Package guru.mikelue.jdut.datagrain

Class DataField<T>

java.lang.Object

guru.mikelue.jdut.datagrain.DataField<T>

Type Parameters:

T - The type of data

public class DataField<T>
extends Object

Container with data of a field.
This class would call the supplier only once, and keep the value.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DataField.Factory	Utility factory to compose fields for a table.

Method Summary

Modifier and Type	Method	Description
Map.Entry<String,DataField<T>>	asMapEntry()	Turns this field to map entry.
protected DataField<T>	clone()
boolean	equals(Object obj)	Compares the column definition and data.
SchemaColumn	getColumn()	Gets definition of column.
String	getColumnName()	Gets name of column.
T	getData()	Gets data or gets by Supplier of data.
Optional<Supplier<? extends T>>	getDataSupplier()	Gets data supplier of this field.
SchemaTable	getTable()	Gets definition of table.
String	getTableName()	Gets name of table.
int	hashCode()	Hashes the column definition and data.

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Method Detail

getTable

public SchemaTable getTable()

Gets definition of table.

Returns:

The definition of table

See Also:

getTableName()

getTableName

public String getTableName()

Gets name of table.

Returns:

the name of table

See Also:

getTable()

getColumn

public SchemaColumn getColumn()

Gets definition of column.

Returns:

The definition of column

See Also:

getColumnName()

getColumnName

public String getColumnName()

Gets name of column.

Returns:

The name of column

See Also:

getColumn()

getData

public T getData()

Gets data or gets by Supplier of data. This method would call the supplier only once, and keep the value.

Returns:

The data this field is holding

getDataSupplier

public Optional<Supplier<? extends T>> getDataSupplier()

Gets data supplier of this field.

Returns:

The data supplier, may be empty

asMapEntry

public Map.Entry<String,DataField<T>> asMapEntry()

Turns this field to map entry.

Returns:

The entry for Map

clone

protected DataField<T> clone()

Overrides:

clone in class Object

equals

public boolean equals(Object obj)

Compares the column definition and data.

Overrides:

equals in class Object

hashCode

public int hashCode()

Hashes the column definition and data.

Overrides:

hashCode in class Object