diff options
Diffstat (limited to 'sql/item_strfunc.cc')
| -rw-r--r-- | sql/item_strfunc.cc | 422 |
1 files changed, 0 insertions, 422 deletions
diff --git a/sql/item_strfunc.cc b/sql/item_strfunc.cc index ae48aeb115a..06569095018 100644 --- a/sql/item_strfunc.cc +++ b/sql/item_strfunc.cc @@ -2522,428 +2522,6 @@ null: return 0; } - -/******************************************************* -General functions for spatial objects -********************************************************/ - -String *Item_func_geometry_from_text::val_str(String *str) -{ - Geometry geom; - String arg_val; - String *wkt= args[0]->val_str(&arg_val); - GTextReadStream trs(wkt->ptr(), wkt->length()); - uint32 srid; - - if ((arg_count == 2) && !args[1]->null_value) - srid= args[1]->val_int(); - else - srid= 0; - - if (str->reserve(SRID_SIZE, 512)) - return 0; - str->length(0); - str->q_append(srid); - if ((null_value=(args[0]->null_value || geom.create_from_wkt(&trs, str, 0)))) - return 0; - return str; -} - - -void Item_func_geometry_from_text::fix_length_and_dec() -{ - max_length=MAX_BLOB_WIDTH; -} - - -String *Item_func_geometry_from_wkb::val_str(String *str) -{ - String arg_val; - String *wkb= args[0]->val_str(&arg_val); - Geometry geom; - uint32 srid; - - if ((arg_count == 2) && !args[1]->null_value) - srid= args[1]->val_int(); - else - srid= 0; - - if (str->reserve(SRID_SIZE, 512)) - return 0; - str->length(0); - str->q_append(srid); - if ((null_value= (args[0]->null_value || - geom.create_from_wkb(wkb->ptr(), wkb->length())))) - return 0; - - str->append(*wkb); - return str; -} - - -void Item_func_geometry_from_wkb::fix_length_and_dec() -{ - max_length=MAX_BLOB_WIDTH; -} - - -String *Item_func_as_text::val_str(String *str) -{ - String arg_val; - String *swkb= args[0]->val_str(&arg_val); - Geometry geom; - - if ((null_value= (args[0]->null_value || - geom.create_from_wkb(swkb->ptr() + SRID_SIZE, - swkb->length() - SRID_SIZE)))) - return 0; - - str->length(0); - - if ((null_value= geom.as_wkt(str))) - return 0; - - return str; -} - -void Item_func_as_text::fix_length_and_dec() -{ - max_length=MAX_BLOB_WIDTH; -} - -String *Item_func_as_wkb::val_str(String *str) -{ - String arg_val; - String *swkb= args[0]->val_str(&arg_val); - Geometry geom; - - if ((null_value= (args[0]->null_value || - geom.create_from_wkb(swkb->ptr() + SRID_SIZE, - swkb->length() - SRID_SIZE)))) - return 0; - - str->copy(swkb->ptr() + SRID_SIZE, swkb->length() - SRID_SIZE, - &my_charset_bin); - return str; -} - -void Item_func_as_wkb::fix_length_and_dec() -{ - max_length= MAX_BLOB_WIDTH; -} - -String *Item_func_geometry_type::val_str(String *str) -{ - String *swkb= args[0]->val_str(str); - Geometry geom; - - if ((null_value= (args[0]->null_value || - geom.create_from_wkb(swkb->ptr() + SRID_SIZE, - swkb->length() - SRID_SIZE)))) - return 0; - str->copy(geom.get_class_info()->m_name, - strlen(geom.get_class_info()->m_name), - default_charset_info); - return str; -} - - -String *Item_func_envelope::val_str(String *str) -{ - String arg_val; - String *swkb= args[0]->val_str(&arg_val); - Geometry geom; - - if ((null_value= args[0]->null_value || - geom.create_from_wkb(swkb->ptr() + SRID_SIZE, - swkb->length() - SRID_SIZE))) - return 0; - - uint32 srid= uint4korr(swkb->ptr()); - str->length(0); - if (str->reserve(SRID_SIZE, 512)) - return 0; - str->q_append(srid); - return (null_value= geom.envelope(str)) ? 0 : str; -} - - -String *Item_func_centroid::val_str(String *str) -{ - String arg_val; - String *swkb= args[0]->val_str(&arg_val); - Geometry geom; - - if ((null_value= args[0]->null_value || - geom.create_from_wkb(swkb->ptr() + SRID_SIZE, - swkb->length() - SRID_SIZE) || - !GEOM_METHOD_PRESENT(geom, centroid))) - return 0; - - if (str->reserve(SRID_SIZE, 512)) - return 0; - str->length(0); - uint32 srid= uint4korr(swkb->ptr()); - str->q_append(srid); - - return (null_value= geom.centroid(str)) ? 0 : str; -} - - -/*********************************************** - Spatial decomposition functions -***********************************************/ - -String *Item_func_spatial_decomp::val_str(String *str) -{ - String arg_val; - String *swkb= args[0]->val_str(&arg_val); - Geometry geom; - - if ((null_value= (args[0]->null_value || - geom.create_from_wkb(swkb->ptr() + SRID_SIZE, - swkb->length() - SRID_SIZE)))) - return 0; - - null_value= 1; - if (str->reserve(SRID_SIZE, 512)) - return 0; - str->length(0); - uint32 srid= uint4korr(swkb->ptr()); - str->q_append(srid); - switch(decomp_func) - { - case SP_STARTPOINT: - if (!GEOM_METHOD_PRESENT(geom,start_point) || geom.start_point(str)) - goto ret; - break; - - case SP_ENDPOINT: - if (!GEOM_METHOD_PRESENT(geom,end_point) || geom.end_point(str)) - goto ret; - break; - - case SP_EXTERIORRING: - if (!GEOM_METHOD_PRESENT(geom,exterior_ring) || geom.exterior_ring(str)) - goto ret; - break; - - default: - goto ret; - } - null_value= 0; - -ret: - return null_value ? 0 : str; -} - - -String *Item_func_spatial_decomp_n::val_str(String *str) -{ - String arg_val; - String *swkb= args[0]->val_str(&arg_val); - long n= (long) args[1]->val_int(); - Geometry geom; - - if ((null_value= (args[0]->null_value || args[1]->null_value || - geom.create_from_wkb(swkb->ptr() + SRID_SIZE, - swkb->length() - SRID_SIZE)))) - return 0; - - null_value= 1; - if (str->reserve(SRID_SIZE, 512)) - return 0; - str->length(0); - uint32 srid= uint4korr(swkb->ptr()); - str->q_append(srid); - switch(decomp_func_n) - { - case SP_POINTN: - if (!GEOM_METHOD_PRESENT(geom,point_n) || geom.point_n(n,str)) - goto ret; - break; - - case SP_GEOMETRYN: - if (!GEOM_METHOD_PRESENT(geom,geometry_n) || geom.geometry_n(n,str)) - goto ret; - break; - - case SP_INTERIORRINGN: - if (!GEOM_METHOD_PRESENT(geom,interior_ring_n) || - geom.interior_ring_n(n,str)) - goto ret; - break; - - default: - goto ret; - } - null_value= 0; - -ret: - return null_value ? 0 : str; -} - - - -/*********************************************** -Functions to concatinate various spatial objects -************************************************/ - - -/* -* Concatinate doubles into Point -*/ - - -String *Item_func_point::val_str(String *str) -{ - double x= args[0]->val(); - double y= args[1]->val(); - - if ( (null_value= (args[0]->null_value || - args[1]->null_value || - str->realloc(1 + 4 + 8 + 8)))) - return 0; - - str->length(0); - str->q_append((char)Geometry::wkbNDR); - str->q_append((uint32)Geometry::wkbPoint); - str->q_append(x); - str->q_append(y); - return str; -} - - -/* - Concatinates various items into various collections - with checkings for valid wkb type of items. - For example, MultiPoint can be a collection of Points only. - coll_type contains wkb type of target collection. - item_type contains a valid wkb type of items. - In the case when coll_type is wkbGeometryCollection, - we do not check wkb type of items, any is valid. -*/ - -String *Item_func_spatial_collection::val_str(String *str) -{ - String arg_value; - uint i; - - null_value= 1; - - str->length(0); - if (str->reserve(1 + 4 + 4, 512)) - return 0; - - str->q_append((char) Geometry::wkbNDR); - str->q_append((uint32) coll_type); - str->q_append((uint32) arg_count); - - for (i= 0; i < arg_count; ++i) - { - String *res= args[i]->val_str(&arg_value); - if (args[i]->null_value) - goto ret; - - if ( coll_type == Geometry::wkbGeometryCollection ) - { - /* - In the case of GeometryCollection we don't need - any checkings for item types, so just copy them - into target collection - */ - if ((null_value= str->reserve(res->length(), 512))) - goto ret; - - str->q_append(res->ptr(), res->length()); - } - else - { - enum Geometry::wkbType wkb_type; - uint32 len=res->length(); - const char *data= res->ptr() + 1; - - /* - In the case of named collection we must to - check that items are of specific type, let's - do this checking now - */ - - if (len < 5) - goto ret; - wkb_type= (Geometry::wkbType) uint4korr(data); - data+= 4; - len-= 5; - if (wkb_type != item_type) - goto ret; - - switch (coll_type) { - case Geometry::wkbMultiPoint: - case Geometry::wkbMultiLineString: - case Geometry::wkbMultiPolygon: - if (len < WKB_HEADER_SIZE) - goto ret; - - data-= WKB_HEADER_SIZE; - len+= WKB_HEADER_SIZE; - if (str->reserve(len, 512)) - goto ret; - str->q_append(data, len); - break; - - case Geometry::wkbLineString: - if (str->reserve(POINT_DATA_SIZE, 512)) - goto ret; - str->q_append(data, POINT_DATA_SIZE); - break; - - case Geometry::wkbPolygon: - { - uint32 n_points; - double x1, y1, x2, y2; - - if (len < 4 + 2 * POINT_DATA_SIZE) - goto ret; - - uint32 llen= len; - const char *ldata= data; - - n_points= uint4korr(data); - data+= 4; - float8get(x1, data); - data+= 8; - float8get(y1, data); - data+= 8; - - data+= (n_points - 2) * POINT_DATA_SIZE; - - float8get(x2, data); - float8get(y2, data + 8); - - if ((x1 != x2) || (y1 != y2)) - goto ret; - - if (str->reserve(llen, 512)) - goto ret; - str->q_append(ldata, llen); - } - break; - - default: - goto ret; - } - } - } - - if (str->length() > current_thd->variables.max_allowed_packet) - goto ret; - - null_value = 0; - -ret: - return null_value ? 0 : str; -} - #ifdef HAVE_COMPRESS #include "../zlib/zlib.h" |