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How to use computeComparison method of org.evomaster.client.java.controller.internal.db.HeuristicsCalculator class

Best EvoMaster code snippet using org.evomaster.client.java.controller.internal.db.HeuristicsCalculator.computeComparison

Source:HeuristicsCalculator.java

...72            return computeBetween((Between)exp, data);73        }74        if (exp instanceof ComparisonOperator) {75             //   this deals with 6 subclasses:76            return computeComparisonOperator((ComparisonOperator) exp, data);77        }78        if(exp instanceof ExistsExpression){79            //TODO80        }81        if(exp instanceof ExpressionList){82            //TODO83        }84        if (exp instanceof InExpression) {85            return computeInExpression((InExpression) exp, data);86        }87        if (exp instanceof IsNullExpression) {88            return computeIsNull((IsNullExpression) exp, data);89        }90        if(exp instanceof JsonOperator){91            //TODO92        }93        if(exp instanceof LikeExpression){94            //TODO95        }96        if(exp instanceof Matches){97            //TODO98        }99        if(exp instanceof MultiExpressionList){100            //TODO101        }102        if(exp instanceof NamedExpressionList){103            //TODO104        }105        if(exp instanceof RegExpMatchOperator){106            //TODO107        }108        return cannotHandle(exp);109    }110    private double computeBetween(Between between, DataRow data) {111        Instant start = getAsInstant(getValue(between.getBetweenExpressionStart(), data));112        Instant end = getAsInstant(getValue(between.getBetweenExpressionEnd(), data));113        Instant x = getAsInstant(getValue(between.getLeftExpression(), data));114        double after = computeComparison(x, start, new GreaterThanEquals());115        double before = computeComparison(x, end, new MinorThanEquals());116        return addDistances(after, before);117    }118    private double computeInExpression(InExpression exp, DataRow data) {119        //TODO can left be a list???120        ItemsList itemsList = exp.getRightItemsList();121        if (itemsList instanceof ExpressionList) {122            ExpressionList list = (ExpressionList) itemsList;123            if (exp.isNot()) {124                double max = 0;125                for (Expression element : list.getExpressions()) {126                    ComparisonOperator op = new NotEqualsTo();127                    op.setLeftExpression(exp.getLeftExpression());128                    op.setRightExpression(element);129                    double dist = computeComparisonOperator(op, data);130                    if (dist > max) {131                        max = dist;132                        break; // no need to look at others, as no gradient133                    }134                }135                return max;136            } else {137                double min = Double.MAX_VALUE;138                for (Expression element : list.getExpressions()) {139                    ComparisonOperator op = new EqualsTo();140                    op.setLeftExpression(exp.getLeftExpression());141                    op.setRightExpression(element);142                    double dist = computeComparisonOperator(op, data);143                    if (dist < min) {144                        min = dist;145                    }146                }147                return min;148            }149        } else {150            return cannotHandle(exp);151        }152    }153    private double computeIsNull(IsNullExpression exp, DataRow data) {154        Object x = getValue(exp.getLeftExpression(), data);155        if (x == null && !exp.isNot()) {156            return 0d;157        }158        if (x != null && exp.isNot()) {159            return 0d;160        }161        return 1;162    }163    private double cannotHandle(Expression exp) {164        SimpleLogger.uniqueWarn("WARNING, cannot handle SQL expression type '" + exp.getClass().getSimpleName() +165                "' with value: " + exp.toString());166        return Double.MAX_VALUE;167    }168    private double computeAnd(AndExpression exp, DataRow data) {169        double a = computeExpression(exp.getLeftExpression(), data);170        double b = computeExpression(exp.getRightExpression(), data);171        return addDistances(a, b);172    }173    private double addDistances(double a, double b) {174        double sum = a + b;175        if (sum < Math.max(a, b)) {176            //overflow177            return Double.MAX_VALUE;178        } else {179            return sum;180        }181    }182    private double computeOr(OrExpression exp, DataRow data) {183        double a = computeExpression(exp.getLeftExpression(), data);184        double b = computeExpression(exp.getRightExpression(), data);185        return Math.min(a, b);186    }187    private Instant getAsInstant(Object obj){188        if(obj == null){189            /*190                TODO this shouldn't really happen if we have full SQL support, like sub-selects191             */192            return null;193        }194        if(obj instanceof Timestamp){195            Timestamp timestamp = (Timestamp) obj;196            return timestamp.toInstant();197        }198        if(obj instanceof String){199            try {200                return ZonedDateTime.parse(obj.toString()).toInstant();201            } catch (DateTimeParseException e){202                /*203                    maybe it is in some weird format like 28-Feb-17...204                    this shouldn't really happen, but looks like Hibernate generate SQL from205                    JPQL with Date handled like this :(206                 */207                DateTimeFormatter df = new DateTimeFormatterBuilder()208                        // case insensitive to parse JAN and FEB209                        .parseCaseInsensitive()210                        // add pattern211                        .appendPattern("dd-MMM-yy")212                        // create formatter (use English Locale to parse month names)213                        .toFormatter(Locale.ENGLISH);214                return LocalDate.parse(obj.toString(), df)215                        .atStartOfDay().toInstant(ZoneOffset.UTC);216            }217        }218        SimpleLogger.warn("Cannot handle time value for class: " + obj.getClass());219        return null;220    }221    private double computeComparisonOperator(ComparisonOperator exp, DataRow data) {222        Object left = getValue(exp.getLeftExpression(), data);223        Object right = getValue(exp.getRightExpression(), data);224        if(left instanceof Timestamp || right instanceof Timestamp){225            Instant a = getAsInstant(left);226            Instant b = getAsInstant(right);227            if(a==null || b==null){228                return cannotHandle(exp);229            }230            return computeComparison(a, b, exp);231        }232        if (left instanceof Number && right instanceof Number) {233            double x = ((Number) left).doubleValue();234            double y = ((Number) right).doubleValue();235            return computerComparison(x, y, exp);236        }237        if (left instanceof String && right instanceof String) {238            return computeComparison(left.toString(), right.toString(), exp);239        }240        if (left instanceof Boolean && right instanceof Boolean) {241            return computeBooleanComparison((Boolean) left, (Boolean) right, exp);242        }243        if (left == null || right == null) {244            return computeNullComparison(left, right, exp);245        }246        return cannotHandle(exp);247    }248    private double computeComparison(Instant a, Instant b, ComparisonOperator exp) {249        if(a==null || b==null){250            return Double.MAX_VALUE;251        }252        double dif = - Duration.between(a,b).toMillis();253        return computerComparison(dif, exp);254    }255    private double computeBooleanComparison(boolean x, boolean y, ComparisonOperator exp) {256        if (!checkEqualOrNotOperator(exp)) {257            return cannotHandle(exp);258        }259        if (exp instanceof EqualsTo && x == y) {260            return 0d;261        }262        if (exp instanceof NotEqualsTo && x != y) {263            return 0d;264        }265        return 1d;266    }267    private boolean checkEqualOrNotOperator(ComparisonOperator exp) {268        return (exp instanceof EqualsTo) || (exp instanceof NotEqualsTo);269    }270    private double computeNullComparison(Object x, Object y, ComparisonOperator exp) {271        assert x == null || y == null;272        if (!checkEqualOrNotOperator(exp)) {273            return cannotHandle(exp);274        }275        if (exp instanceof EqualsTo && x == y) {276            return 0d;277        }278        if (exp instanceof NotEqualsTo && x != y) {279            return 0d;280        }281        return Double.MAX_VALUE;282    }283    private double computerComparison(double dif, ComparisonOperator exp) {284        if (exp instanceof EqualsTo) {285            return Math.abs(dif);286        } else if (exp instanceof GreaterThanEquals) {287            return dif >= 0 ? 0d : -dif;288        } else if (exp instanceof GreaterThan) {289            return dif > 0 ? 0d : 1d - dif;290        } else if (exp instanceof MinorThanEquals) {291            return dif <=0  ? 0d : dif;292        } else if (exp instanceof MinorThan) {293            return dif < 0 ? 0d : 1d + dif;294        } else if (exp instanceof NotEqualsTo) {295            return dif != 0 ? 0d : 1d;296        } else {297            return cannotHandle(exp);298        }299    }300    private double computerComparison(double x, double y, ComparisonOperator exp) {301        double dif = x - y;302        return computerComparison(dif, exp);303    }304    private double computeComparison(String a, String b, ComparisonOperator exp) {305        if (exp instanceof EqualsTo) {306            return DistanceHelper.getLeftAlignmentDistance(a, b);307        } else if (exp instanceof NotEqualsTo) {308            if (a.equals(b)) {309                return Double.MAX_VALUE;310            } else {311                return 0d;312            }313        } else {314            return cannotHandle(exp);315        }316    }317    private Object getValue(Expression exp, DataRow data) {318        //TODO all cases...

computeComparison

Using AI Code Generation

1import org.evomaster.client.java.controller.internal.db.HeuristicsCalculator2import org.evomaster.client.java.controller.internal.db.HeuristicsCalculator3let similarity: double = HeuristicsCalculator.computeComparison(string1, string2)4if(result){5} else {6}7import the class that contains the method to use8import the class that contains the method to use

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