[Jboss-svn-commits] JBL Code SVN: r2047 - in trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools: . natural/grammar parser

[<jbo...@li...>]

Author: mic...@jb...
Date: 2006-01-09 19:54:41 -0500 (Mon, 09 Jan 2006)
New Revision: 2047

Added:
   trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/
   trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/Demo.java
   trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/ExpressionExpander.java
   trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/PseudoNaturalExpander.java
Modified:
   trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/natural/grammar/SimpleGrammar.java
Log:
grammar from a properties object

Modified: trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/natural/grammar/SimpleGrammar.java
===================================================================
--- trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/natural/grammar/SimpleGrammar.java	2006-01-09 23:48:15 UTC (rev 2046)
+++ trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/natural/grammar/SimpleGrammar.java	2006-01-10 00:54:41 UTC (rev 2047)
@@ -24,6 +24,10 @@
         dictionary = new HashMap();
     }
     
+    public SimpleGrammar(Properties props) {
+        dictionary = props;
+    }
+    
     public void addToDictionary(String token, String expression) {
         if (dictionary.containsKey(token)) {
             throw new NaturalLanguageException("The token [" + token + "] is already in the dictionary.");

Added: trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/Demo.java
===================================================================
--- trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/Demo.java	2006-01-09 23:48:15 UTC (rev 2046)
+++ trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/Demo.java	2006-01-10 00:54:41 UTC (rev 2047)
@@ -0,0 +1,32 @@
+package org.drools.parser;
+
+import java.util.Properties;
+
+public class Demo {
+
+    /**
+     * @param args
+     */
+    public static void main(String[] args) {
+        Properties grammar = new Properties();
+        grammar.setProperty("is located in", "${left}.getLocation().equals(\"${right}\")");
+        grammar.setProperty("before", "${left}.compareTo(${right}) < 0");
+        grammar.setProperty("name is", "${left}( name=='${right}' )");
+        grammar.setProperty("with attributes", "${left}( ${right} )");
+        grammar.setProperty("is", "==");
+        grammar.setProperty("and", "&&");
+        grammar.setProperty("or", "||");
+        
+        ExpressionExpander expander = new PseudoNaturalExpander(grammar);
+        
+        
+        System.out.println(expander.expandExpression("bob is located in atlanta"));
+        System.out.println(expander.expandExpression("event before Today"));
+        System.out.println(expander.expandExpression("Persons name is Michael"));
+        System.out.println(expander.expandExpression("Person with attributes [age < 21]"));
+        System.out.println(expander.expandExpression("Person ( age is 21 and city is Atlanta or height is 160 )"));
+        
+
+    }
+
+}


Property changes on: trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/Demo.java
___________________________________________________________________
Name: svn:eol-style
   + native

Added: trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/ExpressionExpander.java
===================================================================
--- trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/ExpressionExpander.java	2006-01-09 23:48:15 UTC (rev 2046)
+++ trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/ExpressionExpander.java	2006-01-10 00:54:41 UTC (rev 2047)
@@ -0,0 +1,8 @@
+package org.drools.parser;
+
+public interface ExpressionExpander {
+
+    String expandExpression(String expr);
+    boolean isExpanded(String expression);
+    
+}


Property changes on: trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/ExpressionExpander.java
___________________________________________________________________
Name: svn:eol-style
   + native

Added: trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/PseudoNaturalExpander.java
===================================================================
--- trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/PseudoNaturalExpander.java	2006-01-09 23:48:15 UTC (rev 2046)
+++ trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/PseudoNaturalExpander.java	2006-01-10 00:54:41 UTC (rev 2047)
@@ -0,0 +1,31 @@
+package org.drools.parser;
+
+import java.util.Properties;
+
+import org.drools.natural.NaturalLanguageCompiler;
+import org.drools.natural.grammar.SimpleGrammar;
+
+public class PseudoNaturalExpander
+    implements
+    ExpressionExpander {
+
+    private NaturalLanguageCompiler compiler;
+    
+    public PseudoNaturalExpander(Properties grammar) {
+        SimpleGrammar g = new SimpleGrammar(grammar);
+        compiler = new NaturalLanguageCompiler(g);
+    }
+    
+    public String expandExpression(String expr) {        
+        return compiler.compileNaturalExpression(expr);
+    }
+
+    public boolean isExpanded(String expression) {
+        if (expression.startsWith("--")) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+}


Property changes on: trunk/labs/jbossrules/drools-natural-dsl/src/main/java/org/drools/parser/PseudoNaturalExpander.java
___________________________________________________________________
Name: svn:eol-style
   + native