34 |
#define GET_STR(textp) DatumGetCString(DirectFunctionCall1(textout, PointerGetDatum(textp))) |
#define GET_STR(textp) DatumGetCString(DirectFunctionCall1(textout, PointerGetDatum(textp))) |
35 |
#define GET_TEXT(cstrp) DatumGetTextP(DirectFunctionCall1(textin, CStringGetDatum(cstrp))) |
#define GET_TEXT(cstrp) DatumGetTextP(DirectFunctionCall1(textin, CStringGetDatum(cstrp))) |
36 |
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|
37 |
|
/* SortMem got renamed in PostgreSQL 8.0 */ |
38 |
|
#ifndef SortMem |
39 |
|
#define SortMem 16 * 1024 |
40 |
|
#endif |
41 |
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|
42 |
/* prototype */ |
/* prototype */ |
43 |
char *attr2text(ESTDOC *doc, char *attr); |
char *attr2text(ESTDOC *doc, char *attr); |
44 |
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|
|
ESTDB *db; |
|
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ESTCOND *cond; |
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ESTDOC *doc; |
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const CBLIST *texts; |
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int ecode, *est_result, resnum, i, j; |
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|
int limit = 0; |
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int offset = 0; |
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|
|
|
/* define PostgreSQL v1 function */ |
|
|
PG_FUNCTION_INFO_V1(pgest); |
|
|
Datum pgest(PG_FUNCTION_ARGS) { |
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FuncCallContext *funcctx; |
|
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int call_cntr; |
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int max_calls; |
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TupleDesc tupdesc; |
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TupleTableSlot *slot; |
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AttInMetadata *attinmeta; |
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char *index_path; |
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char *query; |
|
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char *attr; |
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/* stuff done only on the first call of the function */ |
|
|
if (SRF_IS_FIRSTCALL()) { |
|
|
MemoryContext oldcontext; |
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|
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/* create a function context for cross-call persistence */ |
|
|
funcctx = SRF_FIRSTCALL_INIT(); |
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/* switch to memory context appropriate for multiple function calls */ |
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oldcontext = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx); |
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/* take arguments from function */ |
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/* index path */ |
|
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if (PG_ARGISNULL(0)) { |
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|
elog(ERROR, "index path can't be null"); |
|
|
SRF_RETURN_DONE(funcctx); |
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|
} |
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|
index_path = _textout(PG_GETARG_TEXT_P(0)); |
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/* query string */ |
|
|
if (PG_ARGISNULL(0)) { |
|
|
query = ""; |
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|
} else { |
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|
query = _textout(PG_GETARG_TEXT_P(1)); |
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|
} |
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/* atribute filter */ |
|
|
if (PG_ARGISNULL(2)) { |
|
|
attr = ""; |
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|
} else { |
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|
attr = _textout(PG_GETARG_TEXT_P(2)); |
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|
} |
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/* limit */ |
|
|
if (PG_ARGISNULL(3)) { |
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limit = 0; |
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} else { |
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limit = PG_GETARG_INT32(3); |
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|
} |
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/* offset */ |
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|
if (PG_ARGISNULL(4)) { |
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offset = 0; |
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|
} else { |
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offset = PG_GETARG_INT32(4); |
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} |
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/* open the database */ |
|
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elog(DEBUG1, "pgest: est_db_open(%s)", index_path); |
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if(!(db = est_db_open(index_path, ESTDBREADER, &ecode))){ |
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|
elog(ERROR, "est_db_open: can't open %s [%d]: %s", index_path, ecode, est_err_msg(ecode)); |
|
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SRF_RETURN_DONE(funcctx); |
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} |
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elog(INFO, "pgest: query[%s] attr[%s] limit %d offset %d", query, (PG_ARGISNULL(2) ? "NULL" : attr), limit, offset); |
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/* create a search condition object */ |
|
|
if (!(cond = est_cond_new())) { |
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|
elog(INFO, "pgest: est_cond_new failed"); |
|
|
SRF_RETURN_DONE(funcctx); |
|
|
} |
|
|
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/* set the search phrase to the search condition object */ |
|
|
if (! PG_ARGISNULL(1) && strlen(query) > 0) |
|
|
est_cond_set_phrase(cond, query); |
|
|
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|
|
/* minimum valid attribute length is 10: @a STREQ a */ |
|
|
if (! PG_ARGISNULL(2) && strlen(attr) >= 10) { |
|
|
elog(INFO,"est_cond_add_attr(%s)", attr); |
|
|
est_cond_add_attr(cond, attr); |
|
|
} |
|
|
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|
|
/* get the result of search */ |
|
|
est_result = est_db_search(db, cond, &resnum, NULL); |
|
|
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|
|
/* total number of tuples to be returned */ |
|
|
if (limit && limit < resnum) { |
|
|
funcctx->max_calls = limit - offset; |
|
|
} else { |
|
|
funcctx->max_calls = resnum - offset; |
|
|
} |
|
|
|
|
|
/* check if results exists */ |
|
|
if ( 0 == funcctx->max_calls ) |
|
|
elog(INFO, "pgest: no results for: %s", query ); |
|
|
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|
|
elog(DEBUG1, "pgest: found %d hits for %s", resnum, query); |
|
|
|
|
|
/* Build a tuple description for a __pgest tuple */ |
|
|
tupdesc = RelationNameGetTupleDesc("__pgest"); |
|
|
|
|
|
/* allocate a slot for a tuple with this tupdesc */ |
|
|
slot = TupleDescGetSlot(tupdesc); |
|
|
|
|
|
/* assign slot to function context */ |
|
|
funcctx->slot = slot; |
|
|
|
|
|
/* |
|
|
* generate attribute metadata needed later to produce tuples from raw |
|
|
* C strings |
|
|
*/ |
|
|
attinmeta = TupleDescGetAttInMetadata(tupdesc); |
|
|
funcctx->attinmeta = attinmeta; |
|
|
|
|
|
MemoryContextSwitchTo(oldcontext); |
|
|
|
|
|
elog(DEBUG1, "SRF_IS_FIRSTCALL done"); |
|
|
} |
|
|
|
|
|
/* stuff done on every call of the function */ |
|
|
funcctx = SRF_PERCALL_SETUP(); |
|
|
|
|
|
call_cntr = funcctx->call_cntr; |
|
|
max_calls = funcctx->max_calls; |
|
|
slot = funcctx->slot; |
|
|
attinmeta = funcctx->attinmeta; |
|
|
|
|
|
if (limit && call_cntr > limit - 1) { |
|
|
elog(INFO, "call_cntr: %d limit: %d", call_cntr, limit); |
|
|
SRF_RETURN_DONE(funcctx); |
|
|
} |
|
|
|
|
|
if (call_cntr < max_calls) { |
|
|
char **values; |
|
|
HeapTuple tuple; |
|
|
Datum result; |
|
|
|
|
|
elog(DEBUG1, "pgest: loop count %d", call_cntr); |
|
|
|
|
|
if (! est_result) { |
|
|
elog(ERROR, "pgest: no estraier results"); |
|
|
SRF_RETURN_DONE(funcctx); |
|
|
} |
|
|
|
|
|
/* |
|
|
* Prepare a values array for storage in our slot. |
|
|
* This should be an array of C strings which will |
|
|
* be processed later by the type input functions. |
|
|
*/ |
|
|
|
|
|
if (doc = est_db_get_doc(db, est_result[call_cntr + offset], 0)) { |
|
|
|
|
|
elog(DEBUG1, "URI: %s\n Title: %s\n", |
|
|
est_doc_attr(doc, "@uri"), |
|
|
est_doc_attr(doc, "@title") |
|
|
); |
|
|
|
|
|
values = (char **) palloc(4 * sizeof(char *)); |
|
|
|
|
|
// values[0] = (char *) palloc(strlen(_estval) * sizeof(char)); |
|
|
|
|
|
values[0] = (char *) attr2text(doc,"@id"); |
|
|
values[1] = (char *) attr2text(doc,"@uri"); |
|
|
values[2] = (char *) attr2text(doc,"@title"); |
|
|
values[3] = (char *) attr2text(doc,"@size"); |
|
|
|
|
|
/* destloy the document object */ |
|
|
elog(DEBUG2, "est_doc_delete"); |
|
|
est_doc_delete(doc); |
|
|
} else { |
|
|
elog(INFO, "no result from estraier"); |
|
|
values[0] = DatumGetCString( "" ); |
|
|
values[1] = DatumGetCString( "" ); |
|
|
values[2] = DatumGetCString( "" ); |
|
|
values[3] = DatumGetCString( "" ); |
|
|
} |
|
|
|
|
|
|
|
|
elog(DEBUG2, "build tuple"); |
|
|
/* build a tuple */ |
|
|
tuple = BuildTupleFromCStrings(attinmeta, values); |
|
|
|
|
|
elog(DEBUG2, "make tuple into datum"); |
|
|
/* make the tuple into a datum */ |
|
|
result = TupleGetDatum(slot, tuple); |
|
|
|
|
|
elog(DEBUG2, "cleanup"); |
|
|
/* clean up ? */ |
|
|
/* |
|
|
pfree(values[0]); |
|
|
pfree(values[1]); |
|
|
pfree(values[2]); |
|
|
pfree(values[3]); |
|
|
pfree(values); |
|
|
*/ |
|
|
|
|
|
elog(DEBUG2, "cleanup over"); |
|
|
|
|
|
SRF_RETURN_NEXT(funcctx, result); |
|
|
} else { |
|
|
elog(DEBUG1, "loop over"); |
|
|
|
|
|
if(!est_db_close(db, &ecode)){ |
|
|
elog(INFO, "est_db_close error: %s", est_err_msg(ecode)); |
|
|
} |
|
|
|
|
|
/* do when there is no more left */ |
|
|
SRF_RETURN_DONE(funcctx); |
|
|
} |
|
|
} |
|
45 |
|
|
46 |
/* work in progress */ |
/* work in progress */ |
47 |
PG_FUNCTION_INFO_V1(pgest_attr); |
PG_FUNCTION_INFO_V1(pgest_attr); |
48 |
Datum pgest_attr(PG_FUNCTION_ARGS) |
Datum pgest_attr(PG_FUNCTION_ARGS) |
49 |
{ |
{ |
50 |
ArrayType *attr_arr = PG_GETARG_ARRAYTYPE_P(5); |
ArrayType *attr_arr = PG_GETARG_ARRAYTYPE_P(6); |
51 |
Oid element_type = ARR_ELEMTYPE(attr_arr); |
Oid attr_element_type = ARR_ELEMTYPE(attr_arr); |
52 |
int ndims = ARR_NDIM(attr_arr); |
int attr_ndims = ARR_NDIM(attr_arr); |
53 |
int *dim_counts = ARR_DIMS(attr_arr); |
int *attr_dim_counts = ARR_DIMS(attr_arr); |
54 |
int *dim_lower_bounds = ARR_LBOUND(attr_arr); |
int *attr_dim_lower_bounds = ARR_LBOUND(attr_arr); |
55 |
int ncols = 0; |
int ncols = 0; |
56 |
int nrows = 0; |
int nrows = 0; |
57 |
int indx[MAXDIM]; |
int indx[MAXDIM]; |
58 |
int16 typlen; |
int16 attr_len; |
59 |
bool typbyval; |
bool attr_byval; |
60 |
char typalign; |
char attr_align; |
61 |
ReturnSetInfo *rsinfo = (ReturnSetInfo *) fcinfo->resultinfo; |
ReturnSetInfo *rsinfo = (ReturnSetInfo *) fcinfo->resultinfo; |
62 |
AttInMetadata *attinmeta; |
AttInMetadata *attinmeta; |
63 |
TupleDesc tupdesc; |
TupleDesc tupdesc; |
70 |
int rsinfo_ncols; |
int rsinfo_ncols; |
71 |
int i, j; |
int i, j; |
72 |
/* estvars */ |
/* estvars */ |
73 |
|
ESTDB *db; |
74 |
|
ESTCOND *cond; |
75 |
|
ESTDOC *doc; |
76 |
|
const CBLIST *texts; |
77 |
|
int ecode, *est_result, resnum; |
78 |
|
int limit = 0; |
79 |
|
int offset = 0; |
80 |
|
|
81 |
char *index_path; |
char *index_path; |
82 |
char *query; |
char *query; |
83 |
char *attr; |
char *attr; |
84 |
|
char *order; |
85 |
|
|
86 |
|
|
87 |
/* only allow 1D input array */ |
/* only allow 1D input array */ |
88 |
if (ndims == 1) |
if (attr_ndims == 1) |
89 |
{ |
{ |
90 |
ncols = dim_counts[0]; |
ncols = attr_dim_counts[0]; |
91 |
} |
} |
92 |
else |
else |
93 |
ereport(ERROR, |
ereport(ERROR, |
103 |
"allowed in this context"))); |
"allowed in this context"))); |
104 |
|
|
105 |
/* get info about element type needed to construct the array */ |
/* get info about element type needed to construct the array */ |
106 |
get_typlenbyvalalign(element_type, &typlen, &typbyval, &typalign); |
get_typlenbyvalalign(attr_element_type, &attr_len, &attr_byval, &attr_align); |
107 |
|
|
108 |
/* get the requested return tuple description */ |
/* get the requested return tuple description */ |
109 |
tupdesc = rsinfo->expectedDesc; |
tupdesc = rsinfo->expectedDesc; |
144 |
index_path = _textout(PG_GETARG_TEXT_P(0)); |
index_path = _textout(PG_GETARG_TEXT_P(0)); |
145 |
|
|
146 |
/* query string */ |
/* query string */ |
147 |
if (PG_ARGISNULL(0)) { |
if (PG_ARGISNULL(1)) { |
148 |
query = ""; |
query = ""; |
149 |
} else { |
} else { |
150 |
query = _textout(PG_GETARG_TEXT_P(1)); |
query = _textout(PG_GETARG_TEXT_P(1)); |
156 |
} else { |
} else { |
157 |
attr = _textout(PG_GETARG_TEXT_P(2)); |
attr = _textout(PG_GETARG_TEXT_P(2)); |
158 |
} |
} |
159 |
|
|
160 |
|
/* sort order */ |
161 |
|
if (PG_ARGISNULL(3)) { |
162 |
|
order = ""; |
163 |
|
} else { |
164 |
|
order = _textout(PG_GETARG_TEXT_P(3)); |
165 |
|
} |
166 |
|
|
167 |
|
|
168 |
/* limit */ |
/* limit */ |
169 |
if (PG_ARGISNULL(3)) { |
if (PG_ARGISNULL(4)) { |
170 |
limit = 0; |
limit = 0; |
171 |
} else { |
} else { |
172 |
limit = PG_GETARG_INT32(3); |
limit = PG_GETARG_INT32(4); |
173 |
} |
} |
174 |
|
|
175 |
/* offset */ |
/* offset */ |
176 |
if (PG_ARGISNULL(4)) { |
if (PG_ARGISNULL(5)) { |
177 |
offset = 0; |
offset = 0; |
178 |
} else { |
} else { |
179 |
offset = PG_GETARG_INT32(4); |
offset = PG_GETARG_INT32(5); |
180 |
} |
} |
181 |
|
|
182 |
|
|
189 |
errdetail(est_err_msg(ecode)))); |
errdetail(est_err_msg(ecode)))); |
190 |
} |
} |
191 |
|
|
192 |
elog(INFO, "pgest_attr: query[%s] attr[%s] limit %d offset %d", query, (PG_ARGISNULL(2) ? "NULL" : attr), limit, offset); |
elog(DEBUG1, "pgest_attr: query[%s] attr[%s] limit %d offset %d", query, (PG_ARGISNULL(2) ? "NULL" : attr), limit, offset); |
193 |
|
|
194 |
/* create a search condition object */ |
/* create a search condition object */ |
195 |
if (!(cond = est_cond_new())) { |
if (!(cond = est_cond_new())) { |
203 |
|
|
204 |
/* minimum valid attribute length is 10: @a STREQ a */ |
/* minimum valid attribute length is 10: @a STREQ a */ |
205 |
if (! PG_ARGISNULL(2) && strlen(attr) >= 10) { |
if (! PG_ARGISNULL(2) && strlen(attr) >= 10) { |
206 |
elog(INFO,"est_cond_add_attr(%s)", attr); |
elog(DEBUG1,"est_cond_add_attr(%s)", attr); |
207 |
est_cond_add_attr(cond, attr); |
est_cond_add_attr(cond, attr); |
208 |
} |
} |
209 |
|
|
210 |
|
/* set the search phrase to the search condition object */ |
211 |
|
if (! PG_ARGISNULL(3) && strlen(order) > 0) { |
212 |
|
elog(DEBUG1,"est_cond_set_order(%s)", order); |
213 |
|
est_cond_set_order(cond, order); |
214 |
|
} |
215 |
|
|
216 |
|
if (limit) { |
217 |
|
elog(DEBUG1,"est_cond_set_max(%d)", limit + offset); |
218 |
|
est_cond_set_max(cond, limit + offset); |
219 |
|
} |
220 |
|
|
221 |
/* get the result of search */ |
/* get the result of search */ |
222 |
est_result = est_db_search(db, cond, &resnum, NULL); |
est_result = est_db_search(db, cond, &resnum, NULL); |
223 |
|
|
228 |
|
|
229 |
/* total number of tuples to be returned */ |
/* total number of tuples to be returned */ |
230 |
if (limit && limit < resnum) { |
if (limit && limit < resnum) { |
231 |
nrows = limit - offset; |
nrows = limit; |
232 |
} else { |
} else { |
233 |
nrows = resnum - offset; |
nrows = resnum - offset; |
234 |
} |
} |
258 |
bool isnull; |
bool isnull; |
259 |
|
|
260 |
/* array value of this position */ |
/* array value of this position */ |
261 |
indx[0] = j + dim_lower_bounds[0]; |
indx[0] = j + attr_dim_lower_bounds[0]; |
262 |
|
|
263 |
dvalue = array_ref(attr_arr, ndims, indx, -1, typlen, typbyval, typalign, &isnull); |
dvalue = array_ref(attr_arr, attr_ndims, indx, -1, attr_len, attr_byval, attr_align, &isnull); |
264 |
|
|
265 |
if (!isnull && doc) |
if (!isnull && doc) |
266 |
values[j] = DatumGetCString( |
values[j] = DatumGetCString( |
267 |
attr2text(doc, |
attr2text(doc, |
268 |
DirectFunctionCall1(textout, dvalue) |
(char *)DirectFunctionCall1(textout, dvalue) |
269 |
)); |
)); |
270 |
else |
else |
271 |
values[j] = NULL; |
values[j] = NULL; |
294 |
rsinfo->setDesc = tupdesc; |
rsinfo->setDesc = tupdesc; |
295 |
MemoryContextSwitchTo(oldcontext); |
MemoryContextSwitchTo(oldcontext); |
296 |
|
|
297 |
|
est_cond_delete(cond); |
298 |
|
|
299 |
if(!est_db_close(db, &ecode)){ |
if(!est_db_close(db, &ecode)){ |
300 |
ereport(ERROR, (errcode(ERRCODE_IO_ERROR), |
ereport(ERROR, (errcode(ERRCODE_IO_ERROR), |
301 |
errmsg("est_db_close: %d", ecode), |
errmsg("est_db_close: %d", ecode), |