com.cyclopsgroup.waterview.MapAttributes.java Source code

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Here is the source code for com.cyclopsgroup.waterview.MapAttributes.java

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/* ==========================================================================
 * Copyright 2002-2004 Cyclops Group Community
 * 
 * Licensed under the Open Software License, Version 2.1 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://opensource.org/licenses/osl-2.1.php
 *
 *  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.cyclopsgroup.waterview;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.Map;

import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang.ArrayUtils;

import com.cyclopsgroup.waterview.utils.TypeUtils;

/**
 * @author <a href="mailto:jiaqi.guo@gmail.com">Jiaqi Guo</a>
 *
 * Map based value parser
 */
public class MapAttributes extends Attributes {
    private Map map;

    /**
     * Constructor for class MapValueParser
     *
     * @param map Given map content
     */
    public MapAttributes(Map map) {
        this.map = map;
    }

    /**
     * Overwrite or implement method in MapValueParser
     *
     * @see com.cyclopsgroup.waterview.Attributes#add(java.lang.String, java.lang.String)
     */
    public void add(String name, String value) {
        getMap().put(name, value);
    }

    /**
     * Overwrite or implement method in MapValueParser
     *
     * @see com.cyclopsgroup.waterview.Attributes#doGetValue(java.lang.String)
     */
    protected String doGetValue(String name) throws Exception {
        Object object = getMap().get(name);
        if (object == null) {
            return null;
        }
        if (!TypeUtils.isIteratable(object)) {
            return TypeUtils.toString(object);
        }
        Iterator it = TypeUtils.iterate(object);
        if (it.hasNext()) {
            return TypeUtils.toString(it.next());
        }
        return null;
    }

    /**
     * Overwrite or implement method in MapValueParser
     *
     * @see com.cyclopsgroup.waterview.Attributes#doGetValues(java.lang.String)
     */
    protected String[] doGetValues(String name) throws Exception {
        Object object = getMap().get(name);
        if (object == null) {
            return ArrayUtils.EMPTY_STRING_ARRAY;
        }
        ArrayList values = new ArrayList();
        CollectionUtils.addAll(values, TypeUtils.iterate(object));
        String[] ret = new String[values.size()];
        for (int i = 0; i < ret.length; i++) {
            Object value = values.get(i);
            ret[i] = TypeUtils.toString(value);
        }
        return ret;
    }

    /**
     * Get map object
     *
     * @return Map object
     */
    public Map getMap() {
        return map;
    }

    /**
     * Overwrite or implement method in MapValueParser
     *
     * @see com.cyclopsgroup.waterview.Attributes#remove(java.lang.String)
     */
    public void remove(String name) {
        getMap().remove(name);
    }

    /**
     * Override method doGetAttributeNames in class MapValueParser
     *
     * @see com.cyclopsgroup.waterview.Attributes#doGetAttributeNames()
     */
    protected String[] doGetAttributeNames() {
        return (String[]) getMap().keySet().toArray(ArrayUtils.EMPTY_STRING_ARRAY);
    }
}