/* Copyright (c) 2013 Boundless and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Distribution License v1.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/org/documents/edl-v10.html
*
* Contributors:
* Kelsey Ishmael (LMN Solutions) - initial implementation
*/
package org.locationtech.geogig.web.api.commands;
import org.locationtech.geogig.api.GeoGIG;
import org.locationtech.geogig.api.GeogigTransaction;
import org.locationtech.geogig.api.plumbing.TransactionBegin;
import org.locationtech.geogig.web.api.AbstractWebAPICommand;
import org.locationtech.geogig.web.api.CommandContext;
import org.locationtech.geogig.web.api.CommandResponse;
import org.locationtech.geogig.web.api.CommandSpecException;
import org.locationtech.geogig.web.api.ResponseWriter;
/**
* The interface for the TransactionBegin operation in GeoGig.
*
* Web interface for {@link TransactionBegin}
*/
public class BeginTransaction extends AbstractWebAPICommand {
/**
* Runs the command and builds the appropriate response.
*
* @param context - the context to use for this command
*
* @throws CommandSpecException
*/
@Override
public void run(CommandContext context) {
if (this.getTransactionId() != null) {
throw new CommandSpecException("Tried to start a transaction within a transaction.");
}
final GeoGIG geogig = context.getGeoGIG();
final GeogigTransaction transaction = geogig.command(TransactionBegin.class).call();
context.setResponseContent(new CommandResponse() {
@Override
public void write(ResponseWriter out) throws Exception {
out.start();
out.writeTransactionId(transaction.getTransactionId());
out.finish();
}
});
}
}