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.connector.jdbc.table.JdbcRowDataLookupFunction

All Implemented Interfaces:

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

@Internal
public class JdbcRowDataLookupFunction
extends org.apache.flink.table.functions.TableFunction<org.apache.flink.table.data.RowData>

A lookup function for JdbcDynamicTableSource.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
JdbcRowDataLookupFunction(JdbcOptions options, JdbcLookupOptions lookupOptions, String[] fieldNames, org.apache.flink.table.types.DataType[] fieldTypes, String[] keyNames, org.apache.flink.table.types.logical.RowType rowType)

Method Summary

Modifier and Type	Method and Description
void	close()
void	eval(Object... keys) This is a lookup method which is called by Flink framework in runtime.
Connection	getDbConnection()
void	open(org.apache.flink.table.functions.FunctionContext context)

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

collect, 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(JdbcOptions options,
                                 JdbcLookupOptions lookupOptions,
                                 String[] fieldNames,
                                 org.apache.flink.table.types.DataType[] fieldTypes,
                                 String[] keyNames,
                                 org.apache.flink.table.types.logical.RowType rowType)

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

eval

public void eval(Object... keys)

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

Parameters:

keys - 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()