CommonBuilderFactory.java

/*
 * Copyright 2014 mango.jfaster.org
 *
 * The Mango Project 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 org.jfaster.mango.crud.common.factory;

import org.jfaster.mango.crud.Builder;
import org.jfaster.mango.crud.BuilderFactory;
import org.jfaster.mango.crud.CrudMeta;
import org.jfaster.mango.crud.common.builder.CommonBuilder;

import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;

/**
 * @author ash
 */
public abstract class CommonBuilderFactory extends BuilderFactory {

  @Override
  public Builder doTryGetBuilder(String name, Type returnType, List<Type> parameterTypes, Class<?> entityClass, Class<?> idClass) {
    return (nameMatched(name) &&
        returnTypeMatched(returnType, entityClass) &&
        parameterTypesMatched(parameterTypes, entityClass, idClass)) ?
        createCommonBuilder(new CrudMeta(entityClass)) :
        null;
  }

  private boolean nameMatched(String actualName) {
    return expectedMethodName().equals(actualName);
  }

  private boolean returnTypeMatched(Type returnType, Class<?> entityClass) {
    return expectedReturnType(entityClass).equals(returnType);
  }

  private boolean parameterTypesMatched(List<Type> parameterTypes, Class<?> entityClass, Class<?> idClass) {
    List<Type> types = new ArrayList<Type>();
    types.add(expectedParameterType(entityClass, idClass));
    return types.equals(parameterTypes);
  }

  abstract String expectedMethodName();

  abstract Type expectedReturnType(Class<?> entityClass);

  abstract Type expectedParameterType(Class<?> entityClass, Class<?> idClass);

  abstract CommonBuilder createCommonBuilder(CrudMeta cm);

}