Removing BeanListUnivariate example from test cases. Improving ListUnivariate Serialization Example.

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/math/trunk@141257 13f79535-47bb-0310-9956-ffa450edef68

src/experimental/org/apache/commons/math/stat/univariate/BeanListUnivariateImpl.java

@@ -15,7 +15,9 @@
  */
 package org.apache.commons.math.stat.univariate;
 
+import java.io.Serializable;
 import java.lang.reflect.InvocationTargetException;
+import java.util.ArrayList;
 import java.util.List;
 
 import org.apache.commons.beanutils.PropertyUtils;
@@ -30,15 +32,25 @@ import org.apache.commons.math.util.NumberTransformer;
  * univariate statistics for a List of Java Beans by property.  This 
  * implementation uses beanutils' PropertyUtils to get a simple, nested,
  * indexed, mapped, or combined property from an element of a List.
- * @version $Revision: 1.2 $ $Date: 2004/04/24 21:43:26 $
+ * @version $Revision: 1.1 $ $Date: 2004/06/01 21:28:06 $
  */
-public class BeanListUnivariateImpl extends ListUnivariateImpl {
+public class BeanListUnivariateImpl extends ListUnivariateImpl implements Serializable {
 
+    /** Serializable version identifier */
+    static final long serialVersionUID = -6428201899045406285L;
+    
 	/**
 	 * propertyName of the property to get from the bean
 	 */
 	private String propertyName;
 
+	/**
+	 * No argument Constructor
+	 */
+	public BeanListUnivariateImpl(){
+	    this(new ArrayList());
+	}
+	
 	/**
 	 * Construct a BeanListUnivariate with specified
 	 * backing list

src/experimental/org/apache/commons/math/stat/univariate/BeanListUnivariateImplTest.java

@@ -22,20 +22,34 @@ import junit.framework.Test;
 import junit.framework.TestCase;
 import junit.framework.TestSuite;
 
+import org.apache.commons.math.TestUtils;
 import org.apache.commons.math.stat.StatUtils;
-import org.apache.commons.math.beans.VitalStats;
-import org.apache.commons.math.beans.Patient;
 
 /**
  * Test cases for the {@link BeanListUnivariateImpl} class.
  *
- * @version $Revision: 1.2 $ $Date: 2004/04/24 21:43:26 $
+ * @version $Revision: 1.1 $ $Date: 2004/06/01 21:28:06 $
  */
 
 public final class BeanListUnivariateImplTest extends TestCase {
     
+    private double one = 1;
+    private float two = 2;
+    private int three = 3;
+    private double mean = 2;
+    private double sumSq = 18;
+    private double sum = 8;
+    private double var = 0.666666666666666666667;
+    private double std = Math.sqrt(var);
+    private double n = 4;
+    private double min = 1;
+    private double max = 3;
+    private double skewness = 0;
+    private double kurtosis = 0.5;
+    private double tolerance = 10E-15;
+    
+    
     private List patientList = null;
-    private double tolerance = Double.MIN_VALUE;
     
     public BeanListUnivariateImplTest(String name) {
         super(name);
@@ -121,5 +135,93 @@ public final class BeanListUnivariateImplTest extends TestCase {
         u.clear();
         assertEquals("total count",0,u.getN(),tolerance);      
     }
+    
+    /** test stats */
+    public void testSerialization() {
+        
+        double[] values = {35d, 23d, 42d};
+        
+        DescriptiveStatistics u = new BeanListUnivariateImpl( patientList, "age" ); 
+        assertEquals("total count",3,u.getN(),tolerance);
+        assertEquals("mean", StatUtils.mean(values), u.getMean(), tolerance);
+        assertEquals("min", StatUtils.min(values), u.getMin(), tolerance);
+        assertEquals("max", StatUtils.max(values), u.getMax(), tolerance);
+        assertEquals("var", StatUtils.variance(values), u.getVariance(), tolerance);   
+        
+        
+        DescriptiveStatistics u2 = (DescriptiveStatistics)TestUtils.serializeAndRecover(u); 
+        assertEquals("total count",3,u2.getN(),tolerance);
+        assertEquals("mean", StatUtils.mean(values), u2.getMean(), tolerance);
+        assertEquals("min", StatUtils.min(values), u2.getMin(), tolerance);
+        assertEquals("max", StatUtils.max(values), u2.getMax(), tolerance);
+        assertEquals("var", StatUtils.variance(values), u2.getVariance(), tolerance);   
+
+        u.clear();
+        assertEquals("total count",0,u.getN(),tolerance);    
+        
+        u2.clear();
+        assertEquals("total count",0,u2.getN(),tolerance);
+            
+    }    
+    
+    public class VitalStats {
+
+        private Double heartrate;
+        private Double temperature;
+
+        public VitalStats() {
+        }
+
+        public VitalStats(Double heartrate, Double temperature) {
+            setHeartRate( heartrate );
+            setTemperature( temperature );
+        }
+
+        public Double getHeartRate() {
+            return heartrate;
+        }
+
+        public void setHeartRate(Double heartrate) {
+            this.heartrate = heartrate;
+        }
+
+        public Double getTemperature() {
+            return temperature;
+        }
+
+        public void setTemperature(Double temperature) {
+            this.temperature = temperature;
+        }
+    }
+    
+    public class Patient {
+
+        private VitalStats vitalStats;
+        private Integer age;
+
+        public Patient() {
+        }
+
+        public Patient(VitalStats vitalStats, Integer age) {
+            setVitalStats( vitalStats );
+            setAge( age );
+        }
+
+        public VitalStats getVitalStats() {
+            return( vitalStats );
+        }
+
+        public void setVitalStats(VitalStats vitalStats) {
+            this.vitalStats = vitalStats;
+        }
+
+        public Integer getAge() {
+            return age;
+        }
+
+        public void setAge(Integer age) {
+            this.age = age;
+        }
+    }
 }
 

src/test/org/apache/commons/math/stat/univariate/ListUnivariateImpl.java

@@ -15,19 +15,24 @@
  */
 package org.apache.commons.math.stat.univariate;
 
+import java.io.Serializable;
+import java.util.ArrayList;
 import java.util.List;
 
 import org.apache.commons.math.MathException;
 import org.apache.commons.math.stat.univariate.UnivariateStatistic;
-import org.apache.commons.math.stat.univariate.AbstractDescriptiveStatistics;
+import org.apache.commons.math.stat.univariate.DescriptiveStatistics;
 import org.apache.commons.math.util.DefaultTransformer;
 import org.apache.commons.math.util.NumberTransformer;
 
 /**
- * @version $Revision: 1.3 $ $Date: 2004/05/23 00:33:41 $
+ * @version $Revision: 1.4 $ $Date: 2004/06/01 21:28:06 $
  */
-public class ListUnivariateImpl extends AbstractDescriptiveStatistics {
+public class ListUnivariateImpl extends DescriptiveStatistics implements Serializable {
 
+    /** Serializable version identifier */
+    static final long serialVersionUID = -8837442489133392138L;
+    
     /**
      * Holds a reference to a list - GENERICs are going to make
      * out lives easier here as we could only accept List<Number>
@@ -40,6 +45,13 @@ public class ListUnivariateImpl extends AbstractDescriptiveStatistics {
     /** hold the window size **/
     protected int windowSize = DescriptiveStatistics.INFINITE_WINDOW;
 
+	/**
+	 * No argument Constructor
+	 */
+	public ListUnivariateImpl(){
+	    this(new ArrayList());
+	}
+	
     /**
      * Construct a ListUnivariate with a specific List.
      * @param list The list that will back this DescriptiveStatistics
@@ -196,8 +208,8 @@ public class ListUnivariateImpl extends AbstractDescriptiveStatistics {
     	}
     }
     	
-    	public int getWindowSize() {
-    		return windowSize;
-    	}
+    public int getWindowSize() {
+    	return windowSize;
+    }
 
 }

src/test/org/apache/commons/math/stat/univariate/ListUnivariateImplTest.java

@@ -18,6 +18,8 @@ package org.apache.commons.math.stat.univariate;
 import java.util.ArrayList;
 import java.util.List;
 
+import org.apache.commons.math.TestUtils;
+
 import junit.framework.Test;
 import junit.framework.TestCase;
 import junit.framework.TestSuite;
@@ -25,10 +27,11 @@ import junit.framework.TestSuite;
 /**
  * Test cases for the {@link Univariate} class.
  *
- * @version $Revision: 1.2 $ $Date: 2004/05/23 00:56:15 $
+ * @version $Revision: 1.3 $ $Date: 2004/06/01 21:28:06 $
  */
 
 public final class ListUnivariateImplTest extends TestCase {
+    
     private double one = 1;
     private float two = 2;
     private int three = 3;
@@ -134,6 +137,40 @@ public final class ListUnivariateImplTest extends TestCase {
 
 
     }
+    
+    /** test stats */
+    public void testSerialization() {
+        
+        DescriptiveStatistics u = null;
+        
+        try {
+            u = DescriptiveStatistics.newInstance(ListUnivariateImpl.class);
+        } catch (InstantiationException e) {
+            fail(e.getMessage());
+        } catch (IllegalAccessException e) {
+            fail(e.getMessage());
+        }
+        
+        assertEquals("total count",0,u.getN(),tolerance);
+        u.addValue(one);
+        u.addValue(two);
+        
+        DescriptiveStatistics u2 = (DescriptiveStatistics)TestUtils.serializeAndRecover(u); 
+ 
+        u2.addValue(two);
+        u2.addValue(three);
+        
+        assertEquals("N",n,u2.getN(),tolerance);
+        assertEquals("sum",sum,u2.getSum(),tolerance);
+        assertEquals("sumsq",sumSq,u2.getSumsq(),tolerance);
+        assertEquals("var",var,u2.getVariance(),tolerance);
+        assertEquals("std",std,u2.getStandardDeviation(),tolerance);
+        assertEquals("mean",mean,u2.getMean(),tolerance);
+        assertEquals("min",min,u2.getMin(),tolerance);
+        assertEquals("max",max,u2.getMax(),tolerance);
 
+        u2.clear();
+        assertEquals("total count",0,u2.getN(),tolerance);    
+    }       
 }