mirror of
https://github.com/postgres/postgres.git
synced 2025-07-28 23:42:10 +03:00
pgindent run on all C files. Java run to follow. initdb/regression
tests pass.
This commit is contained in:
Bruce Momjian
@ -6,52 +6,52 @@
|
||||
#include "commands/trigger.h"
|
||||
|
||||
/*
|
||||
* Trigger function accepts variable number of arguments:
|
||||
* Trigger function accepts variable number of arguments:
|
||||
*
|
||||
* 1. relation in which to store the substrings
|
||||
* 2. fields to extract substrings from
|
||||
*
|
||||
* The relation in which to insert *must* have the following layout:
|
||||
* The relation in which to insert *must* have the following layout:
|
||||
*
|
||||
* string varchar(#)
|
||||
* id oid
|
||||
*
|
||||
* where # is the largest size of the varchar columns being indexed
|
||||
* where # is the largest size of the varchar columns being indexed
|
||||
*
|
||||
* Example:
|
||||
*
|
||||
* -- Create the SQL function based on the compiled shared object
|
||||
* create function fti() returns opaque as
|
||||
* '/usr/local/pgsql/lib/contrib/fti.so' language 'C';
|
||||
* -- Create the SQL function based on the compiled shared object
|
||||
* create function fti() returns opaque as
|
||||
* '/usr/local/pgsql/lib/contrib/fti.so' language 'C';
|
||||
*
|
||||
* -- Create the FTI table
|
||||
* create table product_fti (string varchar(255), id oid);
|
||||
* -- Create the FTI table
|
||||
* create table product_fti (string varchar(255), id oid);
|
||||
*
|
||||
* -- Create an index to assist string matches
|
||||
* create index product_fti_string_idx on product_fti (string);
|
||||
* -- Create an index to assist string matches
|
||||
* create index product_fti_string_idx on product_fti (string);
|
||||
*
|
||||
* -- Create an index to assist trigger'd deletes
|
||||
* create index product_fti_id_idx on product_fti (id);
|
||||
* -- Create an index to assist trigger'd deletes
|
||||
* create index product_fti_id_idx on product_fti (id);
|
||||
*
|
||||
* -- Create an index on the product oid column to assist joins
|
||||
* -- between the fti table and the product table
|
||||
* create index product_oid_idx on product (oid);
|
||||
* -- Create an index on the product oid column to assist joins
|
||||
* -- between the fti table and the product table
|
||||
* create index product_oid_idx on product (oid);
|
||||
*
|
||||
* -- Create the trigger to perform incremental changes to the full text index.
|
||||
* create trigger product_fti_trig after update or insert or delete on product
|
||||
* for each row execute procedure fti(product_fti, title, artist);
|
||||
* ^^^^^^^^^^^
|
||||
* table where full text index is stored
|
||||
* ^^^^^^^^^^^^^
|
||||
* columns to index in the base table
|
||||
* -- Create the trigger to perform incremental changes to the full text index.
|
||||
* create trigger product_fti_trig after update or insert or delete on product
|
||||
* for each row execute procedure fti(product_fti, title, artist);
|
||||
* ^^^^^^^^^^^
|
||||
* table where full text index is stored
|
||||
* ^^^^^^^^^^^^^
|
||||
* columns to index in the base table
|
||||
*
|
||||
* After populating 'product', try something like:
|
||||
* After populating 'product', try something like:
|
||||
*
|
||||
* SELECT DISTINCT(p.*) FROM product p, product_fti f1, product_fti f2 WHERE
|
||||
* SELECT DISTINCT(p.*) FROM product p, product_fti f1, product_fti f2 WHERE
|
||||
* f1.string ~ '^slippery' AND f2.string ~ '^wet' AND p.oid=f1.id AND p.oid=f2.id;
|
||||
*
|
||||
* To check that your indicies are being used correctly, make sure you
|
||||
* EXPLAIN SELECT ... your test query above.
|
||||
* To check that your indicies are being used correctly, make sure you
|
||||
* EXPLAIN SELECT ... your test query above.
|
||||
*
|
||||
* CHANGELOG
|
||||
* ---------
|
||||
@ -76,14 +76,14 @@
|
||||
* TODO
|
||||
* ----
|
||||
*
|
||||
* prevent generating duplicate words for an oid in the fti table
|
||||
* save a plan for deletes
|
||||
* create a function that will make the index *after* we have populated
|
||||
* the main table (probably first delete all contents to be sure there's
|
||||
* nothing in it, then re-populate the fti-table)
|
||||
* prevent generating duplicate words for an oid in the fti table
|
||||
* save a plan for deletes
|
||||
* create a function that will make the index *after* we have populated
|
||||
* the main table (probably first delete all contents to be sure there's
|
||||
* nothing in it, then re-populate the fti-table)
|
||||
*
|
||||
* can we do something with operator overloading or a seperate function
|
||||
* that can build the final query automatigally?
|
||||
* can we do something with operator overloading or a seperate function
|
||||
* that can build the final query automatigally?
|
||||
*/
|
||||
|
||||
#define MAX_FTI_QUERY_LENGTH 8192
|
||||
@ -103,16 +103,15 @@ char *StopWords[] = { /* list of words to skip in indexing */
|
||||
"the",
|
||||
"yes"
|
||||
};
|
||||
|
||||
#endif /* USE_STOP_WORDS */
|
||||
#endif /* USE_STOP_WORDS */
|
||||
|
||||
/* stuff for caching query-plans, stolen from contrib/spi/\*.c */
|
||||
typedef struct
|
||||
{
|
||||
char *ident;
|
||||
int nplans;
|
||||
void **splan;
|
||||
} EPlan;
|
||||
char *ident;
|
||||
int nplans;
|
||||
void **splan;
|
||||
} EPlan;
|
||||
|
||||
static EPlan *InsertPlans = NULL;
|
||||
static EPlan *DeletePlans = NULL;
|
||||
@ -201,13 +200,11 @@ fti(PG_FUNCTION_ARGS)
|
||||
Oid *argtypes;
|
||||
Datum values[1];
|
||||
EPlan *plan;
|
||||
int i;
|
||||
int i;
|
||||
|
||||
snprintf(query, MAX_FTI_QUERY_LENGTH, "D%s", indexname);
|
||||
for (i = 1; i < nargs; i++)
|
||||
{
|
||||
snprintf(query, MAX_FTI_QUERY_LENGTH, "%s$%s", query, args[i]);
|
||||
}
|
||||
|
||||
plan = find_plan(query, &DeletePlans, &nDeletePlans);
|
||||
if (plan->nplans <= 0)
|
||||
@ -238,23 +235,21 @@ fti(PG_FUNCTION_ARGS)
|
||||
|
||||
if (isinsert)
|
||||
{
|
||||
char *substring;
|
||||
char *column;
|
||||
void *pplan;
|
||||
Oid *argtypes;
|
||||
char *substring;
|
||||
char *column;
|
||||
void *pplan;
|
||||
Oid *argtypes;
|
||||
Datum values[2];
|
||||
int colnum;
|
||||
struct varlena *data;
|
||||
EPlan *plan;
|
||||
int i;
|
||||
char *buff;
|
||||
char *string;
|
||||
struct varlena *data;
|
||||
EPlan *plan;
|
||||
int i;
|
||||
char *buff;
|
||||
char *string;
|
||||
|
||||
snprintf(query, MAX_FTI_QUERY_LENGTH, "I%s", indexname);
|
||||
for (i = 1; i < nargs; i++)
|
||||
{
|
||||
snprintf(query, MAX_FTI_QUERY_LENGTH, "%s$%s", query, args[i]);
|
||||
}
|
||||
|
||||
plan = find_plan(query, &InsertPlans, &nInsertPlans);
|
||||
|
||||
@ -269,7 +264,7 @@ fti(PG_FUNCTION_ARGS)
|
||||
|
||||
/* prepare plan to gain speed */
|
||||
snprintf(query, MAX_FTI_QUERY_LENGTH, "INSERT INTO %s (string, id) VALUES ($1, $2)",
|
||||
indexname);
|
||||
indexname);
|
||||
pplan = SPI_prepare(query, 2, argtypes);
|
||||
if (!pplan)
|
||||
elog(ERROR, "Full Text Indexing: SPI_prepare: Returned NULL in insert");
|
||||
@ -303,7 +298,7 @@ fti(PG_FUNCTION_ARGS)
|
||||
string++;
|
||||
}
|
||||
|
||||
data = (struct varlena *) palloc(sizeof(int32) + strlen(column) + 1);
|
||||
data = (struct varlena *) palloc(sizeof(int32) + strlen(column) +1);
|
||||
buff = palloc(strlen(column) + 1);
|
||||
/* saves lots of calls in while-loop and in breakup() */
|
||||
|
||||
@ -348,7 +343,6 @@ breakup(char *string, char *substring)
|
||||
|
||||
while (cur_pos > string) /* don't read before start of 'string' */
|
||||
{
|
||||
|
||||
/*
|
||||
* skip pieces at the end of a string that are not alfa-numeric
|
||||
* (ie. 'string$%^&', last_start first points to '&', and after
|
||||
@ -409,7 +403,7 @@ is_stopword(char *text)
|
||||
else
|
||||
StopHigh = StopMiddle;
|
||||
}
|
||||
#endif /* USE_STOP_WORDS */
|
||||
#endif /* USE_STOP_WORDS */
|
||||
|
||||
return (false);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user