com.xyz.util.PropertyFilter.java Source code

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Here is the source code for com.xyz.util.PropertyFilter.java

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/**
 * Copyright (c) 2005-2009 springside.org.cn
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * 
 * $Id: PropertyFilter.java,v 1.1 2009/09/22 00:55:29 test Exp $
 */
package com.xyz.util;

import org.apache.commons.lang.StringUtils;

/**
 * ORM??.
 * 
 * PropertyFilter?????
 * 
 * TODO:?????.
 * 
 * @author calvin
 */
public class PropertyFilter {

    /**
     * OR.
     */
    private static final String OR_SEPARATOR = "_OR_";

    /**
     * .
     */
    public enum MatchType {
        EQ, LIKE, LT, GT, LE, GE;
    }

    private String[] propertyNames = null;
    private Object value;
    private MatchType matchType = MatchType.EQ;

    public PropertyFilter() {
    }

    /**
     * 
     * @param filterName EQ_S_NAME
     * @param value
     */
    public PropertyFilter(final String filterName, final Object value) {

        String matchTypeCode = StringUtils.substringBefore(filterName, "_");
        try {
            matchType = Enum.valueOf(MatchType.class, matchTypeCode.toUpperCase());
        } catch (RuntimeException e) {
            throw new IllegalArgumentException("filter??,.",
                    e);
        }

        String propertyNameStr = StringUtils.substringAfter(filterName, "_");
        propertyNames = StringUtils.split(propertyNameStr, PropertyFilter.OR_SEPARATOR);

        this.value = value;
    }

    /**
     * ?
     */
    public boolean isMultiProperty() {
        return (propertyNames.length > 1);
    }

    /**
     * ???.
     */
    public String getPropertyName() {
        if (propertyNames.length > 1)
            throw new IllegalArgumentException("There are not only one property");
        return propertyNames[0];
    }

    /**
     * ???.
     */
    public String[] getPropertyNames() {
        return propertyNames;
    }

    public Object getValue() {
        return value;
    }

    public MatchType getMatchType() {
        return matchType;
    }
}