Package org.refcodes.tabular

Class ColumnImpl<T>

java.lang.Object

org.refcodes.tabular.AbstractColumn<T>

org.refcodes.tabular.ColumnImpl<T>

Type Parameters:

T - The type managed by the Column.

All Implemented Interfaces:

Cloneable, org.refcodes.mixin.KeyAccessor<T>, org.refcodes.mixin.TypeAccessor<T>, Column<T>

public class ColumnImpl<T>
extends AbstractColumn<T>
implements Cloneable

Implementation of a Column supporting Object instances, being Cloneable. The storage String instance is converted from and back using serialization; the serialized byte arrays are converted using base64 encoding to a String.

Nested Class Summary

Nested classes/interfaces inherited from interface org.refcodes.mixin.KeyAccessor

org.refcodes.mixin.KeyAccessor.KeyBuilder<K extends Object,B extends org.refcodes.mixin.KeyAccessor.KeyBuilder<K,B>>, org.refcodes.mixin.KeyAccessor.KeyMutator<K extends Object>, org.refcodes.mixin.KeyAccessor.KeyProperty<K extends Object>

Nested classes/interfaces inherited from interface org.refcodes.mixin.TypeAccessor

org.refcodes.mixin.TypeAccessor.TypeMutator<T extends Object>, org.refcodes.mixin.TypeAccessor.TypeProperty<T extends Object>

Constructor Summary

Constructors

Constructor	Description
ColumnImpl(String aKey, Class<T> aType)	Creates a ColumnImpl managing String instances.

Method Summary

Modifier and Type	Method	Description
Object	clone()
T	fromStorageStrings(String[] aStringValues)	From storage strings.
String[]	toStorageStrings(T aValue)	A Column implementation can provide its own text exchange format for the given objects.

Methods inherited from class org.refcodes.tabular.AbstractColumn

contains, fromStorageString, get, getKey, getType, remove, toPrintable, toStorageString

Methods inherited from class java.lang.Object

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

Constructor Detail

ColumnImpl

public ColumnImpl(String aKey,
                  Class<T> aType)

Creates a ColumnImpl managing String instances.

Parameters:

aKey - The key for the ColumnImpl.

aType - The type to be used.

Method Detail

toStorageStrings

public String[] toStorageStrings(T aValue)

A Column implementation can provide its own text exchange format for the given objects. This method enables the Column to convert a value of the given type to a String array and via Column.fromStorageStrings(String[]) back to the value (bijective). This method supports data sinks (such as Amazon's SimpleDb) which provide dedicated support for multiple values in a row's entry: In case T is an array type, then the storage String representations of the elements in that array may be placed in dedicated entries of the returned String array. In case T is not an array type then the returned String array may contain just one value. In case data sinks (such as relational databases) are to be addressed which allow only a single value in a row's entry, then the method Column.toStorageString(Object) may be used instead.

Specified by:

toStorageStrings in interface Column<T>

Parameters:

aValue - the element to be converted to a String array.

Returns:

The String array representation of the value.

fromStorageStrings

public T fromStorageStrings(String[] aStringValues)
                     throws ParseException

From storage strings.

Specified by:

fromStorageStrings in interface Column<T>

Parameters:

aStringValues - the string values

Returns:

the t

Throws:

ParseException - the parse exception

clone

public Object clone()
             throws CloneNotSupportedException

Overrides:

clone in class AbstractColumn<T>

Throws:

CloneNotSupportedException