Package io.debezium.connector.mysql

Class MySqlDefaultValueConverter

  • All Implemented Interfaces:
    DefaultValueConverter
    @Immutable
public class MySqlDefaultValueConverter
extends Object
implements DefaultValueConverter
    This class is used by a DDL parser to convert the string default value to a Java type recognized by value converters for a subset of types. The functionality is kept separate from the main converters to centralize the formatting logic if necessary.
    Author:
    Jiri Pechanec
    See Also:
    AbstractRowsEventDataDeserializer

    • Field Detail

      • LOGGER

        private static final org.slf4j.Logger LOGGER

      • EPOCH_EQUIVALENT_TIMESTAMP

        private static final Pattern EPOCH_EQUIVALENT_TIMESTAMP

      • EPOCH_EQUIVALENT_DATE

        private static final Pattern EPOCH_EQUIVALENT_DATE

      • TIMESTAMP_PATTERN

        private static final Pattern TIMESTAMP_PATTERN

      • ISO_LOCAL_DATE_WITH_OPTIONAL_TIME

        private static final DateTimeFormatter ISO_LOCAL_DATE_WITH_OPTIONAL_TIME

    • Constructor Detail

      • MySqlDefaultValueConverter

        public MySqlDefaultValueConverter​(MySqlValueConverters converters)

    • Method Detail

      • parseDefaultValue

        public Optional<Object> parseDefaultValue​(Column column,
                                          String defaultValueExpression)
        This interface is used by a DDL parser to convert the string default value to a Java type recognized by value converters for a subset of types.
        Specified by:
        parseDefaultValue in interface DefaultValueConverter
        Parameters:
        column - the column definition describing the data value; never null
        defaultValueExpression - the default value literal; may be null
        Returns:
        value converted to a Java type; optional

      • convert

        public Object convert​(Column column,
                      String value)
        Converts a default value from the expected format to a logical object acceptable by the main JDBC converter.
        Parameters:
        column - column definition
        value - string formatted default value
        Returns:
        value converted to a Java type

      • convertToLocalDate

        private Object convertToLocalDate​(Column column,
                                  String value)
        Converts a string object for an object type of LocalDate or LocalDateTime in case of MySql Date type. If the column definition allows null and default value is 0000-00-00, we need return null; else 0000-00-00 will be replaced with 1970-01-01;
        Parameters:
        column - the column definition describing the data value; never null
        value - the string object to be converted into a LocalDate type or LocalDateTime in case of MySql Date type;
        Returns:
        the converted value;

      • convertToLocalDateTime

        private Object convertToLocalDateTime​(Column column,
                                      String value)
        Converts a string object for an object type of LocalDateTime. If the column definition allows null and default value is 0000-00-00 00:00:00, we need return null, else 0000-00-00 00:00:00 will be replaced with 1970-01-01 00:00:00;
        Parameters:
        column - the column definition describing the data value; never null
        value - the string object to be converted into a LocalDateTime type;
        Returns:
        the converted value;

      • convertToTimestamp

        private Object convertToTimestamp​(Column column,
                                  String value)
        Converts a string object for an object type of Timestamp. If the column definition allows null and default value is 0000-00-00 00:00:00, we need return null, else 0000-00-00 00:00:00 will be replaced with 1970-01-01 00:00:00;
        Parameters:
        column - the column definition describing the data value; never null
        value - the string object to be converted into a Timestamp type;
        Returns:
        the converted value;

      • convertToDuration

        private Object convertToDuration​(Column column,
                                 String value)
        Converts a string object for an object type of Duration.
        Parameters:
        column - the column definition describing the data value; never null
        value - the string object to be converted into a Duration type;
        Returns:
        the converted value;

      • convertToDouble

        private Object convertToDouble​(String value)
        Converts a string object for an expected JDBC type of Types.DOUBLE.
        Parameters:
        value - the string object to be converted into a Types.DOUBLE type;
        Returns:
        the converted value;

      • convertToDecimal

        private Object convertToDecimal​(Column column,
                                String value)
        Converts a string object for an expected JDBC type of Types.DECIMAL.
        Parameters:
        column - the column definition describing the data value; never null
        value - the string object to be converted into a Types.DECIMAL type;
        Returns:
        the converted value;

      • convertToBits

        private Object convertToBits​(Column column,
                             String value)
        Converts a string object for an expected JDBC type of Types.BIT.
        Parameters:
        column - the column definition describing the data value; never null
        value - the string object to be converted into a Types.BIT type;
        Returns:
        the converted value;

      • convertToBit

        private Object convertToBit​(String value)

      • convertToBits

        private Object convertToBits​(String value)

      • convertToBoolean

        private Object convertToBoolean​(String value)
        Converts a string object for an expected JDBC type of Types.BOOLEAN.
        Parameters:
        value - the string object to be converted into a Types.BOOLEAN type;
        Returns:
        the converted value;

      • cleanTimestamp

        private String cleanTimestamp​(String s)
        Clean input timestamp to yyyy-mm-dd hh:mm:ss[.fffffffff] format
        Parameters:
        s - input timestamp
        Returns:
        cleaned timestamp

      • replaceFirstNonNumericSubstring

        private String replaceFirstNonNumericSubstring​(String s,
                                               int startIndex,
                                               char c)
        Replace the first non-numeric substring
        Parameters:
        s - the original string
        startIndex - the beginning index, inclusive
        c - the new character
        Returns: