Method
SeagullStatementbind_object
Declaration [src]
gboolean
seagull_statement_bind_object (
SeagullStatement* statement,
const char* prefix,
GObject* obj,
GError** error
)
Description [src]
Binds an object to the query.
The parameters of the statement will be walked and if a property matching the name of a parameter is found, then the parameter will be bound to the value of that property.
If parameters have conflicting names, you can pass a prefix to make sure the correct ones are bound. Note that the prefix needs to look like a valid SQL column name, so no spaces or dashes. See the following example.
stmt = seagull_statement_new("INSERT INTO messages(id, author) "
"VALUES(:msg-id, :author-id)");
seagull_statement_bind_object(stmt, "msg_", message, &error);
seagull_statement_bind_object(stmt, "author_", author, &error);
This will look for properties named id on both the message and author instances.
Note that if a prefix is provided, it will be required for all parameters. See the following example
stmt = seagull_statement_new("INSERT INTO messages(id, author) "
"VALUES(:id, :author-id)");
// This bind doesn't match anything as there are no parameters with a msg-
// prefix.
seagull_statement_bind_object(stmt, "msg_", message, &error);
// By not using a prefix, the :id parameter will get match to message:id.
seagull_statement_bind_object(stmt, NULL, message, &error);
// Using a prefix with the author will only match the author-id parameter
// and leave the id parameter to the previously bound value.
seagull_statement_bind_object(stmt, "author_", author, &error);
Parameters
prefix-
Type:
const char*An optional prefix.
The argument can be NULL.The data is owned by the caller of the method. The value is a NUL terminated UTF-8 string. obj-
Type:
GObjectThe object.
The data is owned by the caller of the method. error-
Type:
GError **The return location for a recoverable error.
The argument can be NULL.If the return location is not NULL, then you must initialize it to aNULLGError*.The argument will be left initialized to NULLby the method if there are no errors.In case of error, the argument will be set to a newly allocated GError; the caller will take ownership of the data, and be responsible for freeing it.