1 /* This file is part of the YAZ toolkit.
2 * Copyright (C) 1995-2011 Index Data
3 * See the file LICENSE for details.
8 * \brief Facet utilities
15 #include <yaz/facet.h>
16 #include <yaz/diagbib1.h>
17 #include <yaz/oid_db.h>
18 #include <yaz/oid_std.h>
19 #include <yaz/otherinfo.h>
22 void yaz_oi_set_facetlist(
23 Z_OtherInformation **otherInformation, ODR odr,
24 Z_FacetList *facet_list)
26 int categoryValue = 1;
27 Z_External *z_external = 0;
28 Z_OtherInformationUnit *oi =
29 yaz_oi_update(otherInformation, odr, yaz_oid_userinfo_facet_1,
33 oi->which = Z_OtherInfo_externallyDefinedInfo;
34 z_external = odr_malloc(odr, sizeof(*z_external));
35 z_external->which = Z_External_userFacets;
36 z_external->direct_reference = odr_oiddup(odr, yaz_oid_userinfo_facet_1);
37 z_external->indirect_reference = 0;
38 z_external->descriptor = 0;
39 z_external->u.facetList = facet_list;
40 oi->information.externallyDefinedInfo = z_external;
43 Z_FacetList *yaz_oi_get_facetlist(Z_OtherInformation **otherInformation)
45 int categoryValue = 1;
46 Z_External *z_external = 0;
47 Z_OtherInformationUnit *oi =
48 yaz_oi_update(otherInformation, 0, yaz_oid_userinfo_facet_1,
52 z_external = oi->information.externallyDefinedInfo;
54 if (z_external && z_external->which == Z_External_userFacets) {
55 return z_external->u.facetList;
60 /* Little helper to extract a string attribute */
61 /* Gets the first string, there is usually only one */
62 /* in case of errors, returns null */
64 void yaz_facet_attr_init(struct yaz_facet_attr *attr_values)
66 attr_values->errcode = 0;
67 attr_values->errstring = 0;
68 attr_values->relation = 0;
69 attr_values->useattr = 0;
70 attr_values->useattrbuff[0] = 0;
71 attr_values->limit = 0;
74 static const char *stringattr(Z_ComplexAttribute *c)
77 Z_StringOrNumeric *son;
78 for (i = 0; i < c->num_list; i++)
81 if ( son->which == Z_StringOrNumeric_string)
87 /* Use attribute, @attr1, can be numeric or string */
88 static void useattr(Z_AttributeElement *ae, struct yaz_facet_attr *av)
91 if (ae->which == Z_AttributeValue_complex)
93 s = stringattr(ae->value.complex);
94 yaz_log(YLOG_DEBUG, "useattr %s %s", s, av->useattr);
100 { /* already seen one, can't have duplicates */
101 av->errcode = YAZ_BIB1_UNSUPP_ATTRIBUTE_COMBI;
102 av->errstring = "multiple use attributes";
106 { /* complex that did not return a string */
107 av->errcode = YAZ_BIB1_UNSUPP_ATTRIBUTE_COMBI;
108 av->errstring = "non-string complex attribute";
112 { /* numeric - could translate 4 to 'title' etc */
113 sprintf(av->useattrbuff, ODR_INT_PRINTF, *ae->value.numeric);
114 av->useattr = av->useattrbuff;
119 /* TODO rename to sortorder attr */
120 static void relationattr(Z_AttributeElement *ae, struct yaz_facet_attr *av)
122 if (ae->which == Z_AttributeValue_numeric)
124 if (*ae->value.numeric == 0)
125 av->relation = "desc";
126 else if (*ae->value.numeric == 1)
127 av->relation = "asc";
129 if (*ae->value.numeric == 3) {
130 av->relation = "unknown/unordered";
132 av->errcode = YAZ_BIB1_UNSUPP_RELATION_ATTRIBUTE;
133 sprintf(av->useattrbuff, ODR_INT_PRINTF,
134 *ae-> attributeType);
135 av->errstring = av->useattrbuff;
140 av->errcode = YAZ_BIB1_UNSUPP_RELATION_ATTRIBUTE;
141 av->errstring = "non-numeric relation attribute";
145 static void limitattr(Z_AttributeElement *ae, struct yaz_facet_attr *av)
147 if (ae->which == Z_AttributeValue_numeric)
149 av->limit = *ae->value.numeric;
150 yaz_log(YLOG_DEBUG, "limitattr %d ", av->limit);
154 av->errcode = YAZ_BIB1_UNSUPP_ATTRIBUTE;
155 av->errstring = "non-numeric limit attribute";
159 /* Get the index to be searched from the attributes.
161 can be either "string", or some well-known value like
163 Returns a null and sets errors in rr,
164 emtpy string if no attr found,
165 or the string itself - always a pointer to the Z-structs,
166 so no need to free that string!
169 void yaz_facet_attr_get_z_attributes(const Z_AttributeList *attributes,
170 struct yaz_facet_attr *av)
173 Z_AttributeElement *ae;
174 yaz_log(YLOG_DEBUG, "Attribute num attributes: %d",
175 attributes->num_attributes);
176 for (i=0; i < attributes->num_attributes; i++) {
177 ae = attributes->attributes[i];
178 /* ignoring the attributeSet here */
179 yaz_log(YLOG_DEBUG, "Attribute type %d", (int) *ae->attributeType);
180 if (*ae->attributeType == 1)
181 { /* use attribute */
184 else if (*ae->attributeType == 2)
186 relationattr(ae, av);
188 else if (*ae->attributeType == 3)
193 { /* unknown attribute */
194 av->errcode = YAZ_BIB1_UNSUPP_ATTRIBUTE_TYPE;
195 sprintf(av->useattrbuff, ODR_INT_PRINTF,
196 *ae-> attributeType);
197 av->errstring = av->useattrbuff;
198 yaz_log(YLOG_DEBUG, "Unsupported attribute type %s", av->useattrbuff);
199 /* would like to give a better message, but the standard */
200 /* tells me to return the attribute type */
203 return; /* no need to dig deeper, return on first error */
208 Z_Term *term_create(ODR odr, const char *cstr)
210 Z_Term *term = odr_malloc(odr, sizeof(*term));
211 term->which = Z_Term_characterString;
212 term->u.characterString = odr_strdup(odr, cstr);
216 Z_FacetTerm* facet_term_create(ODR odr, Z_Term *term, int freq)
218 Z_FacetTerm *facet_term = odr_malloc(odr, sizeof(*facet_term));
219 facet_term->count = odr_malloc(odr, sizeof(*facet_term->count));
220 facet_term->term = term;
221 *facet_term->count = freq;
225 Z_FacetField* facet_field_create(ODR odr, Z_AttributeList *attributes,
228 Z_FacetField *facet_field = odr_malloc(odr, sizeof(*facet_field));
229 facet_field->attributes = attributes;
230 facet_field->num_terms = num_terms;
231 facet_field->terms = odr_malloc(odr, num_terms * sizeof(*facet_field->terms));
235 void facet_field_term_set(ODR odr, Z_FacetField *field,
236 Z_FacetTerm *facet_term, int index)
238 assert(0 <= index && index < field->num_terms);
239 field->terms[index] = facet_term;
242 Z_FacetList* facet_list_create(ODR odr, int num_facets)
244 Z_FacetList *facet_list = odr_malloc(odr, sizeof(*facet_list));
245 facet_list->num = num_facets;
246 facet_list->elements =
247 odr_malloc(odr, facet_list->num * sizeof(*facet_list->elements));
251 void facet_list_field_set(ODR odr, Z_FacetList *list, Z_FacetField *field,
254 assert(0 <= index && index < list->num);
255 list->elements[index] = field;
261 * c-file-style: "Stroustrup"
262 * indent-tabs-mode: nil
264 * vim: shiftwidth=4 tabstop=8 expandtab