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/*
 * Copyright 2015 Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.schema.compiler;

import java.lang.annotation.Annotation;
import java.util.Set;
import java.util.stream.Stream;

import javax.annotation.processing.Processor;
import javax.annotation.processing.RoundEnvironment;
import javax.lang.model.element.TypeElement;

import br.com.objectos.code.AnnotationProcessor;
import br.com.objectos.code.Artifact;
import br.com.objectos.code.TypeInfo;
import br.com.objectos.metainf.Services;
import br.com.objectos.schema.annotation.Schema;
import br.com.objectos.schema.info.SchemaCompiler;

/**
 * @author [email protected] (Marcio Endo)
 */
@Services(Processor.class)
public class SchemaProcessor extends AnnotationProcessor {

  @Override
  protected Class annotationType() {
    return Schema.class;
  }

  @Override
  protected boolean filter(TypeInfo typeInfo) {
    return typeInfo.isClass();
  }

  @Override
  protected Stream generate(TypeInfo typeInfo) {
    return SchemaCompiler.generate(typeInfo).map(Artifact::of);
  }

  @Override
  protected void onStart(Set typeElements, RoundEnvironment roundEnv) {
    SchemaCompiler.clear();
    super.onStart(typeElements, roundEnv);
  }

}