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  • Data Engineering Streaming H2L
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  1. Abstract
  2. Supported Versions
  3. How to Use Topic Patterns in MapRStreams Data Objects

How to Use Topic Patterns in MapRStreams Data Objects

How to Use Topic Patterns in MapRStreams Data Objects

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Creating MapRStreams Data Objects

Creating MapRStreams Data Objects

Create a MapRStreams data object in Developer tool to add to streaming mappings.
  1. Select a project or folder in the
    Object Explorer
     view in the Developer tool.
  2. Click
    File
    New
    Data Object
    .
  3. Select
    MapRStreams
     and click
    Next
    .
    The data object dialog box appears.
  4. Enter a name for the data object.
  5. Click
    Browse
     next to the
    Location
     option and select the target project or folder.
  6. Click
    Browse
     next to the
    Connection
     option and select the MapRStreams connection.
  7. To add a resource, click
    Add
     next to the
    Selected Resources
     option.
    The
    Add Resource
     dialog box appears.
  8. To specify a topic pattern for the topic name, in the
    Add Resource
     dialog box, select
    TopicPattern
    .
  9. Specify a regular expression pattern for the topic name that you want to read from. Use the regular expression syntax guidelines to specify the pattern.
    The following image shows the
    cdc_.*
     topic pattern:
    To verify the topics that match the
    cdc_.*
     topic pattern, select
    Topic
    .
    The following image shows the topic names that match the
    cdc_.*
     pattern:
  10. Select the topic pattern that you want to add and click
    OK
    .
    The following image shows the cdc_.* topic pattern selected:
  11. Click
    Finish
    .
    The data object appears under Data Objects in the project or folder in the
    Object Explorer
     view.
    You can create a read data object operation to add in streaming mappings.
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