org.apache.ibatis.reflection.wrapper.MapWrapper.java Source code

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Here is the source code for org.apache.ibatis.reflection.wrapper.MapWrapper.java

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/*
 *    Copyright 2009-2012 the original author or authors.
 *
 *    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 org.apache.ibatis.reflection.wrapper;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.lang3.StringUtils;
import org.apache.ibatis.reflection.MetaObject;
import org.apache.ibatis.reflection.SystemMetaObject;
import org.apache.ibatis.reflection.factory.ObjectFactory;
import org.apache.ibatis.reflection.property.PropertyTokenizer;

public class MapWrapper extends BaseWrapper {

    private Map<String, Object> map;

    public MapWrapper(MetaObject metaObject, Map<String, Object> map) {
        super(metaObject);
        this.map = map;
    }

    public Object get(PropertyTokenizer prop) {
        if (prop.getIndex() != null) {
            Object collection = resolveCollection(prop, map);
            return getCollectionValue(prop, collection);
        } else {
            return map.get(prop.getName());
        }
    }

    public void set(PropertyTokenizer prop, Object value) {
        if (prop.getIndex() != null) {
            Object collection = resolveCollection(prop, map);
            setCollectionValue(prop, collection, value);
        } else {
            // map.put(prop.getName(), value);

            // "shop_name" -> "shopName"
            map.put(changDBColumnToPropertyName(prop.getName()), value);
        }
    }

    /**
      * ??Camel???
      * 
      * input: shop_name
      * output:shopName
      * @param column
      * @return
      */
    private String changDBColumnToPropertyName(String column) {
        if (StringUtils.isBlank(column) || column.equals("_parameter")//???
                || column.startsWith("__frch")//foreach
                || column.indexOf("_") == -1) {//??
            return column;
        }

        String[] words = column.toLowerCase().split("_");//???
        StringBuilder builder = new StringBuilder(words[0]);
        for (int i = 1; i < words.length; i++) {
            builder.append(StringUtils.capitalize(words[i]));
        }

        return builder.toString();
    }

    public String findProperty(String name, boolean useCamelCaseMapping) {
        return name;
    }

    public String[] getGetterNames() {
        return map.keySet().toArray(new String[map.keySet().size()]);
    }

    public String[] getSetterNames() {
        return map.keySet().toArray(new String[map.keySet().size()]);
    }

    public Class<?> getSetterType(String name) {
        PropertyTokenizer prop = new PropertyTokenizer(name);
        if (prop.hasNext()) {
            MetaObject metaValue = metaObject.metaObjectForProperty(prop.getIndexedName());
            if (metaValue == SystemMetaObject.NULL_META_OBJECT) {
                return Object.class;
            } else {
                return metaValue.getSetterType(prop.getChildren());
            }
        } else {
            if (map.get(name) != null) {
                return map.get(name).getClass();
            } else {
                return Object.class;
            }
        }
    }

    public Class<?> getGetterType(String name) {
        PropertyTokenizer prop = new PropertyTokenizer(name);
        if (prop.hasNext()) {
            MetaObject metaValue = metaObject.metaObjectForProperty(prop.getIndexedName());
            if (metaValue == SystemMetaObject.NULL_META_OBJECT) {
                return Object.class;
            } else {
                return metaValue.getGetterType(prop.getChildren());
            }
        } else {
            if (map.get(name) != null) {
                return map.get(name).getClass();
            } else {
                return Object.class;
            }
        }
    }

    public boolean hasSetter(String name) {
        return true;
    }

    public boolean hasGetter(String name) {
        PropertyTokenizer prop = new PropertyTokenizer(name);
        if (prop.hasNext()) {
            if (map.containsKey(prop.getIndexedName())) {
                MetaObject metaValue = metaObject.metaObjectForProperty(prop.getIndexedName());
                if (metaValue == SystemMetaObject.NULL_META_OBJECT) {
                    return true;
                } else {
                    return metaValue.hasGetter(prop.getChildren());
                }
            } else {
                return false;
            }
        } else {
            return map.containsKey(prop.getName());
        }
    }

    public MetaObject instantiatePropertyValue(String name, PropertyTokenizer prop, ObjectFactory objectFactory) {
        HashMap<String, Object> map = new HashMap<String, Object>();
        set(prop, map);
        return MetaObject.forObject(map, metaObject.getObjectFactory(), metaObject.getObjectWrapperFactory());
    }

    public boolean isCollection() {
        return false;
    }

    public void add(Object element) {
        throw new UnsupportedOperationException();
    }

    public <E> void addAll(List<E> element) {
        throw new UnsupportedOperationException();
    }

}