com.appslandia.plum.base.ResponseEncoderProvider Maven / Gradle / Ivy

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// The MIT License (MIT)
// Copyright © 2015 AppsLandia. All rights reserved.

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

package com.appslandia.plum.base;

import java.util.Collections;
import java.util.Map;

import com.appslandia.common.base.CaseInsensitiveMap;
import com.appslandia.common.base.InitializeObject;
import com.appslandia.common.utils.Asserts;
import com.appslandia.plum.utils.ServletUtils;

import jakarta.servlet.http.HttpServletRequest;

/**
 *
 * @author Loc Ha
 *
 */
public class ResponseEncoderProvider extends InitializeObject {

  private Map responseEncoderMap = new CaseInsensitiveMap<>();

  @Override
  protected void init() throws Exception {
    this.responseEncoderMap = Collections.unmodifiableMap(this.responseEncoderMap);
  }

  public void addResponseEncoder(String encoding, ResponseEncoder impl) {
    this.assertNotInitialized();
    this.responseEncoderMap.put(encoding, impl);
  }

  public ResponseEncoder getResponseEncoder(String encoding) {
    this.initialize();

    ResponseEncoder impl = this.responseEncoderMap.get(encoding);
    return Asserts.notNull(impl);
  }

  public ResponseEncoder getResponseEncoder(HttpServletRequest request) {
    this.initialize();

    String bestEncoding = ServletUtils.getBestEncoding(request, this.responseEncoderMap.keySet());
    if (bestEncoding == null) {
      return null;
    }
    return this.responseEncoderMap.get(bestEncoding);
  }
}