CsvCreateTableBuilder.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.metamodel.csv;

import org.apache.metamodel.create.AbstractTableCreationBuilder;
import org.apache.metamodel.schema.MutableTable;
import org.apache.metamodel.schema.Schema;
import org.apache.metamodel.schema.Table;

final class CsvCreateTableBuilder extends AbstractTableCreationBuilder<CsvUpdateCallback> {

    public CsvCreateTableBuilder(CsvUpdateCallback updateCallback, Schema schema, String name) {
        super(updateCallback, schema, name);
        if (!(schema instanceof CsvSchema)) {
            throw new IllegalArgumentException("Not a valid CSV schema: " + schema);
        }
    }

    @Override
    public Table execute() {
        CsvUpdateCallback csvUpdateCallback = getUpdateCallback();

        MutableTable table = getTable();
        String[] columnNames = table.getColumnNames();

        CsvDataContext csvDataContext = (CsvDataContext) csvUpdateCallback.getDataContext();

        if (csvDataContext.getConfiguration().getColumnNameLineNumber() != CsvConfiguration.NO_COLUMN_NAME_LINE) {
            csvUpdateCallback.writeRow(columnNames, false);
        }

        CsvSchema schema = (CsvSchema) table.getSchema();
        CsvTable csvTable = new CsvTable(schema, table.getName(), table.getColumnNames());
        schema.setTable(csvTable);
        return csvTable;
    }
}