Package org.wikidata.wdtk.datamodel.helpers

Class AbstractDataObjectBuilder<T extends AbstractDataObjectBuilder<T,O>,O>

java.lang.Object

org.wikidata.wdtk.datamodel.helpers.AbstractDataObjectBuilder<T,O>

Type Parameters:

T - the type of the eventual concrete builder implementation

O - the type of the object that is being built

Direct Known Subclasses:

EntityDocumentBuilder, ReferenceBuilder, StatementBuilder

public abstract class AbstractDataObjectBuilder<T extends AbstractDataObjectBuilder<T,O>,O>
extends java.lang.Object

Abstract base class for all builder objects that create data model objects.

Author:

Markus Kroetzsch

Constructor Summary

Constructors

Constructor	Description
AbstractDataObjectBuilder()

Method Summary

Modifier and Type	Method	Description
abstract O	build()	Returns the object that has been built.
protected abstract T	getThis()	Returns the current object with the correct builder type.
protected void	prepareBuild()	Checks if the object has already been built, and throws an exception if yes.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractDataObjectBuilder

public AbstractDataObjectBuilder()

Method Detail

build

public abstract O build()

Returns the object that has been built.

Returns:

constructed object

Throws:

java.lang.IllegalStateException - if the object was built already

prepareBuild

protected void prepareBuild()

Checks if the object has already been built, and throws an exception if yes. If no, then the object is recorded as having been built.

Throws:

java.lang.IllegalStateException - if the object was built already

getThis

protected abstract T getThis()

Returns the current object with the correct builder type.

Returns:

this