/*
* 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.code.NotNull;
import org.jkiss.dbeaver.Log;
import org.jkiss.dbeaver.model.data.DBDContentCached;
import org.jkiss.dbeaver.model.data.DBDContentStorage;
import org.jkiss.dbeaver.model.runtime.DBRProgressMonitor;
import org.jkiss.dbeaver.utils.GeneralUtils;
import java.io.*;
/**
* String content storage
*/
public class StringContentStorage implements DBDContentStorage, DBDContentCached {
private static final Log log = Log.getLog(StringContentStorage.class);
private String data;
public StringContentStorage(String data)
{
this.data = data;
}
@Override
public InputStream getContentStream()
throws IOException
{
return new ByteArrayInputStream(data.getBytes(GeneralUtils.getDefaultFileEncoding()));
}
@Override
public Reader getContentReader()
throws IOException
{
return new StringReader(data);
}
@Override
public long getContentLength()
{
return data.length();
}
@Override
public String getCharset()
{
return GeneralUtils.getDefaultFileEncoding();
}
@Override
public DBDContentStorage cloneStorage(DBRProgressMonitor monitor)
throws IOException
{
return new StringContentStorage(data);
}
@Override
public void release()
{
data = null;
}
public static StringContentStorage createFromReader(
Reader stream,
long contentLength)
throws IOException
{
if (contentLength > Integer.MAX_VALUE / 2) {
throw new IOException("Too big content length for memory storage: " + contentLength);
}
StringBuilder buffer = new StringBuilder((int) contentLength);
char[] charBuffer = new char[10000];
for (;;) {
int count = stream.read(charBuffer);
if (count <= 0) {
break;
}
buffer.append(charBuffer, 0, count);
}
if (buffer.length() != contentLength) {
log.warn("Actual content length (" + buffer.length() + ") is less than declared: " + contentLength);
}
return new StringContentStorage(buffer.toString());
}
@NotNull
public static StringContentStorage createFromReader(Reader stream)
throws IOException
{
StringBuilder buffer = new StringBuilder(1000);
for (;;) {
char[] charBuffer = new char[10000];
int count = stream.read(charBuffer);
if (count <= 0) {
break;
}
buffer.append(charBuffer, 0, count);
}
return new StringContentStorage(buffer.toString());
}
@Override
public String getCachedValue() {
return data;
}
}