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Liferay Dynamic Data Lists Service
/* Copyright 2004 The Apache Software Foundation
*
* 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.apache.xmlbeans.impl.tool;
import java.io.*;
import java.util.*;
import org.apache.xmlbeans.*;
public class RunXQuery
{
public static void printUsage()
{
System.out.println("Run an XQuery against an XML instance");
System.out.println("Usage:");
System.out.println("xquery [-verbose] [-pretty] [-q | -qf query.xq] [file.xml]*");
System.out.println(" -q to specify a query on the command-line");
System.out.println(" -qf to specify a file containing a query");
System.out.println(" -pretty pretty-prints the results");
System.out.println(" -license prints license information");
System.out.println(" the query is run on each XML file specified");
System.out.println("");
}
public static void main ( String[] args ) throws Exception
{
Set flags = new HashSet();
flags.add("h");
flags.add("help");
flags.add("usage");
flags.add("license");
flags.add("version");
flags.add("verbose");
flags.add("pretty");
CommandLine cl =
new CommandLine(
args, flags,
Arrays.asList( new String[] { "q", "qf" } ) );
if (cl.getOpt("h") != null || cl.getOpt("help") != null || cl.getOpt("usage") != null)
{
printUsage();
System.exit(0);
return;
}
String[] badopts = cl.getBadOpts();
if (badopts.length > 0)
{
for (int i = 0; i < badopts.length; i++)
System.out.println("Unrecognized option: " + badopts[i]);
printUsage();
System.exit(0);
return;
}
if (cl.getOpt("license") != null)
{
CommandLine.printLicense();
System.exit(0);
return;
}
if (cl.getOpt("version") != null)
{
CommandLine.printVersion();
System.exit(0);
return;
}
args = cl.args();
if (args.length == 0)
{
printUsage();
System.exit(0);
return;
}
boolean verbose = cl.getOpt( "verbose" ) != null;
boolean pretty = cl.getOpt( "pretty" ) != null;
//
// Get and compile the query
//
String query = cl.getOpt( "q" );
String queryfile = cl.getOpt( "qf" );
if (query == null && queryfile == null)
{
System.err.println( "No query specified" );
System.exit(0);
return;
}
if (query != null && queryfile != null)
{
System.err.println( "Specify -qf or -q, not both." );
System.exit(0);
return;
}
try
{
if (queryfile != null)
{
File queryFile = new File( queryfile );
FileInputStream is = new FileInputStream( queryFile );
InputStreamReader r = new InputStreamReader( is );
StringBuffer sb = new StringBuffer();
for ( ; ; )
{
int ch = r.read();
if (ch < 0)
break;
sb.append( (char) ch );
}
r.close();
is.close();
query = sb.toString();
}
}
catch ( Throwable e )
{
System.err.println( "Cannot read query file: " + e.getMessage() );
System.exit(1);
return;
}
if (verbose)
{
System.out.println( "Compile Query:" );
System.out.println( query );
System.out.println();
}
try
{
query= XmlBeans.compileQuery( query );
}
catch ( Exception e )
{
System.err.println( "Error compiling query: " + e.getMessage() );
System.exit(1);
return;
}
//
// Get the instance
//
File[] files = cl.getFiles();
for (int i = 0; i < files.length; i++)
{
XmlObject x;
try
{
if (verbose)
{
InputStream is = new FileInputStream( files[i] );
for ( ; ; )
{
int ch = is.read();
if (ch < 0)
break;
System.out.write( ch );
}
is.close();
System.out.println();
}
x = XmlObject.Factory.parse( files[i] );
}
catch ( Throwable e )
{
System.err.println( "Error parsing instance: " + e.getMessage() );
System.exit(1);
return;
}
if (verbose)
{
System.out.println( "Executing Query..." );
System.err.println();
}
XmlObject[] result = null;
try
{
result = x.execQuery( query );
}
catch ( Throwable e )
{
System.err.println( "Error executing query: " + e.getMessage() );
System.exit(1);
return;
}
if (verbose)
{
System.out.println( "Query Result:" );
}
XmlOptions opts = new XmlOptions();
opts.setSaveOuter();
if (pretty)
opts.setSavePrettyPrint();
for (int j = 0; j < result.length; j++)
{
result[j].save( System.out, opts );
System.out.println();
}
}
}
}