org.apache.flink.connector.jdbc.table

Class JdbcRowDataLookupFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.TableFunction<org.apache.flink.table.data.RowData>

org.apache.flink.table.functions.LookupFunction

org.apache.flink.connector.jdbc.table.JdbcRowDataLookupFunction

All Implemented Interfaces:

Serializable, org.apache.flink.table.functions.FunctionDefinition

@Internal
public class JdbcRowDataLookupFunction
extends org.apache.flink.table.functions.LookupFunction

A lookup function for JdbcDynamicTableSource.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
JdbcRowDataLookupFunction(InternalJdbcConnectionOptions options, int maxRetryTimes, String[] fieldNames, org.apache.flink.table.types.DataType[] fieldTypes, String[] keyNames, org.apache.flink.table.types.logical.RowType rowType, List<String> resolvedPredicates, Serializable[] pushdownParams)

Method Summary

Modifier and Type	Method and Description
void	close()
Connection	getDbConnection()
Collection<org.apache.flink.table.data.RowData>	lookup(org.apache.flink.table.data.RowData keyRow) This is a lookup method which is called by Flink framework in runtime.
void	open(org.apache.flink.table.functions.FunctionContext context)

Methods inherited from class org.apache.flink.table.functions.LookupFunction

eval

Methods inherited from class org.apache.flink.table.functions.TableFunction

collect, finish, getKind, getParameterTypes, getResultType, getTypeInference, setCollector

Methods inherited from class org.apache.flink.table.functions.UserDefinedFunction

functionIdentifier, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.table.functions.FunctionDefinition

getRequirements, isDeterministic

Constructor Detail

JdbcRowDataLookupFunction

public JdbcRowDataLookupFunction(InternalJdbcConnectionOptions options,
                                 int maxRetryTimes,
                                 String[] fieldNames,
                                 org.apache.flink.table.types.DataType[] fieldTypes,
                                 String[] keyNames,
                                 org.apache.flink.table.types.logical.RowType rowType,
                                 List<String> resolvedPredicates,
                                 Serializable[] pushdownParams)

Method Detail

open

public void open(org.apache.flink.table.functions.FunctionContext context)
          throws Exception

Overrides:

open in class org.apache.flink.table.functions.UserDefinedFunction

Throws:

Exception

lookup

public Collection<org.apache.flink.table.data.RowData> lookup(org.apache.flink.table.data.RowData keyRow)

This is a lookup method which is called by Flink framework in runtime.

Specified by:

lookup in class org.apache.flink.table.functions.LookupFunction

Parameters:

keyRow - lookup keys

close

public void close()
           throws IOException

Overrides:

close in class org.apache.flink.table.functions.UserDefinedFunction

Throws:

IOException

getDbConnection

@VisibleForTesting
public Connection getDbConnection()