Example usage for org.apache.lucene.index IndexReader maxDoc

Introduction

In this page you can find the example usage for org.apache.lucene.index IndexReader maxDoc.

Prototype

public abstract int maxDoc();

Source Link

Document

Returns one greater than the largest possible document number.

Usage

From source file:com.isotrol.impe3.nr.core.LocaleFilter.java

License:Open Source License

@Override
public DocIdSet getDocIdSet(IndexReader reader) throws IOException {
    final int n = reader.maxDoc();
    // Search for all
    final OpenBitSet all = getTerm(n, Schema.LOCALE, Schema.ALL_LOCALES, reader);
    // Locale loop
    // locale = requested || (locale = ALL && other != requested)
    final String localeValue = locale.toString();
    final OpenBitSet result = getTerm(n, Schema.OTHER_LOCALE, localeValue, reader);
    result.flip(0, n);//from  w  w w  . j ava2s .  com
    result.intersect(all);
    result.union(getTerm(n, Schema.LOCALE, localeValue, reader));
    return result;
}

From source file:com.jaeksoft.searchlib.index.IndexStatistics.java

License:Open Source License

protected IndexStatistics(IndexReader indexReader) {
    maxDoc = indexReader.maxDoc();
    numDocs = indexReader.numDocs();/*from  w w  w . ja  v a 2  s  .co m*/
    numDeletedDocs = indexReader.numDeletedDocs();
    hasDeletions = indexReader.hasDeletions();
    isOptimized = indexReader.isOptimized();
}

From source file:com.jivesoftware.forum.database.FieldFilter.java

License:Open Source License

public BitSet bits(IndexReader reader) throws IOException {
    //Create a new BitSet with a capacity equal to the size of the index.
    BitSet bits = new BitSet(reader.maxDoc());
    //Match all search terms.
    for (int i = 0; i < searchTerms.length; i++) {
        //Get an enumeration of all the documents that match the specified
        //field value.
        TermDocs matchingDocs = reader.termDocs(searchTerms[i]);
        try {//from   w w  w . ja va  2  s.  co  m
            if (matchingDocs != null) {
                while (matchingDocs.next()) {
                    bits.set(matchingDocs.doc());
                }
            }
        } finally {
            if (matchingDocs != null) {
                matchingDocs.close();
            }
        }
    }
    return bits;
}

From source file:com.leavesfly.lia.advsearching.BooksLikeThis.java

License:Apache License

public static void main(String[] args) throws IOException {
    Directory dir = TestUtil.getBookIndexDirectory();

    IndexReader reader = IndexReader.open(dir);
    int numDocs = reader.maxDoc();

    BooksLikeThis blt = new BooksLikeThis(reader);
    for (int i = 0; i < numDocs; i++) { // #1
        System.out.println();//from   ww  w  .j a v  a2s.c o  m
        Document doc = reader.document(i);
        System.out.println(doc.get("title"));

        Document[] docs = blt.docsLike(i, 10); // #2
        if (docs.length == 0) {
            System.out.println("  None like this");
        }
        for (Document likeThisDoc : docs) {
            System.out.println("  -> " + likeThisDoc.get("title"));
        }
    }
    reader.close();
    dir.close();
}

From source file:com.leavesfly.lia.advsearching.CategorizerTest.java

License:Apache License

private void buildCategoryVectors() throws IOException {
    IndexReader reader = IndexReader.open(TestUtil.getBookIndexDirectory());

    int maxDoc = reader.maxDoc();

    for (int i = 0; i < maxDoc; i++) {
        if (!reader.isDeleted(i)) {
            Document doc = reader.document(i);
            String category = doc.get("category");

            Map vectorMap = (Map) categoryMap.get(category);
            if (vectorMap == null) {
                vectorMap = new TreeMap();
                categoryMap.put(category, vectorMap);
            }/*from w  w w.  jav  a2  s.  co m*/

            TermFreqVector termFreqVector = reader.getTermFreqVector(i, "subject");

            addTermFreqToMap(vectorMap, termFreqVector);
        }
    }
}

From source file:com.leavesfly.lia.extsearch.filters.SpecialsFilter.java

License:Apache License

public DocIdSet getDocIdSet(IndexReader reader) throws IOException {
    OpenBitSet bits = new OpenBitSet(reader.maxDoc());

    String[] isbns = accessor.isbns(); // #1

    int[] docs = new int[1];
    int[] freqs = new int[1];

    for (String isbn : isbns) {
        if (isbn != null) {
            TermDocs termDocs = reader.termDocs(new Term("isbn", isbn)); // #2
            int count = termDocs.read(docs, freqs);
            if (count == 1) { // #3
                bits.set(docs[0]); // #3
            } // #3
        }/*from w  ww  .j ava  2  s . c o  m*/
    }

    return bits;
}

From source file:com.leavesfly.lia.tool.BooksMoreLikeThis.java

License:Apache License

public static void main(String[] args) throws Throwable {

    String indexDir = System.getProperty("index.dir");
    FSDirectory directory = FSDirectory.open(new File(indexDir));
    IndexReader reader = IndexReader.open(directory);

    IndexSearcher searcher = new IndexSearcher(reader);

    int numDocs = reader.maxDoc();

    MoreLikeThis mlt = new MoreLikeThis(reader); // #A
    mlt.setFieldNames(new String[] { "title", "author" });
    mlt.setMinTermFreq(1); // #B
    mlt.setMinDocFreq(1);//w  ww .ja  va  2  s . c  om

    for (int docID = 0; docID < numDocs; docID++) { // #C
        System.out.println();
        Document doc = reader.document(docID);
        System.out.println(doc.get("title"));

        Query query = mlt.like(docID); // #D
        System.out.println("  query=" + query);

        TopDocs similarDocs = searcher.search(query, 10);
        if (similarDocs.totalHits == 0)
            System.out.println("  None like this");
        for (int i = 0; i < similarDocs.scoreDocs.length; i++) {
            if (similarDocs.scoreDocs[i].doc != docID) { // #E
                doc = reader.document(similarDocs.scoreDocs[i].doc);
                System.out.println("  -> " + doc.getField("title").stringValue());
            }
        }
    }

    searcher.close();
    reader.close();
    directory.close();
}

From source file:com.marc.lastweek.business.util.lucene.filters.StateFilter.java

License:Open Source License

@Override
public BitSet bits(IndexReader indexreader) throws IOException {
    BitSet bitSet = new BitSet(indexreader.maxDoc());
    TermDocs termDocs = indexreader.termDocs(new Term("state", "0"));
    while (termDocs.next()) {
        bitSet.set(termDocs.doc());// www.  j  a  v  a2s . com
    }
    return bitSet;
}

From source file:com.mathworks.xzheng.advsearching.CategorizerTest.java

License:Apache License

private void buildCategoryVectors() throws IOException {
    IndexReader reader = IndexReader.open(TestUtil.getBookIndexDirectory());

    int maxDoc = reader.maxDoc();

    for (int i = 0; i < maxDoc; i++) {
        if (!reader.document(i)) {
            Document doc = reader.document(i);
            String category = doc.get("category");

            Map vectorMap = (Map) categoryMap.get(category);
            if (vectorMap == null) {
                vectorMap = new TreeMap();
                categoryMap.put(category, vectorMap);
            }//from   w ww.  ja  v  a2  s .com

            Terms terms = reader.getTermVector(i, "subject");

            addTermFreqToMap(vectorMap, terms);
        }
    }
}

From source file:com.mathworks.xzheng.tools.BooksMoreLikeThis.java

License:Apache License

public static void main(String[] args) throws Throwable {

    String indexDir = System.getProperty("index.dir");
    FSDirectory directory = FSDirectory.open(new File(indexDir));
    IndexReader reader = IndexReader.open(directory);

    IndexSearcher searcher = new IndexSearcher(reader);

    int numDocs = reader.maxDoc();

    MoreLikeThis mlt = new MoreLikeThis(reader); // #A
    mlt.setFieldNames(new String[] { "title", "author" });
    mlt.setMinTermFreq(1); // #B
    mlt.setMinDocFreq(1);/*from  w  w w .ja  v  a2  s  .  c  o  m*/

    for (int docID = 0; docID < numDocs; docID++) { // #C
        System.out.println();
        Document doc = reader.document(docID);
        System.out.println(doc.get("title"));

        Query query = mlt.like(docID); // #D
        System.out.println("  query=" + query);

        TopDocs similarDocs = searcher.search(query, 10);
        if (similarDocs.totalHits == 0)
            System.out.println("  None like this");
        for (int i = 0; i < similarDocs.scoreDocs.length; i++) {
            if (similarDocs.scoreDocs[i].doc != docID) { // #E
                doc = reader.document(similarDocs.scoreDocs[i].doc);
                System.out.println("  -> " + doc.getField("title").stringValue());
            }
        }
    }

    reader.close();
    directory.close();
}