freemarker.cache.ConditionalTemplateConfigurationFactory Maven / Gradle / Ivy
/*
* 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 freemarker.cache;
import java.io.IOException;
import freemarker.core.TemplateConfiguration;
import freemarker.template.Configuration;
/**
* Returns the given {@link TemplateConfiguration} directly, or another {@link TemplateConfigurationFactory}'s result, when
* the specified matcher matches the template source.
*
* @since 2.3.24
*/
public class ConditionalTemplateConfigurationFactory extends TemplateConfigurationFactory {
private final TemplateSourceMatcher matcher;
private final TemplateConfiguration templateConfiguration;
private final TemplateConfigurationFactory templateConfigurationFactory;
public ConditionalTemplateConfigurationFactory(
TemplateSourceMatcher matcher, TemplateConfigurationFactory templateConfigurationFactory) {
this.matcher = matcher;
this.templateConfiguration = null;
this.templateConfigurationFactory = templateConfigurationFactory;
}
public ConditionalTemplateConfigurationFactory(
TemplateSourceMatcher matcher, TemplateConfiguration templateConfiguration) {
this.matcher = matcher;
this.templateConfiguration = templateConfiguration;
this.templateConfigurationFactory = null;
}
@Override
public TemplateConfiguration get(String sourceName, Object templateSource)
throws IOException, TemplateConfigurationFactoryException {
if (matcher.matches(sourceName, templateSource)) {
if (templateConfigurationFactory != null) {
return templateConfigurationFactory.get(sourceName, templateSource);
} else {
return templateConfiguration;
}
} else {
return null;
}
}
@Override
protected void setConfigurationOfChildren(Configuration cfg) {
if (templateConfiguration != null) {
templateConfiguration.setParentConfiguration(cfg);
}
if (templateConfigurationFactory != null) {
templateConfigurationFactory.setConfiguration(cfg);
}
}
}