AggregateTransformation (Java Mapping API framework)

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

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

All Implemented Interfaces:: Transform

public class AggregateTransformation
extends Transformation
extends Transformation

The class AggregateTransformation extends Transformation .

The Aggregator transformation allows you to perform aggregate calculations, such as averages and sums.The Aggregator transformation is unlike the Expression transformation, in that you can use the Aggregator transformation to perform calculations on groups. The AggregateTransformation can have GroupBy port. The user has to give the Aggregate expression only in the Aggregator transformation.

The code snippet for the AggregateTransformation is given below

   
            //create an Aggregation 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
            String[] groupBy = ...; // group by criteria
            TransformationProperties props = ...; // properties           
            AggregationTransformation aggTrans = new AggregateTransformation( "AggTrans", "AggTrans", 
                                                    "This is aggregate transformation", "AggTrans", 
                                                    mapping, vInputSets, vTransformFields, groupBy, props );
                
            //apply the transformation
                OutputSet outputSet = aggTrans.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
`AggregateTransformation()` Default constructor
`AggregateTransformation(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
`AggregateTransformation(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, java.lang.String[] groupBy, TransformationProperties props)` Constructor for Aggregate 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