[jbosscache-commits] JBoss Cache SVN: r7473 - core/branches/flat/src/main/java/org/jboss/starobrno/util.

[jbosscache-commits at lists.jboss.org]

Author: manik.surtani at jboss.com
Date: 2009-01-14 11:55:34 -0500 (Wed, 14 Jan 2009)
New Revision: 7473

Added:
   core/branches/flat/src/main/java/org/jboss/starobrno/util/TypedProperties.java
Log:
Utility to read typed properties

Added: core/branches/flat/src/main/java/org/jboss/starobrno/util/TypedProperties.java
===================================================================
--- core/branches/flat/src/main/java/org/jboss/starobrno/util/TypedProperties.java	                        (rev 0)
+++ core/branches/flat/src/main/java/org/jboss/starobrno/util/TypedProperties.java	2009-01-14 16:55:34 UTC (rev 7473)
@@ -0,0 +1,76 @@
+package org.jboss.starobrno.util;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+import java.util.Properties;
+
+/**
+ * Type-aware properties.  Extends the JDK {@link Properties} class to provide accessors that convert values to certain
+ * types, using default values if a conversion is not possible.
+ *
+ * @author Manik Surtani
+ */
+public class TypedProperties extends Properties
+{
+   private static final Log log = LogFactory.getLog(TypedProperties.class);
+
+   public TypedProperties(Properties p)
+   {
+      if (p != null) putAll(p);
+   }
+
+   public int getIntProperty(String key, int defaultValue)
+   {
+      String value = getProperty(key);
+      if (value == null) return defaultValue;
+      value = value.trim();
+      if (value.length() == 0) return defaultValue;
+
+      try
+      {
+         return Integer.parseInt(value);
+      }
+      catch (NumberFormatException nfe)
+      {
+         log.warn("Unable to convert string property [" + value + "] to an int!  Using default value of " + defaultValue);
+         return defaultValue;
+      }
+   }
+
+   public long getLongProperty(String key, long defaultValue)
+   {
+      String value = getProperty(key);
+      if (value == null) return defaultValue;
+      value = value.trim();
+      if (value.length() == 0) return defaultValue;
+
+      try
+      {
+         return Long.parseLong(value);
+      }
+      catch (NumberFormatException nfe)
+      {
+         log.warn("Unable to convert string property [" + value + "] to a long!  Using default value of " + defaultValue);
+         return defaultValue;
+      }
+   }
+
+   public boolean getBooleanProperty(String key, boolean defaultValue)
+   {
+      String value = getProperty(key);
+      if (value == null) return defaultValue;
+      value = value.trim();
+      if (value.length() == 0) return defaultValue;
+
+      try
+      {
+         return Boolean.parseBoolean(value);
+      }
+      catch (Exception e)
+      {
+         log.warn("Unable to convert string property [" + value + "] to a boolean!  Using default value of " + defaultValue);
+         return defaultValue;
+      }
+   }
+}