From: Adam Dickmeiss Date: Fri, 18 Jul 2003 13:27:20 +0000 (+0000) Subject: Record cache. syntax used for matching. Compspec is not (yet) X-Git-Tag: YAZPP.0.6~9 X-Git-Url: http://lists.indexdata.dk/?a=commitdiff_plain;h=be8de1a2cca3c7162563ddfe524ad4e389758150;p=yazpp-moved-to-github.git Record cache. syntax used for matching. Compspec is not (yet) --- diff --git a/include/yaz++/proxy.h b/include/yaz++/proxy.h index 2af7c0f..dcc71f8 100644 --- a/include/yaz++/proxy.h +++ b/include/yaz++/proxy.h @@ -1,8 +1,8 @@ /* - * Copyright (c) 1998-2000, Index Data. + * Copyright (c) 1998-2003, Index Data. * See the file LICENSE for details. * - * $Id: proxy.h,v 1.3 2002-11-26 11:13:40 mike Exp $ + * $Id: proxy.h,v 1.4 2003-07-18 13:27:20 adam Exp $ */ #include @@ -11,6 +11,21 @@ class Yaz_Proxy; +class Yaz_RecordCache_Entry; + +class YAZ_EXPORT Yaz_RecordCache { + public: + Yaz_RecordCache (); + ~Yaz_RecordCache (); + void add (ODR o, Z_NamePlusRecordList *npr, int start); + int lookup (ODR o, Z_NamePlusRecordList **npr, int start, int num, + Odr_oid *syntax); + void clear(); + private: + NMEM m_mem; + Yaz_RecordCache_Entry *m_entries; +}; + /// Private class class YAZ_EXPORT Yaz_ProxyClient : public Yaz_Z_Assoc { friend class Yaz_Proxy; @@ -36,8 +51,10 @@ class YAZ_EXPORT Yaz_ProxyClient : public Yaz_Z_Assoc { int m_sr_transform; int m_seqno; int m_waiting; + int m_resultSetStartPoint; ODR m_init_odr; Z_APDU *m_initResponse; + Yaz_RecordCache m_cache; }; /// Information Retrieval Proxy Server. diff --git a/src/Makefile.am b/src/Makefile.am index 1fdf972..ff0b7fb 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -1,4 +1,4 @@ -## $Id: Makefile.am,v 1.13 2002-10-28 12:16:09 adam Exp $ +## $Id: Makefile.am,v 1.14 2003-07-18 13:27:20 adam Exp $ AM_CXXFLAGS = $(YAZINC) -I$(srcdir)/../include @@ -7,9 +7,8 @@ noinst_LTLIBRARIES = libyazcpp.la libyazcpp_la_SOURCES=yaz-socket-manager.cpp yaz-pdu-assoc.cpp \ yaz-z-assoc.cpp yaz-proxy.cpp yaz-z-query.cpp yaz-ir-assoc.cpp \ yaz-z-server.cpp yaz-pdu-assoc-thread.cpp yaz-z-server-sr.cpp \ - yaz-z-server-ill.cpp yaz-z-server-update.cpp yaz-z-databases.cpp - -libyazcpp_la_LDFLAGS=-version-info 0:0:0 + yaz-z-server-ill.cpp yaz-z-server-update.cpp yaz-z-databases.cpp \ + yaz-z-cache.cpp bin_PROGRAMS = yaz-proxy noinst_PROGRAMS = yaz-my-server yaz-my-client diff --git a/src/yaz-proxy.cpp b/src/yaz-proxy.cpp index c0c24d0..401d1c7 100644 --- a/src/yaz-proxy.cpp +++ b/src/yaz-proxy.cpp @@ -2,7 +2,7 @@ * Copyright (c) 1998-2003, Index Data. * See the file LICENSE for details. * - * $Id: yaz-proxy.cpp,v 1.43 2003-06-25 21:57:45 adam Exp $ + * $Id: yaz-proxy.cpp,v 1.44 2003-07-18 13:27:20 adam Exp $ */ #include @@ -145,9 +145,11 @@ Yaz_ProxyClient *Yaz_Proxy::get_client(Z_APDU *apdu) c->m_init_flag = 0; c->m_last_ok = 0; + c->m_cache.clear(); c->m_last_resultCount = 0; c->m_sr_transform = 0; c->m_waiting = 0; + c->m_resultSetStartPoint = 0; c->timeout(m_idletime); } c->m_seqno = parent->m_seqno; @@ -281,8 +283,10 @@ Yaz_ProxyClient *Yaz_Proxy::get_client(Z_APDU *apdu) c->m_init_flag = 0; c->m_last_resultCount = 0; c->m_last_ok = 0; + c->m_cache.clear(); c->m_sr_transform = 0; c->m_waiting = 0; + c->m_resultSetStartPoint = 0; c->timeout(20); (parent->m_seqno)++; @@ -293,10 +297,41 @@ Yaz_ProxyClient *Yaz_Proxy::get_client(Z_APDU *apdu) Z_APDU *Yaz_Proxy::result_set_optimize(Z_APDU *apdu) { - if (apdu->which != Z_APDU_searchRequest) - return apdu; if (*m_parent->m_optimize == '0') return apdu; // don't optimize result sets.. + if (apdu->which == Z_APDU_presentRequest) + { + Z_PresentRequest *pr = apdu->u.presentRequest; + Z_NamePlusRecordList *npr; + int toget = *pr->numberOfRecordsRequested; + int start = *pr->resultSetStartPoint; + + if (!strcmp(m_client->m_last_resultSetId, pr->resultSetId)) + { + if (m_client->m_cache.lookup (odr_encode(), &npr, start, toget, + pr->preferredRecordSyntax)) + { + yaz_log (LOG_LOG, "Returned cache records for present request"); + Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse); + new_apdu->u.presentResponse->referenceId = pr->referenceId; + + new_apdu->u.presentResponse->numberOfRecordsReturned + = odr_intdup(odr_encode(), toget); + + new_apdu->u.presentResponse->records = (Z_Records*) + odr_malloc(odr_encode(), sizeof(Z_Records)); + new_apdu->u.presentResponse->records->which = Z_Records_DBOSD; + new_apdu->u.presentResponse->records->u.databaseOrSurDiagnostics = npr; + new_apdu->u.presentResponse->nextResultSetPosition = + odr_intdup(odr_encode(), start+toget); + send_Z_PDU(new_apdu); + return 0; + } + } + } + + if (apdu->which != Z_APDU_searchRequest) + return apdu; Z_SearchRequest *sr = apdu->u.searchRequest; Yaz_Z_Query *this_query = new Yaz_Z_Query; Yaz_Z_Databases this_databases; @@ -315,27 +350,56 @@ Z_APDU *Yaz_Proxy::result_set_optimize(Z_APDU *apdu) if (m_client->m_last_resultCount > *sr->smallSetUpperBound && m_client->m_last_resultCount < *sr->largeSetLowerBound) { - // medium Set - // send present request (medium size) - yaz_log (LOG_LOG, "Optimizing search for medium set"); - Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest); - Z_PresentRequest *pr = new_apdu->u.presentRequest; - pr->referenceId = sr->referenceId; - pr->resultSetId = sr->resultSetName; - pr->preferredRecordSyntax = sr->preferredRecordSyntax; - if (*sr->mediumSetPresentNumber < m_client->m_last_resultCount) - *pr->numberOfRecordsRequested = *sr->mediumSetPresentNumber; - else - *pr->numberOfRecordsRequested = m_client->m_last_resultCount; - if (sr->mediumSetElementSetNames) + Z_NamePlusRecordList *npr; + int toget = *sr->mediumSetPresentNumber; + + if (toget > m_client->m_last_resultCount) + toget = m_client->m_last_resultCount; + + if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget, + sr->preferredRecordSyntax)) { - pr->recordComposition = (Z_RecordComposition *) - odr_malloc(odr_encode(), sizeof(Z_RecordComposition)); - pr->recordComposition->which = Z_RecordComp_simple; - pr->recordComposition->u.simple = sr->mediumSetElementSetNames; + yaz_log (LOG_LOG, "Returned cache records for medium set"); + Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse); + new_apdu->u.searchResponse->referenceId = sr->referenceId; + new_apdu->u.searchResponse->resultCount = + &m_client->m_last_resultCount; + + new_apdu->u.searchResponse->numberOfRecordsReturned + = odr_intdup(odr_encode(), toget); + + new_apdu->u.searchResponse->records = (Z_Records*) + odr_malloc(odr_encode(), sizeof(Z_Records)); + new_apdu->u.searchResponse->records->which = Z_Records_DBOSD; + new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr; + new_apdu->u.searchResponse->nextResultSetPosition = + odr_intdup(odr_encode(), toget+1); + send_Z_PDU(new_apdu); + return 0; + } + else + { + // medium Set + // send present request (medium size) + yaz_log (LOG_LOG, "Optimizing search for medium set"); + + Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest); + Z_PresentRequest *pr = new_apdu->u.presentRequest; + pr->referenceId = sr->referenceId; + pr->resultSetId = sr->resultSetName; + pr->preferredRecordSyntax = sr->preferredRecordSyntax; + *pr->numberOfRecordsRequested = toget; + if (sr->mediumSetElementSetNames) + { + pr->recordComposition = (Z_RecordComposition *) + odr_malloc(odr_encode(), sizeof(Z_RecordComposition)); + pr->recordComposition->which = Z_RecordComp_simple; + pr->recordComposition->u.simple = + sr->mediumSetElementSetNames; + } + m_client->m_sr_transform = 1; + return new_apdu; } - m_client->m_sr_transform = 1; - return new_apdu; } else if (m_client->m_last_resultCount >= *sr->largeSetLowerBound || m_client->m_last_resultCount <= 0) @@ -351,24 +415,51 @@ Z_APDU *Yaz_Proxy::result_set_optimize(Z_APDU *apdu) } else { + Z_NamePlusRecordList *npr; + int toget = m_client->m_last_resultCount; // small set // send a present request (small set) - yaz_log (LOG_LOG, "Optimizing search for small set"); - Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest); - Z_PresentRequest *pr = new_apdu->u.presentRequest; - pr->referenceId = sr->referenceId; - pr->resultSetId = sr->resultSetName; - pr->preferredRecordSyntax = sr->preferredRecordSyntax; - *pr->numberOfRecordsRequested = m_client->m_last_resultCount; - if (sr->smallSetElementSetNames) + + if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget, + sr->preferredRecordSyntax)) { - pr->recordComposition = (Z_RecordComposition *) - odr_malloc(odr_encode(), sizeof(Z_RecordComposition)); - pr->recordComposition->which = Z_RecordComp_simple; - pr->recordComposition->u.simple = sr->smallSetElementSetNames; + yaz_log (LOG_LOG, "Returned cache records for small set"); + Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse); + new_apdu->u.searchResponse->referenceId = sr->referenceId; + new_apdu->u.searchResponse->resultCount = + &m_client->m_last_resultCount; + + new_apdu->u.searchResponse->numberOfRecordsReturned + = odr_intdup(odr_encode(), toget); + + new_apdu->u.searchResponse->records = (Z_Records*) + odr_malloc(odr_encode(), sizeof(Z_Records)); + new_apdu->u.searchResponse->records->which = Z_Records_DBOSD; + new_apdu->u.searchResponse->records->u.databaseOrSurDiagnostics = npr; + new_apdu->u.searchResponse->nextResultSetPosition = + odr_intdup(odr_encode(), toget+1); + send_Z_PDU(new_apdu); + return 0; + } + else + { + yaz_log (LOG_LOG, "Optimizing search for small set"); + Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest); + Z_PresentRequest *pr = new_apdu->u.presentRequest; + pr->referenceId = sr->referenceId; + pr->resultSetId = sr->resultSetName; + pr->preferredRecordSyntax = sr->preferredRecordSyntax; + *pr->numberOfRecordsRequested = toget; + if (sr->smallSetElementSetNames) + { + pr->recordComposition = (Z_RecordComposition *) + odr_malloc(odr_encode(), sizeof(Z_RecordComposition)); + pr->recordComposition->which = Z_RecordComp_simple; + pr->recordComposition->u.simple = sr->smallSetElementSetNames; + } + m_client->m_sr_transform = 1; + return new_apdu; } - m_client->m_sr_transform = 1; - return new_apdu; } } else @@ -376,6 +467,8 @@ Z_APDU *Yaz_Proxy::result_set_optimize(Z_APDU *apdu) delete m_client->m_last_query; m_client->m_last_query = this_query; m_client->m_last_ok = 0; + m_client->m_cache.clear(); + m_client->m_resultSetStartPoint = 0; xfree (m_client->m_last_resultSetId); m_client->m_last_resultSetId = xstrdup (sr->resultSetName); @@ -463,6 +556,14 @@ void Yaz_Proxy::recv_Z_PDU(Z_APDU *apdu) if (oi) *oi = 0; + if (apdu->which == Z_APDU_presentRequest && + m_client->m_resultSetStartPoint == 0) + { + Z_PresentRequest *pr = apdu->u.presentRequest; + m_client->m_resultSetStartPoint = *pr->resultSetStartPoint; + } else { + m_client->m_resultSetStartPoint = 0; + } if (m_client->send_Z_PDU(apdu) < 0) { delete m_client; @@ -577,6 +678,7 @@ Yaz_ProxyClient::Yaz_ProxyClient(IYaz_PDU_Observable *the_PDU_Observable) : m_waiting = 0; m_init_odr = odr_createmem (ODR_DECODE); m_initResponse = 0; + m_resultSetStartPoint = 0; } const char *Yaz_Proxy::option(const char *name, const char *value) @@ -606,25 +708,42 @@ void Yaz_ProxyClient::recv_Z_PDU(Z_APDU *apdu) } if (apdu->which == Z_APDU_searchResponse) { - m_last_resultCount = *apdu->u.searchResponse->resultCount; - int status = *apdu->u.searchResponse->searchStatus; - if (status && - (!apdu->u.searchResponse->records || - apdu->u.searchResponse->records->which == Z_Records_DBOSD)) + Z_SearchResponse *sr = apdu->u.searchResponse; + m_last_resultCount = *sr->resultCount; + int status = *sr->searchStatus; + if (status && (!sr->records || sr->records->which == Z_Records_DBOSD)) + { m_last_ok = 1; + + if (sr->records && sr->records->which == Z_Records_DBOSD) + { + m_cache.add(odr_decode(), + sr->records->u.databaseOrSurDiagnostics, 1); + } + } } - if (apdu->which == Z_APDU_presentResponse && m_sr_transform) + if (apdu->which == Z_APDU_presentResponse) { - m_sr_transform = 0; Z_PresentResponse *pr = apdu->u.presentResponse; - Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse); - Z_SearchResponse *sr = new_apdu->u.searchResponse; - sr->referenceId = pr->referenceId; - *sr->resultCount = m_last_resultCount; - sr->records = pr->records; - sr->nextResultSetPosition = pr->nextResultSetPosition; - sr->numberOfRecordsReturned = pr->numberOfRecordsReturned; - apdu = new_apdu; + if (m_sr_transform) + { + m_sr_transform = 0; + Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse); + Z_SearchResponse *sr = new_apdu->u.searchResponse; + sr->referenceId = pr->referenceId; + *sr->resultCount = m_last_resultCount; + sr->records = pr->records; + sr->nextResultSetPosition = pr->nextResultSetPosition; + sr->numberOfRecordsReturned = pr->numberOfRecordsReturned; + apdu = new_apdu; + } + if (pr->records->which == Z_Records_DBOSD && m_resultSetStartPoint) + { + m_cache.add(odr_decode(), + pr->records->u.databaseOrSurDiagnostics, + m_resultSetStartPoint); + m_resultSetStartPoint = 0; + } } if (m_cookie && *m_cookie) set_otherInformationString (apdu, VAL_COOKIE, 1, m_cookie); diff --git a/src/yaz-z-cache.cpp b/src/yaz-z-cache.cpp new file mode 100644 index 0000000..125fdb5 --- /dev/null +++ b/src/yaz-z-cache.cpp @@ -0,0 +1,110 @@ +/* + * Copyright (c) 1998-2003, Index Data. + * See the file LICENSE for details. + * + * $Id: yaz-z-cache.cpp,v 1.1 2003-07-18 13:27:20 adam Exp $ + */ + +#include +#include + +struct Yaz_RecordCache_Entry { + int m_offset; + Z_NamePlusRecord *m_record; + Yaz_RecordCache_Entry *m_next; +}; + + +Yaz_RecordCache::Yaz_RecordCache () +{ + m_mem = nmem_create(); + m_entries = 0; +} + +Yaz_RecordCache::~Yaz_RecordCache () +{ + nmem_destroy(m_mem); +} + +void Yaz_RecordCache::clear () +{ + nmem_destroy(m_mem); + m_mem = nmem_create(); + m_entries = 0; +} + +#if 0 +void Yaz_RecordCache::prepare_present(Z_RecordComposition *comp) +{ + if (!comp) + m_recordComposition = 0; + else + { + m_recordComposition = nmem_malloc(m_mem, sizeof(*m_recordComposition)); + m_recordComposition->which = comp->which; + if (comp->which == Z_RecordComp_simple) + { + m_recordComposition->u.simple = (Z_ElementSetNames *) + nmem_malloc(m_mem, sizeof(Z_ElementSetNames)); + } + } + +} +#endif + +void Yaz_RecordCache::add (ODR o, Z_NamePlusRecordList *npr, int start) +{ + NMEM tmp_mem = odr_extract_mem(o); + nmem_transfer(m_mem, tmp_mem); + nmem_destroy(tmp_mem); + + int i; + for (i = 0; inum_records; i++) + { + Yaz_RecordCache_Entry *entry = (Yaz_RecordCache_Entry *) + nmem_malloc(m_mem, sizeof(*entry)); + entry->m_record = npr->records[i]; + entry->m_offset = i + start; + entry->m_next = m_entries; + m_entries = entry; + } +} + +int Yaz_RecordCache::lookup (ODR o, Z_NamePlusRecordList **npr, + int start, int num, + Odr_oid *syntax) +{ + int i; + yaz_log(LOG_LOG, "cache lookup start=%d num=%d", start, num); + + for (i = 0; im_next) + if (entry->m_offset == start + i && + entry->m_record->which == Z_NamePlusRecord_databaseRecord && + !oid_oidcmp(entry->m_record->u.databaseRecord->direct_reference, + syntax)) + break; + if (!entry) + return 0; + } + *npr = (Z_NamePlusRecordList *) odr_malloc(o, sizeof(**npr)); + (*npr)->num_records = num; + (*npr)->records = (Z_NamePlusRecord **) + odr_malloc(o, num * sizeof(Z_NamePlusRecord *)); + for (i = 0; im_next) + if (entry->m_offset == start + i && + entry->m_record->which == Z_NamePlusRecord_databaseRecord && + !oid_oidcmp(entry->m_record->u.databaseRecord->direct_reference, + syntax)) + break; + if (!entry) + return 0; + (*npr)->records[i] = entry->m_record; + } + return 1; +}