[jboss-svn-commits] JBL Code SVN: r11346 - labs/jbossrules/trunk/drools-core/src/main/java/org/drools/util.

[jboss-svn-commits at lists.jboss.org]

Author: michael.neale at jboss.com
Date: 2007-04-26 03:32:02 -0400 (Thu, 26 Apr 2007)
New Revision: 11346

Added:
   labs/jbossrules/trunk/drools-core/src/main/java/org/drools/util/BinaryRuleBaseLoader.java
Log:
JBRULES-773 BRMS assembler

Added: labs/jbossrules/trunk/drools-core/src/main/java/org/drools/util/BinaryRuleBaseLoader.java
===================================================================
--- labs/jbossrules/trunk/drools-core/src/main/java/org/drools/util/BinaryRuleBaseLoader.java	                        (rev 0)
+++ labs/jbossrules/trunk/drools-core/src/main/java/org/drools/util/BinaryRuleBaseLoader.java	2007-04-26 07:32:02 UTC (rev 11346)
@@ -0,0 +1,82 @@
+package org.drools.util;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.ObjectInputStream;
+
+import org.drools.RuleBase;
+import org.drools.RuleBaseFactory;
+import org.drools.RuntimeDroolsException;
+import org.drools.rule.Package;
+
+/**
+ * This loads up rulebases from binary packages.
+ * Can work with an existing or a new rulebase.
+ * This is useful for deployment.
+ * 
+ * @author Michael Neale
+ */
+public class BinaryRuleBaseLoader {
+
+    private RuleBase ruleBase;
+
+    /**
+     * This will create a new default rulebase (which is initially empty).
+     * 
+     */
+    public BinaryRuleBaseLoader() {
+        this( RuleBaseFactory.newRuleBase() );
+    }
+
+    /**
+     * This will add any binary packages to the rulebase.
+     */
+    public BinaryRuleBaseLoader(
+                                RuleBase rb) {
+        this.ruleBase = rb;
+    }
+
+    /**
+     * This will add the BINARY package to the rulebase.
+     * @param in An input stream to the serialized package.
+     */
+    public void addPackage(InputStream in) {
+
+        try {
+            ObjectInputStream oin = new ObjectInputStream( in );
+            Object opkg = oin.readObject();
+            if (! (opkg instanceof Package)) {
+                throw new IllegalArgumentException("Can only add instances of org.drools.rule.Package to a rulebase instance.");
+            }
+            Package binPkg = (Package) opkg;
+            
+            if ( !binPkg.isValid() ) {
+                throw new IllegalArgumentException( "Can't add a non valid package to a rulebase." );
+            }
+
+            try {
+                this.ruleBase.addPackage( binPkg );
+            } catch ( Exception e ) {
+                throw new RuntimeDroolsException( "Unable to add package to the rulebase.",
+                                                  e );
+            }
+
+        } catch ( IOException e ) {
+            throw new RuntimeDroolsException( e );
+        } catch ( ClassNotFoundException e ) {
+            throw new RuntimeDroolsException( e );
+        } finally {
+            try {
+                in.close();
+            } catch ( IOException e ) {
+                throw new RuntimeException( e );
+            }
+        }
+
+    }
+
+    public RuleBase getRuleBase() {
+        return this.ruleBase;
+    }
+
+}


Property changes on: labs/jbossrules/trunk/drools-core/src/main/java/org/drools/util/BinaryRuleBaseLoader.java
___________________________________________________________________
Name: svn:eol-style
   + native