org.mybatis.dynamic.sql.insert.InsertDSL Maven / Gradle / Ivy

Go to download
/*
 *    Copyright ${license.git.copyrightYears} 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.insert;

import java.util.ArrayList;
import java.util.List;
import java.util.function.Supplier;

import org.jetbrains.annotations.NotNull;
import org.mybatis.dynamic.sql.SqlColumn;
import org.mybatis.dynamic.sql.SqlTable;
import org.mybatis.dynamic.sql.util.AbstractColumnMapping;
import org.mybatis.dynamic.sql.util.Buildable;
import org.mybatis.dynamic.sql.util.ConstantMapping;
import org.mybatis.dynamic.sql.util.NullMapping;
import org.mybatis.dynamic.sql.util.PropertyMapping;
import org.mybatis.dynamic.sql.util.PropertyWhenPresentMapping;
import org.mybatis.dynamic.sql.util.StringConstantMapping;

public class InsertDSL implements Buildable> {

    private final T row;
    private final SqlTable table;
    private final List columnMappings = new ArrayList<>();

    private InsertDSL(T row, SqlTable table) {
        this.row = row;
        this.table = table;
    }

    public  ColumnMappingFinisher map(SqlColumn column) {
        return new ColumnMappingFinisher<>(column);
    }

    @NotNull
    @Override
    public InsertModel build() {
        return InsertModel.withRow(row)
                .withTable(table)
                .withColumnMappings(columnMappings)
                .build();
    }

    public static  IntoGatherer insert(T row) {
        return new IntoGatherer<>(row);
    }

    public static class IntoGatherer {
        private final T row;

        private IntoGatherer(T row) {
            this.row = row;
        }

        public InsertDSL into(SqlTable table) {
            return new InsertDSL<>(row, table);
        }
    }

    public class ColumnMappingFinisher {
        private final SqlColumn column;

        public ColumnMappingFinisher(SqlColumn column) {
            this.column = column;
        }

        public InsertDSL toProperty(String property) {
            columnMappings.add(PropertyMapping.of(column, property));
            return InsertDSL.this;
        }

        public InsertDSL toPropertyWhenPresent(String property, Supplier valueSupplier) {
            columnMappings.add(PropertyWhenPresentMapping.of(column, property, valueSupplier));
            return InsertDSL.this;
        }

        public InsertDSL toNull() {
            columnMappings.add(NullMapping.of(column));
            return InsertDSL.this;
        }

        public InsertDSL toConstant(String constant) {
            columnMappings.add(ConstantMapping.of(column, constant));
            return InsertDSL.this;
        }

        public InsertDSL toStringConstant(String constant) {
            columnMappings.add(StringConstantMapping.of(column, constant));
            return InsertDSL.this;
        }
    }
}