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

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

/*
* 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.hbql.client.ExecutionResults;
import org.apache.hadoop.hbase.hbql.client.HBqlException;
import org.apache.hadoop.hbase.hbql.mapping.EnvVars;

public class SetStatement extends GenericStatement implements NonConnectionStatement {

    private final String variable, value;

    public SetStatement(final String variable, final String value) {
        super(null);
        this.variable = variable;
        this.value = value;
    }

    public String getVariable() {
        return variable;
    }

    public String getValue() {
        return value;
    }

    public ExecutionResults execute() throws HBqlException {

        final String var = this.getVariable();

        if (var == null)
            throw new HBqlException("Error in SET command");

        if (var.equalsIgnoreCase("packagepath")) {
            EnvVars.setPackagePath(this.getValue());
            return new ExecutionResults("PackagePath set to " + this.getValue());
        }

        throw new HBqlException("Unknown variable: " + var);
    }
}
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