add set/remove link section for section

Author: mpsonntag

+nix/Section.m

@@ -34,15 +34,32 @@
                section = nix.Section(handle);
            end;
         end;
-        
-        function section = link(obj)
-           handle = nix_mx('Section::link', obj.nix_handle);
+
+        % ----------------
+        % Link methods
+        % ----------------
+
+        function [] = set_link(obj, val)
+            if (isempty(val))
+                nix_mx('Section::set_none_link', obj.nix_handle);
+            else
+                if(strcmp(class(val), 'nix.Section'))
+                    addID = val.id;
+                else
+                    addID = val;
+                end;
+                nix_mx('Section::set_link', obj.nix_handle, addID);
+            end;
+        end;
+
+        function section = openLink(obj)
+           handle = nix_mx('Section::openLink', obj.nix_handle);
            section = {};
            if handle ~= 0
                section = nix.Section(handle);
            end;
         end;
-        
+
         % ----------------
         % Section methods
         % ----------------

nix_mx.cc

@@ -212,7 +212,9 @@ void mexFunction(int            nlhs,
             .reg("openSection", GETBYSTR(nix::Section, nix::Section, getSection))
             .reg("hasProperty", GETBYSTR(bool, nix::Section, hasProperty))
             .reg("hasSection", GETBYSTR(bool, nix::Section, hasSection))
-            .reg("link", GETCONTENT(nix::Section, nix::Section, link))
+            .reg("openLink", GETCONTENT(nix::Section, nix::Section, link))
+            .reg("set_link", SETTER(const std::string&, nix::Section, link))
+            .reg("set_none_link", SETTER(const boost::none_t, nix::Section, link))
             .reg("parent", GETCONTENT(nix::Section, nix::Section, parent))
             .reg("set_type", SETTER(const std::string&, nix::Section, type))
             .reg("set_definition", SETTER(const std::string&, nix::Section, definition))

tests/TestSection.m

@@ -11,6 +11,7 @@
     funcs{end+1} = @test_has_section;
     funcs{end+1} = @test_attrs;
     funcs{end+1} = @test_properties;
+    funcs{end+1} = @test_link;
 end
 
 %% Test: Create Section
@@ -133,3 +134,20 @@
 
     assert(isempty(f.sections{3}.allProperties));
 end
+
+%%Test: set, open and remove section link
+function [] = test_link( varargin )
+    f = nix.File(fullfile(pwd, 'tests', 'testRW.h5'), nix.FileMode.Overwrite);
+    mainSec = f.createSection('mainSection', 'nixSection');
+    tmp = f.createSection('linkSection1', 'nixSection');
+    tmp = f.createSection('linkSection2', 'nixSection');
+    
+    assert(isempty(mainSec.openLink));
+    mainSec.set_link(f.sections{3}.id);
+    assert(strcmp(mainSec.openLink.name, 'linkSection2'));
+    mainSec.set_link(f.sections{2});
+    assert(strcmp(mainSec.openLink.name, 'linkSection1'));
+    
+    mainSec.set_link('');
+    assert(isempty(mainSec.openLink));
+end