--- /dev/null
+/*
+ * Copyright (c) 2003-2005 The BISON Project
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+package peersim.vector;
+
+import peersim.config.*;
+import peersim.core.*;
+import peersim.dynamics.*;
+
+/**
+ * Initializes the values drawing uniform random samples from the range
+ * [{@value #PAR_MIN}, {@value #PAR_MAX}[.
+ * @see VectControl
+ * @see peersim.vector
+ */
+public class UniformDistribution extends VectControl implements NodeInitializer
+{
+
+//--------------------------------------------------------------------------
+//Parameter names
+//--------------------------------------------------------------------------
+
+/**
+ * The upper bound of the uniform random variable, exclusive.
+ * @config
+ */
+private static final String PAR_MAX = "max";
+
+/**
+ * The lower bound of the uniform
+ * random variable, inclusive. Defaults to -{@value #PAR_MAX}.
+ * @config
+ */
+private static final String PAR_MIN = "min";
+
+// --------------------------------------------------------------------------
+// Fields
+// --------------------------------------------------------------------------
+
+/** Minimum value */
+private final Number min;
+
+/** Maximum value */
+private final Number max;
+
+// --------------------------------------------------------------------------
+// Initialization
+// --------------------------------------------------------------------------
+
+/**
+ * Standard constructor that reads the configuration parameters.
+ * Invoked by the simulation engine.
+ * @param prefix the configuration prefix for this class
+ */
+public UniformDistribution(String prefix)
+{
+ super(prefix);
+
+ // Read parameters based on type
+ if (setter.isInteger()) {
+ max=Long.valueOf(Configuration.getLong(prefix + "." + PAR_MAX));
+ min=Long.valueOf(Configuration.getLong(prefix + "." + PAR_MIN,
+ -max.longValue()));
+ } else { // we know it's double or float
+ max = new Double(Configuration.getDouble(prefix+"."+PAR_MAX));
+ min = new Double(Configuration.getDouble(prefix+"."+PAR_MIN,
+ -max.doubleValue()));
+ }
+}
+
+// --------------------------------------------------------------------------
+// Methods
+// --------------------------------------------------------------------------
+
+/**
+ * Initializes the values drawing uniform random samples from the range
+ * [{@value #PAR_MIN}, {@value #PAR_MAX}[.
+ * @return always false
+ */
+public boolean execute() {
+
+ if(setter.isInteger())
+ {
+ long d = max.longValue() - min.longValue();
+ for (int i = 0; i < Network.size(); ++i)
+ {
+ setter.set(i,CommonState.r.nextLong(d)+min.longValue());
+ }
+ }
+ else
+ {
+ double d = max.doubleValue() - min.doubleValue();
+ for (int i = 0; i < Network.size(); ++i)
+ {
+ setter.set(i,CommonState.r.nextDouble()*d+
+ min.doubleValue());
+ }
+ }
+
+ return false;
+}
+
+// --------------------------------------------------------------------------
+
+/**
+ * Initializes the value drawing a uniform random sample from the range
+ * [{@value #PAR_MIN}, {@value #PAR_MAX}[.
+ * @param n the node to initialize
+ */
+public void initialize(Node n) {
+
+ if( setter.isInteger() )
+ {
+ long d = max.longValue() - min.longValue();
+ setter.set(n,CommonState.r.nextLong(d) + min.longValue());
+ }
+ else
+ {
+ double d = max.doubleValue() - min.doubleValue();
+ setter.set(n,CommonState.r.nextDouble()*d);
+ }
+}
+
+// --------------------------------------------------------------------------
+
+}
