software.amazon.kinesis.connectors.flink.table

Class RowDataFieldsKinesisPartitioner

java.lang.Object

software.amazon.kinesis.connectors.flink.KinesisPartitioner<org.apache.flink.table.data.RowData>

software.amazon.kinesis.connectors.flink.table.RowDataFieldsKinesisPartitioner

All Implemented Interfaces:

Serializable

@Internal
public final class RowDataFieldsKinesisPartitioner
extends KinesisPartitioner<org.apache.flink.table.data.RowData>

A KinesisPartitioner of RowData elements that constructs the partition key from a list of field names.

The key is constructed by concatenating the string representations of a list of fields projected from an input element. A fixed prefix can be optionally configured in order to speed up the key construction process.

Resulting partition key values are trimmed to the maximum length allowed by Kinesis.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEFAULT_DELIMITER Default delimiter for delimiter.
static int	MAX_PARTITION_KEY_LENGTH Allowed maximum length limit of a partition key.

Constructor Summary

Constructors

Constructor and Description
RowDataFieldsKinesisPartitioner(org.apache.flink.table.catalog.CatalogTable table)
RowDataFieldsKinesisPartitioner(org.apache.flink.table.catalog.CatalogTable table, String delimiter)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
String	getPartitionId(org.apache.flink.table.data.RowData element) Return a partition id based on the input.
int	hashCode()
static boolean	hasWellDefinedString(org.apache.flink.table.types.logical.LogicalType logicalType) Checks whether the given LogicalType has a well-defined string representation when calling Object.toString() on the internal data structure.
void	setStaticFields(Map<String,String> staticFields) Update the fixed partition key prefix.

Methods inherited from class software.amazon.kinesis.connectors.flink.KinesisPartitioner

getExplicitHashKey, initialize

Methods inherited from class java.lang.Object

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

Field Detail

MAX_PARTITION_KEY_LENGTH

public static final int MAX_PARTITION_KEY_LENGTH

Allowed maximum length limit of a partition key.

See Also:

Constant Field Values

DEFAULT_DELIMITER

public static final String DEFAULT_DELIMITER

Default delimiter for delimiter.

Constructor Detail

RowDataFieldsKinesisPartitioner

public RowDataFieldsKinesisPartitioner(org.apache.flink.table.catalog.CatalogTable table)

RowDataFieldsKinesisPartitioner

public RowDataFieldsKinesisPartitioner(org.apache.flink.table.catalog.CatalogTable table,
                                       String delimiter)

Method Detail

getPartitionId

public String getPartitionId(org.apache.flink.table.data.RowData element)

Description copied from class: KinesisPartitioner

Return a partition id based on the input.

Specified by:

getPartitionId in class KinesisPartitioner<org.apache.flink.table.data.RowData>

Parameters:

element - Element to partition

Returns:

A string representing the partition id

setStaticFields

public void setStaticFields(Map<String,String> staticFields)

Update the fixed partition key prefix.

Parameters:

staticFields - An association of (field name, field value) pairs to be used as static partition key prefix.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

hasWellDefinedString

public static boolean hasWellDefinedString(org.apache.flink.table.types.logical.LogicalType logicalType)

Checks whether the given LogicalType has a well-defined string representation when calling Object.toString() on the internal data structure. The string representation would be similar in SQL or in a programming language.

Note: This method might not be necessary anymore, once we have implemented a utility that can convert any internal data structure to a well-defined string representation.