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/*
* Copyright (c) 1998, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Oracle - initial API and implementation from Oracle TopLink
package org.eclipse.persistence.platform.database.oracle.converters;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Struct;
import org.eclipse.persistence.platform.database.converters.StructConverter;
/**
* PUBLIC:
* A StructConverter that can be used to convert the oracle.spatial.geometry.JGeometry as
* it is read and written from the database. To use this StructConverter, it must be added
* to the DatabasePlatform either with the addStructConverter(StructConverter) method or specified in
* sessions.xml. It requires that the oracle.spatial.geometry.JGeometry type is available on
* the Classpath
*/
public class JGeometryConverter implements StructConverter {
private final static String JGEOMETRY_DB_TYPE = "MDSYS.SDO_GEOMETRY";
private final Class JGEOMETRY_CLASS;
private final MethodHandle loadJSMethod;
private final MethodHandle storeJSMethod;
public JGeometryConverter() {
try {
JGEOMETRY_CLASS = Class.forName("oracle.spatial.geometry.JGeometry");
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
MethodHandles.Lookup lookup = MethodHandles.lookup();
try {
loadJSMethod = lookup.unreflect(JGEOMETRY_CLASS.getMethod("loadJS", Struct.class));
storeJSMethod = lookup.unreflect(JGEOMETRY_CLASS.getMethod("storeJS", JGEOMETRY_CLASS, Connection.class));
} catch (IllegalAccessException|NoSuchMethodException e) {
throw new RuntimeException(e);
}
}
@Override
public String getStructName() {
return JGEOMETRY_DB_TYPE;
}
@Override
public Class getJavaType() {
return JGEOMETRY_CLASS;
}
@Override
public Object convertToObject(Struct struct) throws SQLException {
if (struct == null){
return null;
}
try {
return loadJSMethod.invokeWithArguments(struct);
} catch (Throwable throwable) {
throw new SQLException(throwable);
}
}
@Override
public Struct convertToStruct(Object geometry, Connection connection) throws SQLException {
if (geometry == null){
return null;
}
try {
return (Struct) storeJSMethod.invokeWithArguments(JGEOMETRY_CLASS.cast(geometry), connection);
} catch (Throwable throwable) {
throw new SQLException(throwable);
}
}
}
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