io.datafx.io

Class JdbcSource<T>

java.lang.Object

io.datafx.io.AbstractDataReader<T>

io.datafx.io.JdbcSource<T>

Type Parameters:

T - the type of the returned objects.

All Implemented Interfaces:

DataReader<T>, WritableDataReader<T>, java.lang.Iterable<T>

public class JdbcSource<T>
extends AbstractDataReader<T>
implements WritableDataReader<T>

Create a connection to a relational DB and returns objects

Constructor Summary

Constructors

Constructor and Description
JdbcSource(java.sql.Connection connection, JdbcConverter<T> converter, java.lang.String table, java.lang.String... cols)
JdbcSource(java.sql.Connection connection, java.lang.String selectStatement, JdbcConverter<T> converter)
JdbcSource(java.lang.String jdbcUrl, JdbcConverter<T> converter, java.lang.String table, java.lang.String... cols)
JdbcSource(java.lang.String jdbcUrl, java.lang.String selectStatement, JdbcConverter<T> converter)

Method Summary

Modifier and Type	Method and Description
T	get() Obtain the next entity of data.
boolean	next() Check if more data is available on this DataReader.
void	setUpdateQuery(boolean b)
void	writeBack() Initiates the writeback call.

Methods inherited from class io.datafx.io.AbstractDataReader

iterator

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Constructor Detail

JdbcSource

public JdbcSource(java.lang.String jdbcUrl,
                  JdbcConverter<T> converter,
                  java.lang.String table,
                  java.lang.String... cols)

JdbcSource

public JdbcSource(java.lang.String jdbcUrl,
                  java.lang.String selectStatement,
                  JdbcConverter<T> converter)

JdbcSource

public JdbcSource(java.sql.Connection connection,
                  JdbcConverter<T> converter,
                  java.lang.String table,
                  java.lang.String... cols)

JdbcSource

public JdbcSource(java.sql.Connection connection,
                  java.lang.String selectStatement,
                  JdbcConverter<T> converter)

Method Detail

setUpdateQuery

public void setUpdateQuery(boolean b)

writeBack

public void writeBack()

Description copied from interface: WritableDataReader

Initiates the writeback call. It is up to the implementation class to do what is required for writing the data back to the original data source

Specified by:

writeBack in interface WritableDataReader<T>

get

public T get()

Description copied from interface: DataReader

Obtain the next entity of data. In case the data is a single entity, this method returns all data. In case the data is a list, this method returns the next entity and moves a pointer to the subsequent entity, if any

Specified by:

get in interface DataReader<T>

Returns:

the next available data entity or null if no new data can be retrieved

next

public boolean next()

Description copied from interface: DataReader

Check if more data is available on this DataReader. This method will only return false if no data is available. It should not return false in case data will be available at a later time. Calling this method on a DataReader that does not support lists always returns false

Specified by:

next in interface DataReader<T>

Returns:

true in case more data is available and obtainable via a get() call, false otherwise.