PostgreDataTypeCache.java

/*
 * DBeaver - Universal Database Manager
 * Copyright (C) 2010-2017 Serge Rider (serge@jkiss.org)
 *
 * 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.jkiss.dbeaver.ext.postgresql.model;

import org.jkiss.code.NotNull;
import org.jkiss.dbeaver.DBException;
import org.jkiss.dbeaver.Log;
import org.jkiss.dbeaver.model.exec.jdbc.JDBCPreparedStatement;
import org.jkiss.dbeaver.model.exec.jdbc.JDBCResultSet;
import org.jkiss.dbeaver.model.exec.jdbc.JDBCSession;
import org.jkiss.dbeaver.model.exec.jdbc.JDBCStatement;
import org.jkiss.dbeaver.model.impl.jdbc.cache.JDBCObjectCache;
import org.jkiss.utils.LongKeyMap;

import java.sql.SQLException;
import java.util.List;

/**
 * PostgreDataTypeCache
 */
public class PostgreDataTypeCache extends JDBCObjectCache<PostgreSchema, PostgreDataType>
{
    private LongKeyMap<PostgreDataType> dataTypeMap = new LongKeyMap<>();

    @Override
    public void clearCache() {
        super.clearCache();
        dataTypeMap.clear();
    }

    @Override
    public void removeObject(@NotNull PostgreDataType object, boolean resetFullCache) {
        super.removeObject(object, resetFullCache);
        dataTypeMap.remove(object.getObjectId());
    }

    @Override
    public void cacheObject(@NotNull PostgreDataType object) {
        if (getCachedObject(object.getName()) != null) {

        } else {
            super.cacheObject(object);
            if (!object.isAlias()) {
                dataTypeMap.put(object.getObjectId(), object);
            }
        }
    }

    @Override
    public void setCache(List<PostgreDataType> postgreDataTypes) {
        super.setCache(postgreDataTypes);
        for (PostgreDataType dt : postgreDataTypes) {
            if (!dt.isAlias()) {
                dataTypeMap.put(dt.getObjectId(), dt);
            }
        }
    }

    @Override
    protected JDBCStatement prepareObjectsStatement(@NotNull JDBCSession session, @NotNull PostgreSchema owner) throws SQLException
    {
        final JDBCPreparedStatement dbStat = session.prepareStatement(
            "SELECT t.oid,t.* \n" +
                "FROM pg_catalog.pg_type t WHERE typnamespace=?\n" +
                "ORDER by t.oid");
        dbStat.setLong(1, owner.getObjectId());
        return dbStat;
    }

    @Override
    protected PostgreDataType fetchObject(@NotNull JDBCSession session, @NotNull PostgreSchema owner, @NotNull JDBCResultSet dbResult) throws SQLException, DBException
    {
        return PostgreDataType.readDataType(session, owner, dbResult);
    }

    public PostgreDataType getDataType(long oid) {
        return dataTypeMap.get(oid);
    }

}