/*
 *  Copyright 2004 Clinton Begin
 *
 *  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.ibatis.common.beans;

import java.util.List;

/**
 * Abstract class used to help development of Probe implementations
 */
public abstract class BaseProbe implements Probe {

  protected abstract void setProperty(Object object, String property, Object value);

  protected abstract Object getProperty(Object object, String property);

  /**
   * Returns an array of the readable properties exposed by an object
   *
   * @param object - the object
   * @return The array of property names
   */
  public abstract String[] getReadablePropertyNames(Object object);

  /**
   * Returns an array of the writeable properties exposed by an object
   *
   * @param object - the object
   * @return The array of property names
   */
  public abstract String[] getWriteablePropertyNames(Object object);

  protected Object getIndexedProperty(Object object, String indexedName) {

    Object value = null;

    try {
      String name = indexedName.substring(0, indexedName.indexOf('['));
      int i = Integer.parseInt(indexedName.substring(indexedName.indexOf('[') + 1, indexedName.indexOf(']')));
      Object list = null;
      if("".equals(name)) {
        list = object;        
      } else {
        list = getProperty(object, name);
      }

      if (list instanceof List) {
        value = ((List) list).get(i);
      } else if (list instanceof Object[]) {
        value = ((Object[]) list)[i];
      } else if (list instanceof char[]) {
        value = new Character(((char[]) list)[i]);
      } else if (list instanceof boolean[]) {
        value = new Boolean(((boolean[]) list)[i]);
      } else if (list instanceof byte[]) {
        value = new Byte(((byte[]) list)[i]);
      } else if (list instanceof double[]) {
        value = new Double(((double[]) list)[i]);
      } else if (list instanceof float[]) {
        value = new Float(((float[]) list)[i]);
      } else if (list instanceof int[]) {
        value = new Integer(((int[]) list)[i]);
      } else if (list instanceof long[]) {
        value = new Long(((long[]) list)[i]);
      } else if (list instanceof short[]) {
        value = new Short(((short[]) list)[i]);
      } else {
        throw new ProbeException("The '" + name + "' property of the " + object.getClass().getName() + " class is not a List or Array.");
      }

    } catch (ProbeException e) {
      throw e;
    } catch (Exception e) {
      throw new ProbeException("Error getting ordinal list from JavaBean. Cause " + e, e);
    }

    return value;
  }

  protected Class getIndexedType(Object object, String indexedName) {

    Class value = null;

    try {
      String name = indexedName.substring(0, indexedName.indexOf('['));
      int i = Integer.parseInt(indexedName.substring(indexedName.indexOf('[') + 1, indexedName.indexOf(']')));
      Object list = null;
      if(!"".equals(name)) {
        list = getProperty(object, name);
      } else {
        list = object;
      }

      if (list instanceof List) {
        value = ((List) list).get(i).getClass();
      } else if (list instanceof Object[]) {
        value = ((Object[]) list)[i].getClass();
      } else if (list instanceof char[]) {
        value = Character.class;
      } else if (list instanceof boolean[]) {
        value = Boolean.class;
      } else if (list instanceof byte[]) {
        value = Byte.class;
      } else if (list instanceof double[]) {
        value = Double.class;
      } else if (list instanceof float[]) {
        value = Float.class;
      } else if (list instanceof int[]) {
        value = Integer.class;
      } else if (list instanceof long[]) {
        value = Long.class;
      } else if (list instanceof short[]) {
        value = Short.class;
      } else {
        throw new ProbeException("The '" + name + "' property of the " + object.getClass().getName() + " class is not a List or Array.");
      }

    } catch (ProbeException e) {
      throw e;
    } catch (Exception e) {
      throw new ProbeException("Error getting ordinal list from JavaBean. Cause " + e, e);
    }

    return value;
  }

  protected void setIndexedProperty(Object object, String indexedName, Object value) {

    try {
      String name = indexedName.substring(0, indexedName.indexOf('['));
      int i = Integer.parseInt(indexedName.substring(indexedName.indexOf('[') + 1, indexedName.indexOf(']')));
      Object list = getProperty(object, name);
      if (list instanceof List) {
        ((List) list).set(i, value);
      } else if (list instanceof Object[]) {
        ((Object[]) list)[i] = value;
      } else if (list instanceof char[]) {
        ((char[]) list)[i] = ((Character) value).charValue();
      } else if (list instanceof boolean[]) {
        ((boolean[]) list)[i] = ((Boolean) value).booleanValue();
      } else if (list instanceof byte[]) {
        ((byte[]) list)[i] = ((Byte) value).byteValue();
      } else if (list instanceof double[]) {
        ((double[]) list)[i] = ((Double) value).doubleValue();
      } else if (list instanceof float[]) {
        ((float[]) list)[i] = ((Float) value).floatValue();
      } else if (list instanceof int[]) {
        ((int[]) list)[i] = ((Integer) value).intValue();
      } else if (list instanceof long[]) {
        ((long[]) list)[i] = ((Long) value).longValue();
      } else if (list instanceof short[]) {
        ((short[]) list)[i] = ((Short) value).shortValue();
      } else {
        throw new ProbeException("The '" + name + "' property of the " + object.getClass().getName() + " class is not a List or Array.");
      }
    } catch (ProbeException e) {
      throw e;
    } catch (Exception e) {
      throw new ProbeException("Error getting ordinal value from JavaBean. Cause " + e, e);
    }
  }
}