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| | | /**
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| | | * Handles requests for branch graphs
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| | | * |
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| | | *
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| | | * @author James Moger
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| | | * |
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| | | *
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| | | */
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| | | public class BranchGraphServlet extends HttpServlet {
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| | |
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| | | /**
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| | | * Returns an url to this servlet for the specified parameters.
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| | | * |
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| | | *
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| | | * @param baseURL
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| | | * @param repository
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| | | * @param objectId
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| | | }
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| | | // fetch the requested commits plus some extra so that the last
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| | | // commit displayed *likely* has correct lane assignments |
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| | | // commit displayed *likely* has correct lane assignments
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| | | CommitList commitList = new CommitList();
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| | | commitList.source(rw);
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| | | commitList.fillTo(2*Math.max(requestedCommits, maxCommits));
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| | |
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| | | // determine the appropriate width for the image
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| | | int numLanes = 0;
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| | | int numLanes = 1;
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| | | int numCommits = Math.min(requestedCommits, commitList.size());
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| | | Set<String> parents = new TreeSet<String>();
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| | | for (int i = 0; i < commitList.size(); i++) {
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| | | PlotCommit<Lane> commit = commitList.get(i);
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| | | boolean checkLane = false;
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| | | if (i < numCommits) {
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| | | // commit in visible list
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| | | checkLane = true;
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| | | |
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| | | // remember parents
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| | | for (RevCommit p : commit.getParents()) {
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| | | parents.add(p.getName());
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| | | if (numCommits > 1) {
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| | | // determine graph width
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| | | Set<String> parents = new TreeSet<String>();
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| | | for (int i = 0; i < commitList.size(); i++) {
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| | | PlotCommit<Lane> commit = commitList.get(i);
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| | | boolean checkLane = false;
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| | |
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| | | if (i < numCommits) {
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| | | // commit in visible list
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| | | checkLane = true;
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| | |
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| | | // remember parents
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| | | for (RevCommit p : commit.getParents()) {
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| | | parents.add(p.getName());
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| | | }
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| | | } else if (parents.contains(commit.getName())) {
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| | | // commit outside visible list, but it is a parent of a
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| | | // commit in the visible list so we need to know it's lane
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| | | // assignment
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| | | checkLane = true;
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| | | }
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| | | } else if (parents.contains(commit.getName())) {
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| | | // commit outside visible list, but it is a parent of a
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| | | // commit in the visible list so we need to know it's lane
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| | | // assignment
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| | | checkLane = true;
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| | | }
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| | | |
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| | | if (checkLane) {
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| | | int pos = commit.getLane().getPosition();
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| | | numLanes = Math.max(numLanes, pos + 1);
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| | | if (checkLane) {
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| | | int pos = commit.getLane().getPosition();
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| | | numLanes = Math.max(numLanes, pos + 1);
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| | | }
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| | | }
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| | | }
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| | | // create an image buffer and render the lanes
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| | | BufferedImage image = new BufferedImage(graphWidth, rowHeight*numCommits, BufferedImage.TYPE_INT_ARGB);
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| | |
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| | | Graphics2D g = null;
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| | | try {
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| | | g = image.createGraphics();
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| | | // write the image buffer to the client
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| | | response.setContentType("image/png");
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| | | if (numCommits > 0) {
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| | | if (numCommits > 1) {
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| | | response.setHeader("Cache-Control", "public, max-age=60, must-revalidate");
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| | | response.setDateHeader("Last-Modified", JGitUtils.getCommitDate(commitList.get(0)).getTime());
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| | | }
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