de.flapdoodle.mongoom.mapping.index.IndexParser.java Source code

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Here is the source code for de.flapdoodle.mongoom.mapping.index.IndexParser.java

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/**
 * Copyright (C) 2010 Michael Mosmann <michael@mosmann.de>
 *
 * 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 de.flapdoodle.mongoom.mapping.index;

import java.util.Map;

import com.google.common.collect.Maps;

import de.flapdoodle.mongoom.annotations.index.IndexGroup;
import de.flapdoodle.mongoom.annotations.index.IndexGroups;
import de.flapdoodle.mongoom.annotations.index.IndexOption;

public class IndexParser {

    private static IndexGroup[] getIndexGroups(Class<?> entityClass) {
        IndexGroup[] list = {};
        IndexGroups indexGroups = entityClass.getAnnotation(IndexGroups.class);
        if (indexGroups != null) {
            list = indexGroups.value();
        } else {
            IndexGroup indexGroup = entityClass.getAnnotation(IndexGroup.class);
            if (indexGroup != null) {
                list = new IndexGroup[] { indexGroup };
            }
        }
        return list;
    }

    public static Map<String, EntityIndexDef> getIndexGroupMap(Class<?> entityClass) {
        Map<String, EntityIndexDef> map = Maps.newHashMap();
        IndexGroup[] indexGroups = getIndexGroups(entityClass);
        for (IndexGroup ig : indexGroups) {
            IndexOption options = ig.options();
            String name = ig.name();
            if (name.length() == 0)
                name = null;
            map.put(ig.group(), new EntityIndexDef(name, options.unique(), options.dropDups(), options.sparse()));
        }
        return map;
    }

}