/*
* 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.jdbi.v3.core.mapper;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.jdbi.v3.core.statement.StatementContext;
Adapts a ColumnMapper
into a RowMapper
by mapping a single column. /**
* Adapts a {@link ColumnMapper} into a {@link RowMapper} by mapping a single column.
*/
public class SingleColumnMapper<T> implements RowMapper<T> {
private final RowMapper<T> delegate;
Constructs a row mapper which maps the first column.
Params: - mapper – the column mapper to delegate to for mapping.
/**
* Constructs a row mapper which maps the first column.
* @param mapper the column mapper to delegate to for mapping.
*/
public SingleColumnMapper(ColumnMapper<T> mapper) {
this(mapper, 1);
}
Constructs a row mapper which maps the given column number.
Params: - mapper – the column mapper to delegate to for mapping
- columnNumber – the column number (1-based) to map
/**
* Constructs a row mapper which maps the given column number.
* @param mapper the column mapper to delegate to for mapping
* @param columnNumber the column number (1-based) to map
*/
public SingleColumnMapper(ColumnMapper<T> mapper, int columnNumber) {
this.delegate = (r, ctx) -> mapper.map(r, columnNumber, ctx);
}
Constructs a row mapper which maps the column with the given label.
Params: - mapper – the column mapper to delegate to for mapping
- columnLabel – the label of the column to map
/**
* Constructs a row mapper which maps the column with the given label.
* @param mapper the column mapper to delegate to for mapping
* @param columnLabel the label of the column to map
*/
public SingleColumnMapper(ColumnMapper<T> mapper, String columnLabel) {
this.delegate = (r, ctx) -> mapper.map(r, columnLabel, ctx);
}
@Override
public T map(ResultSet r, StatementContext ctx) throws SQLException {
return delegate.map(r, ctx);
}
}