Package org.eclipse.persistence.expressions.spatial

Class SpatialExpressionFactory

java.lang.Object

org.eclipse.persistence.expressions.spatial.SpatialExpressionFactory

public class SpatialExpressionFactory
extends Object

This class is used to construct expressions that use Oracle Spatial operators

 ExpressionBuilder builder = new ExpressionBuilder();
 Expression withinDistance = SpatialExpressions.withinDistance(myJGeometry1, myJGeometry2, "DISTANCE=10");
 session.readAllObjects(GeometryHolder.class, withinDistance);
 

Constructor Summary

Constructors

Constructor	Description
SpatialExpressionFactory()

Method Summary

Modifier and Type	Method	Description
static Expression	filter(Expression geom1, Object geom2, SpatialParameters params)	PUBLIC: Return an Expression for the MDSYS.SDO_FILTER Spatial Operator on the Oracle Database Use of this operator requires the Java spatial classes
static Expression	getSpatialExpression(int operator, Expression geom1, Object geom2, String params)	INTERNAL: A utility method to build a SpatialExpression
static Expression	nearestNeighbor(Expression geom1, Object geom2, SpatialParameters params)	PUBLIC: Return an Expression for the MDSYS.SDO_NN Spatial Operator on the Oracle Database Use of this operator requires the Java spatial classes
static Expression	relate(Expression geom1, Object geom2, SpatialParameters params)	PUBLIC: Return an Expression for the MDSYS.MDSYS.SDO_RELATE Spatial Operator on the Oracle Database Use of this operator requires the Java spatial classes
static Expression	withinDistance(Expression geom1, Object geom2, SpatialParameters params)	PUBLIC: Return an Expression for the MDSYS.SDO_WITHIN_DISTANCE Spatial Operator on the Oracle Database Use of this expression requires the Java spatial classes

Methods inherited from class java.lang.Object

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

Constructor Details

SpatialExpressionFactory

public SpatialExpressionFactory()

Method Details

withinDistance

public static Expression withinDistance(Expression geom1,
 Object geom2,
 SpatialParameters params)

PUBLIC: Return an Expression for the MDSYS.SDO_WITHIN_DISTANCE Spatial Operator on the Oracle Database Use of this expression requires the Java spatial classes

 SpatialParameters parameters = new SpatialParameters();
parameters.setDistance(10d);
 Expression selectCriteria = SpatialExpressions.withinDistance(jGeometry1, jGeometry2, parameters);
 

Parameters:

geom1 - an Expression representing a JGeometryObject

geom2 - a JGeometryObject or an Expression representing a JGeometryObject

params - a SpatialParameters object configured with the parameters to the call

Returns:

a TopLink Expression

relate

public static Expression relate(Expression geom1,
 Object geom2,
 SpatialParameters params)

PUBLIC: Return an Expression for the MDSYS.MDSYS.SDO_RELATE Spatial Operator on the Oracle Database Use of this operator requires the Java spatial classes

 SpatialParameters parameters = new SpatialParameters();
 parameters..setMask(Mask.ANYINTERACT).setQueryType(QueryType.WINDOW);
 Expression selectCriteria = SpatialExpressions.relate(jGeometry1, jGeometry2, parameters);
 

Parameters:

geom1 - an Expression representing a JGeometryObject

geom2 - a JGeometryObject or an Expression representing a JGeometryObject

params - a SpatialParameters object configured with the parameters to the call

Returns:

a TopLink Expression

filter

public static Expression filter(Expression geom1,
 Object geom2,
 SpatialParameters params)

PUBLIC: Return an Expression for the MDSYS.SDO_FILTER Spatial Operator on the Oracle Database Use of this operator requires the Java spatial classes

 SpatialParameters parameters = new SpatialParameters();
 parameters.setQueryType(QueryType.WINDOW);
 Expression selectCriteria = SpatialExpressions.filter(jGeometry1, jGeometry2, parameters);
 

Parameters:

geom1 - an Expression representing a JGeometryObject

geom2 - a JGeometryObject or an Expression representing a JGeometryObject

params - a SpatialParameters object configured with the parameters to the call

Returns:

a TopLink Expression

nearestNeighbor

public static Expression nearestNeighbor(Expression geom1,
 Object geom2,
 SpatialParameters params)

PUBLIC: Return an Expression for the MDSYS.SDO_NN Spatial Operator on the Oracle Database Use of this operator requires the Java spatial classes

 SpatialParameters parameters = new SpatialParameters();
 parameters.setUnit(Units.M);
 Expression selectCriteria = SpatialExpressions.nearestNeighbor(jGeometry1, jGeometry2, parameters);
 

Parameters:

geom1 - an Expression representing a JGeometryObject

geom2 - a JGeometryObject or an Expression representing a JGeometryObject

params - a SpatialParameters object configured with the parameters to the call

Returns:

a TopLink Expression

getSpatialExpression

public static Expression getSpatialExpression(int operator,
 Expression geom1,
 Object geom2,
 String params)

INTERNAL: A utility method to build a SpatialExpression

Parameters:

operator - the ordinal of the operator

geom1 -

geom2 -

params -

Returns: