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How to use getPostgresEnumTypes method of org.evomaster.client.java.controller.internal.db.SchemaExtractor class

Best EvoMaster code snippet using org.evomaster.client.java.controller.internal.db.SchemaExtractor.getPostgresEnumTypes

Source:SchemaExtractor.java

...121            schema name122         */123        schemaDto.name = getSchemaName(connection, dt);124        if (dt.equals(DatabaseType.POSTGRES)) {125            Map<String, Set<String>> enumLabels = getPostgresEnumTypes(connection);126            addPostgresEnumTypesToSchema(schemaDto, enumLabels);127            schemaDto.compositeTypes = getPostgresCompositeTypes(connection);128        }129        ResultSet tables = md.getTables(null, schemaDto.name, null, new String[]{"TABLE"});130        Set<String> tableNames = new HashSet<>();131        /*132            Interfaces to deal with DBs are simply awful...133            Here, we first check with schema name in upper case, and, if that gives no results,134            we try with lower case... this is because different databases deal with upper/lower135            cases differently.136            But API does not give you any info on whether result set137            is empty or not, and only way is to call next()138         */139        if (!tables.next()) {140            tables.close();141            schemaDto.name = schemaDto.name.toLowerCase();142            tables = md.getTables(null, schemaDto.name, null, new String[]{"TABLE"});143            if (tables.next()) {144                do {145                    handleTableEntry(schemaDto, md, tables, tableNames);146                } while (tables.next());147            }148        } else {149            do {150                handleTableEntry(schemaDto, md, tables, tableNames);151            } while (tables.next());152        }153        tables.close();154        /*155            Mark those columns that are using auto generated values156         */157        addForeignKeyToAutoIncrement(schemaDto);158        /*159            JDBC MetaData is quite limited.160            To check constraints, we need to do SQL queries on the system tables.161            Unfortunately, this is database-dependent162         */163        addConstraints(connection, dt, schemaDto);164        if (dt.equals(DatabaseType.POSTGRES)) {165            List<ColumnAttributes> columnAttributes = getPostgresColumnAttributes(connection);166            addColumnAttributes(schemaDto, columnAttributes);167        }168        assert validate(schemaDto);169        return schemaDto;170    }171    private static void addColumnAttributes(DbSchemaDto schemaDto, List<ColumnAttributes> listOfColumnAttributes) {172        for (ColumnAttributes columnAttributes : listOfColumnAttributes) {173            String tableName = columnAttributes.tableName;174            String columnName = columnAttributes.columnName;175            ColumnDto columnDto = getColumnDto(schemaDto, tableName, columnName);176            columnDto.numberOfDimensions = columnAttributes.numberOfDimensions;177        }178    }179    private static ColumnDto getColumnDto(DbSchemaDto schemaDto, String tableName, String columnName) {180        TableDto tableDto = schemaDto.tables.stream()181                .filter(t -> t.name.equals(tableName.toLowerCase()))182                .findFirst()183                .orElse(null);184        return tableDto.columns.stream()185                .filter(c -> c.name.equals(columnName.toLowerCase()))186                .findFirst()187                .orElse(null);188    }189    private static String getSchemaName(Connection connection, DatabaseType dt) throws SQLException {190        String schemaName;191        if (dt.equals(DatabaseType.MYSQL)) {192            // schema is database name in mysql193            schemaName = connection.getCatalog();194        } else {195            try {196                schemaName = connection.getSchema();197            } catch (Exception | AbstractMethodError e) {198                /*199                    In remote sessions, getSchema might fail.200                    We do not do much with it anyway (at least for201                    now), so not a big deal...202                    Furthermore, some drivers might be compiled to Java 6,203                    whereas getSchema was introduced in Java 7204                 */205                schemaName = "public";206            }207            //see https://www.progress.com/blogs/jdbc-tutorial-extracting-database-metadata-via-jdbc-driver208            schemaName = schemaName.toUpperCase();209        }210        return schemaName;211    }212    private static class ColumnAttributes {213        public String tableName;214        public String columnName;215        public int numberOfDimensions;216    }217    private static List<ColumnAttributes> getPostgresColumnAttributes(Connection connection) throws SQLException {218        String query = "SELECT pg_namespace.nspname as TABLE_NAMESPACE, pg_class.relname as TABLE_NAME, pg_attribute.attname as COLUMN_NAME, pg_attribute.attndims as NUMBER_OF_DIMENSIONS \n" +219                "FROM pg_attribute \n" +220                "INNER JOIN pg_class ON pg_class.oid = pg_attribute.attrelid " +221                "INNER JOIN pg_namespace ON pg_namespace.oid = pg_class.relnamespace " +222                "WHERE pg_namespace.nspname != 'pg_catalog' ";223        List<ColumnAttributes> listOfColumnAttributes = new LinkedList<>();224        try (Statement stmt = connection.createStatement()) {225            ResultSet columnAttributesResultSet = stmt.executeQuery(query);226            while (columnAttributesResultSet.next()) {227                String tableNamesapce = columnAttributesResultSet.getString("TABLE_NAMESPACE");228                String tableName = columnAttributesResultSet.getString("TABLE_NAME");229                String columnName = columnAttributesResultSet.getString("COLUMN_NAME");230                int numberOfDimensions = columnAttributesResultSet.getInt("NUMBER_OF_DIMENSIONS");231                if (numberOfDimensions == 0) {232                    // skip attribute rows when data types are not arrays, matrixes, etc.233                    continue;234                }235                ColumnAttributes columnAttributes = new ColumnAttributes();236                columnAttributes.tableName = tableName;237                columnAttributes.columnName = columnName;238                columnAttributes.numberOfDimensions = numberOfDimensions;239                listOfColumnAttributes.add(columnAttributes);240            }241        }242        return listOfColumnAttributes;243    }244    private static List<String> getAllCompositeTypeNames(Connection connection) throws SQLException {245        // Source: https://stackoverflow.com/questions/3660787/how-to-list-custom-types-using-postgres-information-schema246        String listAllCompositeTypesQuery = "SELECT      n.nspname as schema, t.typname as typename \n" +247                "FROM        pg_type t \n" +248                "LEFT JOIN   pg_catalog.pg_namespace n ON n.oid = t.typnamespace \n" +249                "WHERE       (t.typrelid = 0 OR (SELECT c.relkind = 'c' FROM pg_catalog.pg_class c WHERE c.oid = t.typrelid)) \n" +250                "AND     NOT EXISTS(SELECT 1 FROM pg_catalog.pg_type el WHERE el.oid = t.typelem AND el.typarray = t.oid)\n" +251                "AND     n.nspname NOT IN ('pg_catalog', 'information_schema')" +252                "AND     t.typtype ='c';";253        List<String> compositeTypeNames = new ArrayList<>();254        try (Statement listAllCompositeTypesStmt = connection.createStatement()) {255            ResultSet listAllCompositeTypesResultSet = listAllCompositeTypesStmt.executeQuery(listAllCompositeTypesQuery);256            while (listAllCompositeTypesResultSet.next()) {257                compositeTypeNames.add(listAllCompositeTypesResultSet.getString("typename"));258            }259        }260        return compositeTypeNames;261    }262    private static List<CompositeTypeDto> getPostgresCompositeTypes(Connection connection) throws SQLException {263        List<CompositeTypeDto> compositeTypeDtos = new ArrayList<>();264        List<String> compositeTypeNames = getAllCompositeTypeNames(connection);265        for (String compositeTypeName : compositeTypeNames) {266            List<CompositeTypeColumnDto> columnDtos = getAllCompositeTypeColumns(connection, compositeTypeName, compositeTypeNames);267            CompositeTypeDto compositeTypeDto = new CompositeTypeDto();268            compositeTypeDto.name = compositeTypeName;269            compositeTypeDto.columns = columnDtos;270            compositeTypeDtos.add(compositeTypeDto);271        }272        return compositeTypeDtos;273    }274    private static final String TEXT_DATA_TYPE = "text";275    private static final String BIT_DATA_TYPE = "bit";276    private static final String VAR_BIT_DATA_TYPE = "varbit";277    private static final String CHAR_DATA_TYPE = "char";278    private static final String VAR_CHAR_DATA_TYPE = "varchar";279    private static final String BLANK_PADDED_CHAR_DATA_TYPE = "bpchar";280    private static final String NUMERIC_DATA_TYPE = "numeric";281    private static List<CompositeTypeColumnDto> getAllCompositeTypeColumns(Connection connection, String compositeTypeName, List<String> allCompositeTypeNames) throws SQLException {282        // Source: https://stackoverflow.com/questions/6979282/postgresql-find-information-about-user-defined-types283        String listAttributesQuery = String.format(284                "SELECT pg_attribute.attname AS attname, pg_attribute.attlen  as attlen, pg_type.typname AS typename " +285                        " FROM pg_attribute " +286                        " JOIN pg_type ON pg_attribute.atttypid=pg_type.oid " +287                        " WHERE pg_attribute.attrelid =\n" +288                        "  (SELECT typrelid FROM pg_type WHERE typname = '%s') " +289                        " ORDER BY pg_attribute.attnum ", compositeTypeName);290        List<CompositeTypeColumnDto> columnDtos = new ArrayList<>();291        try (Statement listAttributesStmt = connection.createStatement()) {292            ResultSet listAttributesResultSet = listAttributesStmt.executeQuery(listAttributesQuery);293            while (listAttributesResultSet.next()) {294                CompositeTypeColumnDto columnDto = new CompositeTypeColumnDto();295                columnDto.name = listAttributesResultSet.getString("attname");296                columnDto.type = listAttributesResultSet.getString("typename");297                int attlen = listAttributesResultSet.getInt("attlen");298                /*299                 *  Composite type columns can not include constraints (such as NOT NULL).300                 *  Therefore, all columns in composite types are nullable.301                 */302                columnDto.nullable = true;303                columnDto.columnTypeIsComposite = allCompositeTypeNames.stream().anyMatch(t -> t.equalsIgnoreCase(columnDto.type));304                if (columnDto.columnTypeIsComposite) {305                    columnDto.size = 0;306                } else {307                    switch (columnDto.type) {308                        case TEXT_DATA_TYPE: {309                            columnDto.size = Integer.MAX_VALUE;310                        }311                        break;312                        case NUMERIC_DATA_TYPE:313                        case CHAR_DATA_TYPE:314                        case VAR_CHAR_DATA_TYPE:315                        case BIT_DATA_TYPE:316                        case VAR_BIT_DATA_TYPE:317                        case BLANK_PADDED_CHAR_DATA_TYPE: {318                            throw new UnsupportedOperationException("cannot get variable length size of type (varchar, char, varbit, bit, numeric) currently not supported for postgres composite types: " + columnDto.name + " with type " + columnDto.type);319                        }320                        default: {321                            columnDto.size = attlen;322                        }323                    }324                }325                columnDtos.add(columnDto);326            }327        }328        return columnDtos;329    }330    private static Map<String, Set<String>> getPostgresEnumTypes(Connection connection) throws SQLException {331        String query = "SELECT t.typname, e.enumlabel\n" +332                "FROM pg_type AS t\n" +333                "   JOIN pg_enum AS e ON t.oid = e.enumtypid\n" +334                "ORDER BY e.enumsortorder;";335        Map<String, Set<String>> enumLabels = new HashMap<>();336        try (Statement stmt = connection.createStatement()) {337            ResultSet enumTypeValues = stmt.executeQuery(query);338            while (enumTypeValues.next()) {339                String typeName = enumTypeValues.getString("typname");340                String enumLabel = enumTypeValues.getString("enumlabel");341                if (!enumLabels.containsKey(typeName)) {342                    enumLabels.put(typeName, new HashSet<>());343                }344                enumLabels.get(typeName).add(enumLabel);...

getPostgresEnumTypes

Using AI Code Generation

1        List<PostgresEnumType> enumTypes = schemaExtractor.getPostgresEnumTypes();2        for(PostgresEnumType enumType : enumTypes){3            PostgresEnumType.registerPostgresEnumType(enumType);4        }5        PostgresEnumType postgresEnumType = PostgresEnumType.getPostgresEnumType("public", "enum_type");6        boolean isPostgresEnumType = PostgresEnumType.isPostgresEnumType("public", "enum_type");7    public void testGetPostgresEnumTypes() throws SQLException {8        List<PostgresEnumType> enumTypes = schemaExtractor.getPostgresEnumTypes();9        assertTrue(enumTypes.size() == 1);10        PostgresEnumType enumType = enumTypes.get(0);11        assertEquals("public", enumType.getSchemaName());12        assertEquals("enum_type", enumType.getTypeName());13        assertEquals(3, enumType.getEnumValues().size());

getPostgresEnumTypes

Using AI Code Generation

1import org.evomaster.client.java.controller.internal.db.SchemaExtractor2import org.evomaster.client.java.controller.internal.db.schema.DatabaseType3import org.evomaster.client.java.controller.internal.db.schema.Table4import org.evomaster.client.java.controller.internal.db.schema.TableColumn5import java.util.*6import kotlin.collections.ArrayList7fun main(args: Array<String>) {8    val schemaExtractor = SchemaExtractor(DatabaseType.POSTGRES)9    val enums = getPostgresEnumTypes(tables)10    val enumValues = ArrayList<String>()11    enums.forEach { enum ->12        enumValues.add(enum.name)13        enum.values.forEach { enumValue ->14            enumValues.add(enumValue)15        }16    }17    val file = File("enums.txt")18    file.writeText(enumValues.joinToString("19}20fun getPostgresEnumTypes(tables: List<Table>): List<TableColumn> {21    val enums = ArrayList<TableColumn>()22    tables.forEach { table ->23        table.columns.forEach { column ->24            if (column.isEnum) {25                enums.add(column)26            }27        }28    }29}30import org.evomaster.client.java.controller.internal.db.SchemaExtractor31import org.evomaster.client.java.controller.internal.db.schema.DatabaseType32import org

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