/*
* Copyright 2014 Attila Szegedi, Daniel Dekany, Jonathan Revusky
*
* Licensed 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 freemarker.cache;
import java.io.IOException;
import freemarker.core.TemplateConfigurer;
import freemarker.template.Configuration;
/**
* Returns the given {@link TemplateConfigurer} directly, or another {@link TemplateConfigurerFactory}'s result, when
* the specified matcher matches the template source.
*
* @since 2.3.24
*/
public class ConditionalTemplateConfigurerFactory extends TemplateConfigurerFactory {
private final TemplateSourceMatcher matcher;
private final TemplateConfigurer templateConfigurer;
private final TemplateConfigurerFactory templateConfigurerFactory;
public ConditionalTemplateConfigurerFactory(
TemplateSourceMatcher matcher, TemplateConfigurerFactory templateConfigurerFactory) {
this.matcher = matcher;
this.templateConfigurer = null;
this.templateConfigurerFactory = templateConfigurerFactory;
}
public ConditionalTemplateConfigurerFactory(TemplateSourceMatcher matcher, TemplateConfigurer templateConfigurer) {
this.matcher = matcher;
this.templateConfigurer = templateConfigurer;
this.templateConfigurerFactory = null;
}
@Override
public TemplateConfigurer get(String sourceName, Object templateSource)
throws IOException, TemplateConfigurerFactoryException {
if (matcher.matches(sourceName, templateSource)) {
if (templateConfigurerFactory != null) {
return templateConfigurerFactory.get(sourceName, templateSource);
} else {
return templateConfigurer;
}
} else {
return null;
}
}
@Override
protected void setConfigurationOfChildren(Configuration cfg) {
if (templateConfigurer != null) {
templateConfigurer.setParentConfiguration(cfg);
}
if (templateConfigurerFactory != null) {
templateConfigurerFactory.setConfiguration(cfg);
}
}
}