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68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
// Matt Wells, copyright Jul 2001
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// . get the number of records (termId/docId/score tuple) in an IndexList(s)
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// for a given termId(s)
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// . if it's truncated then interpolate based on score
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// . used for query routing
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// . used for query term weighting (IDF)
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// . used to set m_termFreq for each termId in query in the Query class
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#ifndef _MSG37_H_
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#define _MSG37_H_
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#include "Msg36.h"
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#include "Query.h" // MAX_QUERY_TERMS
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#define MAX_MSG36_OUT 20
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class Msg37 {
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public:
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// . returns false if blocked, true otherwise
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// . sets errno on error
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// . "termIds/termFreqs" should NOT be on the stack in case we block
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bool getTermFreqs ( char *coll ,
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long maxAge ,
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long long *termIds ,
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long numTermIds ,
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long long *termFreqs ,
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void *state ,
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void (* callback)(void *state ) ,
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long niceness , // = MAX_NICENESS
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bool exactCount );
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bool launchRequests ( ) ;
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// leave public so C wrapper can call
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bool gotTermFreq ( Msg36 *msg36 ) ;
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// we can get up to MAX_QUERY_TERMS term frequencies at the same time
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Msg36 m_msg36 [ MAX_MSG36_OUT ]; // [ MAX_QUERY_TERMS ];
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char m_inUse [ MAX_MSG36_OUT ];
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long m_i;
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// . ptr to "termFreqs" passed in by getTermFreqs[]
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// . we remember it so we can set them
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long long *m_termFreqs;
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long m_numTerms;
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long m_numReplies ;
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long m_numRequests ;
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long m_errno;
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void *m_state ;
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void ( * m_callback ) ( void *state );
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long m_niceness;
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bool m_exactCount;
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char *m_coll;
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long m_maxAge;
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long long *m_termIds ;
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};
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#endif
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