/*
* 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.cast;
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 Cast extends FunctionExpression {
private final String typeName;
private final Expression typeInfo1;
private final Expression typeInfo2;
/**
* @param expr never null
*/
public Cast(Expression expr, String typeName, Expression typeInfo1, Expression typeInfo2) {
super("CAST", wrapList(expr));
if (null == typeName) {
throw new IllegalArgumentException("typeName is null");
}
this.typeName = typeName;
this.typeInfo1 = typeInfo1;
this.typeInfo2 = typeInfo2;
}
/**
* @return never null
*/
public Expression getExpr() {
return getArguments().get(0);
}
/**
* @return never null
*/
public String getTypeName() {
return typeName;
}
public Expression getTypeInfo1() {
return typeInfo1;
}
public Expression getTypeInfo2() {
return typeInfo2;
}
@Override
public FunctionExpression constructFunction(List<Expression> arguments) {
throw new UnsupportedOperationException("function of char has special arguments");
}
@Override
public void accept(SQLASTVisitor visitor) {
visitor.visit(this);
}
}