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

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

Source:HeuristicsCalculator.java

...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    }...

computeIsNull

Using AI Code Generation

1public class HeuristicsCalculatorTest {2    public void testComputeIsNull() {3        HeuristicsCalculator heuristicsCalculator = new HeuristicsCalculator();4        boolean isNull = heuristicsCalculator.computeIsNull(100, 100, 0);5        assertEquals(false, isNull);6        isNull = heuristicsCalculator.computeIsNull(100, 100, 50);7        assertEquals(true, isNull);8    }9}10import org.evomaster.client.java.controller.internal.db.HeuristicsCalculator;11import org.junit.jupiter.api.Test;12import static org.junit.jupiter.api.Assertions.assertEquals;13public class HeuristicsCalculatorTest {14    public void testComputeIsNotNull() {15        HeuristicsCalculator heuristicsCalculator = new HeuristicsCalculator();16        boolean isNotNull = heuristicsCalculator.computeIsNotNull(100, 100, 0);17        assertEquals(true, isNotNull);18        isNotNull = heuristicsCalculator.computeIsNotNull(100, 100, 50);19        assertEquals(false, isNotNull);20    }21}22import org.evomaster.client.java.controller.internal.db.HeuristicsCalculator;23import org.junit.jupiter.api.Test;24import static org.junit.jupiter.api.Assertions.assertEquals;25public class HeuristicsCalculatorTest {26    public void testComputeIsIn() {27        HeuristicsCalculator heuristicsCalculator = new HeuristicsCalculator();

computeIsNull

Using AI Code Generation

1String tableName = rs.getMetaData().getTableName(1);2String columnName = rs.getMetaData().getColumnName(1);3if(HeuristicsCalculator.computeIsNull(rs, 1)){4    table.addRow(tableName, columnName, null);5}else{6    table.addRow(tableName, columnName, rs.getObject(1));7}8database.addTable(table);9return database;10In the method org.evomaster.client.java.controller.internal.db.SqlScriptRunner#execute(java.sql.Connection, java.lang.String, java.lang.String), the method

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