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GNOME Data Access 4.0 manual | |
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GdaDataModelArrayGdaDataModelArray — An implementation of GdaDataModel based on a GArray. |
GdaDataModelArray;
GdaDataModelArrayClass;
GdaDataModelArrayPrivate;
GdaDataModel* gda_data_model_array_new (gint cols);
GdaDataModel* gda_data_model_array_new_with_g_types
(gint cols,
...);
GdaDataModelArray* gda_data_model_array_copy_model (GdaDataModel *src,
GError **error);
GdaRow* gda_data_model_array_get_row (GdaDataModelArray *model,
gint row,
GError **error);
void gda_data_model_array_set_n_columns (GdaDataModelArray *model,
gint cols);
void gda_data_model_array_clear (GdaDataModelArray *model);
The GdaDataModelArray object is a data model which internally uses a GArray to index all its rows (represented as GdaRow objects). In this data model, all the data is stored in memory, which can be a memory limitation if the number of rows is huge.
This type of data model is easy to use to store some temporary data, and has a random access mode (any value can be accessed at any time without the need for an iterator).
typedef struct {
GObjectClass parent_class;
/* Padding for future expansion */
void (*_gda_reserved1) (void);
void (*_gda_reserved2) (void);
void (*_gda_reserved3) (void);
void (*_gda_reserved4) (void);
} GdaDataModelArrayClass;
GdaDataModel* gda_data_model_array_new (gint cols);
Creates a new GdaDataModel object without initializing the column
types. Using gda_data_model_array_new_with_g_types() is usually better.
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number of columns for rows in this data model. |
Returns : |
a pointer to the newly created GdaDataModel. |
GdaDataModel* gda_data_model_array_new_with_g_types (gint cols, ...);
Creates a new GdaDataModel object with the column types as specified.
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number of columns for rows in this data model. |
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types of the columns of the model to create as GType, as many as indicated by cols
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Returns : |
a pointer to the newly created GdaDataModel. |
GdaDataModelArray* gda_data_model_array_copy_model (GdaDataModel *src, GError **error);
Makes a copy of src into a new GdaDataModelArray object
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a GdaDataModel to copy data from |
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a place to store errors, or NULL
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Returns : |
a new data model, or NULL if an error occurred
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GdaRow* gda_data_model_array_get_row (GdaDataModelArray *model, gint row, GError **error);
Get a pointer to a row in model
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a GdaDataModelArray object |
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row number (starting from 0) |
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a place to store errors, or NULL
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Returns : |
the GdaRow, or NULL if an error occurred
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void gda_data_model_array_set_n_columns (GdaDataModelArray *model, gint cols);
Sets the number of columns for rows inserted in this model.
cols must be greated than or equal to 0.
Also clears model's contents.
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the GdaDataModelArray. |
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number of columns for rows this data model should use. |
void gda_data_model_array_clear (GdaDataModelArray *model);
Frees all the rows in model.
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the model to clear. |