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/*
* Copyright 1999-2017 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.ast.statement;
import com.alibaba.druid.sql.ast.*;
import com.alibaba.druid.sql.ast.expr.SQLIdentifierExpr;
import com.alibaba.druid.sql.ast.expr.SQLPropertyExpr;
import com.alibaba.druid.sql.visitor.SQLASTVisitor;
import java.util.ArrayList;
import java.util.List;
public class SQLShowColumnsStatement extends SQLStatementImpl implements SQLShowStatement, SQLReplaceable {
private boolean full;
private SQLName table;
private SQLName database;
private SQLExpr like;
private SQLExpr where;
public boolean isFull() {
return full;
}
public void setFull(boolean full) {
this.full = full;
}
public SQLName getTable() {
return table;
}
public void setTable(SQLName table) {
if (table instanceof SQLPropertyExpr) {
SQLPropertyExpr propExpr = (SQLPropertyExpr) table;
this.setDatabase((SQLName) propExpr.getOwner());
this.table = new SQLIdentifierExpr(propExpr.getName());
return;
}
this.table = table;
}
public SQLName getDatabase() {
return database;
}
public void setDatabase(SQLName database) {
this.database = database;
}
public SQLExpr getLike() {
return like;
}
public void setLike(SQLExpr like) {
this.like = like;
}
public SQLExpr getWhere() {
return where;
}
public void setWhere(SQLExpr where) {
this.where = where;
}
public void accept0(SQLASTVisitor visitor) {
if (visitor.visit(this)) {
acceptChild(visitor, table);
acceptChild(visitor, database);
acceptChild(visitor, like);
acceptChild(visitor, where);
}
visitor.endVisit(this);
}
public List getChildren() {
List children = new ArrayList();
if (table != null) {
children.add(table);
}
if (database != null) {
children.add(database);
}
if (like != null) {
children.add(like);
}
if (where != null) {
children.add(where);
}
return children;
}
@Override
public boolean replace(SQLExpr expr, SQLExpr target) {
if (table == expr) {
setTable((SQLName) target);
return true;
}
if (database == expr) {
setDatabase((SQLName) target);
return true;
}
if (like == expr) {
setLike(target);
return true;
}
if (where == expr) {
setWhere(target);
return true;
}
return false;
}
}