Package com.d3x.morpheus.db

Class DbSinkOptions.ColumnMappings

java.lang.Object

com.d3x.morpheus.db.DbSinkOptions.ColumnMappings

Enclosing class:

DbSinkOptions<R,C>

public class DbSinkOptions.ColumnMappings
extends java.lang.Object

A class that maintains a mapping between a DataFrame column type and a JDBC column type

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.Map<java.lang.Class<?>,com.d3x.morpheus.util.functions.Function1<com.d3x.morpheus.frame.DataFrameValue<R,C>,?>>	mapperMap
private java.util.Map<java.lang.Class<?>,java.lang.Class<?>>	sqlTypeMap

Constructor Summary

Constructors

Constructor	Description
ColumnMappings()	Constructor

Method Summary

Modifier and Type	Method	Description
<A,B> void	add(java.lang.Class<A> dataClass, java.lang.Class<B> sqlClass, com.d3x.morpheus.util.functions.Function1<com.d3x.morpheus.frame.DataFrameValue<R,C>,B> mapper)	Adds a mapping between a DataFrame column type and the approprivate JDBC type
(package private) com.d3x.morpheus.util.functions.Function1<com.d3x.morpheus.frame.DataFrameValue<R,C>,?>	getMapper(java.lang.Class<?> dataType)	Returns the mapper function to transform DataFrame type into SQL type
(package private) java.lang.Class<?>	getSqlType(java.lang.Class<?> dataType)	Returns the SQL type for the DataFrame type

Methods inherited from class java.lang.Object

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

Field Detail

sqlTypeMap

private java.util.Map<java.lang.Class<?>,java.lang.Class<?>> sqlTypeMap

mapperMap

private java.util.Map<java.lang.Class<?>,com.d3x.morpheus.util.functions.Function1<com.d3x.morpheus.frame.DataFrameValue<R,C>,?>> mapperMap

Constructor Detail

ColumnMappings

ColumnMappings()

Constructor

Method Detail

getSqlType

java.lang.Class<?> getSqlType(java.lang.Class<?> dataType)
                       throws com.d3x.morpheus.frame.DataFrameException

Returns the SQL type for the DataFrame type

Parameters:

dataType - the DataFrame column type

Returns:

the SQL type

Throws:

com.d3x.morpheus.frame.DataFrameException - if no match for data type

getMapper

com.d3x.morpheus.util.functions.Function1<com.d3x.morpheus.frame.DataFrameValue<R,C>,?> getMapper(java.lang.Class<?> dataType)

Returns the mapper function to transform DataFrame type into SQL type

Parameters:

dataType - the DataFrame column type class

Returns:

the SQL column type class

add

public <A,B> void add(java.lang.Class<A> dataClass,
                      java.lang.Class<B> sqlClass,
                      com.d3x.morpheus.util.functions.Function1<com.d3x.morpheus.frame.DataFrameValue<R,C>,B> mapper)

Adds a mapping between a DataFrame column type and the approprivate JDBC type

Type Parameters:

A - the DataFrame column type

B - the JDBC type

Parameters:

dataClass - the DataFrame column data type

sqlClass - the SQL data type supported by JDBC

mapper - the mapper function to transform A into B