Package org.exist.debugger.xquery

Source Code of org.exist.debugger.xquery.Source

/*
*  eXist Open Source Native XML Database
*  Copyright (C) 2011 The eXist Project
*  http://exist-db.org
*
*  This program is free software; you can redistribute it and/or
*  modify it under the terms of the GNU Lesser General Public License
*  as published by the Free Software Foundation; either version 2
*  of the License, or (at your option) any later version.
*
*  This program is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU Lesser General Public License for more details.
*
*  You should have received a copy of the GNU Lesser General Public
*  License along with this library; if not, write to the Free Software
*  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*
*  $Id$
*/
package org.exist.debugger.xquery;

import org.apache.mina.core.session.IoSession;
import org.exist.debuggee.Debuggee;
import org.exist.debuggee.dbgp.packets.Command;
import org.exist.debugger.Utils;
import org.exist.dom.QName;
import org.exist.storage.BrokerPool;
import org.exist.xquery.BasicFunction;
import org.exist.xquery.Cardinality;
import org.exist.xquery.FunctionSignature;
import org.exist.xquery.XPathException;
import org.exist.xquery.XQueryContext;
import org.exist.xquery.value.FunctionParameterSequenceType;
import org.exist.xquery.value.FunctionReturnSequenceType;
import org.exist.xquery.value.Sequence;
import org.exist.xquery.value.SequenceType;
import org.exist.xquery.value.StringValue;
import org.exist.xquery.value.Type;

/**
*
* @author <a href="mailto:shabanovd@gmail.com">Dmitriy Shabanov</a>
*/
public class Source extends BasicFunction {

  public final static FunctionSignature signatures[] = {
    new FunctionSignature(
      new QName("source", Module.NAMESPACE_URI, Module.PREFIX),
      "",
      new SequenceType[] {
        new FunctionParameterSequenceType(
          "session id",
          Type.STRING,
          Cardinality.EXACTLY_ONE,
          ""
        ),
        new FunctionParameterSequenceType(
          "file uri",
          Type.STRING,
          Cardinality.EXACTLY_ONE,
          ""
        )
      },
      new FunctionReturnSequenceType(
        Type.NODE,
        Cardinality.EXACTLY_ONE,
        ""
      )
    )
  };

  public Source(XQueryContext context, FunctionSignature signature) {
    super(context, signature);
  }

  @Override
  public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {

    try {
      Debuggee dbgr = BrokerPool.getInstance().getDebuggee();
     
      IoSession session = (IoSession) dbgr.getSession(args[0].getStringValue());
      if (session == null) return StringValue.EMPTY_STRING;
     
      Command command = new org.exist.debuggee.dbgp.packets.Source(session, "f "+args[1].getStringValue());
      command.exec();
     
      //XXX: make sure it executed
     
      return Utils.nodeFromString( getContext(), new String( command.responseBytes() ) );
     
    } catch (Throwable e) {
      throw new XPathException(this, Module.DEBUG001, e);
    }
  }
}
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