Package org.geotools.data.duckdb

Class DuckDBFilterToSQL

Object

FilterToSQL

DuckDBFilterToSQL

All Implemented Interfaces:

ExpressionVisitor, FilterVisitor

Direct Known Subclasses:

GeoParquetFilterToSQL

public class DuckDBFilterToSQL
extends FilterToSQL

Base FilterToSQL class for DuckDB with spatial support. Handles conversion of GeoTools filters to DuckDB SQL spatial functions.

Nested Class Summary

Nested classes/interfaces inherited from class FilterToSQL

FilterToSQL.FieldEncoder

Field Summary

Fields inherited from class FilterToSQL

capabilities, currentDimension, currentGeometry, currentSRID, databaseSchema, encodingFunction, escapeBackslash, featureType, fieldEncoder, filterFactory, inEncodingEnabled, inline, IO_ERROR, LOGGER, out, primaryKey, sqlNameEscape

Constructor Summary

Constructors

Constructor	Description
DuckDBFilterToSQL()

Method Summary

Modifier and Type	Method	Description
protected FilterCapabilities	createFilterCapabilities()	Sets the capabilities of this filter.
protected Object	visitBBOX(BBOX filter, Expression leftExp, Expression rightExpt, Object extraData)
protected Object	visitBinarySpatialOperator(BinarySpatialOperator filter, Expression leftExp, Expression rightExpt, Object extraData)	Handles the more general case of two generic expressions.
protected Object	visitBinarySpatialOperator(BinarySpatialOperator filter, PropertyName property, Literal geometry, boolean swapped, Object extraData)	Handles the common case of a PropertyName,Literal geometry binary spatial operator.
protected Object	visitDistanceBufferOperator(DistanceBufferOperator filter, Expression leftExp, Expression rightExpt, Object extraData)
protected void	visitLiteralBoundingBox(BoundingBox bounds)
protected void	visitLiteralGeometry(Literal expression)	Subclasses must implement this method in order to encode geometry filters according to the specific database implementation
protected void	visitLiteralGeometry(Geometry g)
protected void	write(String fmt, Object... args)

Methods inherited from class FilterToSQL

cast, encode, encode, encodeBinaryComparisonOperator, encodeToString, encodeToString, escapeLiteral, escapeName, evaluateLiteral, getCapabilities, getDatabaseSchema, getDistanceInNativeUnits, getExpressionType, getFeatureType, getFunctionName, getFunctionReturnType, getParameter, getPrimaryKey, getSqlNameEscape, isBinaryExpression, isEscapeBackslash, isInEncodingEnabled, processLikeLeftOperand, setCapabilities, setDatabaseSchema, setEscapeBackslash, setFeatureType, setFieldEncoder, setInEncodingEnabled, setInline, setPrimaryKey, setSqlNameEscape, setWriter, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visitBinaryComparisonOperator, visitBinarySpatialOperator, visitBinaryTemporalOperator, visitBinaryTemporalOperator, visitBinaryTemporalOperator, visitInFunction, visitLiteralTimePeriod, visitNullFilter, writeBinaryExpression, writeBinaryExpressionMember, writeLiteral

Methods inherited from class Object

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

Constructor Details

DuckDBFilterToSQL

public DuckDBFilterToSQL()

Method Details

createFilterCapabilities

protected FilterCapabilities createFilterCapabilities()

Description copied from class: FilterToSQL

Sets the capabilities of this filter.

Overrides:

createFilterCapabilities in class FilterToSQL

Returns:

FilterCapabilities for this Filter

visitLiteralGeometry

protected void visitLiteralGeometry(Literal expression)
                             throws IOException

Description copied from class: FilterToSQL

Subclasses must implement this method in order to encode geometry filters according to the specific database implementation

Overrides:

visitLiteralGeometry in class FilterToSQL

Throws:

IOException

visitLiteralGeometry

protected void visitLiteralGeometry(Geometry g)
                             throws IOException

Throws:

IOException

visitLiteralBoundingBox

protected void visitLiteralBoundingBox(BoundingBox bounds)
                                throws IOException

Throws:

IOException

visitBinarySpatialOperator

protected Object visitBinarySpatialOperator(BinarySpatialOperator filter,
 PropertyName property,
 Literal geometry,
 boolean swapped,
 Object extraData)

Description copied from class: FilterToSQL

Handles the common case of a PropertyName,Literal geometry binary spatial operator.

Overrides:

visitBinarySpatialOperator in class FilterToSQL

visitBinarySpatialOperator

protected Object visitBinarySpatialOperator(BinarySpatialOperator filter,
 Expression leftExp,
 Expression rightExpt,
 Object extraData)

Description copied from class: FilterToSQL

Handles the more general case of two generic expressions.

The most common case is two PropertyName expressions, which happens during a spatial join.

Overrides:

visitBinarySpatialOperator in class FilterToSQL

visitBBOX

protected Object visitBBOX(BBOX filter,
 Expression leftExp,
 Expression rightExpt,
 Object extraData)

visitDistanceBufferOperator

protected Object visitDistanceBufferOperator(DistanceBufferOperator filter,
 Expression leftExp,
 Expression rightExpt,
 Object extraData)

write

protected void write(String fmt,
 Object... args)