| GNOME Data Access 3.0 manual | ||||
|---|---|---|---|---|
GdaDataModelHashGdaDataModelHash — An implementation of GdaDataModel based on a hash table |
GdaDataModelHash;
GdaDataModelHashClass;
GdaDataModelHashPrivate;
GdaDataModel* gda_data_model_hash_new (gint cols);
void gda_data_model_hash_insert_row (GdaDataModelHash *model,
gint rownum,
GdaRow *row);
void gda_data_model_hash_set_n_columns (GdaDataModelHash *model,
gint cols);
void gda_data_model_hash_clear (GdaDataModelHash *model);
Unlike GdaDataModelArray, this data model implementation stores the GdaRow in a hash table. So it only retrieves from the database backend exactly the requested rows (while in GdaDataModelArray you have to retrieve all the rows until the one requested).
GdaDataModel* gda_data_model_hash_new (gint cols);
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number of columns for rows in this data model. |
Returns : |
a pointer to the newly created GdaDataModel. |
void gda_data_model_hash_insert_row (GdaDataModelHash *model, gint rownum, GdaRow *row);
Inserts a row in the model.
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the GdaDataModelHash which is gonna hold the row. |
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the number of the row. |
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the row to insert. The model is responsible for freeing it with g_object_unref().
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void gda_data_model_hash_set_n_columns (GdaDataModelHash *model, gint cols);
Sets the number of columns for rows inserted in this model.
cols must be greater than or equal to 0.
Also clears model's contents.
This function calls gda_data_model_hash_clear to free the existing rows if any.
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the GdaDataModelHash. |
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the number of columns for rows inserted in model.
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void gda_data_model_hash_clear (GdaDataModelHash *model);
Frees all the rows inserted in model.
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the model to clear. |