com.davisor.data.stream
Class IteratorTypeStream

java.lang.Object
  com.davisor.data.VoidData
      com.davisor.data.stream.IteratorDataStream
          com.davisor.data.stream.IteratorTypeStream

All Implemented Interfaces:

Data, DataStream

public class IteratorTypeStream

extends IteratorDataStream

IteratorTypeStream represents an iterator data stream that enforces the common stream type over all the 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.IteratorDataStream

M_hasNext, M_index, M_iterator, M_metaData, M_nextData

Fields inherited from class com.davisor.data.VoidData

M_type

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

INITIAL_INDEX

Constructor Summary

IteratorTypeStream(java.util.Collection collection)
Creates a data stream out of a collection.

IteratorTypeStream(java.util.Collection collection, Type type)
Creates a data stream out of a collection and the given type.

IteratorTypeStream(java.util.Iterator iterator)
Creates a data stream out of an iterator.

IteratorTypeStream(java.util.Iterator iterator, Type type)
Creates a data stream out of an iterator 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.IteratorDataStream

close, getIndex, hasNext, init, next, toString

Methods inherited from class com.davisor.data.VoidData

equals, getType, hashCode, setType

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

IteratorTypeStream

public IteratorTypeStream(java.util.Collection collection)
                   throws InvalidDataException

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

Throws:

InvalidDataException - if the first element is not a DataValue

See Also:

IteratorTypeStream(Collection,Type), IteratorTypeStream(Iterator)

IteratorTypeStream

public IteratorTypeStream(java.util.Collection collection,
                          Type type)
                   throws InvalidDataException

Creates a data stream out of a collection and the given type.

Throws:

InvalidDataException - if the first element is not of the given type, and cannot be converted to a data object of that type

See Also:

IteratorTypeStream(Collection), IteratorTypeStream(Iterator,Type)

IteratorTypeStream

public IteratorTypeStream(java.util.Iterator iterator)
                   throws InvalidDataException

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

Throws:

InvalidDataException - if the first element is not a DataValue

See Also:

IteratorTypeStream(Collection), IteratorTypeStream(Iterator,Type)

IteratorTypeStream

public IteratorTypeStream(java.util.Iterator iterator,
                          Type type)
                   throws InvalidDataException

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

Throws:

InvalidDataException - if the first element is not of the given type, and cannot be converted to a data object of that type

See Also:

IteratorTypeStream(Collection,Type), IteratorTypeStream(Iterator)

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)