1 files changed, 66 insertions, 0 deletions
diff --git a/ant/ant14/com/vladium/emma/ant/NestedTask.java b/ant/ant14/com/vladium/emma/ant/NestedTask.java
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+++ b/ant/ant14/com/vladium/emma/ant/NestedTask.java
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+/* Copyright (C) 2003 Vladimir Roubtsov. All rights reserved.
+ * 
+ * This program and the accompanying materials are made available under
+ * the terms of the Common Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * $Id: NestedTask.java,v 1.1.1.1.2.1 2004/07/08 10:52:10 vlad_r Exp $
+ */
+package com.vladium.emma.ant;
+
+import com.vladium.util.IProperties;
+
+// ----------------------------------------------------------------------------
+/**
+ * @author Vlad Roubtsov, (C) 2003
+ */
+public
+abstract class NestedTask extends SuppressableTask
+{
+    // public: ................................................................
+    
+    // protected: .............................................................
+    
+    
+    protected NestedTask (final SuppressableTask parent)
+    {
+        if (parent == null)
+            throw new IllegalArgumentException ("null input: parent");
+        
+        m_parent = parent;
+    }
+
+    /**
+     * Overrides {@link SuppressableTask#getTaskSettings()} to mix in parent
+     * task settings as the base settings. 
+     */
+    protected final IProperties getTaskSettings ()
+    {
+        final IProperties parentSettings = m_parent != null
+            ? m_parent.getTaskSettings ()
+            : null;
+        
+        final IProperties taskOverrides = super.getTaskSettings ();
+        
+        // task settings are always more specific than parent settings, but attention
+        // needs to be paid to horizontal inheritance:
+        
+        if (parentSettings == null)
+            return taskOverrides;
+        else
+        {
+            final IProperties settings = IProperties.Factory.combine (taskOverrides, parentSettings);
+        
+            return settings;
+        }
+    }
+
+    
+    protected final SuppressableTask m_parent;
+
+    // package: ...............................................................
+    
+    // private: ...............................................................
+    
+} // end of class
+// ----------------------------------------------------------------------------
+\ No newline at end of file