/*
 *    Copyright 2016-2020 the original author or authors.
 *
 *    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 org.mybatis.dynamic.sql;

import org.mybatis.dynamic.sql.render.TableAliasCalculator;

public abstract class AbstractColumnComparisonCondition<T> implements VisitableCondition<T> {

    protected final BasicColumn column;

    protected AbstractColumnComparisonCondition(BasicColumn column) {
        this.column = column;
    }

    @Override
    public <R> R accept(ConditionVisitor<T,R> visitor) {
        return visitor.visit(this);
    }

    public String renderCondition(String columnName, TableAliasCalculator tableAliasCalculator) {
        return renderCondition(columnName, column.renderWithTableAlias(tableAliasCalculator));
    }

    protected abstract String renderCondition(String leftColumn, String rightColumn);
}

/*
 *    Copyright 2016-2020 the original author or authors.
 *
 *    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 org.mybatis.dynamic.sql;

import org.mybatis.dynamic.sql.render.TableAliasCalculator;

public abstract class AbstractColumnComparisonCondition<T> implements VisitableCondition<T> {

    protected final BasicColumn column;

    protected AbstractColumnComparisonCondition(BasicColumn column) {
        this.column = column;
    }

    @Override
    public <R> R accept(ConditionVisitor<T, R> visitor) {
        return visitor.visit(this);
    }

    public String renderCondition(String columnName, TableAliasCalculator tableAliasCalculator) {
        return renderCondition(columnName, column.renderWithTableAlias(tableAliasCalculator));
    }

    protected abstract String renderCondition(String leftColumn, String rightColumn);
}

Update AbstractColumnComparisonCondition.java