org.gvsig.fmap.dal.feature.spi

Interface FeatureSetProvider

All Superinterfaces:

Disposable

All Known Implementing Classes:

AbstractFeatureSetProvider, DBFSetProvider, GPESetProvider, IndexFeatureSet, JDBCSetProvider, JDBCSetProvider, MemoryFeatureSet, OGRFetureSetProvider

public interface FeatureSetProvider
extends Disposable

Interface for set of feature based data providers

Method Summary

Modifier and Type	Method and Description
boolean	canFilter()
boolean	canIterateFromIndex()
boolean	canOrder()
DisposableIterator	fastIterator() Returns an iterator over the elements in this set, in the order (if any) defined when the collection was obtained.
DisposableIterator	fastIterator(long index, long elements) Returns an iterator over the elements in this set, in the order (if any) defined when the collection was obtained.
long	getSize()
boolean	isEmpty()
DisposableIterator	iterator() Deprecated. use fastIterator() instead
DisposableIterator	iterator(long index, long elements) Deprecated. use fastIterator() instead

Methods inherited from interface org.gvsig.tools.dispose.Disposable

dispose

Method Detail

canFilter

boolean canFilter()

canOrder

boolean canOrder()

canIterateFromIndex

boolean canIterateFromIndex()

getSize

long getSize()
      throws DataException

Throws:

DataException

isEmpty

boolean isEmpty()
         throws DataException

Throws:

DataException

iterator

DisposableIterator iterator()
                     throws DataException

Deprecated. use fastIterator() instead

Returns an iterator over the elements in this set, in the order (if any) defined when the collection was obtained.

Fast in this case means that each of the elements returned may be a reused or pooled object instance, so don't use it to be stored in any way.

If you need to store one of the FeatureProvider of the iterator, use the FeatureProvider.getCopy() to create a clone of the object.

Returns:

an iterator of the elements in this collection (in proper sequence).

Throws:

DataException - if there is an error getting the iterator

iterator

DisposableIterator iterator(long index,
                            long elements)
                     throws DataException

Deprecated. use fastIterator() instead

Returns an iterator over the elements in this set, in the order (if any) defined when the collection was obtained.

Fast in this case means that each of the elements returned may be a reused or pooled object instance, so don't use it to be stored in any way.

If you need to store one of the FeatureProvider of the iterator, use the FeatureProvider.getCopy() to create a clone of the object.

Parameters:

index - index of first element to be returned from the iterator (by a call to the next method).

elements -

Returns:

an iterator of the elements in this collection (in proper sequence).

Throws:

DataException - if there is an error getting the iterator

fastIterator

DisposableIterator fastIterator()
                         throws DataException

Returns an iterator over the elements in this set, in the order (if any) defined when the collection was obtained.

Returns:

an iterator of the elements in this collection (in proper sequence).

Throws:

DataException - if there is an error getting the iterator

See Also:

fastIterator(), #fastIterator(long)

fastIterator

DisposableIterator fastIterator(long index,
                                long elements)
                         throws DataException

Returns an iterator over the elements in this set, in the order (if any) defined when the collection was obtained.

Parameters:

elements -

index - index of first element to be returned from the iterator (by a call to the next method).

Returns:

an iterator of the elements in this collection (in proper sequence).

Throws:

DataException - if there is an error getting the iterator

See Also:

fastIterator(), #fastIterator(long)