org.apache.cocoon.components.treeprocessor
Class DefaultTreeBuilder

java.lang.Object
  org.apache.avalon.framework.logger.AbstractLogEnabled
      org.apache.cocoon.components.treeprocessor.DefaultTreeBuilder

All Implemented Interfaces:

RoleManageable, Poolable, Recyclable, Disposable, Component, Composable, Recomposable, Configurable, Contextualizable, LogEnabled, TreeBuilder

Direct Known Subclasses:

SitemapLanguage

public class DefaultTreeBuilder
extends AbstractLogEnabled
implements TreeBuilder, Recomposable, Configurable, Contextualizable, RoleManageable, Recyclable, Disposable

Version:

CVS $Id: DefaultTreeBuilder.html 1304258 2012-03-23 10:09:27Z ilgrosso $

Author:

Sylvain Wallez

Field Summary

protected Map	attributes
protected ComponentSelector	builderSelector Selector for ProcessingNodeBuilders
protected Configuration	configuration
protected Context	context
protected String	fileName
protected String	languageName
protected LifecycleHelper	lifecycle
protected ComponentManager	manager Component manager created by createComponentManager(Configuration).
protected String	namespace
protected String	parameterElement
protected ComponentManager	parentManager The parent component manager, set using compose() and recompose() (implementation of Recomposable).
protected RoleManager	parentRoleManager The parent role manager, set using setRoleManager (implementation of RoleManageable).
protected ConcreteTreeProcessor	processor The tree processor that we're building.
protected RoleManager	roleManager Role manager result created by createRoleManager().

Constructor Summary

DefaultTreeBuilder()

Method Summary

ProcessingNode	build(Configuration tree) Build a processing tree from a Configuration.
ProcessingNode	build(Source source)
void	compose(ComponentManager manager)
void	configure(Configuration config) Configurable
void	contextualize(Context context)
protected ComponentSelector	createBuilderSelector() Create a ComponentSelector for ProcessingNodeBuilders.
protected ComponentManager	createComponentManager(Configuration tree) Create a component manager that will be used for all Composable ProcessingNodeBuilders and ProcessingNodes.
ProcessingNodeBuilder	createNodeBuilder(Configuration config)
protected RoleManager	createRoleManager() Create a role manager that will be used by all RoleManageable components.
protected ProcessingNode	createTree(Configuration tree) Create the tree once component manager and node builders have been set up.
void	dispose()
Object	getAttribute(String name) Get the value of an attribute.
List	getDisposableNodes() Return the list of ProcessingNodes part of this tree that are Disposable.
String	getFileName()
String	getLanguage() Returns the language that is being built (e.g.
protected LocationImpl	getLocation(Configuration config)
String	getNamespace() Get the namespace URI that builders should use to find their nodes.
String	getParameterName() Returns the name of the parameter element.
protected Map	getParameters(Configuration config, Location location) Get <xxx:parameter> elements as a Map of ListOfMapResolvers, that can be turned into parameters using ListOfMapResolver.buildParameters().
ConcreteTreeProcessor	getProcessor()
ProcessingNode	getRegisteredNode(String name)
ComponentManager	getSitemapComponentManager() Return the sitemap component manager
String	getTypeForStatement(Configuration statement, String role) Get the type for a statement : it returns the 'type' attribute if present, and otherwhise the default hint of the ExtendedSelector designated by role role.
protected void	linkNodes() Resolve links : call linkNode() on all LinkedProcessingNodeBuilders.
void	recompose(ComponentManager manager)
void	recycle()
boolean	registerNode(String name, ProcessingNode node) Register a ProcessingNode under a given name.
void	setAttribute(String name, Object value) Add an attribute.
void	setProcessor(ConcreteTreeProcessor processor)
void	setRoleManager(RoleManager rm)
ProcessingNode	setupNode(ProcessingNode node, Configuration config) Setup a ProcessingNode by setting its location, calling all the lifecycle interfaces it implements and giving it the parameter map if it's a ParameterizableNode.

Methods inherited from class org.apache.avalon.framework.logger.AbstractLogEnabled

enableLogging, getLogger, setupLogger, setupLogger, setupLogger

Methods inherited from class java.lang.Object

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

Field Detail

attributes

protected Map attributes

processor

protected ConcreteTreeProcessor processor

The tree processor that we're building.

context

protected Context context

parentManager

protected ComponentManager parentManager

The parent component manager, set using compose() and recompose() (implementation of Recomposable).

parentRoleManager

protected RoleManager parentRoleManager

The parent role manager, set using setRoleManager (implementation of RoleManageable).

configuration

protected Configuration configuration

manager

protected ComponentManager manager

Component manager created by createComponentManager(Configuration).

roleManager

protected RoleManager roleManager

Role manager result created by createRoleManager().

builderSelector

protected ComponentSelector builderSelector

Selector for ProcessingNodeBuilders

lifecycle

protected LifecycleHelper lifecycle

namespace

protected String namespace

parameterElement

protected String parameterElement

languageName

protected String languageName

fileName

protected String fileName

Constructor Detail

DefaultTreeBuilder

public DefaultTreeBuilder()

Method Detail

contextualize

public void contextualize(Context context)
                   throws ContextException

Specified by:

contextualize in interface Contextualizable

Throws:

ContextException

compose

public void compose(ComponentManager manager)
             throws ComponentException

Specified by:

compose in interface Composable

Throws:

ComponentException

recompose

public void recompose(ComponentManager manager)
               throws ComponentException

Specified by:

recompose in interface Recomposable

Throws:

ComponentException

setRoleManager

public void setRoleManager(RoleManager rm)

Specified by:

setRoleManager in interface RoleManageable

configure

public void configure(Configuration config)
               throws ConfigurationException

Configurable

Specified by:

configure in interface Configurable

Throws:

ConfigurationException

setAttribute

public void setAttribute(String name,
                         Object value)

Description copied from interface: TreeBuilder

Add an attribute. Useful to transmit information between distant (in the tree) node builders

Specified by:

setAttribute in interface TreeBuilder

getAttribute

public Object getAttribute(String name)

Description copied from interface: TreeBuilder

Get the value of an attribute.

Specified by:

getAttribute in interface TreeBuilder

createRoleManager

protected RoleManager createRoleManager()
                                 throws Exception

Create a role manager that will be used by all RoleManageable components. The default here is to create a role manager with the contents of the <roles> element of the configuration.

Subclasses can redefine this method to create roles from other sources than the one used here.

Returns:

the role manager

Throws:

Exception

createComponentManager

protected ComponentManager createComponentManager(Configuration tree)
                                           throws Exception

Create a component manager that will be used for all Composable ProcessingNodeBuilders and ProcessingNodes.

The default here is to simply return the manager set by compose(), i.e. the component manager set by the calling TreeProcessor.

Subclasses can redefine this method to create a component manager local to a tree, such as for sitemap's <map:components>.

Returns:

a component manager

Throws:

Exception

createBuilderSelector

protected ComponentSelector createBuilderSelector()
                                           throws Exception

Create a ComponentSelector for ProcessingNodeBuilders. It creates a selector with the contents of the "node" element of the configuration.

Returns:

a selector for node builders

Throws:

Exception

setProcessor

public void setProcessor(ConcreteTreeProcessor processor)

Specified by:

setProcessor in interface TreeBuilder

getProcessor

public ConcreteTreeProcessor getProcessor()

Specified by:

getProcessor in interface TreeBuilder

getLanguage

public String getLanguage()

Returns the language that is being built (e.g. "sitemap").

Specified by:

getLanguage in interface TreeBuilder

getParameterName

public String getParameterName()

Returns the name of the parameter element.

Specified by:

getParameterName in interface TreeBuilder

registerNode

public boolean registerNode(String name,
                            ProcessingNode node)

Description copied from interface: TreeBuilder

Register a ProcessingNode under a given name. For example, ResourceNodeBuilder stores here the ProcessingNodes it produces for use by sitemap pipelines. This allows to turn the tree into a graph. If a node with the name is already registed, the process fails!

Specified by:

registerNode in interface TreeBuilder

Returns:

If the node could be registered, true is returned; otherwise false.

See Also:

TreeBuilder.registerNode(java.lang.String, org.apache.cocoon.components.treeprocessor.ProcessingNode)

getRegisteredNode

public ProcessingNode getRegisteredNode(String name)

Specified by:

getRegisteredNode in interface TreeBuilder

createNodeBuilder

public ProcessingNodeBuilder createNodeBuilder(Configuration config)
                                        throws Exception

Specified by:

createNodeBuilder in interface TreeBuilder

Throws:

Exception

createTree

protected ProcessingNode createTree(Configuration tree)
                             throws Exception

Create the tree once component manager and node builders have been set up. Can be overriden by subclasses to perform pre/post tree creation operations.

Throws:

Exception

linkNodes

protected void linkNodes()
                  throws Exception

Resolve links : call linkNode() on all LinkedProcessingNodeBuilders. Can be overriden by subclasses to perform pre/post resolution operations.

Throws:

Exception

getNamespace

public String getNamespace()

Get the namespace URI that builders should use to find their nodes.

Specified by:

getNamespace in interface TreeBuilder

build

public ProcessingNode build(Source source)
                     throws Exception

Specified by:

build in interface TreeBuilder

Throws:

Exception

getFileName

public String getFileName()

Specified by:

getFileName in interface TreeBuilder

build

public ProcessingNode build(Configuration tree)
                     throws Exception

Build a processing tree from a Configuration.

Specified by:

build in interface TreeBuilder

Throws:

Exception

getDisposableNodes

public List getDisposableNodes()

Return the list of ProcessingNodes part of this tree that are Disposable. Care should be taken to properly dispose them before trashing the processing tree.

Specified by:

getDisposableNodes in interface TreeBuilder

getSitemapComponentManager

public ComponentManager getSitemapComponentManager()

Return the sitemap component manager

Specified by:

getSitemapComponentManager in interface TreeBuilder

setupNode

public ProcessingNode setupNode(ProcessingNode node,
                                Configuration config)
                         throws Exception

Setup a ProcessingNode by setting its location, calling all the lifecycle interfaces it implements and giving it the parameter map if it's a ParameterizableNode.

As a convenience, the node is returned by this method to allow constructs like return treeBuilder.setupNode(new MyNode(), config).

Specified by:

setupNode in interface TreeBuilder

Throws:

Exception

getLocation

protected LocationImpl getLocation(Configuration config)

getParameters

protected Map getParameters(Configuration config,
                            Location location)
                     throws ConfigurationException

Get <xxx:parameter> elements as a Map of ListOfMapResolvers, that can be turned into parameters using ListOfMapResolver.buildParameters().

Returns:

the Map of ListOfMapResolver, or null if there are no parameters.

Throws:

ConfigurationException

getTypeForStatement

public String getTypeForStatement(Configuration statement,
                                  String role)
                           throws ConfigurationException

Get the type for a statement : it returns the 'type' attribute if present, and otherwhise the default hint of the ExtendedSelector designated by role role.

Specified by:

getTypeForStatement in interface TreeBuilder

Throws:

ConfigurationException - if the default type could not be found.

recycle

public void recycle()

Specified by:

recycle in interface Recyclable

dispose

public void dispose()

Specified by:

dispose in interface Disposable