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1530 lines (1316 loc) · 44.5 KB
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/*
* $Id$
*
* Java version of Sphinx searchd client (Java API)
*
* Copyright (c) 2007, Vladimir Fedorkov
* Copyright (c) 2007-2014, Andrew Aksyonoff
* Copyright (c) 2008-2014, Sphinx Technologies Inc
* All rights reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License. You should have
* received a copy of the GPL license along with this program; if you
* did not, you can find it at http://www.gnu.org/
*/
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// WARNING
// We strongly recommend you to use SphinxQL instead of the API
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
package org.sphx.api;
import java.io.*;
import java.net.*;
import java.util.*;
import java.net.SocketAddress.*;
/** Sphinx client class */
public class SphinxClient
{
/* matching modes */
public final static int SPH_MATCH_ALL = 0;
public final static int SPH_MATCH_ANY = 1;
public final static int SPH_MATCH_PHRASE = 2;
public final static int SPH_MATCH_BOOLEAN = 3;
public final static int SPH_MATCH_EXTENDED = 4;
public final static int SPH_MATCH_FULLSCAN = 5;
public final static int SPH_MATCH_EXTENDED2 = 6;
/* ranking modes (extended2 only) */
public final static int SPH_RANK_PROXIMITY_BM25 = 0;
public final static int SPH_RANK_BM25 = 1;
public final static int SPH_RANK_NONE = 2;
public final static int SPH_RANK_WORDCOUNT = 3;
public final static int SPH_RANK_PROXIMITY = 4;
public final static int SPH_RANK_MATCHANY = 5;
public final static int SPH_RANK_FIELDMASK = 6;
public final static int SPH_RANK_SPH04 = 7;
public final static int SPH_RANK_EXPR = 8;
public final static int SPH_RANK_TOTAL = 9;
/* sorting modes */
public final static int SPH_SORT_RELEVANCE = 0;
public final static int SPH_SORT_ATTR_DESC = 1;
public final static int SPH_SORT_ATTR_ASC = 2;
public final static int SPH_SORT_TIME_SEGMENTS = 3;
public final static int SPH_SORT_EXTENDED = 4;
public final static int SPH_SORT_EXPR = 5;
/* grouping functions */
public final static int SPH_GROUPBY_DAY = 0;
public final static int SPH_GROUPBY_WEEK = 1;
public final static int SPH_GROUPBY_MONTH = 2;
public final static int SPH_GROUPBY_YEAR = 3;
public final static int SPH_GROUPBY_ATTR = 4;
public final static int SPH_GROUPBY_ATTRPAIR = 5;
/* searchd reply status codes */
public final static int SEARCHD_OK = 0;
public final static int SEARCHD_ERROR = 1;
public final static int SEARCHD_RETRY = 2;
public final static int SEARCHD_WARNING = 3;
/* attribute types */
public final static int SPH_ATTR_INTEGER = 1;
public final static int SPH_ATTR_TIMESTAMP = 2;
public final static int SPH_ATTR_ORDINAL = 3;
public final static int SPH_ATTR_BOOL = 4;
public final static int SPH_ATTR_FLOAT = 5;
public final static int SPH_ATTR_BIGINT = 6;
public final static int SPH_ATTR_STRING = 7;
public final static int SPH_ATTR_MULTI = 0x40000001;
public final static int SPH_ATTR_MULTI64 = 0x40000002;
/* searchd commands */
private final static int SEARCHD_COMMAND_SEARCH = 0;
private final static int SEARCHD_COMMAND_EXCERPT = 1;
private final static int SEARCHD_COMMAND_UPDATE = 2;
private final static int SEARCHD_COMMAND_KEYWORDS = 3;
private final static int SEARCHD_COMMAND_PERSIST = 4;
private final static int SEARCHD_COMMAND_FLUSHATTRS = 7;
/* searchd command versions */
private final static int VER_MAJOR_PROTO = 0x1;
private final static int VER_COMMAND_SEARCH = 0x119;
private final static int VER_COMMAND_EXCERPT = 0x102;
private final static int VER_COMMAND_UPDATE = 0x103;
private final static int VER_COMMAND_KEYWORDS = 0x100;
private final static int VER_COMMAND_FLUSHATTRS = 0x100;
/* filter types */
private final static int SPH_FILTER_VALUES = 0;
private final static int SPH_FILTER_RANGE = 1;
private final static int SPH_FILTER_FLOATRANGE = 2;
private String _host;
private int _port;
private String _path;
private Socket _socket;
private int _offset;
private int _limit;
private int _mode;
private int[] _weights;
private int _sort;
private String _sortby;
private int _minId;
private int _maxId;
private ByteArrayOutputStream _rawFilters;
private DataOutputStream _filters;
private int _filterCount;
private String _groupBy;
private int _groupFunc;
private String _groupSort;
private String _groupDistinct;
private int _maxMatches;
private int _cutoff;
private int _retrycount;
private int _retrydelay;
private String _latitudeAttr;
private String _longitudeAttr;
private float _latitude;
private float _longitude;
private String _error;
private String _warning;
private boolean _connerror;
private int _timeout;
private ArrayList _reqs;
private Map _indexWeights;
private int _ranker;
private String _rankexpr;
private int _maxQueryTime;
private Map _fieldWeights;
private Map _overrideTypes;
private Map _overrideValues;
private String _select;
/** Creates a new SphinxClient instance. */
public SphinxClient()
{
this("localhost", 9312);
}
/** Creates a new SphinxClient instance, with host:port specification. */
public SphinxClient(String host, int port)
{
_host = host;
_port = port;
_path = null;
_socket = null;
_offset = 0;
_limit = 20;
_mode = SPH_MATCH_EXTENDED2;
_sort = SPH_SORT_RELEVANCE;
_sortby = "";
_minId = 0;
_maxId = 0;
_filterCount = 0;
_rawFilters = new ByteArrayOutputStream();
_filters = new DataOutputStream(_rawFilters);
_groupBy = "";
_groupFunc = SPH_GROUPBY_DAY;
_groupSort = "@group desc";
_groupDistinct = "";
_maxMatches = 1000;
_cutoff = 0;
_retrycount = 0;
_retrydelay = 0;
_latitudeAttr = null;
_longitudeAttr = null;
_latitude = 0;
_longitude = 0;
_error = "";
_warning = "";
_connerror = false;
_timeout = 1000;
_reqs = new ArrayList();
_weights = null;
_indexWeights = new LinkedHashMap();
_fieldWeights = new LinkedHashMap();
_ranker = SPH_RANK_PROXIMITY_BM25;
_rankexpr = "";
_overrideTypes = new LinkedHashMap();
_overrideValues = new LinkedHashMap();
_select = "*";
}
/** Get last error message, if any. */
public String GetLastError()
{
return _error;
}
/** Get last warning message, if any. */
public String GetLastWarning()
{
return _warning;
}
/** Get last error flag (to tell network connection errors from searchd errors or broken responses). */
public boolean IsConnectError()
{
return _connerror;
}
/** Set searchd host and port to connect to. */
public void SetServer(String host, int port) throws SphinxException
{
myAssert ( host!=null && host.length()>0, "host name must not be empty" );
myAssert ( port>0 && port<65536, "port must be in 1..65535 range" );
_host = host;
_port = port;
}
/** Set server connection timeout (0 to remove), in milliseconds. */
public void SetConnectTimeout ( int timeout )
{
_timeout = Math.max ( timeout, 0 );
}
/** Internal method. Sanity check. */
private void myAssert ( boolean condition, String err ) throws SphinxException
{
if ( !condition )
{
_error = err;
throw new SphinxException ( err );
}
}
/** Internal method. String IO helper. */
private static void writeNetUTF8 ( DataOutputStream ostream, String str ) throws IOException
{
if ( str==null )
{
ostream.writeInt ( 0 );
return;
}
byte[] sBytes = str.getBytes ( "UTF-8" );
int iLen = sBytes.length;
ostream.writeInt ( iLen );
ostream.write ( sBytes );
}
/** Internal method. String IO helper. */
private static String readNetUTF8(DataInputStream istream) throws IOException
{
int iLen = istream.readInt();
byte[] sBytes = new byte [ iLen ];
istream.readFully ( sBytes );
return new String ( sBytes, "UTF-8");
}
/** Internal method. Unsigned int IO helper. */
private static long readDword ( DataInputStream istream ) throws IOException
{
long v = (long) istream.readInt ();
if ( v<0 )
v += 4294967296L;
return v;
}
/** Internal method. Connect to searchd and exchange versions. */
private Socket _Connect()
{
if ( _socket!=null )
return _socket;
_connerror = false;
Socket sock = null;
try
{
sock = new Socket ();
sock.setSoTimeout ( _timeout );
InetSocketAddress addr = new InetSocketAddress ( _host, _port );
sock.connect ( addr, _timeout );
DataInputStream sIn = new DataInputStream ( sock.getInputStream() );
int version = sIn.readInt();
if ( version<1 )
{
sock.close ();
_error = "expected searchd protocol version 1+, got version " + version;
return null;
}
DataOutputStream sOut = new DataOutputStream ( sock.getOutputStream() );
sOut.writeInt ( VER_MAJOR_PROTO );
} catch ( IOException e )
{
_error = "connection to " + _host + ":" + _port + " failed: " + e;
_connerror = true;
try
{
if ( sock!=null )
sock.close ();
} catch ( IOException e1 ) {}
return null;
}
return sock;
}
/** Internal method. Get and check response packet from searchd. */
private byte[] _GetResponse ( Socket sock )
{
/* connect */
DataInputStream sIn = null;
InputStream SockInput = null;
try
{
SockInput = sock.getInputStream();
sIn = new DataInputStream ( SockInput );
} catch ( IOException e )
{
_error = "getInputStream() failed: " + e;
return null;
}
/* read response */
byte[] response = null;
short status = 0, ver = 0;
int len = 0;
try
{
/* read status fields */
status = sIn.readShort();
ver = sIn.readShort();
len = sIn.readInt();
/* read response if non-empty */
if ( len<=0 )
{
_error = "invalid response packet size (len=" + len + ")";
return null;
}
response = new byte[len];
sIn.readFully ( response, 0, len );
/* check status */
if ( status==SEARCHD_WARNING )
{
DataInputStream in = new DataInputStream ( new ByteArrayInputStream ( response ) );
int iWarnLen = in.readInt ();
_warning = new String ( response, 4, iWarnLen );
System.arraycopy ( response, 4+iWarnLen, response, 0, response.length-4-iWarnLen );
} else if ( status==SEARCHD_ERROR )
{
_error = "searchd error: " + new String ( response, 4, response.length-4 );
return null;
} else if ( status==SEARCHD_RETRY )
{
_error = "temporary searchd error: " + new String ( response, 4, response.length-4 );
return null;
} else if ( status!=SEARCHD_OK )
{
_error = "searched returned unknown status, code=" + status;
return null;
}
} catch ( IOException e )
{
if ( len!=0 )
{
/* get trace, to provide even more failure details */
PrintWriter ew = new PrintWriter ( new StringWriter() );
e.printStackTrace ( ew );
ew.flush ();
ew.close ();
String sTrace = ew.toString ();
/* build error message */
_error = "failed to read searchd response (status=" + status + ", ver=" + ver + ", len=" + len + ", trace=" + sTrace +")";
} else
{
_error = "received zero-sized searchd response (searchd crashed?): " + e.getMessage();
}
return null;
} finally
{
if ( _socket==null )
{
try
{
if ( sIn!=null )
sIn.close();
if ( sock!=null && !sock.isConnected() )
sock.close();
} catch ( IOException e )
{
/* silently ignore close failures; nothing could be done anyway */
}
}
}
return response;
}
/** Internal method. Connect to searchd, send request, get response as DataInputStream. */
private DataInputStream _DoRequest ( int command, int version, ByteArrayOutputStream req )
{
/* connect */
Socket sock = _Connect();
if ( sock==null )
return null;
/* send request */
byte[] reqBytes = req.toByteArray();
try
{
DataOutputStream sockDS = new DataOutputStream ( sock.getOutputStream() );
sockDS.writeShort ( command );
sockDS.writeShort ( version );
sockDS.writeInt ( reqBytes.length );
sockDS.write ( reqBytes );
} catch ( Exception e )
{
_error = "network error: " + e;
_connerror = true;
return null;
}
/* get response */
byte[] response = _GetResponse ( sock );
if ( response==null )
return null;
/* spawn that tampon */
return new DataInputStream ( new ByteArrayInputStream ( response ) );
}
/** Set matches offset and limit to return to client, max matches to retrieve on server, and cutoff. */
public void SetLimits ( int offset, int limit, int max, int cutoff ) throws SphinxException
{
myAssert ( offset>=0, "offset must not be negative" );
myAssert ( limit>0, "limit must be positive" );
myAssert ( max>0, "max must be positive" );
myAssert ( cutoff>=0, "cutoff must not be negative" );
_offset = offset;
_limit = limit;
_maxMatches = max;
_cutoff = cutoff;
}
/** Set matches offset and limit to return to client, and max matches to retrieve on server. */
public void SetLimits ( int offset, int limit, int max ) throws SphinxException
{
SetLimits ( offset, limit, max, _cutoff );
}
/** Set matches offset and limit to return to client. */
public void SetLimits ( int offset, int limit) throws SphinxException
{
SetLimits ( offset, limit, _maxMatches, _cutoff );
}
/** Set maximum query time, in milliseconds, per-index, 0 means "do not limit". */
public void SetMaxQueryTime ( int maxTime ) throws SphinxException
{
myAssert ( maxTime>=0, "max_query_time must not be negative" );
_maxQueryTime = maxTime;
}
/** Set matching mode. DEPRECATED */
public void SetMatchMode(int mode) throws SphinxException
{
System.out.println ( "DEPRECATED: Do not call this method or, even better, use SphinxQL instead of an API\n" );
myAssert (
mode==SPH_MATCH_ALL ||
mode==SPH_MATCH_ANY ||
mode==SPH_MATCH_PHRASE ||
mode==SPH_MATCH_BOOLEAN ||
mode==SPH_MATCH_EXTENDED ||
mode==SPH_MATCH_FULLSCAN ||
mode==SPH_MATCH_EXTENDED2, "unknown mode value; use one of the SPH_MATCH_xxx constants" );
_mode = mode;
}
/** Set ranking mode. */
public void SetRankingMode ( int ranker, String rankexpr ) throws SphinxException
{
myAssert ( ranker>=0 && ranker<SPH_RANK_TOTAL, "unknown ranker value; use one of the SPH_RANK_xxx constants" );
_rankexpr = ( rankexpr==null ) ? "" : rankexpr;
_ranker = ranker;
}
/** Set sorting mode. */
public void SetSortMode ( int mode, String sortby ) throws SphinxException
{
myAssert (
mode==SPH_SORT_RELEVANCE ||
mode==SPH_SORT_ATTR_DESC ||
mode==SPH_SORT_ATTR_ASC ||
mode==SPH_SORT_TIME_SEGMENTS ||
mode==SPH_SORT_EXTENDED ||
mode==SPH_SORT_EXPR, "unknown mode value; use one of the available SPH_SORT_xxx constants" );
myAssert ( mode==SPH_SORT_RELEVANCE || ( sortby!=null && sortby.length()>0 ), "sortby string must not be empty in selected mode" );
_sort = mode;
_sortby = ( sortby==null ) ? "" : sortby;
}
/** Set per-field weights (all values must be positive). WARNING: DEPRECATED, use SetFieldWeights() instead. */
public void SetWeights(int[] weights) throws SphinxException
{
myAssert ( weights!=null, "weights must not be null" );
for (int i = 0; i < weights.length; i++) {
int weight = weights[i];
myAssert ( weight>0, "all weights must be greater than 0" );
}
_weights = weights;
}
/**
* Bind per-field weights by field name.
* @param fieldWeights hash which maps String index names to Integer weights
*/
public void SetFieldWeights ( Map fieldWeights ) throws SphinxException
{
/* FIXME! implement checks here */
_fieldWeights = ( fieldWeights==null ) ? new LinkedHashMap () : fieldWeights;
}
/**
* Bind per-index weights by index name (and enable summing the weights on duplicate matches, instead of replacing them).
* @param indexWeights hash which maps String index names to Integer weights
*/
public void SetIndexWeights ( Map indexWeights ) throws SphinxException
{
/* FIXME! implement checks here */
_indexWeights = ( indexWeights==null ) ? new LinkedHashMap () : indexWeights;
}
/** Set document IDs range to match. */
public void SetIDRange ( int min, int max ) throws SphinxException
{
myAssert ( min<=max, "min must be less or equal to max" );
_minId = min;
_maxId = max;
}
/** Set values filter. Only match records where attribute value is in given set. */
public void SetFilter ( String attribute, int[] values, boolean exclude ) throws SphinxException
{
myAssert ( values!=null && values.length>0, "values array must not be null or empty" );
myAssert ( attribute!=null && attribute.length()>0, "attribute name must not be null or empty" );
try
{
writeNetUTF8 ( _filters, attribute );
_filters.writeInt ( SPH_FILTER_VALUES );
_filters.writeInt ( values.length );
for ( int i=0; i<values.length; i++ )
_filters.writeLong ( values[i] );
_filters.writeInt ( exclude ? 1 : 0 );
} catch ( Exception e )
{
myAssert ( false, "IOException: " + e.getMessage() );
}
_filterCount++;
}
/** Set values filter. Only match records where attribute value is in given set. */
public void SetFilter ( String attribute, long[] values, boolean exclude ) throws SphinxException
{
myAssert ( values!=null && values.length>0, "values array must not be null or empty" );
myAssert ( attribute!=null && attribute.length()>0, "attribute name must not be null or empty" );
try
{
writeNetUTF8 ( _filters, attribute );
_filters.writeInt ( SPH_FILTER_VALUES );
_filters.writeInt ( values.length );
for ( int i=0; i<values.length; i++ )
_filters.writeLong ( values[i] );
_filters.writeInt ( exclude ? 1 : 0 );
} catch ( Exception e )
{
myAssert ( false, "IOException: " + e.getMessage() );
}
_filterCount++;
}
/** Set values filter with a single value (syntax sugar; see {@link #SetFilter(String,int[],boolean)}). */
public void SetFilter ( String attribute, int value, boolean exclude ) throws SphinxException
{
long[] values = new long[] { value };
SetFilter ( attribute, values, exclude );
}
/** Set values filter with a single value (syntax sugar; see {@link #SetFilter(String,int[],boolean)}). */
public void SetFilter ( String attribute, long value, boolean exclude ) throws SphinxException
{
long[] values = new long[] { value };
SetFilter ( attribute, values, exclude );
}
/** Set integer range filter. Only match records if attribute value is beetwen min and max (inclusive). */
public void SetFilterRange ( String attribute, long min, long max, boolean exclude ) throws SphinxException
{
myAssert ( min<=max, "min must be less or equal to max" );
try
{
writeNetUTF8 ( _filters, attribute );
_filters.writeInt ( SPH_FILTER_RANGE );
_filters.writeLong ( min );
_filters.writeLong ( max );
_filters.writeInt ( exclude ? 1 : 0 );
} catch ( Exception e )
{
myAssert ( false, "IOException: " + e.getMessage() );
}
_filterCount++;
}
/** Set integer range filter. Only match records if attribute value is beetwen min and max (inclusive). */
public void SetFilterRange ( String attribute, int min, int max, boolean exclude ) throws SphinxException
{
SetFilterRange ( attribute, (long)min, (long)max, exclude );
}
/** Set float range filter. Only match records if attribute value is beetwen min and max (inclusive). */
public void SetFilterFloatRange ( String attribute, float min, float max, boolean exclude ) throws SphinxException
{
myAssert ( min<=max, "min must be less or equal to max" );
try
{
writeNetUTF8 ( _filters, attribute );
_filters.writeInt ( SPH_FILTER_FLOATRANGE );
_filters.writeFloat ( min );
_filters.writeFloat ( max );
_filters.writeInt ( exclude ? 1 : 0 );
} catch ( Exception e )
{
myAssert ( false, "IOException: " + e.getMessage() );
}
_filterCount++;
}
/** Setup geographical anchor point. Required to use @geodist in filters and sorting; distance will be computed to this point. */
public void SetGeoAnchor ( String latitudeAttr, String longitudeAttr, float latitude, float longitude ) throws SphinxException
{
myAssert ( latitudeAttr!=null && latitudeAttr.length()>0, "longitudeAttr string must not be null or empty" );
myAssert ( longitudeAttr!=null && longitudeAttr.length()>0, "longitudeAttr string must not be null or empty" );
_latitudeAttr = latitudeAttr;
_longitudeAttr = longitudeAttr;
_latitude = latitude;
_longitude = longitude;
}
/** Set grouping attribute and function. */
public void SetGroupBy ( String attribute, int func, String groupsort ) throws SphinxException
{
myAssert (
func==SPH_GROUPBY_DAY ||
func==SPH_GROUPBY_WEEK ||
func==SPH_GROUPBY_MONTH ||
func==SPH_GROUPBY_YEAR ||
func==SPH_GROUPBY_ATTR ||
func==SPH_GROUPBY_ATTRPAIR, "unknown func value; use one of the available SPH_GROUPBY_xxx constants" );
_groupBy = attribute;
_groupFunc = func;
_groupSort = groupsort;
}
/** Set grouping attribute and function with default ("@group desc") groupsort (syntax sugar). */
public void SetGroupBy(String attribute, int func) throws SphinxException
{
SetGroupBy(attribute, func, "@group desc");
}
/** Set count-distinct attribute for group-by queries. */
public void SetGroupDistinct(String attribute)
{
_groupDistinct = attribute;
}
/** Set distributed retries count and delay. */
public void SetRetries ( int count, int delay ) throws SphinxException
{
myAssert ( count>=0, "count must not be negative" );
myAssert ( delay>=0, "delay must not be negative" );
_retrycount = count;
_retrydelay = delay;
}
/** Set distributed retries count with default (zero) delay (syntax sugar). */
public void SetRetries ( int count ) throws SphinxException
{
SetRetries ( count, 0 );
}
/**
* DEPRECATED: Set attribute values override (one override list per attribute).
* @param values maps Long document IDs to Int/Long/Float values (as specified in attrtype).
*/
public void SetOverride ( String attrname, int attrtype, Map values ) throws SphinxException
{
System.out.println ( "DEPRECATED: Do not call this method. Use SphinxQL REMAP() function instead.\n" );
myAssert ( attrname!=null && attrname.length()>0, "attrname must not be empty" );
myAssert ( attrtype==SPH_ATTR_INTEGER || attrtype==SPH_ATTR_TIMESTAMP || attrtype==SPH_ATTR_BOOL || attrtype==SPH_ATTR_FLOAT || attrtype==SPH_ATTR_BIGINT,
"unsupported attrtype (must be one of INTEGER, TIMESTAMP, BOOL, FLOAT, or BIGINT)" );
_overrideTypes.put ( attrname, new Integer ( attrtype ) );
_overrideValues.put ( attrname, values );
}
/** Set select-list (attributes or expressions), SQL-like syntax. */
public void SetSelect ( String select ) throws SphinxException
{
myAssert ( select!=null, "select clause string must not be null" );
_select = select;
}
/** Reset all currently set filters (for multi-queries). */
public void ResetFilters()
{
/* should we close them first? */
_rawFilters = new ByteArrayOutputStream();
_filters = new DataOutputStream(_rawFilters);
_filterCount = 0;
/* reset GEO anchor */
_latitudeAttr = null;
_longitudeAttr = null;
_latitude = 0;
_longitude = 0;
}
/** Clear groupby settings (for multi-queries). */
public void ResetGroupBy ()
{
_groupBy = "";
_groupFunc = SPH_GROUPBY_DAY;
_groupSort = "@group desc";
_groupDistinct = "";
}
/** Clear all attribute value overrides (for multi-queries). */
public void ResetOverrides ()
{
_overrideTypes.clear ();
_overrideValues.clear ();
}
/** Connect to searchd server and run current search query against all indexes (syntax sugar). */
public SphinxResult Query ( String query ) throws SphinxException
{
return Query ( query, "*", "" );
}
/** Connect to searchd server and run current search query against all indexes (syntax sugar). */
public SphinxResult Query ( String query, String index ) throws SphinxException
{
return Query ( query, index, "" );
}
/** Connect to searchd server and run current search query. */
public SphinxResult Query ( String query, String index, String comment ) throws SphinxException
{
myAssert ( _reqs==null || _reqs.size()==0, "AddQuery() and Query() can not be combined; use RunQueries() instead" );
AddQuery ( query, index, comment );
SphinxResult[] results = RunQueries();
_reqs = new ArrayList(); /* just in case it failed too early */
if ( results==null || results.length<1 )
return null; /* probably network error; error message should be already filled */
SphinxResult res = results[0];
_warning = res.warning;
_error = res.error;
if ( res==null || res.getStatus()==SEARCHD_ERROR )
return null;
return res;
}
/** Add new query with current settings to current search request. */
public int AddQuery ( String query, String index, String comment ) throws SphinxException
{
ByteArrayOutputStream req = new ByteArrayOutputStream();
/* build request */
try {
DataOutputStream out = new DataOutputStream(req);
out.writeInt(_offset);
out.writeInt(_limit);
out.writeInt(_mode);
out.writeInt(_ranker);
if ( _ranker == SPH_RANK_EXPR ) {
writeNetUTF8(out, _rankexpr);
}
out.writeInt(_sort);
writeNetUTF8(out, _sortby);
writeNetUTF8(out, query);
int weightLen = _weights != null ? _weights.length : 0;
out.writeInt(weightLen);
if (_weights != null) {
for (int i = 0; i < _weights.length; i++)
out.writeInt(_weights[i]);
}
writeNetUTF8(out, index);
out.writeInt(0);
out.writeInt(_minId);
out.writeInt(_maxId);
/* filters */
out.writeInt(_filterCount);
out.write(_rawFilters.toByteArray());
/* group-by, max matches, sort-by-group flag */
out.writeInt(_groupFunc);
writeNetUTF8(out, _groupBy);
out.writeInt(_maxMatches);
writeNetUTF8(out, _groupSort);
out.writeInt(_cutoff);
out.writeInt(_retrycount);
out.writeInt(_retrydelay);
writeNetUTF8(out, _groupDistinct);
/* anchor point */
if (_latitudeAttr == null || _latitudeAttr.length() == 0 || _longitudeAttr == null || _longitudeAttr.length() == 0) {
out.writeInt(0);
} else {
out.writeInt(1);
writeNetUTF8(out, _latitudeAttr);
writeNetUTF8(out, _longitudeAttr);
out.writeFloat(_latitude);
out.writeFloat(_longitude);
}
/* per-index weights */
out.writeInt(_indexWeights.size());
for (Iterator e = _indexWeights.keySet().iterator(); e.hasNext();) {
String indexName = (String) e.next();
Integer weight = (Integer) _indexWeights.get(indexName);
writeNetUTF8(out, indexName);
out.writeInt(weight.intValue());
}
/* max query time */
out.writeInt ( _maxQueryTime );
/* per-field weights */
out.writeInt ( _fieldWeights.size() );
for ( Iterator e=_fieldWeights.keySet().iterator(); e.hasNext(); )
{
String field = (String) e.next();
Integer weight = (Integer) _fieldWeights.get ( field );
writeNetUTF8 ( out, field );
out.writeInt ( weight.intValue() );
}
/* comment */
writeNetUTF8 ( out, comment );
/* overrides */
out.writeInt ( _overrideTypes.size() );
for ( Iterator e=_overrideTypes.keySet().iterator(); e.hasNext(); )
{
String attr = (String) e.next();
Integer type = (Integer) _overrideTypes.get ( attr );
Map values = (Map) _overrideValues.get ( attr );
writeNetUTF8 ( out, attr );
out.writeInt ( type.intValue() );
out.writeInt ( values.size() );
for ( Iterator e2=values.keySet().iterator(); e2.hasNext(); )
{
Long id = (Long) e2.next ();
out.writeLong ( id.longValue() );
switch ( type.intValue() )
{
case SPH_ATTR_FLOAT: out.writeFloat ( ( (Float) values.get ( id ) ).floatValue() ); break;
case SPH_ATTR_BIGINT: out.writeLong ( ( (Long)values.get ( id ) ).longValue() ); break;
default: out.writeInt ( ( (Integer)values.get ( id ) ).intValue() ); break;
}
}
}
/* select-list */
writeNetUTF8 ( out, _select );
/* done! */
out.flush ();
int qIndex = _reqs.size();
_reqs.add ( qIndex, req.toByteArray() );
return qIndex;
} catch ( Exception e )
{
myAssert ( false, "error in AddQuery(): " + e + ": " + e.getMessage() );
} finally
{
try
{
_filters.close ();
_rawFilters.close ();
} catch ( IOException e )
{
myAssert ( false, "error in AddQuery(): " + e + ": " + e.getMessage() );
}
}
return -1;
}
/** Run all previously added search queries. */
public SphinxResult[] RunQueries() throws SphinxException
{
if ( _reqs==null || _reqs.size()<1 )
{
_error = "no queries defined, issue AddQuery() first";
return null;
}
/* build the mega-request */
int nreqs = _reqs.size();
ByteArrayOutputStream reqBuf = new ByteArrayOutputStream();
try
{
DataOutputStream req = new DataOutputStream ( reqBuf );
/* its a client */
req.writeInt(0);
req.writeInt ( nreqs );
for ( int i=0; i<nreqs; i++ )
req.write ( (byte[]) _reqs.get(i) );
req.flush ();
} catch ( Exception e )
{
_error = "internal error: failed to build request: " + e;
return null;
}
DataInputStream in =_DoRequest ( SEARCHD_COMMAND_SEARCH, VER_COMMAND_SEARCH, reqBuf );
if ( in==null )
return null;
SphinxResult[] results = new SphinxResult [ nreqs ];
_reqs = new ArrayList();
try
{
for ( int ires=0; ires<nreqs; ires++ )
{
SphinxResult res = new SphinxResult();
results[ires] = res;
int status = in.readInt();
res.setStatus ( status );