Added cascadingChildrenNames set and appropriate methods.

Signed-off-by: Winston Prakash <winston.prakash@gmail.com>

2 files changed, 57 insertions, 0 deletions

diff --git a/hudson-core/src/main/java/hudson/Functions.java b/hudson-core/src/main/java/hudson/Functions.java
index e2adbe1..2bca767 100644
--- a/hudson-core/src/main/java/hudson/Functions.java
+++ b/hudson-core/src/main/java/hudson/Functions.java
@@ -1370,4 +1370,23 @@ public class Functions {
         });
         return templates.iterator().hasNext() ? templates.iterator().next() : null;
     }
+
+    /**
+     * Links cascading project to children project. Method updates all parent cascading projects starting
+     * from the specified cascadingProject.
+     *
+     * @param cascadingProject cascadingProject.
+     * @param childProjectName the name of child project name.
+     */
+    @SuppressWarnings("unchecked")
+    public static void linkCascadingProjectsToChild(Job cascadingProject, String childProjectName){
+        if(cascadingProject != null){
+            cascadingProject.addCascadingChildren(childProjectName);
+            if(cascadingProject.getCascadingProjectName() !=null){
+                linkCascadingProjectsToChild(Functions.getItemByName(Hudson.getInstance().getAllItems(cascadingProject.getClass()),
+                cascadingProject.getCascadingProjectName()), childProjectName);
+            }
+        }
+    }
 }
+
diff --git a/hudson-core/src/main/java/hudson/model/Job.java b/hudson-core/src/main/java/hudson/model/Job.java
index be07e24..9b9f69f 100644
--- a/hudson-core/src/main/java/hudson/model/Job.java
+++ b/hudson-core/src/main/java/hudson/model/Job.java
@@ -18,6 +18,7 @@
 package hudson.model;
 
 import hudson.Functions;
+import java.util.concurrent.CopyOnWriteArraySet;
 import org.eclipse.hudson.api.model.project.property.AxisListProjectProperty;
 import org.eclipse.hudson.api.model.project.property.BaseProjectProperty;
 import org.eclipse.hudson.api.model.project.property.BooleanProjectProperty;
@@ -179,6 +180,12 @@ public abstract class Job<JobT extends Job<JobT, RunT>, RunT extends Run<JobT, R
     private String cascadingProjectName;
 
     /**
+     * The list with the names of children cascading projects. Required to avoid cyclic references and
+     * to prohibition parent project "delete" action in case it has cascading children projects.
+     */
+    private Set<String> cascadingChildrenNames = new CopyOnWriteArraySet<String>();
+
+    /**
      * Selected cascadingProject for this job.
      */
     protected transient JobT cascadingProject;
@@ -316,6 +323,33 @@ public abstract class Job<JobT extends Job<JobT, RunT>, RunT extends Run<JobT, R
         return (SCMProjectProperty) getProperty(key, SCMProjectProperty.class);
     }
 
+    /**
+     * Returns list of cascading children project names.
+     *
+     * @return list of cascading children project names.
+     */
+    public Set<String> getCascadingChildrenNames() {
+        return cascadingChildrenNames;
+    }
+
+    /**
+     * Adds cascading child project name.
+     *
+     * @param cascadingChildrenName cascading children project name.
+     */
+    public void addCascadingChildren(String cascadingChildrenName) {
+        cascadingChildrenNames.add(cascadingChildrenName);
+    }
+
+    /**
+     * Remove cascading child project name.
+     *
+     * @param cascadingChildrenName cascading children project name.
+     */
+    public void removeCascadingChildren(String cascadingChildrenName) {
+        cascadingChildrenNames.remove(cascadingChildrenName);
+    }
+
     @Override
     public synchronized void save() throws IOException {
         if (null == allowSave) {
@@ -359,6 +393,9 @@ public abstract class Job<JobT extends Job<JobT, RunT>, RunT extends Run<JobT, R
         for (JobProperty p : properties)
             p.setOwner(this);
 
+        if(cascadingChildrenNames == null){
+             cascadingChildrenNames = new CopyOnWriteArraySet<String>();
+        }
         buildProjectProperties();
     }
 
@@ -1471,6 +1508,7 @@ public abstract class Job<JobT extends Job<JobT, RunT>, RunT extends Run<JobT, R
             this.cascadingProjectName = cascadingProjectName;
             this.cascadingProject = (JobT) Functions.getItemByName(Hudson.getInstance().getAllItems(this.getClass()),
                 cascadingProjectName);
+            Functions.linkCascadingProjectsToChild(cascadingProject, name);
             for (IProjectProperty property : jobProperties.values()) {
                 if (property instanceof ExternalProjectProperty) {
                     property.setOverridden(((ExternalProjectProperty) property).isModified());