modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/H2TableEngine.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.ignite.internal.processors.query.h2;

import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import org.apache.ignite.internal.cache.query.index.IndexProcessor;
import org.apache.ignite.internal.processors.query.h2.opt.GridH2RowDescriptor;
import org.apache.ignite.internal.processors.query.h2.opt.GridH2Table;
import org.h2.api.TableEngine;
import org.h2.command.ddl.CreateTableData;
import org.h2.table.TableBase;

/**
 * H2 Table engine.
 */
@SuppressWarnings("FieldAccessedSynchronizedAndUnsynchronized")
public class H2TableEngine implements TableEngine {
    /** */
    private static GridH2RowDescriptor rowDesc0;

    /** */
    private static H2TableDescriptor tblDesc0;

    /** */
    private static GridH2Table resTbl0;

    /** */
    private static IndexProcessor idxMgr0;

    /**
     * Creates table using given connection, DDL clause for given type descriptor and list of indexes.
     *
     * @param conn Connection.
     * @param sql DDL clause.
     * @param rowDesc Row descriptor.
     * @param tblDesc Table descriptor.
     * @throws SQLException If failed.
     * @return Created table.
     */
    public static synchronized GridH2Table createTable(
        Connection conn,
        String sql,
        GridH2RowDescriptor rowDesc,
        H2TableDescriptor tblDesc,
        IndexProcessor idxMgr
    )
        throws SQLException {
        rowDesc0 = rowDesc;
        tblDesc0 = tblDesc;

        try {
            try (Statement s = conn.createStatement()) {
                s.execute(sql + " engine \"" + H2TableEngine.class.getName() + "\"");
            }

            tblDesc.table(resTbl0);

            return resTbl0;
        }
        finally {
            resTbl0 = null;
            tblDesc0 = null;
            rowDesc0 = null;
        }
    }

    /** {@inheritDoc} */
    @Override public TableBase createTable(CreateTableData createTblData) {
        resTbl0 = new GridH2Table(createTblData, rowDesc0, tblDesc0, tblDesc0.cacheInfo());

        return resTbl0;
    }
}