Package org.apache.commons.configuration2.builder.combined

Class CombinedConfigurationBuilderProvider

java.lang.Object

org.apache.commons.configuration2.builder.combined.BaseConfigurationBuilderProvider

org.apache.commons.configuration2.builder.combined.CombinedConfigurationBuilderProvider

All Implemented Interfaces:

ConfigurationBuilderProvider

public class CombinedConfigurationBuilderProvider
extends BaseConfigurationBuilderProvider

A specialized ConfigurationBuilderProvider implementation which deals with combined configuration builders.

This class is used to support <configuration> elements in configuration definition files. The provider creates another CombinedConfigurationBuilder which inherits some of the properties from its parent builder.

Since:

2.0

Constructor Summary

Constructors

Constructor	Description
CombinedConfigurationBuilderProvider()	Creates a new instance of CombinedConfigurationBuilderProvider.

Method Summary

Modifier and Type	Method	Description
protected BasicConfigurationBuilder<? extends Configuration>	createBuilder(ConfigurationDeclaration decl, Collection<BuilderParameters> params)	Creates a new, uninitialized instance of the builder class managed by this provider.
protected void	initializeParameterObjects(ConfigurationDeclaration decl, Collection<BuilderParameters> params)	Initializes the parameter objects with data stored in the current bean declaration.

Methods inherited from class org.apache.commons.configuration2.builder.combined.BaseConfigurationBuilderProvider

configureBuilder, createParameterObjects, determineBuilderClass, determineConfigurationClass, getBuilderClass, getConfigurationBuilder, getConfigurationClass, getParameterClasses, getReloadingBuilderClass, inheritParentBuilderProperties, isAllowFailOnInit

Methods inherited from class java.lang.Object

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

Constructor Details

CombinedConfigurationBuilderProvider

public CombinedConfigurationBuilderProvider()

Creates a new instance of CombinedConfigurationBuilderProvider.

Method Details

createBuilder

protected BasicConfigurationBuilder<? extends Configuration> createBuilder(ConfigurationDeclaration decl,
 Collection<BuilderParameters> params)
                                                                    throws Exception

Creates a new, uninitialized instance of the builder class managed by this provider. This implementation determines the builder class to be used by delegating to determineBuilderClass(). It then calls the constructor expecting the configuration class, the map with properties, and theallowFailOnInit flag. This implementation creates the result builder object directly, not using reflection. (The reflection-based approach of the base class does not work here because a combined configuration builder has constructors with a different signature.) It also performs some additional initializations.

Overrides:

createBuilder in class BaseConfigurationBuilderProvider

Parameters:

decl - the current ConfigurationDeclaration

params - initialization parameters for the new builder object

Returns:

the newly created builder instance

Throws:

Exception - if an error occurs

initializeParameterObjects

protected void initializeParameterObjects(ConfigurationDeclaration decl,
 Collection<BuilderParameters> params)
                                   throws Exception

Initializes the parameter objects with data stored in the current bean declaration. This method is called before the newly created builder instance is configured with the parameter objects. It maps attributes of the bean declaration to properties of parameter objects. In addition, it invokes the parent CombinedConfigurationBuilder so that the parameters object can inherit properties already defined for this builder. This implementation pre-fills basic parameters from the basic properties of the parent builder's result configuration.

Overrides:

initializeParameterObjects in class BaseConfigurationBuilderProvider

Parameters:

decl - the current ConfigurationDeclaration

params - the collection with (uninitialized) parameter objects

Throws:

Exception - if an error occurs