org.apache.ibatis.migration.hook.SqlHookScript Maven / Gradle / Ivy

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/**
 *    Copyright 2010-2017 the original author or authors.
 *
 *    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 org.apache.ibatis.migration.hook;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.io.StringReader;
import java.util.Map;
import java.util.Properties;

import org.apache.ibatis.migration.MigrationException;
import org.apache.ibatis.migration.utils.Util;
import org.apache.ibatis.parsing.PropertyParser;

public class SqlHookScript implements HookScript {

  protected final File scriptFile;
  protected final String charset;
  protected final Properties variables;
  protected final PrintStream printStream;

  public SqlHookScript(File scriptFile, String charset, String[] options, Properties variables,
      PrintStream printStream) {
    super();
    this.scriptFile = scriptFile;
    this.charset = charset;
    this.variables = variables;
    this.printStream = printStream;
    // options can be local variables in key=value format.
    for (String option : options) {
      int sep = option.indexOf('=');
      if (sep > -1) {
        this.variables.put(option.substring(0, sep), option.substring(sep + 1));
      }
    }
  }

  @Override
  public void execute(Map bindingMap) {
    HookContext context = (HookContext) bindingMap.get(MigrationHook.HOOK_CONTEXT);
    printStream.println(Util.horizontalLine("Applying SQL hook: " + scriptFile.getName(), 80));

    FileInputStream inputStream = null;
    try {
      inputStream = new FileInputStream(scriptFile);
      ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
      byte[] buffer = new byte[1024];
      int length;
      while ((length = inputStream.read(buffer)) != -1) {
        outputStream.write(buffer, 0, length);
      }
      context.executeSql(new StringReader(PropertyParser.parse(outputStream.toString(charset), variables)));
    } catch (IOException e) {
      throw new MigrationException("Error occurred while running SQL hook script.", e);
    } finally {
      try {
        if (inputStream != null) {
          inputStream.close();
        }
      } catch (IOException e) {
        // ignore
      }
    }
  }
}