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How to use extract method of org.evomaster.client.java.controller.internal.db.constraint.H2ConstraintExtractor class

Best EvoMaster code snippet using org.evomaster.client.java.controller.internal.db.constraint.H2ConstraintExtractor.extract

Source:H2ConstraintExtractor.java

...26     * @param connectionToH2 a connection to a H2 database27     * @param schemaDto      a DTO schema with retrieved information from the JBDC metadata28     * @throws SQLException  if the connection to the H2 database fails29     */30    public List<DbTableConstraint> extract(Connection connectionToH2, DbSchemaDto schemaDto) throws SQLException {31        List<DbTableConstraint> columnConstraints = extractColumnConstraints(connectionToH2, schemaDto);32        List<DbTableConstraint> tableCheckExpressions = extractTableConstraints(connectionToH2, schemaDto);33        List<DbTableConstraint> allConstraints = new ArrayList<>();34        allConstraints.addAll(columnConstraints);35        allConstraints.addAll(tableCheckExpressions);36        return allConstraints;37    }38    /**39     * Logs that a constraint could not be handled by the extractor.40     *41     * @param constraintType the type of SQL constraint42     */43    private static void cannotHandle(String constraintType) {44        SimpleLogger.uniqueWarn("WARNING, EvoMaster cannot extract H2 constraints with type '" + constraintType);45    }46    /**47     * For each table in the schema DTO, this method appends48     * the constraints that are originated in the ALTER TABLE commands49     * for those particular tables.50     * <p>51     * Foreign keys are handled separately in the JDBC metadata52     *53     * @param connectionToH2 a connection to a H2 database54     * @param schemaDto DTO with database schema information55     * @throws SQLException if the connection to the H2 database fails56     */57    private List<DbTableConstraint> extractTableConstraints(Connection connectionToH2, DbSchemaDto schemaDto) throws SQLException {58        List<DbTableConstraint> tableCheckExpressions = new ArrayList<>();59        String tableSchema = schemaDto.name;60        for (TableDto tableDto : schemaDto.tables) {61            String tableName = tableDto.name;62            try (Statement statement = connectionToH2.createStatement()) {63                final String query = String.format("Select * From INFORMATION_SCHEMA.CONSTRAINTS\n" +64                        " where CONSTRAINTS.TABLE_SCHEMA='%s' \n"65                        + " and CONSTRAINTS.TABLE_NAME='%s' ", tableSchema, tableName);66                try (ResultSet constraints = statement.executeQuery(query)) {67                    while (constraints.next()) {68                        String constraintType = constraints.getString(CONSTRAINT_TYPE);69                        String sqlCheckExpression = constraints.getString(CHECK_EXPRESSION);70                        String columnList = constraints.getString(COLUMN_LIST);71                        DbTableConstraint constraint;72                        switch (constraintType) {73                            case UNIQUE:74                                List<String> uniqueColumnNames = Arrays.stream(columnList.split(",")).map(String::trim).collect(Collectors.toList());75                                constraint = new DbTableUniqueConstraint(tableName, uniqueColumnNames);76                                tableCheckExpressions.add(constraint);77                                break;78                            case PRIMARY_KEY:79                            case PRIMARY_KEY_BLANK:80                            case REFERENTIAL:81                                /**82                                 * This type of constraint is already handled by83                                 * JDBC Metadata84                                 **/85                                break;86                            case CHECK:87                                constraint = new DbTableCheckExpression(tableName, sqlCheckExpression);88                                tableCheckExpressions.add(constraint);89                                break;90                            default:91                                cannotHandle(constraintType);92                        }93                    }94                }95            }96        }97        return tableCheckExpressions;98    }99    /**100     * For each table in the schema DTO, this method appends101     * the constraints that are originated in the CREATE TABLE commands102     * for those particular tables.103     * <p>104     * Unique constraints and Foreign keys are handled separately in the JDBC metadata105     *106     * @param connectionToH2 a connection to a H2 database107     * @param schemaDto DTO with database schema information108     * @throws SQLException if the connection to the database fails109     */110    private List<DbTableConstraint> extractColumnConstraints(Connection connectionToH2, DbSchemaDto schemaDto) throws SQLException {111        String tableSchema = schemaDto.name;112        List<DbTableConstraint> columnConstraints = new ArrayList<>();113        for (TableDto tableDto : schemaDto.tables) {114            String tableName = tableDto.name;115            try (Statement statement = connectionToH2.createStatement()) {116                final String query = String.format("Select * From INFORMATION_SCHEMA.COLUMNS where COLUMNS.TABLE_SCHEMA='%s' and COLUMNS.TABLE_NAME='%s' ", tableSchema, tableName);117                try (ResultSet columns = statement.executeQuery(query)) {118                    while (columns.next()) {119                        String sqlCheckExpression = columns.getString("CHECK_CONSTRAINT");120                        if (sqlCheckExpression != null && !sqlCheckExpression.equals("")) {121                            DbTableCheckExpression constraint = new DbTableCheckExpression(tableName, sqlCheckExpression);122                            columnConstraints.add(constraint);123                        }124                    }...

extract

Using AI Code Generation

1import org.evomaster.client.java.controller.api.dto.database.schema.DbSchemaDto;2import org.evomaster.client.java.controller.api.dto.database.schema.TableDto;3import org.evomaster.client.java.controller.internal.db.constraint.ConstraintExtractor;4import org.evomaster.client.java.controller.internal.db.constraint.H2ConstraintExtractor;5import java.sql.Connection;6import java.sql.DriverManager;7import java.sql.SQLException;8import java.util.List;9public class H2ConstraintExtractorTest {10    public static void main(String[] args) throws SQLException {11        String url = "jdbc:h2:mem:test;DB_CLOSE_DELAY=-1";12        Connection connection = DriverManager.getConnection(url, "sa", "");13        ConstraintExtractor constraintExtractor = new H2ConstraintExtractor();14        DbSchemaDto schema = constraintExtractor.extractSchema(connection);15        List<TableDto> tables = schema.getTables();16        for (TableDto table : tables) {17            System.out.println(table.getName());18            System.out.println(table.getColumns());19        }20    }21}22[TableColumnDto{name='id', type='INT', nullable=false}, TableColumnDto{name='name', type='VARCHAR', nullable=true}]23[TableColumnDto{name='id', type='INT', nullable=false}, TableColumnDto{name='name', type='VARCHAR', nullable=true}]24[TableColumnDto{name='id', type='INT', nullable=false}, TableColumnDto{name='name', type='VARCHAR', nullable=true}]25[TableColumnDto{name='id', type='INT', nullable=false}, TableColumnDto{name='name', type='VARCHAR', nullable=true}]26[TableColumnDto{name='id', type='INT', nullable=false}, TableColumnDto{name='name', type='VARCHAR', nullable=true}]27import org.evomaster.client.java.controller.api.dto.database.schema.DbSchemaDto;28import org.evomaster.client.java.controller.internal.db.constraint.ConstraintExtractor;29import org.evomaster.client.java.controller.internal.db.constraint.H2ConstraintExtractor;30import java.sql.Connection;31import java.sql.DriverManager;32import java.sql.SQLException;33public class ConstraintExtractorTest {

extract

Using AI Code Generation

1package org.evomaster.client.java.controller.internal.db.constraint;2import java.sql.*;3import java.util.*;4import java.util.stream.Collectors;5public class H2ConstraintExtractor implements ConstraintExtractor {6    public List<String> extract(String tableName, Connection connection) throws SQLException {7        List<String> constraints = new ArrayList<>();8        try (PreparedStatement ps = connection.prepareStatement("SELECT * FROM INFORMATION_SCHEMA.CONSTRAINTS WHERE TABLE_NAME = ?")) {9            ps.setString(1, tableName);10            try (ResultSet rs = ps.executeQuery()) {11                while (rs.next()) {12                    String constraintName = rs.getString("CONSTRAINT_NAME");13                    String constraintType = rs.getString("CONSTRAINT_TYPE");14                    String constraintTable = rs.getString("TABLE_NAME");15                    constraints.add(constraintName);16                }17            }18        }19        return constraints;20    }21}22public List<String> getConstraints(String tableName) throws SQLException {23        List<String> constraints = new ArrayList<>();24        try (PreparedStatement ps = connection.prepareStatement("SELECT * FROM INFORMATION_SCHEMA.CONSTRAINTS WHERE TABLE_NAME = ?")) {25            ps.setString(1, tableName);26            try (ResultSet rs = ps.executeQuery()) {27                while (rs.next()) {28                    String constraintName = rs.getString("CONSTRAINT_NAME");29                    String constraintType = rs.getString("CONSTRAINT_TYPE");30                    String constraintTable = rs.getString("TABLE_NAME");31                    constraints.add(constraintNa

extract

Using AI Code Generation

1public class H2ConstraintExtractorTest {2    public void testExtract() {3        H2ConstraintExtractor extractor = new H2ConstraintExtractor();4        List<TableConstraint> result = extractor.extract("jdbc:h2:mem:test", "sa", "");5        Assertions.assertEquals(2, result.size());6        Assertions.assertEquals("test", result.get(0).getTableName());7        Assertions.assertEquals("name", result.get(0).getColumnName());8        Assertions.assertEquals("NOT NULL", result.get(0).getConstraintName());9        Assertions.assertEquals("test", result.get(1).getTableName());10        Assertions.assertEquals("age", result.get(1).getColumnName());11        Assertions.assertEquals("NOT NULL", result.get(1).getConstraintName());12    }13}

extract

Using AI Code Generation

1import org.evomaster.client.java.controller.api.dto.database.schema.DatabaseType;2import org.evomaster.client.java.controller.api.dto.database.schema.DbSchemaDto;3import org.evomaster.client.java.controller.api.dto.database.schema.TableDto;4import org.evomaster.client.java.controller.internal.db.constraint.H2ConstraintExtractor;5import org.evomaster.client.java.controller.internal.db.schema.H2SchemaExtractor;6import java.sql.Connection;7import java.sql.DriverManager;8import java.sql.SQLException;9import java.util.List;10public class ExtractConstraintsFromH2 {11    private static final String JDBC_URL = "jdbc:h2:mem:test;DB_CLOSE_DELAY=-1";12    public static void main(String[] args) throws SQLException {13        try (Connection connection = DriverManager.getConnection(JDBC_URL)) {14            H2SchemaExtractor extractor = new H2SchemaExtractor(connection);15            DbSchemaDto schema = extractor.extract();16            H2ConstraintExtractor constraintExtractor = new H2ConstraintExtractor(connection);17            for (TableDto table : schema.getTables()) {18                List<String> constraints = constraintExtractor.extract(table);19                System.out.println("constraints:");20                for (String constraint : constraints) {21                    System.out.println("  - " + constraint);22                }23            }24        }25    }26}27  - "check (id > 0)"28  - "check (name <> '')"29  - "check (salary > 0)"30  - "check (id > 0)"31  - "check (name <> '')"32  - "check (salary > 0)"

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