Implementation of shared database support (base system).

src/main/java/net/sf/jabref/BibDatabaseContext.java

@@ -9,6 +9,8 @@
 import net.sf.jabref.model.database.BibDatabase;
 import net.sf.jabref.model.database.BibDatabaseMode;
 import net.sf.jabref.model.database.BibDatabaseModeDetection;
+import net.sf.jabref.model.database.DatabaseLocation;
+import net.sf.jabref.remote.DBSynchronizer;
 
 /**
  * Represents everything related to a .bib file.
@@ -22,6 +24,7 @@ public class BibDatabaseContext {
     private final Defaults defaults;
     /** The file where this database was last saved to. */
     private File file;
+    private DBSynchronizer dbSynchronizer;
 
     public BibDatabaseContext() {
         this(new Defaults());
@@ -35,6 +38,14 @@ public BibDatabaseContext(BibDatabase database) {
         this(database, new Defaults());
     }
 
+    public BibDatabaseContext(DatabaseLocation location) {
+        this(new BibDatabase(location));
+    }
+
+    public BibDatabaseContext(DatabaseLocation location, Defaults defaults) {
+        this(new BibDatabase(location), defaults);
+    }
+
     public BibDatabaseContext(BibDatabase database, Defaults defaults) {
         this(database, new MetaData(), defaults);
     }
@@ -43,6 +54,11 @@ public BibDatabaseContext(BibDatabase database, MetaData metaData, Defaults defa
         this.defaults = Objects.requireNonNull(defaults);
         this.database = Objects.requireNonNull(database);
         this.metaData = Objects.requireNonNull(metaData);
+
+        if (database.getLocation() == DatabaseLocation.REMOTE) {
+            this.dbSynchronizer = new DBSynchronizer();
+            database.registerListener(dbSynchronizer);
+        }
     }
 
     public BibDatabaseContext(BibDatabase database, MetaData metaData) {
@@ -178,4 +194,8 @@ private String getFileDirectoryPath(String directoryName) {
     public List<String> getFileDirectory() {
         return getFileDirectory(Globals.FILE_FIELD);
     }
+
+    public DBSynchronizer getDBSynchronizer() {
+        return this.dbSynchronizer;
+    }
 }

src/main/java/net/sf/jabref/MetaData.java

@@ -42,7 +42,6 @@
 import net.sf.jabref.logic.labelpattern.DatabaseLabelPattern;
 import net.sf.jabref.logic.util.strings.StringUtil;
 import net.sf.jabref.model.database.BibDatabaseMode;
-import net.sf.jabref.sql.DBStrings;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
@@ -68,11 +67,8 @@ public class MetaData implements Iterable<String> {
 
     private AbstractLabelPattern labelPattern;
 
-    private DBStrings dbStrings = new DBStrings();
-
     private Charset encoding = Globals.prefs.getDefaultEncoding();
 
-
     /**
      * The MetaData object stores all meta data sets in Vectors. To ensure that
      * the data is written correctly to string, the user of a meta data Vector
@@ -222,14 +218,6 @@ private static String getNextUnit(Reader reader) throws IOException {
         return null;
     }
 
-    public DBStrings getDBStrings() {
-        return dbStrings;
-    }
-
-    public void setDBStrings(DBStrings dbStrings) {
-        this.dbStrings = dbStrings;
-    }
-
     /**
      * @return the stored label patterns
      */

src/main/java/net/sf/jabref/event/EntryAddedEvent.java

@@ -1,5 +1,6 @@
 package net.sf.jabref.event;
 
+import net.sf.jabref.event.location.EntryEventLocation;
 import net.sf.jabref.model.entry.BibEntry;
 
 /**
@@ -16,4 +17,12 @@ public EntryAddedEvent(BibEntry bibEntry) {
         super(bibEntry);
     }
 
+    /**
+     * @param bibEntry <code>BibEntry</code> object which has been added.
+     * @param location Location affected by this event
+     */
+    public EntryAddedEvent(BibEntry bibEntry, EntryEventLocation location) {
+        super(bibEntry, location);
+    }
+
 }

src/main/java/net/sf/jabref/event/EntryChangedEvent.java

@@ -1,5 +1,6 @@
 package net.sf.jabref.event;
 
+import net.sf.jabref.event.location.EntryEventLocation;
 import net.sf.jabref.model.entry.BibEntry;
 
 /**
@@ -15,4 +16,12 @@ public EntryChangedEvent(BibEntry bibEntry) {
         super(bibEntry);
     }
 
+    /**
+     * @param bibEntry <code>BibEntry</code> object the changes were applied on.
+     * @param location Location affected by this event
+     */
+    public EntryChangedEvent(BibEntry bibEntry, EntryEventLocation location) {
+        super(bibEntry, location);
+    }
+
 }

src/main/java/net/sf/jabref/event/EntryEvent.java

@@ -1,5 +1,6 @@
 package net.sf.jabref.event;
 
+import net.sf.jabref.event.location.EntryEventLocation;
 import net.sf.jabref.model.entry.BibEntry;
 
 /**
@@ -9,15 +10,30 @@
 public abstract class EntryEvent {
 
     private final BibEntry bibEntry;
+    private final EntryEventLocation location;
+
 
     /**
-     * @param bibEntry BibEntry object which is involved in this event 
+     * @param bibEntry BibEntry object which is involved in this event
      */
     public EntryEvent(BibEntry bibEntry) {
+        this(bibEntry, EntryEventLocation.ALL);
+    }
+
+    /**
+     * @param bibEntry BibEntry object which is involved in this event
+     * @param location Location affected by this event
+     */
+    public EntryEvent(BibEntry bibEntry, EntryEventLocation location) {
         this.bibEntry = bibEntry;
+        this.location = location;
     }
 
     public BibEntry getBibEntry() {
         return this.bibEntry;
     }
+
+    public EntryEventLocation getEntryEventLocation() {
+        return this.location;
+    }
 }

src/main/java/net/sf/jabref/event/EntryRemovedEvent.java

@@ -1,5 +1,6 @@
 package net.sf.jabref.event;
 
+import net.sf.jabref.event.location.EntryEventLocation;
 import net.sf.jabref.model.entry.BibEntry;
 
 /**
@@ -16,4 +17,12 @@ public EntryRemovedEvent(BibEntry bibEntry) {
         super(bibEntry);
     }
 
+    /**
+     * @param bibEntry <code>BibEntry</code> object which has been removed.
+     * @param location Location affected by this event
+     */
+    public EntryRemovedEvent(BibEntry bibEntry, EntryEventLocation location) {
+        super(bibEntry, location);
+    }
+
 }

src/main/java/net/sf/jabref/event/FieldChangedEvent.java

@@ -1,5 +1,6 @@
 package net.sf.jabref.event;
 
+import net.sf.jabref.event.location.EntryEventLocation;
 import net.sf.jabref.model.entry.BibEntry;
 
 /**
@@ -21,6 +22,18 @@ public FieldChangedEvent(BibEntry bibEntry, String fieldName, String newValue) {
         this.newValue = newValue;
     }
 
+    /**
+     * @param bibEntry Affected BibEntry object
+     * @param fieldName Name of field which has been changed
+     * @param newValue new field value
+     * @param location location Location affected by this event
+     */
+    public FieldChangedEvent(BibEntry bibEntry, String fieldName, String newValue, EntryEventLocation location) {
+        super(bibEntry, location);
+        this.fieldName = fieldName;
+        this.newValue = newValue;
+    }
+
     public String getFieldName() {
         return fieldName;
     }

src/main/java/net/sf/jabref/event/location/EntryEventLocation.java

@@ -0,0 +1,25 @@
+/*  Copyright (C) 2003-2016 JabRef contributors.
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+package net.sf.jabref.event.location;
+
+/**
+ * This enum entries represent the radius which is affected by posting different EntryEvents.
+ */
+public enum EntryEventLocation {
+    ALL,
+    REMOTE,
+    LOCAL
+}