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SDB is a persistence layer for use with Apache Jena that uses an SQL database to store triples/quads.

There is a newer version: 3.17.0

/*
 * 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.jena.sdb.store;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class TableDesc
{
    private String tableName ;
    private List columnNames = new ArrayList() ;
    
    public TableDesc(String tableName) { this(tableName, (String[])null) ; } 
    
    public TableDesc(String tableName, String... colNames)
    { 
        this.tableName = tableName ;
        if ( colNames != null )
            // Filter nulls.
            for ( String colName : colNames )
            {
                if ( colName != null )
                {
                    columnNames.add( colName );
                }
            }
    }

    public TableDesc(String tableName, List colNames)
    {
        this.tableName = tableName ;
        this.columnNames = colNames ;
    }
    
    public String getTableName()
    { return tableName ; }
    
    public boolean hasColumn(String colName)
    { return columnNames.contains(colName) ; }
   
    public List getColNames() { return columnNames ; }
    
    public int getWidth() { return columnNames.size() ; }
    
    public Iterator colNames()
    { return columnNames.iterator() ; } 
    
    @Override
    public String toString() { return tableName ; }
}