/* Copyright 2013 The jeo project. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.jeo.geopkg;
import java.io.IOException;
import io.jeo.data.Transaction;
import io.jeo.vector.Feature;
import io.jeo.vector.FeatureAppendCursor;
import io.jeo.vector.ListFeature;
import io.jeo.vector.Schema;
import io.jeo.sql.Backend.Session;
public class GeoPkgFeatureAppendCursor extends FeatureAppendCursor {
Session session;
Transaction tx;
FeatureEntry entry;
GeoPkgWorkspace ws;
Schema schema;
Feature next;
GeoPkgFeatureAppendCursor(Session session, Transaction tx, FeatureEntry entry, Schema schema, GeoPkgWorkspace ws) throws IOException {
this.session = session;
this.tx = tx;
this.entry = entry;
this.ws = ws;
this.schema = schema;
if (tx == Transaction.NULL) {
// without a transaction, performance is miserable
session.beginTransaction();
}
}
@Override
public Feature next() throws IOException {
return next = new ListFeature(schema);
}
@Override
public GeoPkgFeatureAppendCursor write() throws IOException {
ws.insert(entry, next, session);
return this;
}
@Override
public void close() throws IOException {
if (session != null) {
// if not using an "outer" transaction, close the one we created
if (tx == Transaction.NULL) {
session.endTransaction(true);
session.close();
}
session = null;
}
}
}