/* Copyright (c) 2013-2014 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.Context;
import org.locationtech.geogig.api.Ref;
import org.locationtech.geogig.api.SymRef;
import org.locationtech.geogig.api.plumbing.RefParse;
import org.locationtech.geogig.api.porcelain.CheckoutOp;
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;
import com.google.common.base.Optional;
/**
* The interface for the Checkout operation in GeoGig.
*
* Web interface for {@link CheckoutOp}
*/
public class CheckoutWebOp extends AbstractWebAPICommand {
private String branchOrCommit;
private boolean ours;
private boolean theirs;
private String path;
/**
* Mutator for the branchOrCommit variable
*
* @param branchOrCommit - the branch or commit to checkout
*/
public void setName(String branchOrCommit) {
this.branchOrCommit = branchOrCommit;
}
/**
* Mutator for the ours variable
*
* @param ours - true to use our version of the feature specified
*/
public void setOurs(boolean ours) {
this.ours = ours;
}
/**
* Mutator for the theirs variable
*
* @param theirs - true to use their version of the feature specified
*/
public void setTheirs(boolean theirs) {
this.theirs = theirs;
}
/**
* Mutator for the path variable
*
* @param path - the path to the feature that will be updated
*/
public void setPath(String path) {
this.path = path;
}
/**
* Runs the command and builds the appropriate response
*
* @throws CommandSpecException
*/
@Override
public void run(CommandContext context) {
if (this.getTransactionId() == null) {
throw new CommandSpecException(
"No transaction was specified, checkout requires a transaction to preserve the stability of the repository.");
}
final Context geogig = this.getCommandLocator(context);
CheckoutOp command = geogig.command(CheckoutOp.class);
if (branchOrCommit != null) {
Optional<Ref> head = geogig.command(RefParse.class).setName(Ref.HEAD).call();
if (!head.isPresent()) {
throw new CommandSpecException("Repository has no HEAD, can't merge.");
}
final String target = ((SymRef) head.get()).getTarget();
command.setSource(branchOrCommit).call();
context.setResponseContent(new CommandResponse() {
@Override
public void write(ResponseWriter out) throws Exception {
out.start();
out.writeElement("OldTarget", target);
out.writeElement("NewTarget", branchOrCommit);
out.finish();
}
});
} else if (path != null) {
command.addPath(path);
if (ours && !theirs) {
command.setOurs(ours);
} else if (theirs && !ours) {
command.setTheirs(theirs);
} else {
throw new CommandSpecException(
"Please specify either ours or theirs to update the feature path specified.");
}
command.call();
context.setResponseContent(new CommandResponse() {
@Override
public void write(ResponseWriter out) throws Exception {
out.start();
out.writeElement("Path", path);
out.writeElement("Strategy", ours ? "ours" : "theirs");
out.finish();
}
});
} else {
throw new CommandSpecException("No branch or commit specified for checkout.");
}
}
}