Package org.h2gis.geotools

Class H2GISFilterToSQLHelper

Object

H2GISFilterToSQLHelper

public class H2GISFilterToSQLHelper
extends Object

jdbc-h2gis is an extension to connect H2GIS a spatial library that brings spatial support to the H2 Java database.

H2GIS filter wrapper for H2GIS database.

Author:

Erwan Bocher

Constructor Summary

Constructors

Constructor	Description
H2GISFilterToSQLHelper(FilterToSQL filterToSQL)

Method Summary

Modifier and Type	Method	Description
String	cast(String property, Class<?> target)
static FilterCapabilities	createFilterCapabilities(boolean encodeFunctions, FilterCapabilities superCaps)
static String	getFunctionName(Function function)	Maps a function to its native db equivalent
protected Object	visitBinarySpatialOperator(BinarySpatialOperator filter, Expression e1, Expression e2, Object extraData)
protected Object	visitBinarySpatialOperator(BinarySpatialOperator filter, PropertyName property, Literal geometry, boolean swapped, Object extraData)
boolean	visitFunction(Function function, Object extraData)	Performs custom visits for functions that cannot be encoded as functionName(p1, p2, ... pN).

Methods inherited from class Object

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

Constructor Detail

H2GISFilterToSQLHelper

public H2GISFilterToSQLHelper(FilterToSQL filterToSQL)

Parameters:

filterToSQL -

Method Detail

createFilterCapabilities

public static FilterCapabilities createFilterCapabilities(boolean encodeFunctions,
                                                          FilterCapabilities superCaps)

Parameters:

encodeFunctions -

Returns:

visitBinarySpatialOperator

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

Parameters:

filter -

property -

geometry -

swapped -

extraData -

Returns:

visitBinarySpatialOperator

protected Object visitBinarySpatialOperator(BinarySpatialOperator filter,
                                            Expression e1,
                                            Expression e2,
                                            Object extraData)

Parameters:

filter -

e1 -

e2 -

extraData -

Returns:

getFunctionName

public static String getFunctionName(Function function)

Maps a function to its native db equivalent

Parameters:

function -

Returns:

visitFunction

public boolean visitFunction(Function function,
                             Object extraData)
                      throws IOException

Performs custom visits for functions that cannot be encoded as functionName(p1, p2, ... pN).

Parameters:

function -

extraData -

Returns:

Throws:

IOException

cast

public String cast(String property,
                   Class<?> target)

Parameters:

property -

target -

Returns: