com.blazebit.persistence.impl.ImplicitGroupByClauseDependencyRegistrationVisitor Maven / Gradle / Ivy
/*
* Copyright 2014 - 2020 Blazebit.
*
* 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.blazebit.persistence.impl;
import com.blazebit.persistence.parser.expression.PathExpression;
import com.blazebit.persistence.parser.expression.VisitorAdapter;
/**
*
* @author Christian Beikov
* @since 1.3.0
*/
class ImplicitGroupByClauseDependencyRegistrationVisitor extends VisitorAdapter {
private final AliasManager aliasManager;
public ImplicitGroupByClauseDependencyRegistrationVisitor(AliasManager aliasManager) {
this.aliasManager = aliasManager;
}
@Override
public void visit(PathExpression expr) {
JoinNode node = (JoinNode) expr.getBaseNode();
if (node == null) {
// This can only be a select alias
((SelectInfo) aliasManager.getAliasInfo(expr.toString())).getExpression().accept(this);
} else {
node.updateClauseDependencies(ClauseType.GROUP_BY, null);
}
}
}