/*
* Copyright (c) 2013-2015 Josef Hardi <josef.hardi@gmail.com>
*
* 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.obidea.semantika.io;
import java.io.IOException;
import java.io.OutputStream;
import java.io.Writer;
import java.net.URI;
public interface IDocumentTarget
{
/**
* Determines if a writer is available from this document target.
*
* @return <code>true</code> if a writer can be obtained from this document
* target, or <code>false</code> otherwise.
*/
boolean isWriterAvailable();
/**
* Gets the writer from this document target. This method may be called
* multiple times. Each invocation will return a new <code>Writer</code>.
* This method should not be called if the <code>isWriterAvailable</code>
* method returns <code>false</code>. A <code>RuntimeException</code> will be
* thrown if it happens.
*
* @return A new <code>Writer</code> from which the document target can be
* write.
*/
Writer getWriter() throws IOException;
/**
* Determines if an output stream is available from this document target.
*
* @return <code>true</code> if an output stream can be obtained, or
* <code>false</code> otherwise.
*/
boolean isOutputStreamAvailable();
/**
* Gets the output stream from this document target. This method may be
* called multiple times. Each invocation will return a new
* <code>OutputStream</code>. This method should not be called if the
* <code>isOutputStreamAvailable</code> method returns <code>false</code>. A
* <code>RuntimeException</code> will be thrown if it happens.
*
* @return A new input stream from which this document source can be read.
*/
OutputStream getOutputStream() throws IOException;
/**
* Gets the document target URI.
*
* @return The document URI.
*/
URI getDocumentUri();
}