org.apache.tapestry5.internal.services.NullFieldStrategySourceImpl Maven / Gradle / Ivy
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Central module for Tapestry, containing interfaces to the Java
Servlet API and all core services and components.
// Copyright 2008, 2010 The Apache Software Foundation
//
// 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 org.apache.tapestry5.internal.services;
import org.apache.tapestry5.NullFieldStrategy;
import org.apache.tapestry5.ioc.util.AvailableValues;
import org.apache.tapestry5.ioc.util.UnknownValueException;
import org.apache.tapestry5.services.NullFieldStrategySource;
import java.util.Map;
public class NullFieldStrategySourceImpl implements NullFieldStrategySource
{
private final Map configuration;
public NullFieldStrategySourceImpl(Map configuration)
{
this.configuration = configuration;
}
public NullFieldStrategy get(String name)
{
NullFieldStrategy result = configuration.get(name);
if (result != null) return result;
throw new UnknownValueException(String.format("Unrecognized name '%s' locating a null field strategy.", name),
new AvailableValues("Configured null field strategies", configuration));
}
}