net.ymate.platform.module.search.support.IndexedMeta.java Source code

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Here is the source code for net.ymate.platform.module.search.support.IndexedMeta.java

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/*
 * Copyright 2007-2107 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 net.ymate.platform.module.search.support;

import java.lang.reflect.Field;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

import net.ymate.platform.base.YMP;
import net.ymate.platform.commons.i18n.I18N;
import net.ymate.platform.commons.util.ClassUtils;
import net.ymate.platform.module.search.ISearchable;
import net.ymate.platform.module.search.annotation.IndexField;
import net.ymate.platform.module.search.annotation.Indexed;

import org.apache.commons.lang.StringUtils;

/**
 * <p>
 * IndexedMeta
 * </p>
 * <p>
 * ???
 * </p>
 * 
 * @author (suninformation@163.com)
 * @version 0.0.0
 *          <table style="border:1px solid gray;">
 *          <tr>
 *          <th width="100px">?</th><th width="100px"></th><th
 *          width="100px"></th><th width="100px"></th>
 *          </tr>
 *          <!--  Table ?? -->
 *          <tr>
 *          <td>0.0.0</td>
 *          <td></td>
 *          <td></td>
 *          <td>201436?1:18:20</td>
 *          </tr>
 *          </table>
 */
public class IndexedMeta {

    public static final String FIELD_ID = "id";

    public static final String TARGET_CLASS_NAME = "__class";

    private String __indexName;

    /**
     * ??
     */
    private Map<String, IndexField> __indexFieldMap = new HashMap<String, IndexField>();

    /**
     * 
     * 
     * @param searchableClass
     */
    public IndexedMeta(Class<? extends ISearchable> searchableClass) {
        if (!ClassUtils.isInterfaceOf(searchableClass, ISearchable.class)) {
            throw new RuntimeException(I18N.formatMessage(YMP.__LSTRING_FILE, null, null,
                    "ymp.search.searchable_class_need_impl", searchableClass.getName()));
        }
        Indexed _idx = searchableClass.getAnnotation(Indexed.class);
        if (null != _idx) {
            __indexName = StringUtils.defaultIfEmpty(_idx.name(), searchableClass.getSimpleName());
            this.__init(searchableClass);
        } else {
            throw new RuntimeException(I18N.formatMessage(YMP.__LSTRING_FILE, null, null,
                    "ymp.search.searchable_class_need_anno_indexed", searchableClass.getName()));
        }
    }

    /**
     * ?
     * 
     * @param searchableClass
     */
    private void __init(Class<?> searchableClass) {
        // @IndexField
        for (Field _f : ClassUtils.getFields(searchableClass, true)) {
            IndexField _idxField = _f.getAnnotation(IndexField.class);
            if (_idxField != null) {
                __indexFieldMap.put(_f.getName(), _idxField);
            }
        }
    }

    public boolean isEmpty() {
        return __indexFieldMap.isEmpty();
    }

    /**
     * @return ??
     */
    public String getIndexName() {
        return __indexName;
    }

    /**
     * @return ???
     */
    public Set<String> getFieldNames() {
        return Collections.unmodifiableSet(__indexFieldMap.keySet());
    }

    /**
     * @param fieldName ??
     * @return ?
     */
    public IndexField getIndexField(String fieldName) {
        return __indexFieldMap.get(fieldName);
    }

}