Android Open Source - JsonPullParser Mvel Template

• Back to Development/json  ↑

From Project

Back to project page JsonPullParser.

License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2011 vvakame <vvakame@gmail.com>
 */*w  w w.j  a v  a  2s  .  c o  m*/
 * 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 net.vvakame.util.jsonpullparser.factory.template;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.Writer;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import javax.tools.JavaFileObject;

import net.vvakame.util.jsonpullparser.factory.JsonKeyModel;
import net.vvakame.util.jsonpullparser.factory.JsonModelModel;
import net.vvakame.util.jsonpullparser.factory.Log;
import net.vvakame.util.jsonpullparser.factory.StoreJsonModel;

import org.mvel2.templates.TemplateRuntime;

/**
 * MVEL templating facility.
 * @author vvakame
 */
public class MvelTemplate {

  private MvelTemplate() {
  }

  /**
   * Generates source code into the given file object from the given data model, utilizing the templating engine.
   * @param fileObject Target file object
   * @param model Data model for source code generation
   * @throws IOException
   * @author vvakame
   */
  public static void writeGen(JavaFileObject fileObject, JsonModelModel model) throws IOException {
    Map<String, Object> map = convModelToMap(model);

    Writer writer = fileObject.openWriter();
    PrintWriter printWriter = new PrintWriter(writer);
    String generated =
        (String) TemplateRuntime.eval(getTemplateString("JsonModelGen.java.mvel"), map);
    try {
      printWriter.write(generated);
      printWriter.flush();
      printWriter.close();
    } catch (Exception e) {
      throw new RuntimeException("error raised in process " + model.getTarget(), e);
    }
  }

  /**
   * Generates source code into the given file object from the given data model, utilizing the templating engine.
   * @param fileObject Target file object
   * @param model Data model for source code generation
   * @throws IOException
   * @author vvakame
   */
  public static void writeJsonMeta(JavaFileObject fileObject, JsonModelModel model)
      throws IOException {
    Map<String, Object> map = convModelToMap(model);

    Writer writer = fileObject.openWriter();
    PrintWriter printWriter = new PrintWriter(writer);
    String generated =
        (String) TemplateRuntime.eval(getTemplateString("JsonModelMeta.java.mvel"), map);
    try {
      printWriter.write(generated);
      printWriter.flush();
      printWriter.close();
    } catch (Exception e) {
      throw new RuntimeException("error raised in process " + model.getTarget(), e);
    }
  }

  static Map<String, Object> convModelToMap(JsonModelModel model) {
    Map<String, Object> map = new LinkedHashMap<String, Object>();
    map.put("packageName", model.getPackageName());
    map.put("postfix", model.getPostfix());
    map.put("existsBase", model.isExistsBase());
    map.put("targetBase", model.getTargetBase());
    map.put("target", model.getTarget());
    map.put("targetNew", model.getTargetNew());
    {
      List<Map<String, String>> jsonKeys = new ArrayList<Map<String, String>>();
      for (JsonKeyModel jsonKey : model.getKeys()) {
        if (!jsonKey.isIn()) {
          continue;
        }
        Map<String, String> toMap = convJsonModelToMap(jsonKey);
        jsonKeys.add(toMap);
      }
      map.put("inElements", jsonKeys);
    }
    {
      List<Map<String, String>> jsonKeys = new ArrayList<Map<String, String>>();
      for (JsonKeyModel jsonKey : model.getKeys()) {
        if (!jsonKey.isOut()) {
          continue;
        }
        Map<String, String> toMap = convJsonModelToMap(jsonKey);
        jsonKeys.add(toMap);
      }
      map.put("outElements", jsonKeys);
    }
    {
      List<Map<String, String>> jsonKeys = new ArrayList<Map<String, String>>();
      for (JsonKeyModel jsonKey : model.getKeys()) {
        Map<String, String> toMap = convJsonModelToMap(jsonKey);
        jsonKeys.add(toMap);
      }
      map.put("allElements", jsonKeys);
    }
    {
      List<Map<String, String>> jsonKeys = new ArrayList<Map<String, String>>();
      for (JsonKeyModel jsonKey : model.getInheritKeys()) {
        Map<String, String> toMap = convJsonModelToMap(jsonKey);
        jsonKeys.add(toMap);
      }
      map.put("inheritElements", jsonKeys);
    }
    {
      Map<String, Object> toMap = convStoreJsonModelToMap(model.getStoreJson());
      map.put("storeJsonElement", toMap);
    }
    map.put("treatUnknownKeyAsError", model.isTreatUnknownKeyAsError());
    map.put("genToPackagePrivate", model.isGenToPackagePrivate());
    map.put("jsonMetaToPackagePrivate", model.isJsonMetaToPackagePrivate());

    return map;
  }

  static Map<String, String> convJsonModelToMap(JsonKeyModel key) {
    Map<String, String> map = new LinkedHashMap<String, String>();
    map.put("key", key.getKey());
    map.put("originalName", key.getOriginalName());
    map.put("modelName", key.getModelName());
    map.put("parameterClass", key.getParameterClass());
    map.put("genName", key.getGenName());
    map.put("setter", key.getSetter());
    map.put("getter", key.getGetter());
    map.put("kind", key.getKind().name());
    map.put("converter", key.getConverter());
    map.put("subKind", key.getSubKind().name());

    return map;
  }

  static Map<String, Object> convStoreJsonModelToMap(StoreJsonModel storeJson) {
    Map<String, Object> map = new LinkedHashMap<String, Object>();
    map.put("storeJson", storeJson.isStoreJson());
    map.put("treatLogDisabledAsError", storeJson.isTreatLogDisabledAsError());
    map.put("setter", storeJson.getSetter());

    return map;
  }

  static String getTemplateString(String resourceName) {
    InputStream stream = MvelTemplate.class.getClassLoader().getResourceAsStream(resourceName);
    try {
      String template = streamToString(stream);
      // Log.d(template);
      return template;
    } catch (IOException e) {
      Log.e(e);
      return null;
    }
  }

  static String streamToString(InputStream is) throws IOException {
    if (is == null) {
      Log.e("not expected null value.");
      throw new IllegalStateException("not expected null value.");
    }
    BufferedReader br = new BufferedReader(new InputStreamReader(is, "utf-8"));
    StringBuilder builder = new StringBuilder();
    String line;
    while ((line = br.readLine()) != null) {
      builder.append(line).append("\n");
    }

    return builder.toString();
  }
}

Java Source Code List

• Back to Development/json  ↑