Examples with ValueConverter io.debezium.relational.ValueConverter used on opensource projects

Example 1 with ValueConverter

use of io.debezium.relational.ValueConverter in project debezium by debezium.

the class MySqlValueConverters method converter.

@Override
public ValueConverter converter(Column column, Field fieldDefn) {
    // Handle a few MySQL-specific types based upon how they are handled by the MySQL binlog client ...
    String typeName = column.typeName().toUpperCase();
    if (matches(typeName, "JSON")) {
        return (data) -> convertJson(column, fieldDefn, data);
    }
    if (matches(typeName, "GEOMETRY") || matches(typeName, "LINESTRING") || matches(typeName, "POLYGON") || matches(typeName, "MULTIPOINT") || matches(typeName, "MULTILINESTRING") || matches(typeName, "MULTIPOLYGON") || matches(typeName, "GEOMETRYCOLLECTION")) {
        return (data -> convertGeometry(column, fieldDefn, data));
    }
    if (matches(typeName, "POINT")) {
        // backwards compatibility
        return (data -> convertPoint(column, fieldDefn, data));
    }
    if (matches(typeName, "YEAR")) {
        return (data) -> convertYearToInt(column, fieldDefn, data);
    }
    if (matches(typeName, "ENUM")) {
        // Build up the character array based upon the column's type ...
        List<String> options = extractEnumAndSetOptions(column);
        return (data) -> convertEnumToString(options, column, fieldDefn, data);
    }
    if (matches(typeName, "SET")) {
        // Build up the character array based upon the column's type ...
        List<String> options = extractEnumAndSetOptions(column);
        return (data) -> convertSetToString(options, column, fieldDefn, data);
    }
    if (matches(typeName, "TINYINT UNSIGNED") || matches(typeName, "TINYINT UNSIGNED ZEROFILL")) {
        // Convert TINYINT UNSIGNED internally from SIGNED to UNSIGNED based on the boundary settings
        return (data) -> convertUnsignedTinyint(column, fieldDefn, data);
    }
    if (matches(typeName, "SMALLINT UNSIGNED") || matches(typeName, "SMALLINT UNSIGNED ZEROFILL")) {
        // Convert SMALLINT UNSIGNED internally from SIGNED to UNSIGNED based on the boundary settings
        return (data) -> convertUnsignedSmallint(column, fieldDefn, data);
    }
    if (matches(typeName, "MEDIUMINT UNSIGNED") || matches(typeName, "MEDIUMINT UNSIGNED ZEROFILL")) {
        // Convert SMALLINT UNSIGNED internally from SIGNED to UNSIGNED based on the boundary settings
        return (data) -> convertUnsignedMediumint(column, fieldDefn, data);
    }
    if (matches(typeName, "INT UNSIGNED") || matches(typeName, "INT UNSIGNED ZEROFILL")) {
        // Convert INT UNSIGNED internally from SIGNED to UNSIGNED based on the boundary settings
        return (data) -> convertUnsignedInt(column, fieldDefn, data);
    }
    if (matches(typeName, "BIGINT UNSIGNED") || matches(typeName, "BIGINT UNSIGNED ZEROFILL")) {
        switch(super.bigIntUnsignedMode) {
            case LONG:
                return (data) -> convertBigInt(column, fieldDefn, data);
            case PRECISE:
                // Convert BIGINT UNSIGNED internally from SIGNED to UNSIGNED based on the boundary settings
                return (data) -> convertUnsignedBigint(column, fieldDefn, data);
        }
    }
    // We have to convert bytes encoded in the column's character set ...
    switch(column.jdbcType()) {
        // variable-length
        case Types.CHAR:
        // variable-length
        case Types.VARCHAR:
        // variable-length
        case Types.LONGVARCHAR:
        // variable-length
        case Types.CLOB:
        // fixed-length
        case Types.NCHAR:
        // fixed-length
        case Types.NVARCHAR:
        // fixed-length
        case Types.LONGNVARCHAR:
        // fixed-length
        case Types.NCLOB:
        case Types.DATALINK:
        case Types.SQLXML:
            Charset charset = charsetFor(column);
            if (charset != null) {
                logger.debug("Using {} charset by default for column: {}", charset, column);
                return (data) -> convertString(column, fieldDefn, charset, data);
            }
            logger.warn("Using UTF-8 charset by default for column without charset: {}", column);
            return (data) -> convertString(column, fieldDefn, StandardCharsets.UTF_8, data);
        case Types.TIME:
            if (adaptiveTimeMicrosecondsPrecisionMode)
                return data -> convertDurationToMicroseconds(column, fieldDefn, data);
        default:
            break;
    }
    // Otherwise, let the base class handle it ...
    return super.converter(column, fieldDefn);
}

Example 2 with ValueConverter

use of io.debezium.relational.ValueConverter in project debezium by debezium.

the class PostgresValueConverter method createArrayConverter.

private ValueConverter createArrayConverter(Column column, Field fieldDefn) {
    PostgresType arrayType = typeRegistry.get(column.nativeType());
    PostgresType elementType = arrayType.getElementType();
    final String elementTypeName = elementType.getName();
    final String elementColumnName = column.name() + "-element";
    final Column elementColumn = Column.editor().name(elementColumnName).jdbcType(elementType.getJdbcId()).nativeType(elementType.getOid()).type(elementTypeName).optional(true).scale(column.scale()).length(column.length()).create();
    Schema elementSchema = schemaBuilder(elementColumn).optional().build();
    final Field elementField = new Field(elementColumnName, 0, elementSchema);
    final ValueConverter elementConverter = converter(elementColumn, elementField);
    return data -> convertArray(column, fieldDefn, elementConverter, data);
}