org.mybatis.dynamic.sql.SqlCriterion Maven / Gradle / Ivy

/**
 *    Copyright 2016-2018 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 java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import java.util.function.Function;
import java.util.stream.Stream;

public class SqlCriterion {
    
    private BindableColumn column;
    private VisitableCondition condition;
    private String connector;
    private List> subCriteria;
    
    private SqlCriterion(Builder builder) {
        connector = builder.connector;
        column = Objects.requireNonNull(builder.column);
        condition = Objects.requireNonNull(builder.condition);
        subCriteria = Objects.requireNonNull(builder.subCriteria);
    }
    
    public Optional connector() {
        return Optional.ofNullable(connector);
    }
    
    public BindableColumn column() {
        return column;
    }
    
    public VisitableCondition condition() {
        return condition;
    }
    
    public  Stream mapSubCriteria(Function, R> mapper) {
        return subCriteria.stream().map(mapper);
    }
    
    public static  Builder withColumn(BindableColumn column) {
        return new Builder().withColumn(column);
    }

    public static class Builder {
        private String connector;
        private BindableColumn column;
        private VisitableCondition condition;
        private List> subCriteria = new ArrayList<>();
        
        public Builder withConnector(String connector) {
            this.connector = connector;
            return this;
        }
        
        public Builder withColumn(BindableColumn column) {
            this.column = column;
            return this;
        }
        
        public Builder withCondition(VisitableCondition condition) {
            this.condition = condition;
            return this;
        }
        
        public Builder withSubCriteria(List> subCriteria) {
            this.subCriteria.addAll(subCriteria);
            return this;
        }
        
        public SqlCriterion build() {
            return new SqlCriterion<>(this);
        }
    }
}