1 files changed, 106 insertions, 0 deletions
diff --git a/java/src/Ice/DoubleOptional.java b/java/src/Ice/DoubleOptional.java
new file mode 100644
index 00000000000..d9b78066616
--- /dev/null
+++ b/java/src/Ice/DoubleOptional.java
@@ -0,0 +1,106 @@
+// **********************************************************************
+//
+// Copyright (c) 2003-2012 ZeroC, Inc. All rights reserved.
+//
+// This copy of Ice is licensed to you under the terms described in the
+// ICE_LICENSE file included in this distribution.
+//
+// **********************************************************************
+
+package Ice;
+
+/**
+ * Manages an optional double parameter.
+ **/
+public class DoubleOptional
+{
+    /**
+     * The value defaults to unset.
+     **/
+    public DoubleOptional()
+    {
+        _isSet = false;
+    }
+
+    /**
+     * Sets the value to the given argument.
+     *
+     * @param v The initial value.
+     **/
+    public DoubleOptional(double v)
+    {
+        _value = v;
+        _isSet = true;
+    }
+
+    /**
+     * Sets the value to a shallow copy of the given optional.
+     *
+     * @param opt The source value.
+     **/
+    public DoubleOptional(DoubleOptional opt)
+    {
+        _value = opt._value;
+        _isSet = opt._isSet;
+    }
+
+    /**
+     * Obtains the current value.
+     *
+     * @return The current value.
+     * @throws IllegalStateException If the value is not set.
+     **/
+    public double get()
+    {
+        if(!_isSet)
+        {
+            throw new IllegalStateException("no value is set");
+        }
+        return _value;
+    }
+
+    /**
+     * Sets the value to the given argument.
+     *
+     * @param v The new value.
+     **/
+    public void set(double v)
+    {
+        _value = v;
+        _isSet = true;
+    }
+
+    /**
+     * If the given argument is set, this optional is set to a shallow copy of the argument,
+     * otherwise this optional is unset.
+     *
+     * @param opt The source value.
+     **/
+    public void set(DoubleOptional opt)
+    {
+        _value = opt._value;
+        _isSet = opt._isSet;
+    }
+
+    /**
+     * Determines whether the value is set.
+     *
+     * @return True if the value is set, false otherwise.
+     **/
+    public boolean isSet()
+    {
+        return _isSet;
+    }
+
+    /**
+     * Unsets this value.
+     **/
+    public void clear()
+    {
+        _isSet = false;
+        _value = 0;
+    }
+
+    private double _value;
+    private boolean _isSet;
+}