tranger2_write_topic_cols()

The tranger2_write_topic_cols() function updates the column definitions of a specified topic in the TimeRanger database.

C

Prototype

int tranger2_write_topic_cols(
    json_t  *tranger,
    const char  *topic_name,
    json_t  *jn_cols  // owned
);

Parameters

Key	Type	Description
tranger	json_t *	A pointer to the TimeRanger database instance.
topic_name	const char *	The name of the topic whose column definitions are being updated.
jn_cols	json_t *	A JSON object containing the new column definitions. The ownership of this object is transferred to tranger2_write_topic_cols().

---

Return Value

Returns 0 on success, or a negative error code on failure.

Notes

This function modifies the column definitions of an existing topic. Ensure that the topic exists before calling tranger2_write_topic_cols().

JS

Prototype

// Not applicable in JS

Python

Prototype

# Not applicable in Python

Examples

C

// TODO C examples

JS

// TODO JS examples

Python

# TODO Python examples