com.davisor.data.stream
Class EnumeratorTypeStream

java.lang.Object
  com.davisor.data.VoidData
      com.davisor.data.stream.EnumeratorDataStream
          com.davisor.data.stream.EnumeratorTypeStream

All Implemented Interfaces:

Data, DataStream

public class EnumeratorTypeStream

extends EnumeratorDataStream

EnumeratorTypeStream represents an enumerator data stream that enforces the common stream type over all stream elements. In particular, all elements are converted to the stream type before they are returned. The original objects in the stream source are not changed.

Since:

JDK1.1

See Also:

getDataValue(java.lang.Object), EnumeratorTypeStream, Type

Field Summary

Fields inherited from class com.davisor.data.stream.EnumeratorDataStream

M_data, M_enumerator, M_index, M_metaData, M_next

Fields inherited from class com.davisor.data.VoidData

M_type

Fields inherited from interface com.davisor.data.stream.DataStream

INITIAL_INDEX

Constructor Summary

EnumeratorTypeStream(java.util.Enumeration enumerator)
Creates a data stream out of an enumerator.

EnumeratorTypeStream(java.util.Enumeration enumerator, Type type)
Creates a data stream out of an enumerator and the given type.

Method Summary

protected DataValue

getDataValue(java.lang.Object object) Makes a data value of the stream type.

Methods inherited from class com.davisor.data.stream.EnumeratorDataStream

close, getIndex, hasNext, next

Methods inherited from class com.davisor.data.VoidData

equals, getType, hashCode, setType, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.davisor.data.Data

getType

Constructor Detail

EnumeratorTypeStream

public EnumeratorTypeStream(java.util.Enumeration enumerator)
                     throws InvalidDataException

Creates a data stream out of an enumerator. The data stream type is taken from the first element in the enumerator

Throws:

InvalidDataException - if the first element is not a DataValue

See Also:

EnumeratorTypeStream(Enumeration,Type)

EnumeratorTypeStream

public EnumeratorTypeStream(java.util.Enumeration enumerator,
                            Type type)
                     throws InvalidDataException

Creates a data stream out of an enumerator and the given type.

Throws:

InvalidDataException - if the collection content does not satisfy the given type.

See Also:

EnumeratorTypeStream(Enumeration)

Method Detail

getDataValue

protected DataValue getDataValue(java.lang.Object object)
                          throws InvalidDataException

Makes a data value of the stream type.

Overrides:

getDataValue in class VoidData

Throws:

InvalidDataException - if the element could not be converted to the current type

See Also:

Type.toData(Object)