Package org.drools.compiler.lang.descr

Examples of org.drools.compiler.lang.descr.ConstraintConnectiveDescr

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    @Test
    public void testDumpBindings3() throws Exception {
        String input = "( $a : a > $b : b[10].prop || 10 != 20 ) && $x : someMethod(10)";
        String expected = "( a > b[10].prop || 10 != 20 )";

        ConstraintConnectiveDescr descr = parse( input );
        String result = dumper.dump( descr );

        assertEquals( expected,
                      result );
    }
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    @Test
    public void testDumpBindings4() throws Exception {
        String input = "( $a : a > $b : b[10].prop || $x : someMethod(10) ) && 10 != 20";
        String expected = "( a > b[10].prop ) && 10 != 20";

        ConstraintConnectiveDescr descr = parse( input );
        String result = dumper.dump( descr );

        assertEquals( expected,
                      result );
    }
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    @Test
    public void testDumpBindingsWithRestriction() throws Exception {
        String input = "$x : age > 10 && < 20 || > 30";
        String expected = "( age > 10 && age < 20 || age > 30 )";

        ConstraintConnectiveDescr descr = parse( input );
        MVELDumperContext ctx = new MVELDumperContext();
        String result = dumper.dump( descr,
                                     ctx );

        assertEquals( expected,
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    @Test
    public void testDumpBindingsComplexOp() throws Exception {
        String input = "$x : age in (10, 20, $someVal)";
        String expected = "( age == 10 || age == 20 || age == $someVal )";

        ConstraintConnectiveDescr descr = parse( input );
        MVELDumperContext ctx = new MVELDumperContext();
        String result = dumper.dump( descr,
                                     ctx );

        assertEquals( expected,
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    @Test
    public void testDumpBindingsComplexOp2() throws Exception {
        String input = "$x : age not in (10, 20, $someVal)";
        String expected = "age != 10 && age != 20 && age != $someVal";

        ConstraintConnectiveDescr descr = parse( input );
        MVELDumperContext ctx = new MVELDumperContext();
        String result = dumper.dump( descr,
                                     ctx );

        assertEquals( expected,
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    public void testProcessInlineCast() throws Exception {
        String expr = "field1#Class.field2";
        String expectedInstanceof = "field1 instanceof Class";
        String expectedcasted = "((Class)field1).field2";
        AtomicExprDescr atomicExpr = new AtomicExprDescr(expr);
        ConstraintConnectiveDescr ccd = new ConstraintConnectiveDescr( );
        ccd.addDescr( atomicExpr );
        String[] instanceofAndCastedExpr = dumper.processImplicitConstraints(expr, atomicExpr, ccd, ccd.getDescrs().indexOf( atomicExpr ), null);
        assertEquals( 2, ccd.getDescrs().size() );
        assertEquals( expectedInstanceof, ccd.getDescrs().get( 0 ).toString() );
        assertEquals(expectedcasted, atomicExpr.getRewrittenExpression());

        expr = "field1#Class1.field2#Class2.field3";
        String expectedInstanceof1 = "field1 instanceof Class1";
        String expectedInstanceof2 = "((Class1)field1).field2 instanceof Class2";
        expectedcasted = "((Class2)((Class1)field1).field2).field3";
        atomicExpr = new AtomicExprDescr(expr);
        ccd = new ConstraintConnectiveDescr( );
        instanceofAndCastedExpr = dumper.processImplicitConstraints(expr, atomicExpr, ccd, ccd.getDescrs().indexOf( atomicExpr ), null);
        assertEquals( expectedInstanceof1, ccd.getDescrs().get( 0 ).toString() );
        assertEquals( expectedInstanceof2, ccd.getDescrs().get( 1 ).toString() );
        assertEquals(expectedcasted, instanceofAndCastedExpr[1]);
        assertEquals(expectedcasted, atomicExpr.getRewrittenExpression());
    }
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    public void testProcessNullSafeDereferencing() throws Exception {
        String expr = "field1!.field2";
        String expectedNullCheck = "field1 != null";
        String expectedExpr = "field1.field2";
        AtomicExprDescr atomicExpr = new AtomicExprDescr(expr);
        ConstraintConnectiveDescr ccd = new ConstraintConnectiveDescr( );
        String[] nullCheckAndExpr = dumper.processImplicitConstraints( expr, atomicExpr, ccd, ccd.getDescrs().indexOf( atomicExpr ), null );
        assertEquals( expectedNullCheck, ccd.getDescrs().get( 0 ).toString() );
        assertEquals(expectedExpr, nullCheckAndExpr[1]);
        assertEquals(expectedExpr, atomicExpr.getRewrittenExpression());

        expr = "field1!.field2!.field3";
        String expectedNullCheck1 = "field1 != null";
        String expectedNullCheck2 = "field1.field2 != null";
        expectedExpr = "field1.field2.field3";
        atomicExpr = new AtomicExprDescr(expr);
        ccd = new ConstraintConnectiveDescr( );
        nullCheckAndExpr = dumper.processImplicitConstraints( expr, atomicExpr, ccd, ccd.getDescrs().indexOf( atomicExpr ), null );
        assertEquals( expectedNullCheck1, ccd.getDescrs().get( 0 ).toString() );
        assertEquals( expectedNullCheck2, ccd.getDescrs().get( 1 ).toString() );
        assertEquals(expectedExpr, nullCheckAndExpr[1]);
        assertEquals(expectedExpr, atomicExpr.getRewrittenExpression());
    }
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    public void testProcessImplicitConstraints() throws Exception {
        String expr = "field1#Class!.field2";
        String expectedConstraints = "field1 instanceof Class";
        String expectedExpr = "((Class)field1).field2";
        AtomicExprDescr atomicExpr = new AtomicExprDescr(expr);
        ConstraintConnectiveDescr ccd = new ConstraintConnectiveDescr( );
        String[] constraintsAndExpr = dumper.processImplicitConstraints( expr, atomicExpr, ccd, ccd.getDescrs().indexOf( atomicExpr ), null );
        assertEquals( expectedConstraints, ccd.getDescrs().get( 0 ).toString() );
        assertEquals(expectedExpr, constraintsAndExpr[1]);
        assertEquals(expectedExpr, atomicExpr.getRewrittenExpression());

        expr = "field1!.field2#Class.field3";
        String expectedConstraints1 = "field1 != null";
        String expectedConstraints2 = "field1.field2 instanceof Class";
        expectedExpr = "((Class)field1.field2).field3";
        atomicExpr = new AtomicExprDescr(expr);
        ccd = new ConstraintConnectiveDescr( );
        constraintsAndExpr = dumper.processImplicitConstraints( expr, atomicExpr, ccd, ccd.getDescrs().indexOf( atomicExpr ), null );
        assertEquals( expectedConstraints1, ccd.getDescrs().get( 0 ).toString() );
        assertEquals( expectedConstraints2, ccd.getDescrs().get( 1 ).toString() );
        assertEquals(expectedExpr, constraintsAndExpr[1]);
        assertEquals(expectedExpr, atomicExpr.getRewrittenExpression());

        expr = "field1#Class.field2!.field3";
        expectedConstraints1 = "field1 instanceof Class";
        expectedConstraints2 = "((Class)field1).field2 != null";
        expectedExpr = "((Class)field1).field2.field3";
        atomicExpr = new AtomicExprDescr(expr);
        ccd = new ConstraintConnectiveDescr( );
        constraintsAndExpr = dumper.processImplicitConstraints( expr, atomicExpr, ccd, ccd.getDescrs().indexOf( atomicExpr ), null );
        assertEquals( expectedConstraints1, ccd.getDescrs().get( 0 ).toString() );
        assertEquals( expectedConstraints2, ccd.getDescrs().get( 1 ).toString() );
        assertEquals(expectedExpr, constraintsAndExpr[1]);
        assertEquals(expectedExpr, atomicExpr.getRewrittenExpression());
    }
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        assertEquals(expectedExpr, atomicExpr.getRewrittenExpression());
    }

    public ConstraintConnectiveDescr parse( final String constraint ) {
        DrlExprParser parser = new DrlExprParser(LanguageLevelOption.DRL6);
        ConstraintConnectiveDescr result = parser.parse( constraint );
        assertFalse( parser.getErrors().toString(),
                     parser.hasErrors() );

        return result;
    }
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          pushFollow(FOLLOW_conditionalAndExpression_in_conditionalOrExpression1147);
          right=conditionalAndExpression();
          state._fsp--;
          if (state.failed) return result;
          if ( state.backtracking==0 ) { if( buildDescr  ) {
                         ConstraintConnectiveDescr descr = ConstraintConnectiveDescr.newOr();
                         descr.addOrMerge( result );
                         descr.addOrMerge( right );
                         if ( args != null ) { descr.addAnnotation( args ); }
                         result = descr;
                     }
                   }
          }
          break;
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Related Classes of org.drools.compiler.lang.descr.ConstraintConnectiveDescr

  • org.drools.compiler.compiler.DrlExprParser
  • org.drools.compiler.lang.DRL5Expressions
  • org.drools.compiler.lang.DRL6Expressions
  • org.drools.compiler.lang.DRLExprParserTest
  • org.drools.compiler.lang.MVELDumper
  • org.drools.compiler.lang.MVELDumperTest
  • org.drools.compiler.rule.builder.PatternBuilder
  • org.drools.compiler.rule.builder.QueryElementBuilder
  • org.drools.verifier.visitor.ExprConstraintDescrVisitor
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