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An JDBC datasource implementation.

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/*
 * Copyright 1999-2018 Alibaba Group Holding Ltd.
 *
 * 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 com.alibaba.druid.mock;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.sql.Blob;
import java.sql.SQLException;

public class MockBlob implements Blob {
    private final ByteArrayOutputStream out = new ByteArrayOutputStream();

    @Override
    public long length() throws SQLException {
        return out.size();
    }

    @Override
    public byte[] getBytes(long pos, int length) throws SQLException {
        byte[] bytes = new byte[length];
        byte[] outBytes = out.toByteArray();
        System.arraycopy(outBytes, (int) (pos - 1), bytes, 0, length);
        return bytes;
    }

    @Override
    public InputStream getBinaryStream() throws SQLException {
        return new ByteArrayInputStream(out.toByteArray());
    }

    @Override
    public long position(byte[] pattern, long start) throws SQLException {
        return 0;
    }

    @Override
    public long position(Blob pattern, long start) throws SQLException {
        return 0;
    }

    @Override
    public int setBytes(long pos, byte[] bytes) throws SQLException {
        return 0;
    }

    @Override
    public int setBytes(long pos, byte[] bytes, int offset, int len) throws SQLException {
        return 0;
    }

    @Override
    public OutputStream setBinaryStream(long pos) throws SQLException {
        return null;
    }

    @Override
    public void truncate(long len) throws SQLException {
    }

    @Override
    public void free() throws SQLException {
    }

    @Override
    public InputStream getBinaryStream(long pos, long length) throws SQLException {
        return null;
    }

}