/*
 * Copyright 2010-2012 Luca Garulli (l.garulli--at--orientechnologies.com)
 *
 * 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 com.orientechnologies.orient.core.command.script;

import com.orientechnologies.orient.core.db.ODatabase;
import com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx;
import com.orientechnologies.orient.core.db.record.ODatabaseRecordTx;
import com.orientechnologies.orient.core.exception.OConfigurationException;

/**
 * Orient wrapper class to use from scripts.
 * 
 * @author Luca Garulli (l.garulli--at--orientechnologies.com)
 * 
 */
public class OScriptOrientWrapper {
  protected final ODatabase db;

  public OScriptOrientWrapper() {
    this.db = null;
  }

  public OScriptOrientWrapper(final ODatabase db) {
    this.db = db;
  }

  public OScriptDocumentDatabaseWrapper getDatabase() {
    if (db == null)
      throw new OConfigurationException("No database instance found in context");

    if (db instanceof ODatabaseDocumentTx)
      return new OScriptDocumentDatabaseWrapper((ODatabaseDocumentTx) db);

    if (db instanceof ODatabaseRecordTx)
      return new OScriptDocumentDatabaseWrapper((ODatabaseRecordTx) db);

    throw new OConfigurationException("No valid database instance found in context: " + db + ", class: " + db.getClass());
  }
}
