Esempio n. 1
0
            protected internal override System.Object CreateValue(IndexReader reader, System.Object entryKey)
            {
                Entry entry = (Entry)entryKey;

                System.String field  = entry.field;
                FloatParser   parser = (FloatParser)entry.custom;

                float[]  retArray = new float[reader.MaxDoc()];
                TermDocs termDocs = reader.TermDocs();
                TermEnum termEnum = reader.Terms(new Term(field, ""));

                try
                {
                    do
                    {
                        Term term = termEnum.Term();
                        if (term == null || (System.Object)term.Field() != (System.Object)field)
                        {
                            break;
                        }
                        float termval = parser.ParseFloat(term.Text());
                        termDocs.Seek(termEnum);
                        while (termDocs.Next())
                        {
                            retArray[termDocs.Doc()] = termval;
                        }
                    }while (termEnum.Next());
                }
                finally
                {
                    termDocs.Close();
                    termEnum.Close();
                }
                return(retArray);
            }
Esempio n. 2
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            protected internal override System.Object CreateValue(IndexReader reader, Entry entryKey)
            {
                Entry entry = (Entry)entryKey;

                System.String  field      = entry.field;
                SortComparator comparator = (SortComparator)entry.custom;

                System.IComparable[] retArray = new System.IComparable[reader.MaxDoc()];
                TermDocs             termDocs = reader.TermDocs();
                TermEnum             termEnum = reader.Terms(new Term(field));

                try
                {
                    do
                    {
                        Term term = termEnum.Term();
                        if (term == null || (System.Object)term.Field() != (System.Object)field)
                        {
                            break;
                        }
                        System.IComparable termval = comparator.GetComparable(term.Text());
                        termDocs.Seek(termEnum);
                        while (termDocs.Next())
                        {
                            retArray[termDocs.Doc()] = termval;
                        }
                    }while (termEnum.Next());
                }
                finally
                {
                    termDocs.Close();
                    termEnum.Close();
                }
                return(retArray);
            }
Esempio n. 3
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            protected internal override System.Object CreateValue(IndexReader reader, Entry entryKey, IState state)
            {
                System.String   field    = StringHelper.Intern(entryKey.field);
                System.String[] retArray = new System.String[reader.MaxDoc];
                TermDocs        termDocs = reader.TermDocs(state);
                TermEnum        termEnum = reader.Terms(new Term(field), state);

                try
                {
                    do
                    {
                        Term term = termEnum.Term;
                        if (term == null || (System.Object)term.Field != (System.Object)field)
                        {
                            break;
                        }
                        System.String termval = term.Text;
                        termDocs.Seek(termEnum, state);
                        while (termDocs.Next(state))
                        {
                            retArray[termDocs.Doc] = termval;
                        }
                    }while (termEnum.Next(state));
                }
                finally
                {
                    termDocs.Close();
                    termEnum.Close();
                }
                return(retArray);
            }
Esempio n. 4
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            protected internal override System.Object CreateValue(IndexReader reader, System.Object fieldKey)
            {
                System.String   field    = String.Intern(((System.String)fieldKey));
                System.String[] retArray = new System.String[reader.MaxDoc()];
                TermDocs        termDocs = reader.TermDocs();
                TermEnum        termEnum = reader.Terms(new Term(field, ""));

                try
                {
                    do
                    {
                        Term term = termEnum.Term();
                        if (term == null || (System.Object)term.Field() != (System.Object)field)
                        {
                            break;
                        }
                        System.String termval = term.Text();
                        termDocs.Seek(termEnum);
                        while (termDocs.Next())
                        {
                            retArray[termDocs.Doc()] = termval;
                        }
                    }while (termEnum.Next());
                }
                finally
                {
                    termDocs.Close();
                    termEnum.Close();
                }
                return(retArray);
            }
Esempio n. 5
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            protected internal override System.Object CreateValue(IndexReader reader, Entry entryKey)
            {
                Entry entry = (Entry)entryKey;

                System.String field  = entry.field;
                FloatParser   parser = (FloatParser)entry.custom;

                if (parser == null)
                {
                    try
                    {
                        return(wrapper.GetFloats(reader, field, Lucene.Net.Search.FieldCache_Fields.DEFAULT_FLOAT_PARSER));
                    }
                    catch (System.FormatException ne)
                    {
                        return(wrapper.GetFloats(reader, field, Lucene.Net.Search.FieldCache_Fields.NUMERIC_UTILS_FLOAT_PARSER));
                    }
                }
                float[]  retArray = null;
                TermDocs termDocs = reader.TermDocs();
                TermEnum termEnum = reader.Terms(new Term(field));

                try
                {
                    do
                    {
                        Term term = termEnum.Term();
                        if (term == null || (System.Object)term.Field() != (System.Object)field)
                        {
                            break;
                        }
                        float termval = parser.ParseFloat(term.Text());
                        if (retArray == null)
                        {
                            // late init
                            retArray = new float[reader.MaxDoc()];
                        }
                        termDocs.Seek(termEnum);
                        while (termDocs.Next())
                        {
                            retArray[termDocs.Doc()] = termval;
                        }
                    }while (termEnum.Next());
                }
                catch (StopFillCacheException stop)
                {
                }
                finally
                {
                    termDocs.Close();
                    termEnum.Close();
                }
                if (retArray == null)
                {
                    // no values
                    retArray = new float[reader.MaxDoc()];
                }
                return(retArray);
            }
Esempio n. 6
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            protected internal override System.Object CreateValue(IndexReader reader, Entry entryKey, IState state)
            {
                Entry entry = entryKey;

                System.String field  = entry.field;
                IntParser     parser = (IntParser)entry.custom;

                if (parser == null)
                {
                    try
                    {
                        return(wrapper.GetInts(reader, field, Lucene.Net.Search.FieldCache_Fields.DEFAULT_INT_PARSER, state));
                    }
                    catch (System.FormatException)
                    {
                        return(wrapper.GetInts(reader, field, Lucene.Net.Search.FieldCache_Fields.NUMERIC_UTILS_INT_PARSER, state));
                    }
                }
                int[]    retArray = null;
                TermDocs termDocs = reader.TermDocs(state);
                TermEnum termEnum = reader.Terms(new Term(field), state);

                try
                {
                    do
                    {
                        Term term = termEnum.Term;
                        if (term == null || (System.Object)term.Field != (System.Object)field)
                        {
                            break;
                        }
                        int termval = parser.ParseInt(term.Text);
                        if (retArray == null)
                        {
                            // late init
                            retArray = new int[reader.MaxDoc];
                        }
                        termDocs.Seek(termEnum, state);
                        while (termDocs.Next(state))
                        {
                            retArray[termDocs.Doc] = termval;
                        }
                    }while (termEnum.Next(state));
                }
                catch (StopFillCacheException)
                {
                }
                finally
                {
                    termDocs.Close();
                    termEnum.Close();
                }
                if (retArray == null)
                {
                    // no values
                    retArray = new int[reader.MaxDoc];
                }
                return(retArray);
            }
        public override DocIdSet GetDocIdSet(IndexReader reader)
        {
            TermEnum enumerator = query.GetEnum(reader);

            try
            {
                // if current term in enum is null, the enum is empty -> shortcut
                if (enumerator.Term == null)
                {
                    return(DocIdSet.EMPTY_DOCIDSET);
                }
                // else fill into an OpenBitSet
                OpenBitSet bitSet   = new OpenBitSet(reader.MaxDoc);
                int[]      docs     = new int[32];
                int[]      freqs    = new int[32];
                TermDocs   termDocs = reader.TermDocs();
                try
                {
                    int termCount = 0;
                    do
                    {
                        Term term = enumerator.Term;
                        if (term == null)
                        {
                            break;
                        }
                        termCount++;
                        termDocs.Seek(term);
                        while (true)
                        {
                            int count = termDocs.Read(docs, freqs);
                            if (count != 0)
                            {
                                for (int i = 0; i < count; i++)
                                {
                                    bitSet.Set(docs[i]);
                                }
                            }
                            else
                            {
                                break;
                            }
                        }
                    } while (enumerator.Next());

                    query.IncTotalNumberOfTerms(termCount); // {{Aroush-2.9}} is the use of 'temp' as is right?
                }
                finally
                {
                    termDocs.Close();
                }

                return(bitSet);
            }
            finally
            {
                enumerator.Close();
            }
        }
Esempio n. 8
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            protected internal override object CreateValue(IndexReader reader, Entry entryKey)
            {
                Entry  entry = entryKey;
                string field = entry.field;

                Lucene.Net.Search.DoubleParser parser = (Lucene.Net.Search.DoubleParser)entry.custom;
                if (parser == null)
                {
                    try
                    {
                        return(wrapper.GetDoubles(reader, field, Lucene.Net.Search.FieldCache_Fields.DEFAULT_DOUBLE_PARSER));
                    }
                    catch (System.FormatException)
                    {
                        return(wrapper.GetDoubles(reader, field, Lucene.Net.Search.FieldCache_Fields.NUMERIC_UTILS_DOUBLE_PARSER));
                    }
                }
                double[] retArray = null;
                TermDocs termDocs = reader.TermDocs();
                TermEnum termEnum = reader.Terms(new Term(field));

                try
                {
                    do
                    {
                        Term term = termEnum.Term;
                        if (term == null || (object)term.Field != (object)field)
                        {
                            break;
                        }
                        double termval = parser.ParseDouble(term.Text);
                        if (retArray == null)
                        {
                            // late init
                            retArray = new double[reader.MaxDoc];
                        }
                        termDocs.Seek(termEnum);
                        while (termDocs.Next())
                        {
                            retArray[termDocs.Doc] = termval;
                        }
                    }while (termEnum.Next());
                }
                catch (StopFillCacheException)
                {
                }
                finally
                {
                    termDocs.Close();
                    termEnum.Close();
                }
                if (retArray == null)
                {
                    // no values
                    retArray = new double[reader.MaxDoc];
                }
                return(retArray);
            }
Esempio n. 9
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 // inherit javadocs
 public virtual float[] GetFloats(IndexReader reader, System.String field, FloatParser parser)
 {
     field = String.Intern(field);
     System.Object ret = Lookup(reader, field, parser);
     if (ret == null)
     {
         float[] retArray = new float[reader.MaxDoc()];
         if (retArray.Length > 0)
         {
             TermDocs termDocs = reader.TermDocs();
             TermEnum termEnum = reader.Terms(new Term(field, ""));
             try
             {
                 if (termEnum.Term() == null)
                 {
                     throw new System.SystemException("no terms in field " + field);
                 }
                 do
                 {
                     Term term = termEnum.Term();
                     if (term.Field() != field)
                     {
                         break;
                     }
                     float termval;
                     try
                     {
                         termval = SupportClass.Single.Parse(term.Text());
                     }
                     catch (Exception e)
                     {
                         termval = 0;
                     }
                     termDocs.Seek(termEnum);
                     while (termDocs.Next())
                     {
                         retArray[termDocs.Doc()] = termval;
                     }
                 }while (termEnum.Next());
             }
             finally
             {
                 termDocs.Close();
                 termEnum.Close();
             }
         }
         Store(reader, field, parser, retArray);
         return(retArray);
     }
     return((float[])ret);
 }
Esempio n. 10
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 // inherit javadocs
 public virtual System.IComparable[] GetCustom(IndexReader reader, System.String field, SortComparator comparator)
 {
     field = String.Intern(field);
     System.Object ret = Lookup(reader, field, comparator);
     if (ret == null)
     {
         System.IComparable[] retArray = new System.IComparable[reader.MaxDoc()];
         if (retArray.Length > 0)
         {
             TermDocs termDocs = reader.TermDocs();
             TermEnum termEnum = reader.Terms(new Term(field, ""));
             try
             {
                 if (termEnum.Term() == null)
                 {
                     throw new System.SystemException("no terms in field " + field);
                 }
                 do
                 {
                     Term term = termEnum.Term();
                     if (term.Field() != field)
                     {
                         break;
                     }
                     System.IComparable termval = comparator.GetComparable(term.Text());
                     termDocs.Seek(termEnum);
                     while (termDocs.Next())
                     {
                         retArray[termDocs.Doc()] = termval;
                     }
                 }while (termEnum.Next());
             }
             finally
             {
                 termDocs.Close();
                 termEnum.Close();
             }
         }
         Store(reader, field, comparator, retArray);
         return(retArray);
     }
     return((System.IComparable[])ret);
 }
            public virtual void Generate(MultiTermQuery query, IndexReader reader, TermEnum enumerator)
            {
                int[]    docs     = new int[32];
                int[]    freqs    = new int[32];
                TermDocs termDocs = reader.TermDocs();

                try
                {
                    int termCount = 0;
                    do
                    {
                        Term term = enumerator.Term();
                        if (term == null)
                        {
                            break;
                        }
                        termCount++;
                        termDocs.Seek(term);
                        while (true)
                        {
                            int count = termDocs.Read(docs, freqs);
                            if (count != 0)
                            {
                                for (int i = 0; i < count; i++)
                                {
                                    HandleDoc(docs[i]);
                                }
                            }
                            else
                            {
                                break;
                            }
                        }
                    }while (enumerator.Next());

                    query.IncTotalNumberOfTerms(termCount);                     // {{Aroush-2.9}} is the use of 'temp' as is right?
                }
                finally
                {
                    termDocs.Close();
                }
            }
Esempio n. 12
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            protected internal override System.Object CreateValue(IndexReader reader, Entry entryKey)
            {
                Entry entry = (Entry)entryKey;

                System.String field  = entry.field;
                ShortParser   parser = (ShortParser)entry.custom;

                if (parser == null)
                {
                    return(wrapper.GetShorts(reader, field, Lucene.Net.Search.FieldCache_Fields.DEFAULT_SHORT_PARSER));
                }
                short[]  retArray = new short[reader.MaxDoc()];
                TermDocs termDocs = reader.TermDocs();
                TermEnum termEnum = reader.Terms(new Term(field));

                try
                {
                    do
                    {
                        Term term = termEnum.Term();
                        if (term == null || (System.Object)term.Field() != (System.Object)field)
                        {
                            break;
                        }
                        short termval = parser.ParseShort(term.Text());
                        termDocs.Seek(termEnum);
                        while (termDocs.Next())
                        {
                            retArray[termDocs.Doc()] = termval;
                        }
                    }while (termEnum.Next());
                }
                catch (StopFillCacheException stop)
                {
                }
                finally
                {
                    termDocs.Close();
                    termEnum.Close();
                }
                return(retArray);
            }
Esempio n. 13
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            protected internal override System.Object CreateValue(IndexReader reader, Entry entryKey, IState state)
            {
                Entry entry = entryKey;

                System.String field  = entry.field;
                ByteParser    parser = (ByteParser)entry.custom;

                if (parser == null)
                {
                    return(wrapper.GetBytes(reader, field, Lucene.Net.Search.FieldCache_Fields.DEFAULT_BYTE_PARSER, state));
                }
                sbyte[]  retArray = new sbyte[reader.MaxDoc];
                TermDocs termDocs = reader.TermDocs(state);
                TermEnum termEnum = reader.Terms(new Term(field), state);

                try
                {
                    do
                    {
                        Term term = termEnum.Term;
                        if (term == null || (System.Object)term.Field != (System.Object)field)
                        {
                            break;
                        }
                        sbyte termval = parser.ParseByte(term.Text);
                        termDocs.Seek(termEnum, state);
                        while (termDocs.Next(state))
                        {
                            retArray[termDocs.Doc] = termval;
                        }
                    }while (termEnum.Next(state));
                }
                catch (StopFillCacheException)
                {
                }
                finally
                {
                    termDocs.Close();
                    termEnum.Close();
                }
                return(retArray);
            }
Esempio n. 14
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 // inherit javadocs
 public virtual int[] GetInts(IndexReader reader, System.String field, IntParser parser)
 {
     field = String.Intern(field);
     System.Object ret = Lookup(reader, field, parser);
     if (ret == null)
     {
         int[]    retArray = new int[reader.MaxDoc()];
         TermDocs termDocs = reader.TermDocs();
         TermEnum termEnum = reader.Terms(new Term(field, ""));
         try
         {
             do
             {
                 Term term = termEnum.Term();
                 if (term == null || term.Field() != field)
                 {
                     break;
                 }
                 int termval = parser.ParseInt(term.Text());
                 termDocs.Seek(termEnum);
                 while (termDocs.Next())
                 {
                     retArray[termDocs.Doc()] = termval;
                 }
             }while (termEnum.Next());
         }
         finally
         {
             termDocs.Close();
             termEnum.Close();
         }
         Store(reader, field, parser, retArray);
         return(retArray);
     }
     return((int[])ret);
 }
Esempio n. 15
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 // inherit javadocs
 public virtual System.String[] GetStrings(IndexReader reader, System.String field)
 {
     field = String.Intern(field);
     System.Object ret = Lookup(reader, field, SortField.STRING, null);
     if (ret == null)
     {
         System.String[] retArray = new System.String[reader.MaxDoc()];
         TermDocs        termDocs = reader.TermDocs();
         TermEnum        termEnum = reader.Terms(new Term(field, ""));
         try
         {
             do
             {
                 Term term = termEnum.Term();
                 if (term == null || term.Field() != field)
                 {
                     break;
                 }
                 System.String termval = term.Text();
                 termDocs.Seek(termEnum);
                 while (termDocs.Next())
                 {
                     retArray[termDocs.Doc()] = termval;
                 }
             }while (termEnum.Next());
         }
         finally
         {
             termDocs.Close();
             termEnum.Close();
         }
         Store(reader, field, SortField.STRING, null, retArray);
         return(retArray);
     }
     return((System.String[])ret);
 }
Esempio n. 16
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            protected internal override System.Object CreateValue(IndexReader reader, Entry entryKey)
            {
                System.String   field    = StringHelper.Intern((System.String)entryKey.field);
                int[]           retArray = new int[reader.MaxDoc()];
                System.String[] mterms   = new System.String[reader.MaxDoc() + 1];
                TermDocs        termDocs = reader.TermDocs();
                TermEnum        termEnum = reader.Terms(new Term(field));
                int             t        = 0; // current term number

                // an entry for documents that have no terms in this field
                // should a document with no terms be at top or bottom?
                // this puts them at the top - if it is changed, FieldDocSortedHitQueue
                // needs to change as well.
                mterms[t++] = null;

                try
                {
                    do
                    {
                        Term term = termEnum.Term();
                        if (term == null || (System.Object)term.Field() != (System.Object)field)
                        {
                            break;
                        }

                        // store term text
                        // we expect that there is at most one term per document
                        if (t >= mterms.Length)
                        {
                            throw new System.SystemException("there are more terms than " + "documents in field \"" + field + "\", but it's impossible to sort on " + "tokenized fields");
                        }
                        mterms[t] = term.Text();

                        termDocs.Seek(termEnum);
                        while (termDocs.Next())
                        {
                            retArray[termDocs.Doc()] = t;
                        }

                        t++;
                    }while (termEnum.Next());
                }
                finally
                {
                    termDocs.Close();
                    termEnum.Close();
                }

                if (t == 0)
                {
                    // if there are no terms, make the term array
                    // have a single null entry
                    mterms = new System.String[1];
                }
                else if (t < mterms.Length)
                {
                    // if there are less terms than documents,
                    // trim off the dead array space
                    System.String[] terms = new System.String[t];
                    Array.Copy(mterms, 0, terms, 0, t);
                    mterms = terms;
                }

                StringIndex value_Renamed = new StringIndex(retArray, mterms);

                return(value_Renamed);
            }
Esempio n. 17
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            protected internal override object CreateValue(IndexReader reader, Entry entryKey)
            {
                string field = StringHelper.Intern(entryKey.field);

                int[]    retArray = new int[reader.MaxDoc];
                string[] mterms   = new string[reader.MaxDoc + 1];
                TermDocs termDocs = reader.TermDocs();
                TermEnum termEnum = reader.Terms(new Term(field));
                int      t        = 0; // current term number

                // an entry for documents that have no terms in this field
                // should a document with no terms be at top or bottom?
                // this puts them at the top - if it is changed, FieldDocSortedHitQueue
                // needs to change as well.
                mterms[t++] = null;

                try
                {
                    do
                    {
                        Term term = termEnum.Term;
                        if (term == null || term.Field != field || t >= mterms.Length)
                        {
                            break;
                        }

                        // store term text
                        mterms[t] = term.Text;

                        termDocs.Seek(termEnum);
                        while (termDocs.Next())
                        {
                            retArray[termDocs.Doc] = t;
                        }

                        t++;
                    }while (termEnum.Next());
                }
                finally
                {
                    termDocs.Close();
                    termEnum.Close();
                }

                if (t == 0)
                {
                    // if there are no terms, make the term array
                    // have a single null entry
                    mterms = new string[1];
                }
                else if (t < mterms.Length)
                {
                    // if there are less terms than documents,
                    // trim off the dead array space
                    string[] terms = new string[t];
                    Array.Copy(mterms, 0, terms, 0, t);
                    mterms = terms;
                }

                StringIndex value_Renamed = new StringIndex(retArray, mterms);

                return(value_Renamed);
            }
Esempio n. 18
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        /// <summary> Returns a BitSet with true for documents which should be
        /// permitted in search results, and false for those that should
        /// not.
        /// </summary>
        public override System.Collections.BitArray Bits(IndexReader reader)
        {
            System.Collections.BitArray bits = new System.Collections.BitArray((reader.MaxDoc() % 64 == 0 ? reader.MaxDoc() / 64 : reader.MaxDoc() / 64 + 1) * 64);
            TermEnum enumerator = (null != lowerTerm ? reader.Terms(new Term(fieldName, lowerTerm)) : reader.Terms(new Term(fieldName, "")));

            try
            {
                if (enumerator.Term() == null)
                {
                    return(bits);
                }

                bool checkLower = false;
                if (!includeLower)
                {
                    // make adjustments to set to exclusive
                    checkLower = true;
                }

                TermDocs termDocs = reader.TermDocs();
                try
                {
                    do
                    {
                        Term term = enumerator.Term();
                        if (term != null && term.Field().Equals(fieldName))
                        {
                            if (!checkLower || null == lowerTerm || String.CompareOrdinal(term.Text(), lowerTerm) > 0)
                            {
                                checkLower = false;
                                if (upperTerm != null)
                                {
                                    int compare = String.CompareOrdinal(upperTerm, term.Text());

                                    /* if beyond the upper term, or is exclusive and
                                     * this is equal to the upper term, break out */
                                    if ((compare < 0) || (!includeUpper && compare == 0))
                                    {
                                        break;
                                    }
                                }
                                /* we have a good term, find the docs */

                                termDocs.Seek(enumerator.Term());
                                while (termDocs.Next())
                                {
                                    bits.Set(termDocs.Doc(), true);
                                }
                            }
                        }
                        else
                        {
                            break;
                        }
                    }while (enumerator.Next());
                }
                finally
                {
                    termDocs.Close();
                }
            }
            finally
            {
                enumerator.Close();
            }

            return(bits);
        }
Esempio n. 19
0
        /// <summary> Returns a DocIdSet with documents that should be
        /// permitted in search results.
        /// </summary>
        public override DocIdSet GetDocIdSet(IndexReader reader)
        {
            OpenBitSet bits = new OpenBitSet(reader.MaxDoc());

            TermEnum enumerator = (null != lowerTerm && collator == null ?
                                   reader.Terms(new Term(fieldName, lowerTerm)) :
                                   reader.Terms(new Term(fieldName)));

            try
            {
                if (enumerator.Term() == null)
                {
                    return(bits);
                }

                TermDocs termDocs = reader.TermDocs();
                try
                {
                    if (collator != null)
                    {
                        do
                        {
                            Term term = enumerator.Term();
                            if (term != null && term.Field().Equals(fieldName))
                            {
                                if ((lowerTerm == null ||
                                     (includeLower ? collator.Compare(term.Text(), lowerTerm) >= 0 : collator.Compare(term.Text(), lowerTerm) > 0)) &&
                                    (upperTerm == null ||
                                     (includeUpper ? collator.Compare(term.Text(), upperTerm) <= 0 : collator.Compare(term.Text(), upperTerm) < 0)))
                                {
                                    // term in range, lookup docs
                                    termDocs.Seek(enumerator.Term());
                                    while (termDocs.Next())
                                    {
                                        bits.Set(termDocs.Doc());
                                    }
                                }
                            }
                        }while (enumerator.Next());
                    }
                    else // null collator; using Unicode code point ordering
                    {
                        bool checkLower = false;
                        if (!includeLower) // make adjustments to set to exclusive
                        {
                            checkLower = true;
                        }
                        do
                        {
                            Term term = enumerator.Term();
                            if (term != null && term.Field().Equals(fieldName))
                            {
                                if (!checkLower || null == lowerTerm || String.CompareOrdinal(term.Text(), lowerTerm) > 0)
                                {
                                    checkLower = false;
                                    if (upperTerm != null)
                                    {
                                        int compare = String.CompareOrdinal(upperTerm, term.Text());

                                        /* if beyond the upper term, or is exclusive and
                                         * this is equal to the upper term, break out */
                                        if ((compare < 0) || (!includeUpper && compare == 0))
                                        {
                                            break;
                                        }
                                    }
                                    /* we have a good term, find the docs */

                                    termDocs.Seek(enumerator.Term());
                                    while (termDocs.Next())
                                    {
                                        bits.Set(termDocs.Doc());
                                    }
                                }
                            }
                            else
                            {
                                break;
                            }
                        }while (enumerator.Next());
                    }
                }
                finally
                {
                    termDocs.Close();
                }
            }
            finally
            {
                enumerator.Close();
            }

            return(bits);
        }
Esempio n. 20
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        // inherit javadocs
        public virtual StringIndex GetStringIndex(IndexReader reader, System.String field)
        {
            field = String.Intern(field);
            System.Object ret = Lookup(reader, field, Lucene.Net.Search.FieldCache_Fields.STRING_INDEX);
            if (ret == null)
            {
                int[]           retArray = new int[reader.MaxDoc()];
                System.String[] mterms   = new System.String[reader.MaxDoc() + 1];
                if (retArray.Length > 0)
                {
                    TermDocs termDocs = reader.TermDocs();
                    TermEnum termEnum = reader.Terms(new Term(field, ""));
                    int      t        = 0;         // current term number

                    // an entry for documents that have no terms in this field
                    // should a document with no terms be at top or bottom?
                    // this puts them at the top - if it is changed, FieldDocSortedHitQueue
                    // needs to change as well.
                    mterms[t++] = null;

                    try
                    {
                        if (termEnum.Term() == null)
                        {
                            throw new System.SystemException("no terms in field " + field);
                        }
                        do
                        {
                            Term term = termEnum.Term();
                            if (term.Field() != field)
                            {
                                break;
                            }

                            // store term text
                            // we expect that there is at most one term per document
                            if (t >= mterms.Length)
                            {
                                throw new System.SystemException("there are more terms than " + "documents in field \"" + field + "\", but it's impossible to sort on " + "tokenized fields");
                            }
                            mterms[t] = term.Text();

                            termDocs.Seek(termEnum);
                            while (termDocs.Next())
                            {
                                retArray[termDocs.Doc()] = t;
                            }

                            t++;
                        }while (termEnum.Next());
                    }
                    finally
                    {
                        termDocs.Close();
                        termEnum.Close();
                    }

                    if (t == 0)
                    {
                        // if there are no terms, make the term array
                        // have a single null entry
                        mterms = new System.String[1];
                    }
                    else if (t < mterms.Length)
                    {
                        // if there are less terms than documents,
                        // trim off the dead array space
                        System.String[] terms = new System.String[t];
                        Array.Copy(mterms, 0, terms, 0, t);
                        mterms = terms;
                    }
                }
                StringIndex value_Renamed = new StringIndex(retArray, mterms);
                Store(reader, field, Lucene.Net.Search.FieldCache_Fields.STRING_INDEX, value_Renamed);
                return(value_Renamed);
            }
            return((StringIndex)ret);
        }
Esempio n. 21
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            public override Explanation Explain(IndexReader reader, int doc)
            {
                ComplexExplanation result = new ComplexExplanation();

                result.Description = "weight(" + Query + " in " + doc + "), product of:";

                Explanation expl = new Explanation(idf, idfExp.Explain());

                // explain query weight
                Explanation queryExpl = new Explanation();

                queryExpl.Description = "queryWeight(" + Query + "), product of:";

                Explanation boostExpl = new Explanation(Enclosing_Instance.Boost, "boost");

                if (Enclosing_Instance.Boost != 1.0f)
                {
                    queryExpl.AddDetail(boostExpl);
                }
                queryExpl.AddDetail(expl);

                Explanation queryNormExpl = new Explanation(queryNorm, "queryNorm");

                queryExpl.AddDetail(queryNormExpl);

                queryExpl.Value = boostExpl.Value * expl.Value * queryNormExpl.Value;

                result.AddDetail(queryExpl);

                // explain field weight
                string             field     = Enclosing_Instance.term.Field;
                ComplexExplanation fieldExpl = new ComplexExplanation();

                fieldExpl.Description = "fieldWeight(" + Enclosing_Instance.term + " in " + doc + "), product of:";

                Explanation tfExplanation = new Explanation();
                int         tf            = 0;
                TermDocs    termDocs      = reader.TermDocs(enclosingInstance.term);

                if (termDocs != null)
                {
                    try
                    {
                        if (termDocs.SkipTo(doc) && termDocs.Doc == doc)
                        {
                            tf = termDocs.Freq;
                        }
                    }
                    finally
                    {
                        termDocs.Close();
                    }
                    tfExplanation.Value       = similarity.Tf(tf);
                    tfExplanation.Description = "tf(termFreq(" + enclosingInstance.term + ")=" + tf + ")";
                }
                else
                {
                    tfExplanation.Value       = 0.0f;
                    tfExplanation.Description = "no matching term";
                }
                fieldExpl.AddDetail(tfExplanation);
                fieldExpl.AddDetail(expl);

                Explanation fieldNormExpl = new Explanation();

                byte[] fieldNorms = reader.Norms(field);
                float  fieldNorm  = fieldNorms != null?Similarity.DecodeNorm(fieldNorms[doc]) : 1.0f;

                fieldNormExpl.Value       = fieldNorm;
                fieldNormExpl.Description = "fieldNorm(field=" + field + ", doc=" + doc + ")";
                fieldExpl.AddDetail(fieldNormExpl);

                fieldExpl.Match = tfExplanation.IsMatch;
                fieldExpl.Value = tfExplanation.Value * expl.Value * fieldNormExpl.Value;

                result.AddDetail(fieldExpl);
                bool?tempAux = fieldExpl.Match;

                result.Match = tempAux;

                // combine them
                result.Value = queryExpl.Value * fieldExpl.Value;

                if (queryExpl.Value == 1.0f)
                {
                    return(fieldExpl);
                }

                return(result);
            }