/*
* 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 2011-2-9)
*/
package com.alibaba.cobar.parser.ast.fragment.tableref;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import com.alibaba.cobar.parser.ast.expression.primary.Identifier;
import com.alibaba.cobar.parser.visitor.SQLASTVisitor;
/**
* @author <a href="mailto:shuo.qius@alibaba-inc.com">QIU Shuo</a>
*/
public class TableRefFactor extends AliasableTableReference {
/** e.g. <code>"`db2`.`tb1`"</code> is possible */
private final Identifier table;
private final List<IndexHint> hintList;
public TableRefFactor(Identifier table, String alias, List<IndexHint> hintList) {
super(alias);
this.table = table;
if (hintList == null || hintList.isEmpty()) {
this.hintList = Collections.emptyList();
} else if (hintList instanceof ArrayList) {
this.hintList = hintList;
} else {
this.hintList = new ArrayList<IndexHint>(hintList);
}
}
public TableRefFactor(Identifier table, List<IndexHint> hintList) {
this(table, null, hintList);
}
public Identifier getTable() {
return table;
}
public List<IndexHint> getHintList() {
return hintList;
}
@Override
public Object removeLastConditionElement() {
return null;
}
@Override
public boolean isSingleTable() {
return true;
}
@Override
public int getPrecedence() {
return TableReference.PRECEDENCE_FACTOR;
}
@Override
public void accept(SQLASTVisitor visitor) {
visitor.visit(this);
}
}