Package org.geotools.imageio.netcdf.slice.filter

package org.geotools.imageio.netcdf.slice.filter

NetCDF filtering infrastructure

Filter splitting and translation

The filter portion of the package focuses on analyzing the original GeoTools filter and separating the dimension-based predicates from the residual post-filter. The main classes involved are:

• DimensionFilterSplitter is the main entry point. It coordinates the split process and returns a SplitFilterResult containing the recognized time/elevation/additional filters plus the residual post-filter.
• FilterSplittingVisitor walks the original GeoTools filter tree and decides which predicates are pushdown-safe and which must remain post-processed.
• PreFilterDimensionExtractor converts the recognized pre-filter subtree into dimension-specific DimensionFilter objects.
• SplitFilterResult is the transport object carrying the outcome of this phase.

Related Packages

Package	Description
org.geotools.imageio.netcdf.slice	NetCDF slice-query infrastructure used by the GeoTools NetCDF reader to translate catalog-style Query objects into NetCDF dimension selections and, ultimately, into readable 2D slices.

Class	Description
DimensionFilter	Filter on a single dimension of the coverage.
DimensionFilter.AdditionalDimensionFilter	Associates a filter with a specific additional logical dimension.
DimensionFilter.CompositeDimensionFilter	A composite filter that combines two filters with logical AND.
DimensionFilter.ExactDimensionFilter	A filter that matches if the coordinate value on the given dimension is equal to the expected value.
DimensionFilter.ListFilter	A filter that matches if the coordinate value on the given dimension is contained in the expected list.
DimensionFilter.RangeFilter
DimensionFilterSplitter	Splits a GeoTools filter into dimension-backed predicates and a residual post-filter.
DimensionFilterSplitter.AttributeLiteralPair	Holds a property/literal pair extracted from a binary comparison.
DimensionFilterSplitter.ComparisonPair	Holds a comparison pair with the normalized comparison direction.
DimensionFilterSplitter.ComparisonType	Comparison operators used while translating binary predicates into ranges.
PreFilterDimensionExtractor	Converts the pre-filter produced by the split phase into dimension filter objects.
SplitFilterResult	Holds the recognized dimension filters and the residual post-filter.