Package com.orchestranetworks.addon.dex.transformation

Classes and interfaces to call {addon.label} transformation functions for the import, export and transfer data services.


Creating a transformation function for data transfer, and import and export of XML, Excel, and CSV

  1. As shown below, you must define a custom transformation function before adding it to your TransformationCatalog:

    public final class ConvertNumberDefinition implements TransformationDefinition
    {
            public String getCode()
            {
                    return "TEST";
            }
    
            public UserMessage getLabel()
            {
                    return UserMessage.createInfo("Convert number to string number with new API");
            }
    
            public UserMessage getDescription()
            {
                    return UserMessage.createInfo("Convert number to string number with new API");
            }
    
            public List<InputDefinition> getInputDefinitions()
            {
                    List<InputDefinition> inputDefinitions = new ArrayList<InputDefinition>();
                    inputDefinitions.add(
                            new InputDefinition(
                                    "Input string",
                                    UserMessage.createInfo("Input number has Integer data type."),
                                    SchemaTypeName.XS_STRING,
                                    false));
                    return inputDefinitions;
            }
    
            public OutputDefinition getOutputDefinition()
            {
                    return new OutputDefinition(
                            UserMessage.createInfo("Formats the integer input as a string."),
                            SchemaTypeName.XS_STRING,
                            false);
            }
    
            public List<ParameterDefinition> getParameterDefinitions()
            {
                    return new ArrayList<ParameterDefinition>();
            }
    
            public Transformation getTransformation(ServiceType serviceType)
            {
                    switch (serviceType)
                    {
                            case XML_IMPORT:
                            case SPREADSHEET_IMPORT:
                            case CSV_IMPORT:
                                    return new ConvertNumberForImport();
                            case XML_EXPORT:
                            case SPREADSHEET_EXPORT:
                            case CSV_EXPORT:
                                    return new ConvertNumberForExport();
                            case TRANSFER:
                                    return new ConvertNumberForTransfer();
                            default:
                                    return null;
                    }
            }
    
            public boolean isBidirectional()
            {
                    return false;
            }
    
            public boolean isAggregation()
            {
                    return false;
            }
    
    }
    
  2. Create the implementation definition.

    • The following example can be used for importing XML, Excel, and CSV:

      public final class ConvertNumberForImport
              implements Transformation<ImportTransformationExecutionContext>
      {
              private Locale locale;
              public void setup(TransformationConfigurationContext configurationContext)
                      throws DataExchangeException
              {
                      if (configurationContext == null)
                      {
                              throw new DataExchangeException(UserMessage.createError("Context is not initialized."));
                      }
                      this.locale = configurationContext.getSession().getLocale();
              }
      
              public Object execute(ImportTransformationExecutionContext executionContext)
                      throws DataExchangeException
              {
                      if (executionContext == null)
                      {
                              throw new DataExchangeException(UserMessage.createError("Context is not initialized."));
                      }
      
                      Object inputValue = executionContext.getInputValue();
                      if (inputValue == null)
                      {
                              return null;
                      }
                      
                      SchemaNode schemaNode = null;
                      if (EBXField.class.isInstance(executionContext.getTargetField()))
                      {
                              EBXField ebxField = (EBXField) executionContext.getTargetField();
                              schemaNode = ebxField.getSchemaNode();
      
                              if (schemaNode.isComplex())
                              {
                                      throw new DataExchangeException(
                                              UserMessage.createError(
                                                      schemaNode.getLabel(this.locale)
                                                              + " is a complex type node. The transformation function 'Convert an integer to a string and vice versa' only supports simple type node."));
                              }
                      }
      
                      try
                      {
                              if (Integer.class.isInstance(inputValue))
                              {
                                      return schemaNode.formatToXsString(inputValue);
                              }
      
                              if (String.class.isInstance(inputValue))
                              {
                                      String tmpValue = String.valueOf(inputValue);
                                      if (tmpValue == null)
                                      {
                                              return null;
                                      }
                                      return schemaNode.parseXsString(tmpValue);
                              }
      
                              throw new DataExchangeException(UserMessage.createError("Invalid input data."));
                      }
                      catch (ClassCastException ex)
                      {
                              throw new DataExchangeException(ex);
                      }
                      catch (ConversionException ex)
                      {
                              throw new DataExchangeException(ex);
                      }
                      catch (Exception ex)
                      {
                              throw new DataExchangeException(ex);
                      }
              }
      }
      
    • The following example shows XML, Excel and CSV export:

      public final class ConvertNumberForExport
              implements Transformation<ExportTransformationExecutionContext>
      {
              private Locale locale;
              public void setup(TransformationConfigurationContext configurationContext)
                      throws DataExchangeException
              {
                      if (configurationContext == null)
                      {
                              throw new DataExchangeException(UserMessage.createError("Context is not initialized."));
                      }
                      this.locale = configurationContext.getSession().getLocale();
              }
      
              public Object execute(ExportTransformationExecutionContext executionContext)
                      throws DataExchangeException
              {
                      if (executionContext == null)
                      {
                              throw new DataExchangeException(UserMessage.createError("Context is not initialized."));
                      }
      
                      Object inputValue = executionContext.getInputValue();
                      if (inputValue == null)
                      {
                              return null;
                      }
                      
                      SchemaNode schemaNode = null;
                      if (EBXField.class.isInstance(executionContext.getSourceField()))
                      {
                              EBXField ebxField = (EBXField) executionContext.getSourceField();
                              schemaNode = ebxField.getSchemaNode();
      
                              if (schemaNode.isComplex())
                              {
                                      throw new DataExchangeException(
                                              UserMessage.createError(
                                                      schemaNode.getLabel(this.locale)
                                                              + " is a complex type node. The transformation function 'Convert an integer to a string and vice versa' only supports simple type node."));
                              }
                      }
      
                      try
                      {
                              if (Integer.class.isInstance(inputValue))
                              {
                                      return schemaNode.formatToXsString(inputValue);
                              }
      
                              if (String.class.isInstance(inputValue))
                              {
                                      String tmpValue = String.valueOf(inputValue);
                                      if (tmpValue == null)
                                      {
                                              return null;
                                      }
                                      return schemaNode.parseXsString(tmpValue);
                              }
      
                              throw new DataExchangeException(UserMessage.createError("Invalid input data."));
                      }
                      catch (ClassCastException ex)
                      {
                              throw new DataExchangeException(ex);
                      }
                      catch (ConversionException ex)
                      {
                              throw new DataExchangeException(ex);
                      }
                      catch (Exception ex)
                      {
                              throw new DataExchangeException(ex);
                      }
              }
      }
      
    • Example of data transfer:

      public final class ConvertNumberForTransfer
              implements Transformation<TransferTransformationExecutionContext>
      {
              private Locale locale;
              public void setup(TransformationConfigurationContext configurationContext)
                      throws DataExchangeException
              {
                      if (configurationContext == null)
                      {
                              throw new DataExchangeException(UserMessage.createError("Context is not initialized."));
                      }
                      this.locale = configurationContext.getSession().getLocale();
              }
      
              public Object execute(TransferTransformationExecutionContext executionContext)
                      throws DataExchangeException
              {
                      if (executionContext == null)
                      {
                              throw new DataExchangeException(UserMessage.createError("Context is not initialized."));
                      }
      
                      Object inputValue = executionContext.getInputValue();
                      if (inputValue == null)
                      {
                              return null;
                      }
                      
                      SchemaNode schemaNode = null;
                      if (EBXField.class.isInstance(executionContext.getSourceField()))
                      {
                              EBXField ebxField = executionContext.getSourceField();
                              schemaNode = ebxField.getSchemaNode();
      
                              if (schemaNode.isComplex())
                              {
                                      throw new DataExchangeException(
                                              UserMessage.createError(
                                                      schemaNode.getLabel(this.locale)
                                                              + " is a complex type node. The transformation function 'Convert an integer to a string and vice versa' only supports simple type node."));
                              }
                      }
      
                      try
                      {
                              if (Integer.class.isInstance(inputValue))
                              {
                                      return schemaNode.formatToXsString(inputValue);
                              }
      
                              if (String.class.isInstance(inputValue))
                              {
                                      String tmpValue = String.valueOf(inputValue);
                                      if (tmpValue == null)
                                      {
                                              return null;
                                      }
                                      return schemaNode.parseXsString(tmpValue);
                              }
      
                              throw new DataExchangeException(UserMessage.createError("Invalid input data."));
                      }
                      catch (ClassCastException ex)
                      {
                              throw new DataExchangeException(ex);
                      }
                      catch (ConversionException ex)
                      {
                              throw new DataExchangeException(ex);
                      }
                      catch (Exception ex)
                      {
                              throw new DataExchangeException(ex);
                      }
              }
      }
      
  3. Register the transformation function with the add-on via the catalog so that it can be used in the configuration:

            TransformationCatalog.add(new ConvertNumberDefinition());
    

Creating an aggregation transformation function

To create an aggregation transformation function:

  1. Create the custom aggregation transformation function definition.

    public class AggregationDefinitionTest implements TransformationDefinition
    {
            public String getCode()
            {
                    return "AGGREGATION_DEFINITION_TEST";
            }
            
            public UserMessage getLabel()
            {
                    return UserMessage.createInfo("Aggregate of integer numbers");
            }
            
            public UserMessage getDescription()
            {
                    return UserMessage.createInfo("The sum of the input integers");
            }
            
            public List<InputDefinition> getInputDefinitions()
            {
                    List<InputDefinition> inputDefinitions = new ArrayList<InputDefinition>();
                    inputDefinitions.add(new InputDefinition(
                            "Source field values",
                            UserMessage.createInfo("List of input integers to calculate."),
                            SchemaTypeName.XS_INT,
                            true));
                    return inputDefinitions;
            }
            
            public OutputDefinition getOutputDefinition()
            {
                    return new OutputDefinition(
                            UserMessage.createInfo("The sum of the input integers."),
                            SchemaTypeName.XS_INT,
                            false);
            }
    
            public List<ParameterDefinition> getParameterDefinitions()
            {
                    return new ArrayList<ParameterDefinition>();
            }
            
            public Transformation getTransformation(ServiceType serviceType)
            {
                    return new AggregationTransformationTest();
            }
            
            public boolean isBidirectional()
            {
                    return false;
            }
            
            public boolean isAggregation()
            {
                    return true;
            }
    }
    
  2. Create the implementation definition:

    public class AggregationTransformationTest implements AggregationTransformation
    {
            private Locale locale;
            public void setup(TransformationConfigurationContext configurationContext)
                    throws DataExchangeException
            {
                    if (configurationContext == null)
                    {
                            throw new DataExchangeException(UserMessage.createError("Context is not initialized."));
                    }
                    this.locale = configurationContext.getSession().getLocale();
            }
            
            public Object execute(AggregationTransformationExecutionContext executionContext)
                            throws DataExchangeException
            {
                    if (executionContext == null)
                    {
                            throw new DataExchangeException(UserMessage.createError("Context is not initialized."));
                    }
                    
                    if (EBXField.class.isInstance(executionContext.getTargetField()))
                    {
                            EBXField ebxField = (EBXField) executionContext.getTargetField();
    
                            if (ebxField.getSchemaNode().isComplex())
                            {
                                    throw new DataExchangeException(
                                            UserMessage.createError(
                                                    ebxField.getSchemaNode().getLabel(this.locale)
                                                            + " is a complex type node. The transformation function 'Aggregate of integer numbers' only supports simple type node."));
                            }
                    }
            
                    List<AggregationTransformationExecutionValue> inputs = executionContext.getInputValues();
                    if (inputs == null || inputs.isEmpty())
                    {
                            return inputs;
                    }
            
                    int sumOfInput = 0;
                    boolean isEmpty = true;
                    for (AggregationTransformationExecutionValue executeValue : inputs)
                    {
                            if (executeValue == null)
                            {
                                    continue;
                            }
                            if (executeValue.getField() != null)
                            {
                                    if (EBXField.class.isInstance(executeValue.getField()))
                                    {
                                            EBXField inputEBXField = (EBXField) executeValue.getField();
                                            
                                            if (inputEBXField.getSchemaNode().isComplex())
                                            {
                                                    throw new DataExchangeException(
                                                            UserMessage.createError(
                                                                    inputEBXField.getSchemaNode().getLabel(this.locale)
                                                                            + " is a complex type node. The transformation function 'Aggregate of integer numbers' only supports simple type node."));
                                            }
                                    }
                            }
                            
                            Object input = executeValue.getValue();
                            if(input == null || AddonStringUtils.isEmpty(input.toString()))
                            {
                                    continue;
                            }
            
                            if (List.class.isInstance(input))
                            {
                                    List<Object> objects = (List<Object>) input;
                                    for (Object object : objects)
                                    {
                                            if (object == null || AddonStringUtils.isEmpty(object.toString()))
                                            {
                                                    continue;
                                            }
                                            sumOfInput += this.sumOfInput(object);
                                            isEmpty = false;
                                    }
                                    continue;
                            }
                            sumOfInput += this.sumOfInput(input);
                            isEmpty = false;
                    }
                    
                    if(isEmpty)
                    {
                            return null;
                    }
                    return Integer.valueOf(sumOfInput);
            }
            
            private int sumOfInput(Object inputValue) throws DataExchangeException
            {
                    if (Integer.class.isInstance(inputValue))
                    {
                            return ((Integer) inputValue).intValue();
                    }
            
                    try
                    {
                            return Integer.valueOf((String) inputValue).intValue();
                    }
                    catch (Exception ex)
                    {
                            throw new DataExchangeException(UserMessage.createError("Invalid input data."));
                    }
            }
    }
    
  3. Register the aggregation transformation function with the add-on via the catalog so that it will be available to use in the configuration:

            TransformationCatalog.add(new AggregationDefinitionTest());