HgRepositoryContextCache.java :  » IDE-Netbeans » mercurial » org » netbeans » modules » mercurial » util » Java Open Source

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package org.netbeans.modules.mercurial.util;

import java.io.File;
import java.util.Set;
import java.util.logging.Level;
import org.netbeans.modules.mercurial.Mercurial;
import org.netbeans.modules.versioning.spi.VCSContext;

/**
 * A class to encapsulate a Repository and allow us to cache some values
 *
 * @author John Rice
 */
public class HgRepositoryContextCache {
    private static boolean hasHistory;
    private static String pushDefault;
    private static String pullDefault;
    private static File root;
    
    private static VCSContext rootCtx;
    private static Set<File> historyCtxRootFiles;
    private static Set<File> pushCtxRootFiles;
    private static Set<File> pullCtxRootFiles;

    public static boolean hasHistory(VCSContext ctx) {
        Set<File> files;
        if(ctx == null) return false;
        files = ctx.getRootFiles();
        
        if(files.equals(historyCtxRootFiles)){
            return hasHistory;
        }else{
            root = getRoot(ctx);
            hasHistory = HgCommand.hasHistory(root);
            historyCtxRootFiles = ctx.getRootFiles();
            return hasHistory;
        }
        
    }
        
    public static void setHasHistory(VCSContext ctx) {
        historyCtxRootFiles = ctx.getRootFiles();
        hasHistory = true;
    }

    public static void resetPullDefault() {
        pullCtxRootFiles = null;
    }

    public static String getPullDefault(VCSContext ctx) {
        Set<File> files;
        if(ctx == null) return null;
        files = ctx.getRootFiles();
        
        if(files.equals(pullCtxRootFiles)){
            return pullDefault;
        }else{
            root = getRoot(ctx);
            pullDefault = HgCommand.getPullDefault(root);
            pullCtxRootFiles = ctx.getRootFiles();
            return pullDefault;
        }
    }
    
    public static void resetPushDefault() {
        pushCtxRootFiles = null;
    }

    public static String getPushDefault(VCSContext ctx) {
        Set<File> files;
        if(ctx == null) return null;
        files = ctx.getRootFiles();
        
        if(files.equals(pushCtxRootFiles)){
            return pushDefault;
        }else{
            root = getRoot(ctx);
            pushDefault = HgCommand.getPushDefault(root);
            pushCtxRootFiles = ctx.getRootFiles();
            return pushDefault;
        }
    }
    
    private static File getRoot(VCSContext ctx){
        if(ctx == rootCtx && root != null){
            return root;
        }else{
            root = HgUtils.getRootFile(ctx);
            rootCtx = ctx;
            return root;
        }

    }
}