Package org.drools.lang.descr

Examples of org.drools.lang.descr.RelationalExprDescr

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                  state._fsp--;
                  if (state.failed) return result;
                  if ( state.backtracking==0 ) {
                     if( buildDescr  ) {
                                   result = new RelationalExprDescr( (op!=null?op.getText():null), false, null, left, right );
                               }
                            
                  }

                  }
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                    state._fsp--;
                    if (state.failed) return result;
                    if ( state.backtracking==0 ) {
                       if( buildDescr  ) {
                                     result = new RelationalExprDescr( (op!=null?input.toString(op.start,op.stop):null), false, null, left, new AtomicExprDescr((right!=null?input.toString(right.start,right.stop):null)) );
                                 }
                              
                    }

                    }
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                    state._fsp--;
                    if (state.failed) return result;
                    if ( state.backtracking==0 ) {
                         descr = ConstraintConnectiveDescr.newAnd();
                                  RelationalExprDescr rel = new RelationalExprDescr( "!=", false, null, leftDescr, (e1!=null?e1.result:null) );
                                  descr.addOrMerge( rel );
                                  result = descr;
                             
                    }
                    // src/main/resources/org/drools/lang/DRLExpressions.g:265:7: ( COMMA e2= expression )*
                    loop27:
                    do {
                        int alt27=2;
                        int LA27_0 = input.LA(1);

                        if ( (LA27_0==COMMA) ) {
                            alt27=1;
                        }


                        switch (alt27) {
                      case 1 :
                          // src/main/resources/org/drools/lang/DRLExpressions.g:265:8: COMMA e2= expression
                          {
                          match(input,COMMA,FOLLOW_COMMA_in_inExpression1331); if (state.failed) return result;
                          pushFollow(FOLLOW_expression_in_inExpression1335);
                          e2=expression();

                          state._fsp--;
                          if (state.failed) return result;
                          if ( state.backtracking==0 ) {
                               RelationalExprDescr rel = new RelationalExprDescr( "!=", false, null, leftDescr, (e2!=null?e2.result:null) );
                                        descr.addOrMerge( rel );
                                   
                          }

                          }
                          break;

                      default :
                          break loop27;
                        }
                    } while (true);

                    match(input,RIGHT_PAREN,FOLLOW_RIGHT_PAREN_in_inExpression1356); if (state.failed) return result;

                    }
                    break;
                case 2 :
                    // src/main/resources/org/drools/lang/DRLExpressions.g:270:7: in= in_key LEFT_PAREN e1= expression ( COMMA e2= expression )* RIGHT_PAREN
                    {
                    pushFollow(FOLLOW_in_key_in_inExpression1366);
                    in_key();

                    state._fsp--;
                    if (state.failed) return result;
                    match(input,LEFT_PAREN,FOLLOW_LEFT_PAREN_in_inExpression1368); if (state.failed) return result;
                    pushFollow(FOLLOW_expression_in_inExpression1372);
                    e1=expression();

                    state._fsp--;
                    if (state.failed) return result;
                    if ( state.backtracking==0 ) {
                         descr = ConstraintConnectiveDescr.newOr();
                                  RelationalExprDescr rel = new RelationalExprDescr( "==", false, null, leftDescr, (e1!=null?e1.result:null) );
                                  descr.addOrMerge( rel );
                                  result = descr;
                             
                    }
                    // src/main/resources/org/drools/lang/DRLExpressions.g:276:7: ( COMMA e2= expression )*
                    loop28:
                    do {
                        int alt28=2;
                        int LA28_0 = input.LA(1);

                        if ( (LA28_0==COMMA) ) {
                            alt28=1;
                        }


                        switch (alt28) {
                      case 1 :
                          // src/main/resources/org/drools/lang/DRLExpressions.g:276:8: COMMA e2= expression
                          {
                          match(input,COMMA,FOLLOW_COMMA_in_inExpression1392); if (state.failed) return result;
                          pushFollow(FOLLOW_expression_in_inExpression1396);
                          e2=expression();

                          state._fsp--;
                          if (state.failed) return result;
                          if ( state.backtracking==0 ) {
                               RelationalExprDescr rel = new RelationalExprDescr( "==", false, null, leftDescr, (e2!=null?e2.result:null) );
                                        descr.addOrMerge( rel );
                                   
                          }

                          }
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                                     BaseDescr descr = ( (value!=null?value.result:null) != null &&
                                                       ( (!((value!=null?value.result:null) instanceof AtomicExprDescr)) ||
                                                         ((value!=null?input.toString(value.start,value.stop):null).equals(((AtomicExprDescr)(value!=null?value.result:null)).getExpression())) )) ?
                                              (value!=null?value.result:null) :
                                              new AtomicExprDescr( (value!=null?input.toString(value.start,value.stop):null) ) ;
                                     result = new RelationalExprDescr( (op!=null?op.opr:null), (op!=null?op.negated:false), (op!=null?op.params:null), ((relationalExpression_scope)relationalExpression_stack.peek()).lsd, descr );
                               if( ((relationalExpression_scope)relationalExpression_stack.peek()).lsd instanceof BindingDescr ) {
                                   ((relationalExpression_scope)relationalExpression_stack.peek()).lsd = new AtomicExprDescr( ((BindingDescr)((relationalExpression_scope)relationalExpression_stack.peek()).lsd).getExpression() );
                               }
                                 }
                              
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        }

        int i = 0;
        StringBuilder sb = new StringBuilder();
        for (BaseDescr subDescr : subDescrs) {
            RelationalExprDescr relDescr = (RelationalExprDescr)subDescr;
            String[] values = new String[2];
            findExpressionValues(relDescr, values);
            String normalizedExpr;

            if (!getExprBindings(context, pattern, values[1]).isConstant()) {
                normalizedExpr = subExprs[i++];
            } else {
                InternalReadAccessor extractor = getFieldReadAccessor( context, relDescr, pattern.getObjectType(), values[0], null, true );
                if (extractor == null) {
                    normalizedExpr = subExprs[i++];
                } else {
                    ValueType vtype = extractor.getValueType();
                    LiteralRestrictionDescr restrictionDescr = new LiteralRestrictionDescr( relDescr.getOperator(),
                                                                                            relDescr.isNegated(),
                                                                                            relDescr.getParameters(),
                                                                                            values[1],
                                                                                            LiteralRestrictionDescr.TYPE_STRING );
                    normalizedExpr = normalizeMVELLiteralExpression( vtype,
                                                                     getFieldValue(context, vtype, restrictionDescr),
                                                                     subExprs[i++],
                                                                     values[0],
                                                                     relDescr.getOperator(),
                                                                     values[1],
                                                                     restrictionDescr );
                }
            }
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        String className = classAndField[0];
        String field2 = classAndField[1];

        String castedExpression = "((" + className + ")" + field1 + ")." + field2 + (sharpPos2 > 0 ? expr.substring(sharpPos2) : "");

        RelationalExprDescr check = new RelationalExprDescr( "instanceof",
                false,
                null,
                new AtomicExprDescr( field1 ),
                new AtomicExprDescr( className ) );

        String innerCheck = "";
        if ( ccd.getConnective() == ConnectiveType.AND || ccd.getConnective() == ConnectiveType.INC_AND ) {
            ccd.getDescrs().add( childIdx, check );
        } else {
            BaseDescr desc = ccd.getDescrs().get( parentIdx );
            if ( desc instanceof ConstraintConnectiveDescr ) {
                ((ConstraintConnectiveDescr) desc).getDescrs().add( childIdx, check );
            } else {
                ConstraintConnectiveDescr localAnd = new ConstraintConnectiveDescr( ConnectiveType.AND );
                BaseDescr original = ccd.getDescrs().remove( parentIdx );
                localAnd.getDescrs().add( check );
                localAnd.getDescrs().add( original );
                ccd.getDescrs().add( parentIdx, localAnd );
            }
        }
        innerCheck = check.toString() + " && ";

        atomicExpr.setRewrittenExpression(castedExpression);
        return new String[] { innerCheck, castedExpression };
    }
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    private String[] processNullSafeDereferencing( String expr, AtomicExprDescr atomicExpr, ConstraintConnectiveDescr ccd, int nullSafePos, int parentIdx, int childIdx ) {
        // convert "field1!.field2" in ["field1 != null && ", "field1.field2"]
        String field1 = expr.substring( 0, nullSafePos ).trim();
        expr = field1 + "." + expr.substring( nullSafePos + 2 ).trim();
        RelationalExprDescr check = new RelationalExprDescr( "!=",
                                                             false,
                                                             null,
                                                             new AtomicExprDescr( getPreconditionsToAppend( field1 ) ),
                                                             new AtomicExprDescr( "null" ) );
        String innerCheck = "";
        if ( ccd.getConnective() == ConnectiveType.AND || ccd.getConnective() == ConnectiveType.INC_AND ) {
            ccd.getDescrs().add( childIdx, check );
        } else {
            BaseDescr desc = ccd.getDescrs().get( parentIdx );
            if ( desc instanceof ConstraintConnectiveDescr ) {
                ((ConstraintConnectiveDescr) desc).getDescrs().add( childIdx, check );
            } else {
                ConstraintConnectiveDescr localAnd = new ConstraintConnectiveDescr( ConnectiveType.AND );
                BaseDescr original = ccd.getDescrs().remove( parentIdx );
                localAnd.getDescrs().add( check );
                localAnd.getDescrs().add( original );
                ccd.getDescrs().add( parentIdx, localAnd );
            }
        }
        innerCheck = check.toString() + " && ";

        String[] nullCheckAndExpr = new String[] { innerCheck, expr };
        atomicExpr.setRewrittenExpression( expr );
        return nullCheckAndExpr;
    }
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                                  final Pattern pattern,
                                  final BaseDescr d,
                                  final String expr,
                                  final Map<String, OperatorDescr> aliases ) {

        RelationalExprDescr relDescr = d instanceof RelationalExprDescr ? (RelationalExprDescr) d : null;
        boolean simple = isSimpleExpr( relDescr );

        if ( simple && // simple means also relDescr is != null
                !ClassObjectType.Map_ObjectType.isAssignableFrom( pattern.getObjectType() ) &&
                !ClassObjectType.Activation_ObjectType.isAssignableFrom( pattern.getObjectType() ) ) {
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                  state._fsp--;
                  if (state.failed) return result;
                  if ( state.backtracking==0 ) {
                     if( buildDescr  ) {
                                   result = new RelationalExprDescr( (op!=null?op.getText():null), false, null, left, right );
                               }
                            
                  }

                  }
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                    state._fsp--;
                    if (state.failed) return result;
                    if ( state.backtracking==0 ) {
                       if( buildDescr  ) {
                                     result = new RelationalExprDescr( (op!=null?input.toString(op.start,op.stop):null), false, null, left, new AtomicExprDescr((right!=null?input.toString(right.start,right.stop):null)) );
                                 }
                              
                    }

                    }
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Related Classes of org.drools.lang.descr.RelationalExprDescr

  • org.drools.lang.DRL5Expressions
  • org.drools.lang.DRL6Expressions
  • org.drools.lang.DRLExpressions
  • org.drools.lang.DRLExprParserTest
  • org.drools.lang.DRLExprTreeTest
  • org.drools.lang.MVELDumper
  • org.drools.rule.builder.PatternBuilder
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