Package org.geotools.imageio.netcdf.slice

Class NetCDFSliceProvider

Object

NetCDFSliceProvider

All Implemented Interfaces:

CoverageSlicesCatalog.SliceProvider

public class NetCDFSliceProvider
extends Object
implements CoverageSlicesCatalog.SliceProvider

A CoverageSlicesCatalog.SliceProvider implementation that exposes the slices of a single NetCDF variable as queryable catalog entries.

This class coordinates the full query-to-slice workflow. A Query is first translated into a NetCDFSliceQuery, which separates recognized dimension constraints from generic post-filters. Filter recognition is delegated to DimensionFilterSplitter, which in turn relies on a NetCDFPreFilterDimensionExtractor to identify filters targeting time, elevation, and additional NetCDF dimensions.

The resulting NetCDFSliceQuery is converted into a domain of selected dimension indices, and a NetCDFSliceIterator walks the matching tuples to build CoverageSlice instances. This allows recognized dimension predicates to be evaluated up front, while any residual filter is applied in memory as a post-filter during iteration.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final record	NetCDFSliceProvider.AdditionalDomainBinding	Associates an additional domain with its attribute name and logical dimension index.
static final class	NetCDFSliceProvider.DimensionIndexesContext	Per-variable context holding the available dimension lookups.

Constructor Summary

Constructors

Constructor	Description
NetCDFSliceProvider(VariableAdapter adapter, SimpleFeatureType schema, int startIndex, ReferencedEnvelope bounds, NetCDFSliceProvider.DimensionIndexesContext context)	Builds a slice provider for a NetCDF variable and its indexed dimension context.

Method Summary

Modifier and Type	Method	Description
ReferencedEnvelope	bounds(Query query)	Returns the bounds of the underlying variable slices.
int	count(Query query)	Counts the slices matching the provided query.
VariableAdapter	getAdapter()	Returns the variable adapter handled by this provider.
SimpleFeatureType	getSchema()	Returns the feature type used for slice features.
int	getStartIndex()	Returns the starting global image index for this variable.
Iterator<CoverageSlice>	iterate(Query query)	Returns an iterator over slices matching the provided query.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

NetCDFSliceProvider

public NetCDFSliceProvider(VariableAdapter adapter,
 SimpleFeatureType schema,
 int startIndex,
 ReferencedEnvelope bounds,
 NetCDFSliceProvider.DimensionIndexesContext context)

Builds a slice provider for a NetCDF variable and its indexed dimension context.

Method Details

iterate

public Iterator<CoverageSlice> iterate(Query query)

Returns an iterator over slices matching the provided query.

Specified by:

iterate in interface CoverageSlicesCatalog.SliceProvider

count

public int count(Query query)

Counts the slices matching the provided query.

Specified by:

count in interface CoverageSlicesCatalog.SliceProvider

bounds

public ReferencedEnvelope bounds(Query query)
                          throws IOException

Returns the bounds of the underlying variable slices. Note that all the slices of a Variable share the same spatial bounds, so we can return the variable bounds directly without looking at the query.

Specified by:

bounds in interface CoverageSlicesCatalog.SliceProvider

Throws:

IOException

getAdapter

public VariableAdapter getAdapter()

Returns the variable adapter handled by this provider.

getSchema

public SimpleFeatureType getSchema()

Returns the feature type used for slice features.

getStartIndex

public int getStartIndex()

Returns the starting global image index for this variable.