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Diffstat (limited to 'odk/examples/DevelopersGuide/UCB/DataStreamRetriever.java')
| -rw-r--r-- | odk/examples/DevelopersGuide/UCB/DataStreamRetriever.java | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/odk/examples/DevelopersGuide/UCB/DataStreamRetriever.java b/odk/examples/DevelopersGuide/UCB/DataStreamRetriever.java new file mode 100644 index 000000000..5644af0c2 --- /dev/null +++ b/odk/examples/DevelopersGuide/UCB/DataStreamRetriever.java @@ -0,0 +1,227 @@ +/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * The Contents of this file are made available subject to the terms of + * the BSD license. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Sun Microsystems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + *************************************************************************/ + +import com.sun.star.ucb.OpenCommandArgument2; +import com.sun.star.ucb.OpenMode; +import com.sun.star.ucb.XContent; +import com.sun.star.io.XActiveDataSink; +import com.sun.star.io.XInputStream; + +/** + * Accessing (Loading) the Content Data Stream of a UCB Document Content + */ +public class DataStreamRetriever { + + /** + * Member properties + */ + private Helper m_helper; + private XContent m_content; + private String m_contenturl = ""; + + /** + * Constructor. + * + *@param args This constructor requires the arguments: + * -url=... (optional) + * See Help (method printCmdLineUsage()). + * Without the arguments a new connection to a + * running office cannot created. + */ + public DataStreamRetriever( String args[] ) throws java.lang.Exception { + + // Parse arguments + parseArguments( args ); + + // Init + m_helper = new Helper( getContentURL() ); + + // Create UCB content + m_content = m_helper.createUCBContent(); + } + + /** + * Read the document data stream of a document content using a + * XActiveDataSink implementation as data sink... + * + *@return XInputStream Returns input stream if stream successfully retrieved, + * null otherwise + */ + public XInputStream getDataStream() + throws com.sun.star.ucb.CommandAbortedException, com.sun.star.uno.Exception { + + XInputStream data = null; + if ( m_content != null ) { + + // Fill argument structure... + OpenCommandArgument2 arg = new OpenCommandArgument2(); + arg.Mode = OpenMode.DOCUMENT; + arg.Priority = 32768; // static final for 32768 + + // Create data sink implementation object. + XActiveDataSink dataSink = new MyActiveDataSink(); + arg.Sink = dataSink; + + // Execute command "open". The implementation of the command will + // supply an XInputStream implementation to the data sink. + m_helper.executeCommand( m_content, "open", arg ); + + // Get input stream supplied by the open command implementation. + data = dataSink.getInputStream(); + } + return data; + } + + /** + * Get connect URL. + * + *@return String That contains the connect URL + */ + public String getContentURL() { + return m_contenturl; + } + + /** + * Parse arguments + * + *@param args Arguments + */ + private void parseArguments( String[] args ) throws java.lang.Exception { + + for ( int i = 0; i < args.length; i++ ) { + if ( args[i].startsWith( "-url=" )) { + m_contenturl = args[i].substring( 5 ); + } else if ( args[i].startsWith( "-help" ) || + args[i].startsWith( "-?" )) { + printCmdLineUsage(); + System.exit( 0 ); + } + } + + if ( m_contenturl == null || m_contenturl.equals( "" )) { + m_contenturl = Helper.prependCurrentDirAsAbsoluteFileURL( "data/data.txt" ); + } + } + + /** + * Print the commands options + */ + private void printCmdLineUsage() { + System.out.println( + "Usage : DataStreamRetriever -url=..." ); + System.out.println( + "Defaults: -url=<currentdir>/data/data.txt" ); + System.out.println( + "\nExample : -url=file:///temp/my.txt" ); + } + + /** + * Print Stream content. + */ + private void printStream( XInputStream data ) + throws com.sun.star.uno.Exception { + + + // Read data from input stream...65536 + + + // Data buffer. Will be allocated by input stream implementation! + byte[][] buffer = new byte[ 1 ][ 65536 ]; + int read = data.readSomeBytes( buffer, 65536 ); + System.out.println( "Read bytes : " + read ); + System.out.println( "Read data (only first 64K displayed): "); + while ( read > 0 ) { + byte[] bytes = new byte[ read ]; + for( int i = 0; i < read; i++ ) { + bytes[ i ] = buffer[ 0 ][ i ]; + } + System.out.println( new String(bytes) ); + + // Process data contained in buffer. + read = data.readSomeBytes( buffer, 65536 ); + } + } + + /** + * Create a new connection with the specific args to a running office and + * access (Load) the content data stream of a UCB document content. + */ + public static void main ( String args[] ) { + System.out.println( "\n" ); + System.out.println( + "-----------------------------------------------------------------------" ); + System.out.println( + "DataStreamRetriever - obtains the data stream from a document resource." ); + System.out.println( + "-----------------------------------------------------------------------" ); + + try { + + DataStreamRetriever access = new DataStreamRetriever( args ); + XInputStream data = access.getDataStream(); + String url = access.getContentURL(); + if ( data != null ) { + String tempPrint = "\nGetting data stream for resource " + url + + " succeeded."; + int size = tempPrint.length(); + System.out.println( tempPrint ); + tempPrint = ""; + for( int i = 0; i < size; i++ ) { + tempPrint += "-"; + } + System.out.println( tempPrint ); + access.printStream( data ); + } else { + System.out.println( + "Getting data stream for resource " + url + " failed." ); + } + } catch ( com.sun.star.io.NotConnectedException e ) { + System.out.println( "Error: " + e ); + } catch ( com.sun.star.io.BufferSizeExceededException e ) { + System.out.println( "Error: " + e ); + } catch ( com.sun.star.io.IOException e ) { + System.out.println( "Error: " + e ); + } catch ( com.sun.star.ucb.CommandAbortedException e ) { + System.out.println( "Error: " + e ); + } catch ( com.sun.star.uno.Exception e ) { + System.out.println( "Error: " + e ); + } catch ( java.lang.Exception e ) { + System.out.println( "Error: " + e ); + } + System.exit( 0 ); + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |