set_value_at
Description:
[ Version ( since = "4.2.6" ) ]
public bool set_value_at (string? value, string path) throws Error
Set the value for the node at the path formed using path_format
and the ... ellipse (the rules are the same as for
to_string).
Note that trying to set a value for a path which is not used by the current provider, such as "/TABLE_OPTIONS_P/TABLE_ENGINE" for a PostgreSQL connection (this option is only supported for MySQL), will <emphasis>not</emphasis> generate any error; this allows one to give values to a superset of the parameters and thus use the same code for several providers.
Here are the possible formats of path_format
: <itemizedlist> <listitem><para>If the path corresponds to a
Holder, then the parameter is set to <![CDATA["value
"]]></para>
</listitem> <listitem><para>If the path corresponds to a sequence item like for example "/SEQUENCE_NAME/5/NAME" for the
"NAME" value of the 6th item of the "SEQUENCE_NAME" sequence then: <itemizedlist> <listitem><para>if the sequence already
has 6 or more items, then the value is just set to the corresponding value in the 6th item of the sequence</para></listitem> <
listitem><para>if the sequence has less then 6 items, then items are added up to the 6th one before setting the value to the
corresponding in the 6th item of the sequence</para></listitem> </itemizedlist> </para></listitem> <listitem
><para>If the path corresponds to a DataModel, like for example
"/ARRAY/@COLUMN
/5" for the value at the 6th row of the "COLUMN" column of the "ARRAY" data model, then: <itemizedlist>
<listitem><para>if the data model already contains 6 or more rows, then the value is just set</para></listitem> <
listitem><para>if the data model has less than 6 rows, then rows are added up to the 6th one before setting the value</para><
/listitem> </itemizedlist> </para></listitem> </itemizedlist>
Parameters:
this |
a ServerOperation object |
value |
a string |
path |
a complete path to a node (starting with "/") |
Returns:
true if no error occurred |