CrudSqlGenerator.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;

import org.jfaster.mango.crud.common.factory.*;
import org.jfaster.mango.descriptor.MethodDescriptor;
import org.jfaster.mango.descriptor.SqlGenerator;

import java.util.ArrayList;
import java.util.List;

/**
 * @author ash
 */
public class CrudSqlGenerator implements SqlGenerator {

  private static final List<BuilderFactory> commonBuilderFactories = new ArrayList<BuilderFactory>();
  private static final List<BuilderFactory> lookupBuilderFactories = new ArrayList<BuilderFactory>();
  static {
    commonBuilderFactories.add(new CommonAddBuilderFactory());
    commonBuilderFactories.add(new CommonAddAndReturnGeneratedIdBuilderFactory());
    commonBuilderFactories.add(new CommonBatchAddBuilderFactory());
    commonBuilderFactories.add(new CommonGetOneBuilderFactory());
    commonBuilderFactories.add(new CommonGetMultiBuilderFactory());
    commonBuilderFactories.add(new CommonUpdateBuilderFactory());
    commonBuilderFactories.add(new CommonBatchUpdateBuilderFactory());
    commonBuilderFactories.add(new CommonDeleteBuilderFactory());
  }

  @Override
  public String generateSql(MethodDescriptor md) {
    return getBuilder(md).buildSql();
  }

  private Builder getBuilder(MethodDescriptor md) {
    for (BuilderFactory commonBuilderFactory : commonBuilderFactories) {
      Builder builder = commonBuilderFactory.tryGetBuilder(md);
      if (builder != null) {
        return builder;
      }
    }
    for (BuilderFactory lookupBuilderFactory : lookupBuilderFactories) {
      Builder builder = lookupBuilderFactory.tryGetBuilder(md);
      if (builder != null) {
        return builder;
      }
    }
    // TODO
    throw new IllegalArgumentException();
  }

}