org.datanucleus.store.rdbms.sql.method

Class SpatialMethodHelper

java.lang.Object

org.datanucleus.store.rdbms.sql.method.SpatialMethodHelper

public class SpatialMethodHelper
extends Object

Helper class for creating method handlers.

Constructor Summary

Constructors

Constructor and Description
SpatialMethodHelper()

Method Summary

Methods

Modifier and Type	Method and Description
static org.datanucleus.store.rdbms.sql.expression.BooleanExpression	getBooleanExpression(org.datanucleus.store.rdbms.sql.SQLStatement stmt, String funcName, List funcArgs, org.datanucleus.store.rdbms.sql.expression.SQLExpressionFactory exprFactory) Convenience accessor for a boolean expression for a geometry expression.
static org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping	getGeometryMapping(org.datanucleus.ClassLoaderResolver clr, org.datanucleus.store.rdbms.sql.expression.SQLExpression expr) Method to return the java type mapping to use for the geometry of the input expression.

Methods inherited from class java.lang.Object

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

Constructor Detail

SpatialMethodHelper

public SpatialMethodHelper()

Method Detail

getGeometryMapping

public static org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping getGeometryMapping(org.datanucleus.ClassLoaderResolver clr,
                                                                          org.datanucleus.store.rdbms.sql.expression.SQLExpression expr)

Method to return the java type mapping to use for the geometry of the input expression. Uses the java type represented by the expression to define which Geometry class to use.

Parameters:

clr - ClassLoader resolver

expr - The expression

Returns:

The mapping to use.

getBooleanExpression

public static org.datanucleus.store.rdbms.sql.expression.BooleanExpression getBooleanExpression(org.datanucleus.store.rdbms.sql.SQLStatement stmt,
                                                                                String funcName,
                                                                                List funcArgs,
                                                                                org.datanucleus.store.rdbms.sql.expression.SQLExpressionFactory exprFactory)

Convenience accessor for a boolean expression for a geometry expression. Geometry expressions seem to return a string "1" or "0" if true or false respectively so use an equality expression of that form.

Parameters:

stmt - The statement that this is part of

funcName - Function name

funcArgs - Args to the function

exprFactory - The expression factory

Returns:

The boolean expression