseEntry(500); |
| 36 | 0 | } |
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|
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public int frequency() { |
| 39 | 0 | return frequency; |
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} |
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|
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public void gotoText(long textIdP) throws DatabaseException { |
| 43 | 0 | if (IndexOther.debug) System.err.println(word + ": gotoText(" + textIdP + ")"); |
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|
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OperationStatus result; |
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for (;;) { |
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try { |
| 48 | 0 | IndexOther.setWT(word_text.getData(), wordID, textIdP); |
| 49 | 0 | result = texts.getSearchKeyRange(word_text, occurrencesData, LockMode.DEFAULT); |
| 50 | 0 | break; |
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} |
| 52 | 0 | catch (MemoryException e) { |
| 53 | 0 | occurrencesData.setData( |
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new byte[occurrencesData.getData().length * 2]); |
| 55 | 0 | occurrencesData.setUserBuffer(occurrencesData.getData().length, true); |
| 56 | 0 | } |
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} |
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|
| 59 | 0 | if (result != OperationStatus.SUCCESS) { |
| 60 | 0 | if (IndexOther.debug) System.err.println("nope: " + result); |
| 61 | 0 | this.textID = -1; |
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} |
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else { |
| 64 | 0 | if (IndexOther.getWT_wordID(word_text.getData()) != wordID) { |
| 65 | 0 | this.textID = -1; |
| 66 | 0 | if (IndexOther.debug) System.err.println("wrong word"); |
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} |
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else { |
| 69 | 0 | this.textID = IndexOther.getWT_textID(word_text.getData()); |
| 70 | 0 | if (IndexOther.debug) System.err.println("yep: " + this.textID); |
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} |
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} |
| 73 | 0 | } |
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|
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public long currentTextID() { |
| 76 | 0 | return textID; |
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} |
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|
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public int hitWordsCount() { |
| 80 | 0 | return occurrences.hitWordsCount(); |
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} |
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|
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public void init() { |
| 84 | 0 | occurrences.init(occurrencesData.getData(), |
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occurrencesData.getSize()); |
| 86 | 0 | } |
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|
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public void skipToNextHit() { |
| 89 | 0 | if (textID != -1) |
| 90 | 0 | occurrences.skipToNextHit(); |
| 91 | 0 | } |
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|
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public int currentWordIndex() { |
| 94 | 0 | return textID == -1 ? -1 : occurrences.currentWordIndex(); |
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} |
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|
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public int currentOffset() { |
| 98 | 0 | return textID == -1 ? -1 : occurrences.currentOffset(); |
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} |
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|
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public void close() { |
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try { |
| 103 | 0 | texts.close(); |
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} |
| 105 | 0 | catch (Exception e) {} |
| 106 | 0 | } |
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} |