/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
using IndexReader = Lucene.Net.Index.IndexReader;
using Term = Lucene.Net.Index.Term;
using TermDocs = Lucene.Net.Index.TermDocs;
using TermEnum = Lucene.Net.Index.TermEnum;
namespace Lucene.Net.Search
{
/// <summary> Expert: The default cache implementation, storing all values in memory.
/// A WeakHashMap is used for storage.
///
/// <p>Created: May 19, 2004 4:40:36 PM
///
/// </summary>
/// <author> Tim Jones (Nacimiento Software)
/// </author>
/// <since> lucene 1.4
/// </since>
/// <version> $Id: FieldCacheImpl.java 605225 2007-12-18 15:13:05Z gsingers $
/// </version>
public class FieldCacheImpl : FieldCache
{
public virtual void Close(IndexReader reader)
{
}
public FieldCacheImpl()
{
InitBlock();
}
public class AnonymousClassByteParser : ByteParser
{
public virtual byte ParseByte(System.String value_Renamed)
{
return (byte) System.Byte.Parse(value_Renamed);
}
}
public class AnonymousClassShortParser : ShortParser
{
public virtual short ParseShort(System.String value_Renamed)
{
return System.Int16.Parse(value_Renamed);
}
}
public class AnonymousClassIntParser : IntParser
{
public virtual int ParseInt(System.String value_Renamed)
{
return System.Int32.Parse(value_Renamed);
}
}
public class AnonymousClassFloatParser : FloatParser
{
public virtual float ParseFloat(System.String value_Renamed)
{
return SupportClass.Single.Parse(value_Renamed);
}
}
internal class AnonymousClassCache : Cache
{
public AnonymousClassCache(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
InitBlock(enclosingInstance);
}
private void InitBlock(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
this.enclosingInstance = enclosingInstance;
}
private Lucene.Net.Search.FieldCacheImpl enclosingInstance;
public Lucene.Net.Search.FieldCacheImpl Enclosing_Instance
{
get
{
return enclosingInstance;
}
}
protected internal override System.Object CreateValue(IndexReader reader, System.Object entryKey)
{
Entry entry = (Entry) entryKey;
System.String field = entry.field;
ByteParser parser = (ByteParser) entry.custom;
byte[] retArray = new byte[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;
byte termval = parser.ParseByte(term.Text());
termDocs.Seek(termEnum);
while (termDocs.Next())
{
retArray[termDocs.Doc()] = termval;
}
}
while (termEnum.Next());
}
finally
{
termDocs.Close();
termEnum.Close();
}
return retArray;
}
}
internal class AnonymousClassCache1 : Cache
{
public AnonymousClassCache1(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
InitBlock(enclosingInstance);
}
private void InitBlock(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
this.enclosingInstance = enclosingInstance;
}
private Lucene.Net.Search.FieldCacheImpl enclosingInstance;
public Lucene.Net.Search.FieldCacheImpl Enclosing_Instance
{
get
{
return enclosingInstance;
}
}
protected internal override System.Object CreateValue(IndexReader reader, System.Object entryKey)
{
Entry entry = (Entry) entryKey;
System.String field = entry.field;
ShortParser parser = (ShortParser) entry.custom;
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());
}
finally
{
termDocs.Close();
termEnum.Close();
}
return retArray;
}
}
internal class AnonymousClassCache2 : Cache
{
public AnonymousClassCache2(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
InitBlock(enclosingInstance);
}
private void InitBlock(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
this.enclosingInstance = enclosingInstance;
}
private Lucene.Net.Search.FieldCacheImpl enclosingInstance;
public Lucene.Net.Search.FieldCacheImpl Enclosing_Instance
{
get
{
return enclosingInstance;
}
}
protected internal override System.Object CreateValue(IndexReader reader, System.Object entryKey)
{
Entry entry = (Entry) entryKey;
System.String field = entry.field;
IntParser parser = (IntParser) entry.custom;
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 || (System.Object) term.Field() != (System.Object) 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();
}
return retArray;
}
}
internal class AnonymousClassCache3 : Cache
{
public AnonymousClassCache3(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
InitBlock(enclosingInstance);
}
private void InitBlock(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
this.enclosingInstance = enclosingInstance;
}
private Lucene.Net.Search.FieldCacheImpl enclosingInstance;
public Lucene.Net.Search.FieldCacheImpl Enclosing_Instance
{
get
{
return enclosingInstance;
}
}
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;
}
}
internal class AnonymousClassCache4 : Cache
{
public AnonymousClassCache4(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
InitBlock(enclosingInstance);
}
private void InitBlock(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
this.enclosingInstance = enclosingInstance;
}
private Lucene.Net.Search.FieldCacheImpl enclosingInstance;
public Lucene.Net.Search.FieldCacheImpl Enclosing_Instance
{
get
{
return enclosingInstance;
}
}
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;
}
}
internal class AnonymousClassCache5 : Cache
{
public AnonymousClassCache5(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
InitBlock(enclosingInstance);
}
private void InitBlock(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
this.enclosingInstance = enclosingInstance;
}
private Lucene.Net.Search.FieldCacheImpl enclosingInstance;
public Lucene.Net.Search.FieldCacheImpl Enclosing_Instance
{
get
{
return enclosingInstance;
}
}
protected internal override System.Object CreateValue(IndexReader reader, System.Object fieldKey)
{
System.String field = String.Intern(((System.String) fieldKey));
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;
}
}
internal class AnonymousClassCache6 : Cache
{
public AnonymousClassCache6(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
InitBlock(enclosingInstance);
}
private void InitBlock(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
this.enclosingInstance = enclosingInstance;
}
private Lucene.Net.Search.FieldCacheImpl enclosingInstance;
public Lucene.Net.Search.FieldCacheImpl Enclosing_Instance
{
get
{
return enclosingInstance;
}
}
protected internal override System.Object CreateValue(IndexReader reader, System.Object fieldKey)
{
System.String field = String.Intern(((System.String) fieldKey));
TermEnum enumerator = reader.Terms(new Term(field, ""));
try
{
Term term = enumerator.Term();
if (term == null)
{
throw new System.SystemException("no terms in field " + field + " - cannot determine sort type");
}
System.Object ret = null;
if ((System.Object) term.Field() == (System.Object) field)
{
System.String termtext = term.Text().Trim();
/**
* Java 1.4 level code:
if (pIntegers.matcher(termtext).matches())
return IntegerSortedHitQueue.comparator (reader, enumerator, field);
else if (pFloats.matcher(termtext).matches())
return FloatSortedHitQueue.comparator (reader, enumerator, field);
*/
// Java 1.3 level code:
try
{
System.Int32.Parse(termtext);
ret = Enclosing_Instance.GetInts(reader, field);
}
catch (System.FormatException nfe1)
{
try
{
SupportClass.Single.Parse(termtext);
ret = Enclosing_Instance.GetFloats(reader, field);
}
catch (System.FormatException nfe3)
{
ret = Enclosing_Instance.GetStringIndex(reader, field);
}
}
}
else
{
throw new System.SystemException("field \"" + field + "\" does not appear to be indexed");
}
return ret;
}
finally
{
enumerator.Close();
}
}
}
internal class AnonymousClassCache7 : Cache
{
public AnonymousClassCache7(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
InitBlock(enclosingInstance);
}
private void InitBlock(Lucene.Net.Search.FieldCacheImpl enclosingInstance)
{
this.enclosingInstance = enclosingInstance;
}
private Lucene.Net.Search.FieldCacheImpl enclosingInstance;
public Lucene.Net.Search.FieldCacheImpl Enclosing_Instance
{
get
{
return enclosingInstance;
}
}
protected internal override System.Object CreateValue(IndexReader reader, System.Object 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;
}
}
private void InitBlock()
{
bytesCache = new AnonymousClassCache(this);
shortsCache = new AnonymousClassCache1(this);
intsCache = new AnonymousClassCache2(this);
floatsCache = new AnonymousClassCache3(this);
stringsCache = new AnonymousClassCache4(this);
stringsIndexCache = new AnonymousClassCache5(this);
autoCache = new AnonymousClassCache6(this);
customCache = new AnonymousClassCache7(this);
}
/// <summary>Expert: Internal cache. </summary>
internal abstract class Cache
{
private System.Collections.IDictionary readerCache = new System.Collections.Hashtable();
protected internal abstract System.Object CreateValue(IndexReader reader, System.Object key);
public virtual System.Object Get(IndexReader reader, System.Object key)
{
System.Collections.IDictionary innerCache;
System.Object value_Renamed;
lock (readerCache.SyncRoot)
{
innerCache = (System.Collections.IDictionary) readerCache[reader];
if (innerCache == null)
{
innerCache = new System.Collections.Hashtable();
readerCache[reader] = innerCache;
value_Renamed = null;
}
else
{
value_Renamed = innerCache[key];
}
if (value_Renamed == null)
{
value_Renamed = new CreationPlaceholder();
innerCache[key] = value_Renamed;
}
}
if (value_Renamed is CreationPlaceholder)
{
lock (value_Renamed)
{
CreationPlaceholder progress = (CreationPlaceholder) value_Renamed;
if (progress.value_Renamed == null)
{
progress.value_Renamed = CreateValue(reader, key);
lock (readerCache.SyncRoot)
{
innerCache[key] = progress.value_Renamed;
}
}
return progress.value_Renamed;
}
}
return value_Renamed;
}
}
internal sealed class CreationPlaceholder
{
internal System.Object value_Renamed;
}
/// <summary>Expert: Every composite-key in the internal cache is of this type. </summary>
internal class Entry
{
internal System.String field; // which Fieldable
internal int type; // which SortField type
internal System.Object custom; // which custom comparator
internal System.Globalization.CultureInfo locale; // the locale we're sorting (if string)
/// <summary>Creates one of these objects. </summary>
internal Entry(System.String field, int type, System.Globalization.CultureInfo locale)
{
this.field = String.Intern(field);
this.type = type;
this.custom = null;
this.locale = locale;
}
/// <summary>Creates one of these objects for a custom comparator. </summary>
internal Entry(System.String field, System.Object custom)
{
this.field = String.Intern(field);
this.type = SortField.CUSTOM;
this.custom = custom;
this.locale = null;
}
/// <summary>Two of these are equal iff they reference the same field and type. </summary>
public override bool Equals(System.Object o)
{
if (o is Entry)
{
Entry other = (Entry) o;
if ((System.Object) other.field == (System.Object) field && other.type == type)
{
if (other.locale == null ? locale == null : other.locale.Equals(locale))
{
if (other.custom == null)
{
if (custom == null)
return true;
}
else if (other.custom.Equals(custom))
{
return true;
}
}
}
}
return false;
}
/// <summary>Composes a hashcode based on the field and type. </summary>
public override int GetHashCode()
{
return field.GetHashCode() ^ type ^ (custom == null ? 0 : custom.GetHashCode()) ^ (locale == null ? 0 : locale.GetHashCode());
}
}
private static readonly ByteParser BYTE_PARSER;
private static readonly ShortParser SHORT_PARSER;
private static readonly IntParser INT_PARSER;
private static readonly FloatParser FLOAT_PARSER;
// inherit javadocs
public virtual byte[] GetBytes(IndexReader reader, System.String field)
{
return GetBytes(reader, field, BYTE_PARSER);
}
// inherit javadocs
public virtual byte[] GetBytes(IndexReader reader, System.String field, ByteParser parser)
{
return (byte[]) bytesCache.Get(reader, new Entry(field, parser));
}
internal Cache bytesCache;
// inherit javadocs
public virtual short[] GetShorts(IndexReader reader, System.String field)
{
return GetShorts(reader, field, SHORT_PARSER);
}
// inherit javadocs
public virtual short[] GetShorts(IndexReader reader, System.String field, ShortParser parser)
{
return (short[]) shortsCache.Get(reader, new Entry(field, parser));
}
internal Cache shortsCache;
// inherit javadocs
public virtual int[] GetInts(IndexReader reader, System.String field)
{
return GetInts(reader, field, INT_PARSER);
}
// inherit javadocs
public virtual int[] GetInts(IndexReader reader, System.String field, IntParser parser)
{
return (int[]) intsCache.Get(reader, new Entry(field, parser));
}
internal Cache intsCache;
// inherit javadocs
public virtual float[] GetFloats(IndexReader reader, System.String field)
{
return GetFloats(reader, field, FLOAT_PARSER);
}
// inherit javadocs
public virtual float[] GetFloats(IndexReader reader, System.String field, FloatParser parser)
{
return (float[]) floatsCache.Get(reader, new Entry(field, parser));
}
internal Cache floatsCache;
// inherit javadocs
public virtual System.String[] GetStrings(IndexReader reader, System.String field)
{
return (System.String[]) stringsCache.Get(reader, field);
}
internal Cache stringsCache;
// inherit javadocs
public virtual StringIndex GetStringIndex(IndexReader reader, System.String field)
{
return (StringIndex) stringsIndexCache.Get(reader, field);
}
internal Cache stringsIndexCache;
/// <summary>The pattern used to detect integer values in a field </summary>
/// <summary>removed for java 1.3 compatibility
/// protected static final Pattern pIntegers = Pattern.compile ("[0-9\\-]+");
///
/// </summary>
/// <summary>The pattern used to detect float values in a field </summary>
/// <summary> removed for java 1.3 compatibility
/// protected static final Object pFloats = Pattern.compile ("[0-9+\\-\\.eEfFdD]+");
/// </summary>
// inherit javadocs
public virtual System.Object GetAuto(IndexReader reader, System.String field)
{
return autoCache.Get(reader, field);
}
internal Cache autoCache;
// inherit javadocs
public virtual System.IComparable[] GetCustom(IndexReader reader, System.String field, SortComparator comparator)
{
return (System.IComparable[]) customCache.Get(reader, new Entry(field, comparator));
}
internal Cache customCache;
static FieldCacheImpl()
{
BYTE_PARSER = new AnonymousClassByteParser();
SHORT_PARSER = new AnonymousClassShortParser();
INT_PARSER = new AnonymousClassIntParser();
FLOAT_PARSER = new AnonymousClassFloatParser();
}
}
}