CoreDX DDS Java Reference Manual
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ContentFilteredTopic provides a topic that may include data filtered from a related Topic. More...
Public Member Functions | |
| DomainParticipant | get_participant () |
| This operation returns the parent DomainParticipant of the ContentFilteredTopic. | |
| String | get_type_name () |
| This operation returns type_name of the ContentFilteredTopic. | |
| String | get_name () |
| This operation returns topic name of the ContentFilteredTopic. | |
| Topic | get_related_topic () |
| This returns the real Topic associated with the ContentFilteredTopic. More... | |
| Vector | get_expression_parameters () |
| This accesses the current set of parameters used by the ContentFilteredTopic. More... | |
| ReturnCode_t | set_expression_parameters (Vector filter_parameters) |
| This specifies a new set of parameters for use with the filter_expression. More... | |
ContentFilteredTopic provides a topic that may include data filtered from a related Topic.
| Vector get_expression_parameters | ( | ) |
This accesses the current set of parameters used by the ContentFilteredTopic.
The parameters String Sequence is populated with the current set of parameters.
| Topic get_related_topic | ( | ) |
This returns the real Topic associated with the ContentFilteredTopic.
That is, the Topic provided when the ContentFilteredTopic was created.
| ReturnCode_t set_expression_parameters | ( | Vector | filter_parameters | ) |
This specifies a new set of parameters for use with the filter_expression.
The filter_expression is an SQL like condition expression, and the parameters argument provides optional parameters that are referenced by the filter_expression. The syntax for refering to paramters in a filter_expression is the percent sign '' followed by a number. The number is the index of the paramter in the filter_paramters sequence. Parameters are counted starting at zero. So, "%0" refers to the first parameter, and "%4" refers to the fifth paramter. Using this syntax, the expression "x<%0" would test the value of 'x' against the first parameter in the sequence.
