/*
* Copyright 1999-2012 Alibaba Group.
*
* Licensed 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.
*/
/**
* (created at 2011-1-23)
*/
package com.alibaba.cobar.parser.ast.expression.primary.function.datetime;
import java.util.List;
import com.alibaba.cobar.parser.ast.expression.Expression;
import com.alibaba.cobar.parser.ast.expression.primary.function.FunctionExpression;
import com.alibaba.cobar.parser.visitor.SQLASTVisitor;
/**
* @author <a href="mailto:shuo.qius@alibaba-inc.com">QIU Shuo</a>
*/
public class GetFormat extends FunctionExpression {
public static enum FormatType {
DATE,
TIME,
DATETIME
}
private FormatType formatType;
public GetFormat(FormatType type, Expression format) {
super("GET_FORMAT", wrapList(format));
this.formatType = type;
}
public FormatType getFormatType() {
return formatType;
}
public Expression getFormat() {
return arguments.get(0);
}
@Override
public FunctionExpression constructFunction(List<Expression> arguments) {
throw new UnsupportedOperationException("function of GetFormat has special arguments");
}
@Override
public void accept(SQLASTVisitor visitor) {
visitor.visit(this);
}
}