/*
* 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.args;
import org.apache.expreval.expr.ExpressionProperty;
import org.apache.expreval.expr.node.GenericValue;
import org.apache.hadoop.hbase.hbql.client.HBqlException;
import java.io.Serializable;
public class ColumnWidth extends ExpressionProperty implements Serializable {
private final boolean widthSpecified;
private int width = -1;
public ColumnWidth() {
this(null);
}
public ColumnWidth(final GenericValue val) {
super(SelectStatementArgs.ArgType.WIDTH, val);
this.widthSpecified = val != null;
}
public boolean isWidthSpecified() {
return this.widthSpecified;
}
public int getWidth() {
return this.width;
}
public String asString() {
return (this.isWidthSpecified() ? "WIDTH " + this.getGenericValue(0).asString() : "");
}
public void validate() throws HBqlException {
if (this.isWidthSpecified()) {
this.width = ((Number)this.evaluateConstant(0, false)).intValue();
if (this.getWidth() <= 0)
throw new HBqlException("Invalid column width: " + this.getWidth());
}
}
}