com.vectorprint.configuration.binding.parameters.ParameterizableBindingFactoryImpl Maven / Gradle / Ivy

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A library for settings and parameterization of objects. Key features are support for data types, help for settings and parameters, annotations for ease of use. Settings and parameters both are Clonable and Serializable. More features for settings such as parsing a settingsfile, being observable, readonliness, caching etc. are available. The library contains javacc generated parsers for syntax support for properties, multi valued properties, parameterized objects and multi valued parameters.

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package com.vectorprint.configuration.binding.parameters;

/*-
 * #%L
 * Config
 * %%
 * Copyright (C) 2015 - 2018 VectorPrint
 * %%
 * 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.
 * #L%
 */


import com.vectorprint.VectorPrintRuntimeException;
import com.vectorprint.configuration.generated.parser.ParameterizableParserImpl;

import java.io.Reader;
import java.io.StringReader;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;

public class ParameterizableBindingFactoryImpl implements ParameterizableBindingFactory {

   private static final ParamBindingHelper bindingHelper = new EscapingBindingHelper();
   private static final Constructor constructor;
   
   static {
      try {
         constructor = ParameterizableParserImpl.class.getConstructor(Reader.class);
      } catch (NoSuchMethodException | SecurityException ex) {
         throw new VectorPrintRuntimeException(ex);
      }
   }

   /**
    * instantiate parser, call {@link ParameterizableParser#setBindingHelper(com.vectorprint.configuration.binding.parameters.ParamBindingHelper) } and return the parser.
    * @param input
    * @return 
    */
   @Override
   public ParameterizableParser getParser(Reader input) {
      try {
         ParameterizableParser newInstance = constructor.newInstance(input);
         newInstance.setBindingHelper(getBindingHelper());
         return newInstance;
      } catch (InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException | SecurityException ex) {
         throw new VectorPrintRuntimeException(ex);
      }
   }

   private static final Reader r = new StringReader("");

   /**
    * instantiate serializer, call {@link ParameterizableSerializer#setBindingHelper(com.vectorprint.configuration.binding.parameters.ParamBindingHelper)  } and return the serializer.
    * @return 
    */
   @Override
   public ParameterizableSerializer getSerializer() {
      try {
         ParameterizableSerializer ps = (ParameterizableSerializer) constructor.newInstance(r);
         ps.setBindingHelper(getBindingHelper());
         return ps;
      } catch (InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException | SecurityException ex) {
         throw new VectorPrintRuntimeException(ex);
      }
   }

   @Override
   public ParamBindingHelper getBindingHelper() {
      return bindingHelper;
   }

   @Override
   public String toString() {
      return "ParameterizableBindingFactoryImpl{" + "bindingHelper=" + getBindingHelper().getClass() + ", parserClass=" + ParameterizableParserImpl.class + ", serializerClass=" + ParameterizableParserImpl.class + '}';
   }

}