sf.database.meta.MetaHolderExtend Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of sorm Show documentation

java jpa tool for spring

The newest version!

package sf.database.meta;

import sf.tools.StringUtils;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

public class MetaHolderExtend {
    // 动态表元数据池
    protected static final Map dynPool = new ConcurrentHashMap<>(8);
    // 反向查找表
    protected static final Map inverseMapping = new ConcurrentHashMap<>();

    /**
     * 逆向查找元模型
     * @param schema
     * @param table
     */
    public static TableMapping lookup(String schema, String table) {
        String key = (schema + "." + table).toUpperCase();
        TableMapping m = inverseMapping.get(key);
        if (m != null)
            return m;

        // Lookup static models
        for (TableMapping meta : MetaHolder.pool.values()) {
            String tablename = meta.getTableName();
            if (schema != null && (!StringUtils.equals(meta.getSchema(), schema))) {// schema不同则跳
                continue;
            }
            if (tablename.equalsIgnoreCase(table)) {
                m = meta;
                break;
            }
        }
        if (m == null) {
            // Lookup dynamic models
            for (TableMapping meta : dynPool.values()) {
                String tablename = meta.getTableName();
                if (schema != null && (!StringUtils.equals(meta.getSchema(), schema))) {// schema不同则跳过
                    continue;
                }
                if (tablename.equalsIgnoreCase(table)) {
                    m = meta;
                    break;
                }
            }
        }
        inverseMapping.put(key, m);
        return m;
    }

    public static void clear() {
        dynPool.clear();
        inverseMapping.clear();
    }
}