uk.org.ury.backend.database
Class DatabaseItem<E,T>

java.lang.Object
  uk.org.ury.backend.database.DatabaseItem<E,T>

Direct Known Subclasses:

LibraryItem, ShowItem

public abstract class DatabaseItem<E,T>
extends java.lang.Object

An abstract class presenting a template for objects serving as a data structure for collections of properties retrieved from a SQL database.

Author:

Matt Windsor

Constructor Summary

DatabaseItem(java.util.Map<E,T> properties)
Construct a new item from an existing list of properties.

Method Summary

java.util.Map<java.lang.String,java.lang.String>	asResponse() Retrieve a map of string representations of the properties.
T	get(E property) Query this item for a property.
boolean	has(E property) Check whether a property has been set in the item.

Methods inherited from class java.lang.Object

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

Constructor Detail

DatabaseItem

public DatabaseItem(java.util.Map<E,T> properties)

Construct a new item from an existing list of properties.

Parameters:

properties - The map of properties that the new item will inherit.

Method Detail

has

public boolean has(E property)

Check whether a property has been set in the item.

Returns:

true if the property has been set; false otherwise.

get

public T get(E property)
      throws MissingPropertyException

Query this item for a property.

Parameters:

property - The property to query.

Returns:

The property, if it exists.

Throws:

MissingPropertyException - if the property does not exist.

asResponse

public java.util.Map<java.lang.String,java.lang.String> asResponse()

Retrieve a map of string representations of the properties. This relies on E and T having meaningful toString methods.

Returns:

a list of lines representing the response.