Class AggregatorFunctionFactory

  extended by<AggregatorFunction>
      extended by

public class AggregatorFunctionFactory
extends AbstractFactory<AggregatorFunction>

Field Summary
static boolean isInitialized
Fields inherited from class
map, properties
Constructor Summary
Method Summary
 AggregatorFunction create(Properties props)
          Create the given object using the settings in the Properties object.
 AggregatorFunction create(java.lang.String name)
 AggregatorFunction create(java.lang.String name, Properties parameters)
 Parameter getClassParameter()
          Return the parameter containing the name of the default type produced by this object.
static void initialization()
static AggregatorFunctionFactory newInstance()
Methods inherited from class
addDefaultProperty, addType, check, check, getKnownTypes, getParameter, getParameter, setDefaultProperty
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail


public static boolean isInitialized
Constructor Detail


public AggregatorFunctionFactory()
Method Detail


public static AggregatorFunctionFactory newInstance()


public static void initialization()


public AggregatorFunction create(java.lang.String name)


public AggregatorFunction create(java.lang.String name,
                                 Properties parameters)


public AggregatorFunction create(Properties props)
Description copied from class: AbstractFactory
Create the given object using the settings in the Properties object. This function is the only global creation object, but each factory should also define a more user-friendly version consisting of a set of commonly used creation parameters as well as a version combining commonly used features with a Properties object. The property may be null. if the creation fails, the factory should log to the Logger the explanation and return null. If at all possible, the factory should provide a reasonable fail-over value rather than return null.

Specified by:
create in class AbstractFactory<AggregatorFunction>
props - parameters used to control the factory.
newly created object or null


public Parameter getClassParameter()
Description copied from class: AbstractFactory
Return the parameter containing the name of the default type produced by this object. The parameter will have exactly one value of type String. The type name of this parameter is the type that controls which class of object is produced.

Specified by:
getClassParameter in class AbstractFactory<AggregatorFunction>
parameter containing the default type.

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