X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=index%2Fretrieve.c;h=ff3bced3d0cbdd74a44d7fe08be345a6648b3c59;hb=527dab66d9847bb7f8a931c558306a070064bf25;hp=364bd23fca2449cb1151afcef7662de85c82c26a;hpb=3731bdaf94aeba2550fc553aebe34831c203dc36;p=idzebra-moved-to-github.git diff --git a/index/retrieve.c b/index/retrieve.c index 364bd23..ff3bced 100644 --- a/index/retrieve.c +++ b/index/retrieve.c @@ -1,4 +1,4 @@ -/* $Id: retrieve.c,v 1.76 2007-11-30 12:19:08 adam Exp $ +/* $Id: retrieve.c,v 1.82 2007-12-05 09:55:57 adam Exp $ Copyright (C) 1995-2007 Index Data ApS @@ -37,6 +37,9 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA #include #include #include +#include + +#define MAX_SYSNOS_PER_RECORD 40 #define ZEBRA_XML_HEADER_STR "index_type = 0; + spec->next = 0; + spec->extra = 0; + + if (!first) + first = spec; + *last = spec; + last = &spec->next; + + cp++; /* skip ',' or second ':' */ + cp0 = cp; + while (*cp != ':' && *cp != '\0' && *cp != ',') + cp++; + spec->index_name = nmem_strdupn(nmem, cp0, cp - cp0); + if (*cp == ':') /* type as well */ + { + cp++; + cp0 = cp; + + while (*cp != '\0' && *cp != ',' && *cp != ':') + cp++; + spec->index_type = nmem_strdupn(nmem, cp0, cp - cp0); + } + if (*cp == ':') /* extra arguments */ + { + cp++; + cp0 = cp; + + while (*cp != '\0' && *cp != ',' && *cp != ':') + cp++; + spec->extra = nmem_strdupn(nmem, cp0, cp - cp0); + } + if (*cp != ',') + break; + } + } + if (*cp != '\0') + *error = 1; + return first; +} + static int parse_zebra_elem(const char *elem, const char **index, size_t *index_len, const char **type, size_t *type_len) @@ -352,7 +420,6 @@ int zebra_special_index_fetch(ZebraHandle zh, zint sysno, ODR odr, wrbuf_printf(wrbuf, " " ZINT_FORMAT, key_in.mem[i]); - /* zebra_term_untrans(zh, index_type, dst_buf, str); */ wrbuf_printf(wrbuf, " %s", dst_buf); wrbuf_printf(wrbuf, "\n"); @@ -484,12 +551,12 @@ int zebra_get_rec_snippets(ZebraHandle zh, zint sysno, return return_code; } -int zebra_special_snippet_fetch(ZebraHandle zh, const char *setname, - zint sysno, ODR odr, - const char *elemsetname, - const Odr_oid *input_format, - const Odr_oid **output_format, - char **rec_bufp, int *rec_lenp) +static int snippet_fetch(ZebraHandle zh, const char *setname, + zint sysno, ODR odr, + const char *elemsetname, + const Odr_oid *input_format, + const Odr_oid **output_format, + char **rec_bufp, int *rec_lenp) { zebra_snippets *rec_snippets = zebra_snippets_create(); int return_code = zebra_get_rec_snippets(zh, sysno, rec_snippets); @@ -534,6 +601,321 @@ int zebra_special_snippet_fetch(ZebraHandle zh, const char *setname, return return_code; } +struct term_collect { + const char *term; + int oc; + zint set_occur; +}; + +zint freq_term(ZebraHandle zh, int ord, const char *term, RSET rset_set) +{ + struct rset_key_control *kc = zebra_key_control_create(zh); + char ord_buf[IT_MAX_WORD]; + int ord_len = key_SU_encode(ord, ord_buf); + char *info; + zint hits = 0; + NMEM nmem = nmem_create(); + + strcpy(ord_buf + ord_len, term); + + info = dict_lookup(zh->reg->dict, ord_buf); + if (info) + { + ISAM_P isam_p; + RSET rsets[2], rset; + memcpy(&isam_p, info+1, sizeof(ISAM_P)); + + rsets[0] = zebra_create_rset_isam(zh, nmem, kc, kc->scope, isam_p, 0); + rsets[1] = rset_dup(rset_set); + + rset = rset_create_and(nmem, kc, kc->scope, 2, rsets); + + zebra_count_set(zh, rset, &hits, zh->approx_limit); + + rset_delete(rsets[0]); + rset_delete(rset); + } + (*kc->dec)(kc); + nmem_destroy(nmem); + return hits; +} + +int term_qsort_handle(const void *a, const void *b) +{ + const struct term_collect *l = a; + const struct term_collect *r = b; + if (l->set_occur < r->set_occur) + return 1; + else if (l->set_occur > r->set_occur) + return -1; + else + { + const char *lterm = l->term ? l->term : ""; + const char *rterm = r->term ? r->term : ""; + return strcmp(lterm, rterm); + } +} + +void term_collect_freq(ZebraHandle zh, + struct term_collect *col, int no_terms_collect, + int ord, RSET rset) +{ + int i; + for (i = 0; i < no_terms_collect; i++) + { + if (col[i].term) + col[i].set_occur = freq_term(zh, ord, col[i].term, rset); + } + qsort(col, no_terms_collect, sizeof(*col), term_qsort_handle); +} + +struct term_collect *term_collect_create(zebra_strmap_t sm, + int no_terms_collect, + NMEM nmem) +{ + const char *term; + void *data_buf; + size_t data_len; + zebra_strmap_it it; + struct term_collect *col = nmem_malloc(nmem, + sizeof *col *no_terms_collect); + int i; + for (i = 0; i < no_terms_collect; i++) + { + col[i].term = 0; + col[i].oc = 0; + col[i].set_occur = 0; + } + /* iterate over terms and collect the most frequent ones */ + it = zebra_strmap_it_create(sm); + while ((term = zebra_strmap_it_next(it, &data_buf, &data_len))) + { + /* invariant: + col[0] has lowest oc . col[no_terms_collect-1] has highest oc */ + int oc = *(int*) data_buf; + int j = 0; + /* insertion may be slow but terms terms will be "infrequent" and + thus number of iterations should be small below + */ + while (j < no_terms_collect && oc > col[j].oc) + j++; + if (j) + { /* oc <= col[j] and oc > col[j-1] */ + --j; + memmove(col, col+1, sizeof(*col) * j); + col[j].term = term; + col[j].oc = oc; + } + } + zebra_strmap_it_destroy(it); + return col; +} + +static ZEBRA_RES facet_fetch(ZebraHandle zh, const char *setname, + ODR odr, + const char *elemsetname, + const Odr_oid *input_format, + const Odr_oid **output_format, + char **rec_bufp, int *rec_lenp) +{ + zint *pos_array; + int i; + int num_recs = 10; /* number of records to analyze */ + ZebraMetaRecord *poset; + ZEBRA_RES ret = ZEBRA_OK; + int *ord_array; + WRBUF wr = wrbuf_alloc(); + int use_xml = 0; + + int no_ord = 0; + struct index_spec *spec, *spec_list; + int error; + + /* see if XML is required for response */ + if (oid_oidcmp(input_format, yaz_oid_recsyn_xml) == 0) + use_xml = 1; + + spec_list = parse_index_spec(elemsetname, odr_getmem(odr), &error); + + if (!spec_list || error) + { + zebra_setError( + zh, + YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_, + 0); + return ZEBRA_FAIL; + } + + for (spec = spec_list; spec; spec = spec->next) + { + if (!spec->index_type) + { + zebra_setError( + zh, + YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_, + 0); + return ZEBRA_FAIL; + } + no_ord++; + } + + ord_array = odr_malloc(odr, sizeof(*ord_array) * no_ord); + + for (spec = spec_list, i = 0; spec; spec = spec->next, i++) + { + int ord = zebraExplain_lookup_attr_str(zh->reg->zei, + zinfo_index_category_index, + spec->index_type, + spec->index_name); + if (ord == -1) + { + zebra_setError( + zh, + YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_, + 0); + return ZEBRA_FAIL; + } + ord_array[i] = ord; + } + pos_array = (zint *) odr_malloc(odr, num_recs * sizeof(*pos_array)); + for (i = 0; i < num_recs; i++) + pos_array[i] = i+1; + poset = zebra_meta_records_create(zh, setname, num_recs, pos_array); + if (!poset) + { + zebra_setError(zh, YAZ_BIB1_SPECIFIED_RESULT_SET_DOES_NOT_EXIST, + setname); + ret = ZEBRA_FAIL; + } + else + { + zebra_strmap_t *map_array + = odr_malloc(odr, sizeof *map_array * no_ord); + for (i = 0; i < no_ord; i++) + map_array[i] = zebra_strmap_create(); + + for (i = 0; i < num_recs; i++) + { + int j; + zint sysnos[MAX_SYSNOS_PER_RECORD]; + int no_sysnos = MAX_SYSNOS_PER_RECORD; + if (!poset[i].sysno) + continue; + ret = zebra_result_recid_to_sysno(zh, setname, + poset[i].sysno, + sysnos, &no_sysnos); + assert(no_sysnos > 0); + for (j = 0; j < no_sysnos; j++) + { + size_t slen; + const char *str; + struct it_key key_in; + Record rec = rec_get(zh->reg->records, sysnos[j]); + zebra_rec_keys_t keys = zebra_rec_keys_open(); + zebra_rec_keys_set_buf(keys, rec->info[recInfo_delKeys], + rec->size[recInfo_delKeys], 0); + + if (zebra_rec_keys_rewind(keys)) + { + while (zebra_rec_keys_read(keys, &str, &slen, &key_in)) + { + int i; + struct index_spec *spec; + for (spec = spec_list, i = 0; i < no_ord; + i++, spec = spec->next) + { + int ord = CAST_ZINT_TO_INT(key_in.mem[0]); + if (ord == ord_array[i] && + str[0] != FIRST_IN_FIELD_CHAR) + { + int *freq; + zebra_strmap_t sm = map_array[i]; + + freq = zebra_strmap_lookup(sm, str, 0, 0); + if (freq) + (*freq)++; + else + { + int v = 1; + zebra_strmap_add(sm, str, &v, sizeof v); + } + } + } + } + } + zebra_rec_keys_close(keys); + rec_free(&rec); + } + } + if (use_xml) + wrbuf_puts(wr, "\n"); + for (spec = spec_list, i = 0; i < no_ord; i++, spec = spec->next) + { + int j; + NMEM nmem = nmem_create(); + struct term_collect *col; + int no_collect_terms = 20; + + if (spec->extra) + no_collect_terms = atoi(spec->extra); + if (no_collect_terms < 1) + no_collect_terms = 1; + col = term_collect_create(map_array[i], no_collect_terms, nmem); + term_collect_freq(zh, col, no_collect_terms, ord_array[i], + resultSetRef(zh, setname)); + + if (use_xml) + wrbuf_printf(wr, " \n", + spec->index_type, spec->index_name); + else + wrbuf_printf(wr, "facet %s %s\n", + spec->index_type, spec->index_name); + for (j = 0; j < no_collect_terms; j++) + { + if (col[j].term) + { + char dst_buf[IT_MAX_WORD]; + zebra_term_untrans(zh, spec->index_type, dst_buf, col[j].term); + if (use_xml) + { + wrbuf_printf(wr, " "); + wrbuf_xmlputs(wr, dst_buf); + wrbuf_printf(wr, "\n"); + } + else + { + wrbuf_printf(wr, "term %d", col[j].oc); + if (col[j].set_occur) + wrbuf_printf(wr, " " ZINT_FORMAT, + col[j].set_occur); + wrbuf_printf(wr, ": %s\n", dst_buf); + } + } + } + if (use_xml) + wrbuf_puts(wr, " \n"); + nmem_destroy(nmem); + } + if (use_xml) + wrbuf_puts(wr, "\n"); + for (i = 0; i < no_ord; i++) + zebra_strmap_destroy(map_array[i]); + } + + + *rec_bufp = odr_strdup(odr, wrbuf_cstr(wr)); + wrbuf_destroy(wr); + *rec_lenp = strlen(*rec_bufp); + *output_format = yaz_oid_recsyn_xml; + + zebra_meta_records_destroy(zh, poset, num_recs); + return ret; +} + int zebra_special_fetch(ZebraHandle zh, const char *setname, zint sysno, int score, ODR odr, const char *elemsetname, @@ -546,13 +928,20 @@ int zebra_special_fetch(ZebraHandle zh, const char *setname, /* set output variables before processing possible error states */ /* *rec_lenp = 0; */ + if (elemsetname && 0 == strncmp(elemsetname, "facet", 5)) + { + return facet_fetch(zh, setname, odr, + elemsetname + 5, + input_format, output_format, + rec_bufp, rec_lenp); + } if (elemsetname && 0 == strcmp(elemsetname, "snippet")) { - return zebra_special_snippet_fetch(zh, setname, sysno, odr, - elemsetname + 7, - input_format, output_format, - rec_bufp, rec_lenp); + return snippet_fetch(zh, setname, sysno, odr, + elemsetname + 7, + input_format, output_format, + rec_bufp, rec_lenp); } /* processing zebra::meta::sysno elemset without fetching binary data */ @@ -716,8 +1105,8 @@ int zebra_record_fetch(ZebraHandle zh, const char *setname, RecordAttr *recordAttr; void *clientData; int return_code = 0; - zint sysnos[10]; - int no_sysnos = 10; + zint sysnos[MAX_SYSNOS_PER_RECORD]; + int no_sysnos = MAX_SYSNOS_PER_RECORD; ZEBRA_RES res; res = zebra_result_recid_to_sysno(zh, setname, sysno, sysnos, &no_sysnos);