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

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...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 }...

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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 {

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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

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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}

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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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