org.apache.flink.connector.jdbc.table

类 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

所有已实现的接口:

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

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

A lookup function for JdbcDynamicTableSource.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
JdbcRowDataLookupFunction(JdbcConnectorOptions options, int maxRetryTimes, String[] fieldNames, org.apache.flink.table.types.DataType[] fieldTypes, String[] keyNames, org.apache.flink.table.types.logical.RowType rowType)

方法概要

限定符和类型	方法和说明
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)

从类继承的方法 org.apache.flink.table.functions.LookupFunction

eval

从类继承的方法 org.apache.flink.table.functions.TableFunction

collect, getKind, getParameterTypes, getResultType, getTypeInference, setCollector

从类继承的方法 org.apache.flink.table.functions.UserDefinedFunction

functionIdentifier, toString

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.table.functions.FunctionDefinition

getRequirements, isDeterministic

构造器详细资料

JdbcRowDataLookupFunction

public JdbcRowDataLookupFunction(JdbcConnectorOptions options,
                                 int maxRetryTimes,
                                 String[] fieldNames,
                                 org.apache.flink.table.types.DataType[] fieldTypes,
                                 String[] keyNames,
                                 org.apache.flink.table.types.logical.RowType rowType)

方法详细资料

open

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

覆盖:

open 在类中 org.apache.flink.table.functions.UserDefinedFunction

抛出:

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.

指定者:

lookup 在类中 org.apache.flink.table.functions.LookupFunction

参数:

keyRow - lookup keys

close

public void close()
           throws IOException

覆盖:

close 在类中 org.apache.flink.table.functions.UserDefinedFunction

抛出:

IOException

getDbConnection

@VisibleForTesting
public Connection getDbConnection()