ExpTransformation (Java Mapping API framework)

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com.informatica.powercenter.sdk.mapfwk.core
Class ExpTransformation

java.lang.Object
  com.informatica.powercenter.sdk.mapfwk.core.Table
      com.informatica.powercenter.sdk.mapfwk.core.Transformation
          com.informatica.powercenter.sdk.mapfwk.core.ExpTransformation

All Implemented Interfaces:: Transform

public class ExpTransformation
extends Transformation
extends Transformation

Class to provide the Expression Transformation functionality. This class extends the base Transformation class.

Expression transformation is used to calculate values in a single row before writing to the target. The expression has to be set in the output port. For this use TransformationField. The return value for the output port needs to match the return value of the expression.

The code snippet for Expression Transformation is given below

    
          //create an Expression Transformation using the constructor given below: 
          Mapping mapping = ...; // mapping to which the transform should be added
          Vector vInputSets = ...; // collection of InputSet objects
          Vector vTransformFields = ...; // collection of TransformField objects
          TransformationProperties props = ...; // properties           
          ExpressionTransformation expTrans = new ExpressionTransformation( "ExpTrans", "ExpTrans", 
                                                  "This is expression transformation", "ExpTrans", 
                                                  mapping, vInputSets, vTransformFields, props );
          
          //apply the transformation
          OutputSet outputSet = expTransform.apply();
          
          //get the first rowset as Aggregate always returns a RowSet
          RowSet outRowSet = (RowSet)outputSet.getRowSets().get(0);

Field Summary

Fields inherited from class com.informatica.powercenter.sdk.mapfwk.core.Transformation
`m_templateID, m_templateName, m_transformFieldAttr, sessionTransformInst`

Fields inherited from class com.informatica.powercenter.sdk.mapfwk.core.Table
`m_bReusable, m_readOnly`

Constructor Summary
`ExpTransformation()` Default constructor
`ExpTransformation(java.lang.String name, java.lang.String busName, java.lang.String desc, java.lang.String instName)` Initialize the object with name, business name, description and instance name
`ExpTransformation(java.lang.String name, java.lang.String busName, java.lang.String desc, java.lang.String instName, Mapping mapping, java.util.Vector vInputSets, java.util.Vector vTransformFields, TransformationProperties props)` Constructor for Expression Transformation

Method Summary
`OutputSet`	`apply()` Apply the Transformation.

Methods inherited from class com.informatica.powercenter.sdk.mapfwk.core.Transformation
add, addInitProp, defaultDuplicateNameRemovalSchema, genOutputSet, getGroupSet, getInitProps, getMapping, getOutFields, getOutputSet, getProperties, getSessionTransformInstanceKeySet, getSessionTransformInstanceProperty, getTemplateID, getTemplateName, getTransContext, getTransformationFieldAttr, getTransformationType, getTransformGroup, setGroupSet, setGroupSet, setMapping, setOutFields, setOutputSet, setReusable, setSessionTransformInstanceProperty, setTemplateIDAndName, setTransContext, setTransformationFieldAttr, setTransformationType, setTransformGroup, standardizeString

Methods inherited from class com.informatica.powercenter.sdk.mapfwk.core.Transformation

add, addInitProp, defaultDuplicateNameRemovalSchema, genOutputSet, getGroupSet, getInitProps, getMapping, getOutFields, getOutputSet, getProperties, getSessionTransformInstanceKeySet, getSessionTransformInstanceProperty, getTemplateID, getTemplateName, getTransContext, getTransformationFieldAttr, getTransformationType, getTransformGroup, setGroupSet, setGroupSet, setMapping, setOutFields, setOutputSet, setReusable, setSessionTransformInstanceProperty, setTemplateIDAndName, setTransContext, setTransformationFieldAttr, setTransformationType, setTransformGroup, standardizeString

Methods inherited from class com.informatica.powercenter.sdk.mapfwk.core.Table
`addField, addMetaExtension, getBusinessName, getDescription, getField, getFields, getInstanceName, getMetaExtensions, getName, getReferencedField, isReadOnly, isReusable, removeField, removeMetaExtension, setBusinessName, setDescription, setFields, setInstanceName, setMetaExtensions, setMetaExtensionValue, setName, setReadOnly`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail