project object contains info about map canvas implementation

model/src/main/java/lcsb/mapviewer/model/Project.java

@@ -2,6 +2,7 @@ package lcsb.mapviewer.model;
 
 import java.io.Serializable;
 import java.util.ArrayList;
+import java.util.Calendar;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
@@ -31,6 +32,7 @@ import org.hibernate.annotations.LazyCollectionOption;
 import lcsb.mapviewer.common.EventStorageLoggerAppender;
 import lcsb.mapviewer.common.exception.InvalidArgumentException;
 import lcsb.mapviewer.model.cache.UploadedFileEntry;
+import lcsb.mapviewer.model.graphics.MapCanvasType;
 import lcsb.mapviewer.model.map.MiriamData;
 import lcsb.mapviewer.model.map.OverviewImage;
 import lcsb.mapviewer.model.map.OverviewImageLink;
@@ -123,6 +125,16 @@ public class Project implements Serializable {
   @Column(columnDefinition = "TEXT")
   private String warnings;
 
+  /**
+   * Which "maps" implementation should be used for frontend visualization.
+   */
+  @Enumerated(EnumType.STRING)
+  @Column(name="map_canvas_type")
+  private MapCanvasType mapCanvasType = MapCanvasType.OPEN_LAYERS;
+
+  @Column(name="google_map_license_accept_date")
+  private Calendar googleMapLicenseAcceptDate;
+
   /**
    * Map models in the project.
    */
@@ -586,4 +598,20 @@ public class Project implements Serializable {
     this.notifyEmail = notifyEmail;
   }
 
+  public MapCanvasType getMapCanvasType() {
+    return mapCanvasType;
+  }
+
+  public void setMapCanvasType(MapCanvasType mapCanvasType) {
+    this.mapCanvasType = mapCanvasType;
+  }
+
+  public Calendar getGoogleMapLicenseAcceptDate() {
+    return googleMapLicenseAcceptDate;
+  }
+
+  public void setGoogleMapLicenseAcceptDate(Calendar googleMapLicenseAcceptDate) {
+    this.googleMapLicenseAcceptDate = googleMapLicenseAcceptDate;
+  }
+
 }

model/src/main/java/lcsb/mapviewer/model/graphics/MapCanvasType.java

+package lcsb.mapviewer.model.graphics;
+
+public enum MapCanvasType {
+  GOOGLE_MAPS_API, OPEN_LAYERS
+}

persist/src/db/12.1.0~alpha.0/fix_db_20180427.sql

+-- alternative implementation of map canvas
+
+alter table project_table add column google_map_license_accept_date timestamp without time zone;
+alter table project_table add column map_canvas_type character varying default 'OPEN_LAYERS';