/*
* 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 2011-5-21)
*/
package com.alibaba.cobar.parser.ast.stmt.dal;
import com.alibaba.cobar.parser.ast.expression.Expression;
import com.alibaba.cobar.parser.ast.fragment.VariableScope;
import com.alibaba.cobar.parser.visitor.SQLASTVisitor;
/**
* @author <a href="mailto:shuo.qius@alibaba-inc.com">QIU Shuo</a>
*/
public class ShowVariables extends DALShowStatement {
private final VariableScope scope;
private final String pattern;
private final Expression where;
public ShowVariables(VariableScope scope, String pattern) {
this.scope = scope;
this.pattern = pattern;
this.where = null;
}
public ShowVariables(VariableScope scope, Expression where) {
this.scope = scope;
this.pattern = null;
this.where = where;
}
public ShowVariables(VariableScope scope) {
this.scope = scope;
this.pattern = null;
this.where = null;
}
public VariableScope getScope() {
return scope;
}
public String getPattern() {
return pattern;
}
public Expression getWhere() {
return where;
}
@Override
public void accept(SQLASTVisitor visitor) {
visitor.visit(this);
}
}