/*
* DBeaver - Universal Database Manager
* Copyright (C) 2010-2017 Serge Rider (serge@jkiss.org)
*
* 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.jkiss.dbeaver.model.impl;
import org.jkiss.dbeaver.model.app.DBPPlatform;
import org.jkiss.dbeaver.model.data.DBDContentStorage;
import org.jkiss.dbeaver.model.data.DBDContentStorageLocal;
import org.jkiss.dbeaver.model.runtime.DBRProgressMonitor;
import org.jkiss.dbeaver.utils.ContentUtils;
import org.jkiss.dbeaver.utils.GeneralUtils;
import org.jkiss.utils.CommonUtils;
import java.io.*;
/**
* File content storage
*/
public class TemporaryContentStorage implements DBDContentStorageLocal {
private final DBPPlatform platform;
private File file;
private String charset;
public TemporaryContentStorage(DBPPlatform platform, File file, String charset)
{
this.platform = platform;
this.file = file;
this.charset = CommonUtils.toString(charset, GeneralUtils.DEFAULT_ENCODING);
}
@Override
public InputStream getContentStream()
throws IOException
{
return new FileInputStream(file);
}
@Override
public Reader getContentReader()
throws IOException
{
return new InputStreamReader(new FileInputStream(file), this.charset);
}
@Override
public long getContentLength()
{
return file.length();
}
@Override
public String getCharset()
{
return this.charset;
}
@Override
public DBDContentStorage cloneStorage(DBRProgressMonitor monitor)
throws IOException
{
// Create new local storage
File tempFile = ContentUtils.createTempContentFile(monitor, platform, "copy" + this.hashCode());
try {
try (InputStream is = new FileInputStream(file)) {
try (OutputStream os = new FileOutputStream(tempFile)) {
ContentUtils.copyStreams(is, file.length(), os, monitor);
}
}
} catch (IOException e) {
ContentUtils.deleteTempFile(tempFile);
throw new IOException(e);
}
return new TemporaryContentStorage(platform, tempFile, charset);
}
@Override
public void release()
{
ContentUtils.deleteTempFile(file);
}
@Override
public File getDataFile()
{
return file;
}
}