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  • Data Integration Connectors H2L
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Table of Contents

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  1. Abstract
  2. Supported Versions
  3. Reading a JSON File Using an Amazon S3 V2 Connector

Reading a JSON File Using an Amazon S3 V2 Connector

Reading a JSON File Using an Amazon S3 V2 Connector

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Creating an Amazon S3 V2 Mapping to Read a JSON File

Creating an Amazon S3 V2 Mapping to Read a JSON File

Add the Hierarchy Parser and Java transformations in an Amazon S3 mapping to read a JSON file.
  1. In
    Data Integration
    , click
    New
    Mappings
    Create
     .
    The
    New Mapping
     dialog box appears.
  2. Enter a name, location, and description for the mapping.
  3. On the Source transformation, specify a name and description in the general properties.
  4. On the
    Source
     tab, perform the following steps to provide the source details to read data from an Amazon S3 source:
    1. In the
      Connection
       field, select the
      Amazon S3 V2
       connection.
    2. In the
      Source Type
       field, select
      Single
       object.
    3. In the
      Object
       field, select the source object of the JSON file.
      By default, the format type of a JSON file is binary.
    4. In the
      Formatting Options
       field, set the value to
      None
      .
  5. Add a Java transformation.
  6. Click
    Java
    .
    The
    Java Editor
     tab appears.
  7. Click
    Inputs
    .
    The
    Inputs
     tab appears.
  8. Add the following code to import the required Java packages in the
    Import Packages
     section: 
    import java.nio.charset.StandardCharsets;
  9. Add the following code to convert the data of binary format into string format in the
    On Input Row
     section: 
    <variable_name>= new String(data, StandardCharsets.UTF_8);
generateRow();
    For example, 
    out_string= new String(data, StandardCharsets.UTF_8);
generateRow();
  10. Click
    Outputs
    .
    The
    Outputs
     tab appears.
  11. Click
    + Create a New Field
    .
    The
    New Field
     dialog box appears.
  12. In the
    New Field
     dialog box, define the variable names that you added in the
    On Input Row
     section.
    For example, define the
    out_string
     variable name.
    The following image shows an example of the
    New Field
     dialog box:
  13. Click
    OK
    .
  14. In the
    Runtime Environment
     field, select the Secure Agent that you want to use and click
    Compile
    .
    The compilation successful message is displayed.
  15. Add a Hierarchy Parser transformation.
  16. Map the input ports from the Java transformation to the Hierarchy Parser transformation.
  17. Click on the Hierarchy Parser transformation.
  18. In the
    Incoming Fields
     tab, perform the following steps:
    1. Click the
      +
       add icon and select
      Delete Rule
       to delete any existing rules.
    2. Click the
      +
       add icon to add a new rule.
    3. Click
      Configure
      .
      The
      Configure Field Rules
       dialog box appears.
    4. In the
      Rule Details
       tab, select only the output strings.
      For example,
      out_string
      .
    5. Click
      OK
      .
  19. In the
    Input Settings
     tab, select the
    Input Type
     as
    Buffer
     and select an existing or create a new hierarchical schema.
  20. Map the input ports from the Java transformation to the Hierarchy Parser transformation.
  21. In the
    Input Field Selection
     tab, map the incoming fields to the hierarchical schema input fields.
  22. In the
    Field Mapping
     tab, expand the element name and click
    Map all descendants
    .
  23. Map the Hierarchy Parser transformation to the target.
    The
    Select Output Group
     dialog box appears.
  24. Select the required output group and click
    OK
    .
  25. Click
    Save
    Run
     to run the mapping.
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