Additional fix for bug #5136 (Geometry object is corrupted when queried)

CREATE TABLE t1 SELECT POINT(1,2); fixed


mysql-test/r/gis.result:
  Appropriate test result
mysql-test/t/gis.test:
  test case
sql/item_geofunc.cc:
  Item_geometry_func::fix_lengths_and_dec implementation
  several fix_length_and_dec's not needed now
sql/item_geofunc.h:
  Item_geometry_func class presented

mysql-test/r/gis.result

@@ -485,3 +485,10 @@ MBRContains(GeomFromText('Polygon((0 0, 0 7, 7 7, 7 0, 0 0))'), a);
 AsText(a)
 POINT(1 1)
 drop table t1;
+create table t1 select POINT(1,3);
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `POINT(1,3)` longblob NOT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;

mysql-test/t/gis.test

@@ -190,3 +190,7 @@ select AsText(a) from t1 where
   and
   MBRContains(GeomFromText('Polygon((0 0, 0 7, 7 7, 7 0, 0 0))'), a);
 drop table t1;
+
+create table t1 select POINT(1,3);
+show create table t1;
+drop table t1;

sql/item_geofunc.cc

@@ -27,6 +27,13 @@
 #include "sql_acl.h"
 #include <m_ctype.h>
 
+void Item_geometry_func::fix_length_and_dec()
+{
+  collation.set(&my_charset_bin);
+  decimals=0;
+  max_length=MAX_BLOB_WIDTH;
+}
+
 
 String *Item_func_geometry_from_text::val_str(String *str)
 {
@@ -55,12 +62,6 @@ String *Item_func_geometry_from_text::val_str(String *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)
 {
   DBUG_ASSERT(fixed == 1);
@@ -86,12 +87,6 @@ String *Item_func_geometry_from_wkb::val_str(String *str)
 }
 
 
-void Item_func_geometry_from_wkb::fix_length_and_dec()
-{
-  max_length=MAX_BLOB_WIDTH;
-}
-
-
 String *Item_func_as_wkt::val_str(String *str)
 {
   DBUG_ASSERT(fixed == 1);
@@ -140,12 +135,6 @@ String *Item_func_as_wkb::val_str(String *str)
 }
 
 
-void Item_func_as_wkb::fix_length_and_dec()
-{
-  max_length= MAX_BLOB_WIDTH;
-}
-
-
 String *Item_func_geometry_type::val_str(String *str)
 {
   DBUG_ASSERT(fixed == 1);

sql/item_geofunc.h

@@ -23,24 +23,33 @@
 #pragma interface			/* gcc class implementation */
 #endif
 
-class Item_func_geometry_from_text: public Item_str_func
+class Item_geometry_func: public Item_str_func
 {
 public:
-  Item_func_geometry_from_text(Item *a) :Item_str_func(a) {}
-  Item_func_geometry_from_text(Item *a, Item *srid) :Item_str_func(a, srid) {}
+  Item_geometry_func() :Item_str_func() {}
+  Item_geometry_func(Item *a) :Item_str_func(a) {}
+  Item_geometry_func(Item *a,Item *b) :Item_str_func(a,b) {}
+  Item_geometry_func(Item *a,Item *b,Item *c) :Item_str_func(a,b,c) {}
+  Item_geometry_func(List<Item> &list) :Item_str_func(list) {}
+  void fix_length_and_dec();
+};
+
+class Item_func_geometry_from_text: public Item_geometry_func
+{
+public:
+  Item_func_geometry_from_text(Item *a) :Item_geometry_func(a) {}
+  Item_func_geometry_from_text(Item *a, Item *srid) :Item_geometry_func(a, srid) {}
   const char *func_name() const { return "geometryfromtext"; }
   String *val_str(String *);
-  void fix_length_and_dec();
 };
 
-class Item_func_geometry_from_wkb: public Item_str_func
+class Item_func_geometry_from_wkb: public Item_geometry_func
 {
 public:
-  Item_func_geometry_from_wkb(Item *a): Item_str_func(a) {}
-  Item_func_geometry_from_wkb(Item *a, Item *srid): Item_str_func(a, srid) {}
+  Item_func_geometry_from_wkb(Item *a): Item_geometry_func(a) {}
+  Item_func_geometry_from_wkb(Item *a, Item *srid): Item_geometry_func(a, srid) {}
   const char *func_name() const { return "geometryfromwkb"; }
   String *val_str(String *);
-  void fix_length_and_dec();
 };
 
 class Item_func_as_wkt: public Item_str_func
@@ -52,13 +61,12 @@ public:
   void fix_length_and_dec();
 };
 
-class Item_func_as_wkb: public Item_str_func
+class Item_func_as_wkb: public Item_geometry_func
 {
 public:
-  Item_func_as_wkb(Item *a): Item_str_func(a) {}
+  Item_func_as_wkb(Item *a): Item_geometry_func(a) {}
   const char *func_name() const { return "aswkb"; }
   String *val_str(String *);
-  void fix_length_and_dec();
 };
 
 class Item_func_geometry_type: public Item_str_func
@@ -73,40 +81,37 @@ public:
   };
 };
 
-class Item_func_centroid: public Item_str_func
+class Item_func_centroid: public Item_geometry_func
 {
 public:
-  Item_func_centroid(Item *a): Item_str_func(a) {}
+  Item_func_centroid(Item *a): Item_geometry_func(a) {}
   const char *func_name() const { return "centroid"; }
   String *val_str(String *);
-  void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
 };
 
-class Item_func_envelope: public Item_str_func
+class Item_func_envelope: public Item_geometry_func
 {
 public:
-  Item_func_envelope(Item *a): Item_str_func(a) {}
+  Item_func_envelope(Item *a): Item_geometry_func(a) {}
   const char *func_name() const { return "envelope"; }
   String *val_str(String *);
-  void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
 };
 
-class Item_func_point: public Item_str_func
+class Item_func_point: public Item_geometry_func
 {
 public:
-  Item_func_point(Item *a, Item *b): Item_str_func(a, b) {}
-  Item_func_point(Item *a, Item *b, Item *srid): Item_str_func(a, b, srid) {}
+  Item_func_point(Item *a, Item *b): Item_geometry_func(a, b) {}
+  Item_func_point(Item *a, Item *b, Item *srid): Item_geometry_func(a, b, srid) {}
   const char *func_name() const { return "point"; }
   String *val_str(String *);
-  void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
 };
 
-class Item_func_spatial_decomp: public Item_str_func
+class Item_func_spatial_decomp: public Item_geometry_func
 {
   enum Functype decomp_func;
 public:
   Item_func_spatial_decomp(Item *a, Item_func::Functype ft) :
-  	Item_str_func(a) { decomp_func = ft; }
+  	Item_geometry_func(a) { decomp_func = ft; }
   const char *func_name() const 
   { 
     switch (decomp_func)
@@ -123,15 +128,14 @@ public:
     }
   }
   String *val_str(String *);
-  void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
 };
 
-class Item_func_spatial_decomp_n: public Item_str_func
+class Item_func_spatial_decomp_n: public Item_geometry_func
 {
   enum Functype decomp_func_n;
 public:
   Item_func_spatial_decomp_n(Item *a, Item *b, Item_func::Functype ft):
-  	Item_str_func(a, b) { decomp_func_n = ft; }
+  	Item_geometry_func(a, b) { decomp_func_n = ft; }
   const char *func_name() const 
   { 
     switch (decomp_func_n)
@@ -148,10 +152,9 @@ public:
     }
   }
   String *val_str(String *);
-  void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
 };
 
-class Item_func_spatial_collection: public Item_str_func
+class Item_func_spatial_collection: public Item_geometry_func
 {
   String tmp_value;
   enum Geometry::wkbType coll_type; 
@@ -159,13 +162,12 @@ class Item_func_spatial_collection: public Item_str_func
 public:
   Item_func_spatial_collection(
      List<Item> &list, enum Geometry::wkbType ct, enum Geometry::wkbType it):
-  Item_str_func(list)
+  Item_geometry_func(list)
   {
     coll_type=ct;
     item_type=it;
   }
   String *val_str(String *);
-  void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
   const char *func_name() const { return "multipoint"; }
 };