Package org.apache.hadoop.hbase.hbql.statement

Source Code of org.apache.hadoop.hbase.hbql.statement.CreateTableStatement

/*
* Copyright (c) 2011.  The Apache Software Foundation
*
* 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.hadoop.hbase.hbql.statement;

import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.hbql.client.ExecutionResults;
import org.apache.hadoop.hbase.hbql.client.HBqlException;
import org.apache.hadoop.hbase.hbql.impl.HConnectionImpl;
import org.apache.hadoop.hbase.hbql.mapping.FamilyDefinition;

import java.util.List;

public class CreateTableStatement extends GenericStatement implements ConnectionStatement {

    private final String                 tableName;
    private final List<FamilyDefinition> familyList;

    public CreateTableStatement(final StatementPredicate predicate,
                                final String tableName,
                                final List<FamilyDefinition> familyList) {
        super(predicate);
        this.tableName = tableName;
        this.familyList = familyList;
    }

    protected ExecutionResults execute(final HConnectionImpl conn) throws HBqlException {

        final HTableDescriptor tableDesc = new HTableDescriptor(this.tableName);

        for (final FamilyDefinition familyDefintion : this.familyList)
            tableDesc.addFamily(familyDefintion.getColumnDescription());

        conn.createTable(tableDesc);

        return new ExecutionResults("Table " + tableDesc.getNameAsString() + " created.");
    }

    public static String usage() {
        return "CREATE TABLE table_name (family_definition_list) [IF bool_expr]";
    }
}
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