ddsf:public:guidebook:06_append:glossary:d:data_reader
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ddsf:public:guidebook:06_append:glossary:d:data_reader [2020/06/04 17:36] admin ↷ Page moved from ddsf:private:cookbook:glossary:d:data_reader to ddsf:private:cookbook:2_body:d:data_reader |
ddsf:public:guidebook:06_append:glossary:d:data_reader [2021/07/14 16:37] (current) murphy ↷ Links adapted because of a move operation |
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| ==== Data Reader ==== | ==== Data Reader ==== | ||
| - | An entity attached to a Subscriber, used to subscribe to a Topic, | + | [[ddsf:public:guidebook:06_append:glossary:start| Return to Glossary ]] |
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| + | An [[ddsf:public:guidebook:06_append:glossary:e:entity|entity]] attached to a [[ddsf:public:guidebook:06_append:glossary:s:subscriber|Subscriber]], used to subscribe to a [[ddsf:public:guidebook:06_append:glossary:t:topic|Topic]], | ||
| providing type-safe operations to read/receive data. | providing type-safe operations to read/receive data. | ||
| Each Data Reader can be associated to only one Topic and therefore | Each Data Reader can be associated to only one Topic and therefore | ||
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| Reader. A data reader can obtain its subscribed data via two approaches: | Reader. A data reader can obtain its subscribed data via two approaches: | ||
| - | * Listener-based approach, provides an asynchronous mechanism to obtain data via call-backs in a separate thread that does not block the main application. | + | * [[ddsf:public:guidebook:06_append:glossary:l:listener|Listener]]-based approach, provides an asynchronous mechanism to obtain data via call-backs in a separate thread that does not block the main application. |
| - | * WaitSet-based Approach – A synchronous approach, blocks the current thread until one or more conditions attached to the WaitSet are met, at which point a list of active_conditions are returned. | + | * WaitSet-based Approach – A synchronous approach, blocks the current thread until one or more conditions attached to the [[ddsf:public:guidebook:06_append:glossary:w:waitset|WaitSet]] are met, at which point a list of active_conditions are returned. |
| There are several ways samples can be read using a data reader, | There are several ways samples can be read using a data reader, | ||
ddsf/public/guidebook/06_append/glossary/d/data_reader.1591306564.txt.gz · Last modified: 2020/06/04 17:36 by admin
