BlobInputStreamTypeHandler.java
/*
* Copyright 2009-2023 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
*
* https://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.apache.ibatis.type;
import java.io.InputStream;
import java.sql.Blob;
import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
/**
* The {@link TypeHandler} for {@link Blob}/{@link InputStream} using method supported at JDBC 4.0.
*
* @since 3.4.0
*
* @author Kazuki Shimizu
*/
public class BlobInputStreamTypeHandler extends BaseTypeHandler<InputStream> {
/**
* Set an {@link InputStream} into {@link PreparedStatement}.
*
* @see PreparedStatement#setBlob(int, InputStream)
*/
@Override
public void setNonNullParameter(PreparedStatement ps, int i, InputStream parameter, JdbcType jdbcType)
throws SQLException {
ps.setBlob(i, parameter);
}
/**
* Get an {@link InputStream} that corresponds to a specified column name from {@link ResultSet}.
*
* @see ResultSet#getBlob(String)
*/
@Override
public InputStream getNullableResult(ResultSet rs, String columnName) throws SQLException {
return toInputStream(rs.getBlob(columnName));
}
/**
* Get an {@link InputStream} that corresponds to a specified column index from {@link ResultSet}.
*
* @see ResultSet#getBlob(int)
*/
@Override
public InputStream getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
return toInputStream(rs.getBlob(columnIndex));
}
/**
* Get an {@link InputStream} that corresponds to a specified column index from {@link CallableStatement}.
*
* @see CallableStatement#getBlob(int)
*/
@Override
public InputStream getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
return toInputStream(cs.getBlob(columnIndex));
}
private InputStream toInputStream(Blob blob) throws SQLException {
if (blob == null) {
return null;
}
return blob.getBinaryStream();
}
}