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[10982] Optimize memory usage of Field class used in DB code. Should also slightly speedup server startup time.

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Signed-off-by: Ambal <pogrebniak@gala.net>
This commit is contained in:
Ambal 2011-01-07 18:53:48 +02:00
parent f56ae22ed9
commit b89e531fee
3 changed files with 11 additions and 53 deletions
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15
src/shared/Database/Field.h
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@ -34,11 +34,10 @@ class Field
DB_TYPE_BOOL = 0x04
};
Field();
Field(Field &f);
Field(const char *value, enum DataTypes type);
Field() : mValue(NULL), mType(DB_TYPE_UNKNOWN) {}
Field(const char *value, enum DataTypes type) : mType(type) { mValue = const_cast<char * >(value); }
~Field();
~Field() {}
enum DataTypes GetType() const { return mType; }
bool IsNULL() const { return mValue == NULL; }
@ -68,10 +67,14 @@ class Field
}
void SetType(enum DataTypes type) { mType = type; }
void SetValue(const char *value);
//no need for memory allocations to store resultset field strings
//all we need is to cache pointers returned by different DBMS APIs
void SetValue(const char *value) { mValue = const_cast<char * >(value); };
private:
Field(Field &f);
Field& operator=(const Field& );
char *mValue;
enum DataTypes mType;
};