/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.deltaspike.jsf.api.config.view;
import org.apache.deltaspike.core.api.config.view.metadata.SkipMetaDataMerge;
import org.apache.deltaspike.core.api.config.view.metadata.ViewMetaData;
import org.apache.deltaspike.core.spi.config.view.ConfigPreProcessor;
import org.apache.deltaspike.core.spi.config.view.ViewConfigNode;
import org.apache.deltaspike.core.util.ClassUtils;
import org.apache.deltaspike.jsf.api.config.base.JsfBaseConfig;
import org.apache.deltaspike.jsf.api.literal.FolderLiteral;
import org.apache.deltaspike.jsf.util.NamingConventionUtils;
import java.lang.annotation.Annotation;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import java.util.Iterator;
import java.util.Set;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
* Optional annotation to specify folder specific meta-data
*/
//don't use @Inherited
@Target(TYPE)
@Retention(RUNTIME)
@Documented
@ViewMetaData(preProcessor = Folder.FolderConfigPreProcessor.class)
public @interface Folder
{
/**
* Allows to specify a custom (folder-)name
*
* @return name of the folder
*/
@SkipMetaDataMerge
String name() default ".";
/**
* Allows to add a custom inline path-builder
* (a custom default implementation can be configured globally via the config mechanism provided by DeltaSpike)
* @return path builder which allows to customize the naming conventions for the folder-name
*/
Class<? extends NameBuilder> folderNameBuilder() default DefaultFolderNameBuilder.class;
static class FolderConfigPreProcessor implements ConfigPreProcessor<Folder>
{
@Override
public Folder beforeAddToConfig(Folder folder, ViewConfigNode viewConfigNode)
{
boolean defaultValueReplaced = false;
/*
* file name
*/
NameBuilder folderNameBuilder = getFolderNameBuilder(folder);
String name = folderNameBuilder.build(folder, viewConfigNode);
if (folderNameBuilder.isDefaultValueReplaced())
{
defaultValueReplaced = true;
}
if (defaultValueReplaced)
{
Folder result = new FolderLiteral(name, folder.folderNameBuilder());
updateNodeMetaData(viewConfigNode, result);
return result;
}
return folder;
}
private void updateNodeMetaData(ViewConfigNode viewConfigNode, Folder folder)
{
Set<Annotation> metaData = viewConfigNode.getMetaData();
Iterator<? extends Annotation> metaDataIterator = metaData.iterator();
while (metaDataIterator.hasNext())
{
if (Folder.class.equals(metaDataIterator.next().annotationType()))
{
metaDataIterator.remove();
break;
}
}
metaData.add(folder);
}
private NameBuilder getFolderNameBuilder(Folder folder)
{
NameBuilder folderNameBuilder;
if (DefaultFolderNameBuilder.class.equals(folder.folderNameBuilder()))
{
String customDefaultFolderNameBuilderClassName =
JsfBaseConfig.ViewConfigCustomization.CUSTOM_DEFAULT_FOLDER_NAME_BUILDER;
if (customDefaultFolderNameBuilderClassName != null)
{
folderNameBuilder =
(NameBuilder) ClassUtils.tryToInstantiateClassForName(customDefaultFolderNameBuilderClassName);
}
else
{
folderNameBuilder = new DefaultFolderNameBuilder();
}
}
else
{
folderNameBuilder = ClassUtils.tryToInstantiateClass(folder.folderNameBuilder());
}
return folderNameBuilder;
}
}
//TODO discuss if we use a central interface in the spi package
//advantage: can be reused
//disadvantage: a wrong builder can get assigned more easily, show usages will list more
interface NameBuilder
{
String build(Folder folder, ViewConfigNode viewConfigNode);
boolean isDefaultValueReplaced();
}
class DefaultFolderNameBuilder implements NameBuilder
{
private boolean defaultValueReplaced = false;
@Override
public String build(Folder folder, ViewConfigNode viewConfigNode)
{
String name = folder.name();
if (name == null /*null used as marker value for dyn. added instances*/ || ".".equals(name) /*default*/)
{
name = NamingConventionUtils.toPath(viewConfigNode);
this.defaultValueReplaced = true;
}
if (name != null && name.startsWith("."))
{
name = NamingConventionUtils.toPath(viewConfigNode.getParent()) + name.substring(1);
this.defaultValueReplaced = true;
}
if (name != null && !name.startsWith(".") && !name.startsWith("/"))
{
name = NamingConventionUtils.toPath(viewConfigNode.getParent()) + name;
this.defaultValueReplaced = true;
}
if (name != null && !name.endsWith("/"))
{
name = name + "/";
this.defaultValueReplaced = true;
}
if (name != null && name.contains("//"))
{
name = name.replace("//", "/");
this.defaultValueReplaced = true;
}
return name;
}
public boolean isDefaultValueReplaced()
{
return defaultValueReplaced;
}
}
}