TableStreamBuildFactory.java

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// 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
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package org.apache.doris.catalog.stream;

import org.apache.doris.catalog.TableIf;
import org.apache.doris.common.DdlException;

import com.google.common.base.Preconditions;

public class TableStreamBuildFactory {
    public static class BuildParams {
        String tableStreamName;
        TableIf baseTable;
    }

    private BuildParams params;

    public TableStreamBuildFactory() {
        params = new BuildParams();
    }

    public TableStreamBuildFactory withBaseTable(TableIf baseTable) {
        params.baseTable = baseTable;
        return this;
    }

    public TableStreamBuildFactory withName(String name) {
        params.tableStreamName = name;
        return this;
    }

    public BaseTableStream build() throws DdlException {
        Preconditions.checkNotNull(params, "The factory isn't initialized.");
        Preconditions.checkNotNull(params.tableStreamName, "Stream name isn't initialized.");
        Preconditions.checkNotNull(params.baseTable, "Stream base table isn't initialized.");
        switch (params.baseTable.getType()) {
            case OLAP:
                return new OlapTableStream(params.tableStreamName, params.baseTable);
            default:
                throw new DdlException("unsupported stream base table type: " + params.baseTable.getType());
        }
    }
}