/*
* Copyright 1999-2011 Alibaba Group Holding Ltd.
*
* 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.
*/
package com.alibaba.druid.sql.dialect.mysql.ast.expr;
import com.alibaba.druid.sql.ast.SQLExpr;
import com.alibaba.druid.sql.ast.SQLExprImpl;
import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlASTVisitor;
import com.alibaba.druid.sql.visitor.SQLASTVisitor;
public class MySqlIntervalExpr extends SQLExprImpl implements MySqlExpr {
private SQLExpr value;
private MySqlIntervalUnit unit;
public MySqlIntervalExpr(){
}
public SQLExpr getValue() {
return value;
}
public void setValue(SQLExpr value) {
this.value = value;
}
public MySqlIntervalUnit getUnit() {
return unit;
}
public void setUnit(MySqlIntervalUnit unit) {
this.unit = unit;
}
@Override
public void output(StringBuffer buf) {
value.output(buf);
buf.append(' ');
buf.append(unit.name());
}
protected void accept0(SQLASTVisitor visitor) {
MySqlASTVisitor mysqlVisitor = (MySqlASTVisitor) visitor;
if (mysqlVisitor.visit(this)) {
acceptChild(visitor, this.value);
}
mysqlVisitor.endVisit(this);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((unit == null) ? 0 : unit.hashCode());
result = prime * result + ((value == null) ? 0 : value.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
MySqlIntervalExpr other = (MySqlIntervalExpr) obj;
if (unit != other.unit) {
return false;
}
if (value == null) {
if (other.value != null) {
return false;
}
} else if (!value.equals(other.value)) {
return false;
}
return true;
}
}