com.nesscomputing.velocity.InjectedTemplateGroup Maven / Gradle / Ivy
/**
* Copyright (C) 2012 Ness Computing, Inc.
*
* 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 com.nesscomputing.velocity;
import org.apache.velocity.Template;
import com.google.inject.Binding;
import com.google.inject.Injector;
import com.google.inject.Key;
import com.google.inject.name.Names;
class InjectedTemplateGroup extends AbstractTemplateGroup {
private final String prefix;
private final Injector injector;
public InjectedTemplateGroup(String prefix, Injector injector) {
this.prefix = prefix;
this.injector = injector;
}
@Override
public Template find(String name) {
// TODO: not terribly happy with looking up things in the injector at runtime
Binding binding = injector.getExistingBinding(Key.get(Template.class, Names.named(prefix + "." + name)));
if (binding == null) {
return null;
}
return binding.getProvider().get();
}
}