zkoss/zk

/* WrongValuePropertyImpl.java

    Purpose:
        
    Description:
        
    History:
        2012/2/22 Created by Dennis Chen

Copyright (C) 2011 Potix Corporation. All Rights Reserved.
*/
package org.zkoss.bind.impl;

import java.io.Serializable;

import org.zkoss.bind.Property;
import org.zkoss.zk.ui.WrongValueException;
import org.zkoss.zk.ui.WrongValuesException;

/**
 * // ZK-878 Exception if binding a form with errorMessage
 * To handle wrong value exception when getting a component value.
 * @author dennis
 * @since 6.0.1
 */
public class WrongValuePropertyImpl implements Property, Serializable {
    private static final long serialVersionUID = 1463169907348730644L;
    private final Object _base;
    private final String _property;
    private final Object _wrongValueException;

    public WrongValuePropertyImpl(Object base, String property, Object wrongValueException) {
        _base = base;
        _property = property;
        if (!(wrongValueException instanceof WrongValueException
                || wrongValueException instanceof WrongValuesException)) {
            throw new IllegalArgumentException("not a wrong value exception, is " + wrongValueException);
        }
        _wrongValueException = wrongValueException;
    }

    public Object getBase() {
        return _base;
    }

    public Object getValue() {
        return null;
    }

    public String getProperty() {
        return _property;
    }

    public WrongValueException[] getWrongValueExceptions() {
        if (_wrongValueException instanceof WrongValueException) {
            return new WrongValueException[] { (WrongValueException) _wrongValueException };
        } else if (_wrongValueException instanceof WrongValuesException) {
            return ((WrongValuesException) _wrongValueException).getWrongValueExceptions();
        }
        return null;
    }

    public String toString() {
        return new StringBuilder().append(getClass().getSimpleName()).append("@")
                .append(Integer.toHexString(hashCode())).append(",base:").append(getBase()).append(",property:")
                .append(getProperty()).append(",value:").append(getValue()).toString();
    }

    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((_base == null) ? 0 : _base.hashCode());
        result = prime * result + ((_property == null) ? 0 : _property.hashCode());
        result = prime * result + ((_wrongValueException == null) ? 0 : _wrongValueException.hashCode());
        return result;
    }

    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        WrongValuePropertyImpl other = (WrongValuePropertyImpl) obj;
        if (_base == null) {
            if (other._base != null)
                return false;
        } else if (!_base.equals(other._base))
            return false;
        if (_property == null) {
            if (other._property != null)
                return false;
        } else if (!_property.equals(other._property))
            return false;
        if (_wrongValueException == null) {
            if (other._wrongValueException != null)
                return false;
        } else if (!_wrongValueException.equals(other._wrongValueException))
            return false;
        return true;
    }

}