io.debezium.relational.mapping

Class TruncateStrings

java.lang.Object

io.debezium.relational.mapping.TruncateStrings

All Implemented Interfaces:

ColumnMapper

public class TruncateStrings
extends Object
implements ColumnMapper

A ColumnMapper implementation that ensures that string values longer than a specified length will be truncated.

Author:

Randall Hauch

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	TruncateStrings.TruncatingValueConverter

Field Summary

Fields

Modifier and Type	Field and Description
private TruncateStrings.TruncatingValueConverter	converter

Constructor Summary

Constructors

Constructor and Description
TruncateStrings(int maxLength) Create a ColumnMapper that truncates string values to a maximum length.

Method Summary

Modifier and Type	Method and Description
void	alterFieldSchema(Column column, org.apache.kafka.connect.data.SchemaBuilder schemaBuilder) Optionally annotate the schema with properties to better capture the mapping behavior.
ValueConverter	create(Column column) Create for the given column a function that maps values.
protected boolean	isTruncationPossible(Column column)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface io.debezium.relational.mapping.ColumnMapper

initialize

Field Detail

converter

private final TruncateStrings.TruncatingValueConverter converter

Constructor Detail

TruncateStrings

public TruncateStrings(int maxLength)

Create a ColumnMapper that truncates string values to a maximum length.

Parameters:

maxLength - the maximum number of characters allowed in values

Throws:

IllegalArgumentException - if the maxLength is not positive

Method Detail

create

public ValueConverter create(Column column)

Description copied from interface: ColumnMapper

Create for the given column a function that maps values.

Specified by:

create in interface ColumnMapper

Parameters:

column - the column description; never null

Returns:

the function that converts the value; may be null

alterFieldSchema

public void alterFieldSchema(Column column,
                             org.apache.kafka.connect.data.SchemaBuilder schemaBuilder)

Description copied from interface: ColumnMapper

Optionally annotate the schema with properties to better capture the mapping behavior.

Specified by:

alterFieldSchema in interface ColumnMapper

Parameters:

column - the column definition; never null

schemaBuilder - the builder for the Field's schema; never null

isTruncationPossible

protected boolean isTruncationPossible(Column column)