/* ======================================================================
   Parts Copyright 2006 University of Leeds, Oxford University, University of the Highlands and Islands.

   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.bodington.assessment;

import java.math.BigDecimal;
import java.util.Enumeration;
import java.util.Vector;
import java.io.*;

import org.bodington.server.*;
import org.bodington.sqldatabase.*;
import org.bodington.database.*;
import org.bodington.text.BigString;

/**
 * Class that encapsulates a questionnaire question. The ordering of questions
 * within a questionnaire is determined by the value of its <code>ordinal</code>
 * property (see {@link #getOrdinal()}). Therefore the position of a question
 * in the list can be altered by changing the value of this property. A
 * <i>standard</i> question is one which consists of
 * {@link #STANDARD_STATEMENT_COUNT} responses (see
 * {@link #isStandardQuestion()}). A question may allow for a free-text
 * response (see {@link #isCanComment()}). Currently upto 1 of 10 responses
 * (labelled A - J) are possible. If the text for one of these is blank (just
 * consists of whitespace) it is regarded as invalid and thus is not returned as
 * one of the valid indices by the method {@link #getValidStatementIndices()}.
 * @see Questionnaire
 * @author Jon Maber
 * @author Alexis O'Connor
 */
public class QuestionnaireQuestion extends org.bodington.sqldatabase.SqlPersistentObject
	{
	private static final byte Q_FLAG_CAN_COMMENT	= 1;
    private static final byte Q_FLAG_STANDARD       = 2;
    private static final byte Q_FLAG_MULTI_RESPONSE = 4;
    public static final int MAX_STATEMENT_COUNT = 10;
    public static final int STANDARD_STATEMENT_COUNT = 5;
	
	private PrimaryKey primary_key;
    private PrimaryKey questionnaire_id;
	private PrimaryKey introduction_big_string_id;
	private PrimaryKey statement_a_big_string_id;
	private PrimaryKey statement_b_big_string_id;
	private PrimaryKey statement_c_big_string_id;
	private PrimaryKey statement_d_big_string_id;
	private PrimaryKey statement_e_big_string_id;
	private PrimaryKey statement_f_big_string_id;
	private PrimaryKey statement_g_big_string_id;
	private PrimaryKey statement_h_big_string_id;
	private PrimaryKey statement_i_big_string_id;
	private PrimaryKey statement_j_big_string_id;
	private int ordinal = 0;
	private byte flags = 0;
	private int statements= -1;
    
    public QuestionnaireQuestion()
        {
        // NOTE: the persistence layer relies on the introduction & statements
        // as being non-null strings, hence the initialization here.
        try
            {
            setIntroduction("");
            clearStatements();
            }
        catch ( BuildingServerException e )
            {
            return;
            }
        }
	
   	public static QuestionnaireQuestion findQuestionnaireQuestion( PrimaryKey key )
		throws BuildingServerException
		{
		return (QuestionnaireQuestion)findPersistentObject( key, QuestionnaireQuestion.class.getName() );
		}
    
	public static Enumeration findQuestionnaireQuestions( String where )
	    throws BuildingServerException
	    {
	    return findPersistentObjects( where, QuestionnaireQuestion.class.getName() );
	    }
    
	public static Enumeration findQuestionnaireQuestions( String where, String order )
	    throws BuildingServerException
	    {
	    return findPersistentObjects( where, order, QuestionnaireQuestion.class.getName() );
	    }

    public PrimaryKey getPrimaryKey()
    	{
        return primary_key;
    	}

    public void setPrimaryKey(PrimaryKey key)
    	{
        primary_key = key;
        setUnsaved();
    	}

	public PrimaryKey getQuestionnaireQuestionId()
		{
		return getPrimaryKey();
		}
		
	public void setQuestionnaireQuestionId( PrimaryKey id )
		{
		setPrimaryKey(id);
		}

    /**
     * Kept for backwards compatibility. This class is <em>not</em> an
     * instance of {@link org.bodington.server.resources.Resource} therefore it
     * should not have this method. Unfortunately, it's use is embedded in the
     * persistence layer so it is maintained for the time being. In practice,
     * the value of this property is synonymous with
     * {@link #getQuestionnaireId()}, which is why you should call that method
     * directly instead.
     * @return the ID.
     * @deprecated Use {@link #getQuestionnaireId()} instead.
     */
	public PrimaryKey getResourceId()
		{
		return getQuestionnaireId();
		}
		
    /**
     * Kept for backwards compatibility. This class is <em>not</em> an
     * instance of {@link org.bodington.server.resources.Resource} therefore it
     * should not have this method. Unfortunately, it's use is embedded in the
     * persistence layer so it is maintained for the time being.
     * @param id the ID to set.
     * @deprecated Use {@link #setQuestionnaireId(PrimaryKey)} instead.
     * @see #getResourceId()
     */
	public void setResourceId( PrimaryKey id )
		{
        setQuestionnaireId(id);
		}
    
    /**
     * Get the ID of the containing questionnaire. This is the questionnaire
     * of which this question is a part of.
     * <p>
     * NOTE: for legacy reasons, the corresponding name for this field in the
     * persistence layer is currently <code>resource_id</code>.
     * @return the ID of the containing questionnaire.
     */
    public PrimaryKey getQuestionnaireId()
        {
        return questionnaire_id;
        }
    
    /**
     * Set the ID of the containing questionnaire.
     * @param questionnaireID the ID of the containing questionnaire.
     * @see #getQuestionnaireId()
     */
    public void setQuestionnaireId(PrimaryKey questionnaireID)
        {
        questionnaire_id = questionnaireID;
        setUnsaved();
        }

	public PrimaryKey getIntroductionBigStringId()
		{
		return introduction_big_string_id;
		}

	public void setIntroductionBigStringId( PrimaryKey id )
		{
		introduction_big_string_id = id;
		setUnsaved();
		}
		
	/**
     * Get the introductory text of the question. This is the text that is used
     * to gain a response from the user, most typically an actual question.
	 * @return the introductory text of the question.
	 */
	public String getIntroduction()
		throws BuildingServerException
		{
		if ( introduction_big_string_id == null )
			return null;
		BigString bstr = BigString.findBigString( introduction_big_string_id );
		if ( bstr == null )
			return null;
		return bstr.getString();
		}
		
	/**
     * Set the introductory text.
	 * @param s the introductory text.
     * @see #getIntroduction()
	 */
	public void setIntroduction( String s )
		throws BuildingServerException
		{
		BigString bstr=null;
		if ( introduction_big_string_id != null )
			bstr = BigString.findBigString( introduction_big_string_id );
		if ( bstr == null )
			{
			bstr = new BigString();
			bstr.setString( s );
			bstr.save();
			introduction_big_string_id = bstr.getBigStringId();
			setUnsaved();
			return;
			}

		bstr.setString( s );
		bstr.save();
		}
	
	public PrimaryKey getStatementABigStringId()
		{
		return statement_a_big_string_id;
		}

	public void setStatementABigStringId( PrimaryKey id )
		{
		statement_a_big_string_id = id;
		setUnsaved();
		}
		
	public PrimaryKey getStatementBBigStringId()
		{
		return statement_b_big_string_id;
		}

	public void setStatementBBigStringId( PrimaryKey id )
		{
		statement_b_big_string_id = id;
		setUnsaved();
		}
		
	public PrimaryKey getStatementCBigStringId()
		{
		return statement_c_big_string_id;
		}

	public void setStatementCBigStringId( PrimaryKey id )
		{
		statement_c_big_string_id = id;
		setUnsaved();
		}
		
	public PrimaryKey getStatementDBigStringId()
		{
		return statement_d_big_string_id;
		}

	public void setStatementDBigStringId( PrimaryKey id )
		{
		statement_d_big_string_id = id;
		setUnsaved();
		}
		
	public PrimaryKey getStatementEBigStringId()
		{
		return statement_e_big_string_id;
		}

	public void setStatementEBigStringId( PrimaryKey id )
		{
		statement_e_big_string_id = id;
		setUnsaved();
		}
		
	public PrimaryKey getStatementFBigStringId()
		{
		return statement_f_big_string_id;
		}

	public void setStatementFBigStringId( PrimaryKey id )
		{
		statement_f_big_string_id = id;
		setUnsaved();
		}
		
	public PrimaryKey getStatementGBigStringId()
		{
		return statement_g_big_string_id;
		}

	public void setStatementGBigStringId( PrimaryKey id )
		{
		statement_g_big_string_id = id;
		setUnsaved();
		}
		
	public PrimaryKey getStatementHBigStringId()
		{
		return statement_h_big_string_id;
		}

	public void setStatementHBigStringId( PrimaryKey id )
		{
		statement_h_big_string_id = id;
		setUnsaved();
		}
		
	public PrimaryKey getStatementIBigStringId()
		{
		return statement_i_big_string_id;
		}

	public void setStatementIBigStringId( PrimaryKey id )
		{
		statement_i_big_string_id = id;
		setUnsaved();
		}
		
	public PrimaryKey getStatementJBigStringId()
		{
		return statement_j_big_string_id;
		}

	public void setStatementJBigStringId( PrimaryKey id )
		{
		statement_j_big_string_id = id;
		setUnsaved();
		}
		
	public PrimaryKey getStatementBigStringId( int n )
		throws BuildingServerException
		{
		switch ( n )
			{
			case 0:
				return getStatementABigStringId();
			case 1:
				return getStatementBBigStringId();
			case 2:
				return getStatementCBigStringId();
			case 3:
				return getStatementDBigStringId();
			case 4:
				return getStatementEBigStringId();
			case 5:
				return getStatementFBigStringId();
			case 6:
				return getStatementGBigStringId();
			case 7:
				return getStatementHBigStringId();
			case 8:
				return getStatementIBigStringId();
			case 9:
				return getStatementJBigStringId();
			}
			
		return null;
		}
		
	/**
     * Get the standard statement text for a given index. It could be imagined
     * that in future this method would be i18n aware.
	 * @param index the specified index.
	 * @return the standard statement text for a given index. 
     * @see #isStandardQuestion()
	 */
	public String getStandardStatement(int index)
        {
        // TODO: this is not exactly i18n is it!?!
        switch ( index )
            {
            case 0:
                return "I strongly agree.";
            case 1:
                return "I agree.";
            case 2:
                return "I partly agree and partly disagree.";
            case 3:
                return "I disagree.";
            case 4:
                return "I strongly disagree.";
            }
        return null;
        }
		
	/**
     * Get the statement text for the specified index. As this class maintains
     * 10 strings indexed [A - J] it is possible that all or none of these may
     * be classed as <i>invalid</i>. An invalid statement is one that just 
     * consists or whitespace. In order to acquire the valid statement indices,
     * call the method {@link #getValidStatementIndices()} first.
	 * @param n the specified index.
	 * @return the statement text for the specified index.
     * @see #getValidStatementIndices()
	 */
	public String getStatement( int n )
		throws BuildingServerException
		{
		if ( n<0 || n>MAX_STATEMENT_COUNT - 1 )
			return null;
			
		PrimaryKey big_string_id = null;
		switch ( n )
			{
			case 0:
				big_string_id = getStatementABigStringId();
				break;
			case 1:
				big_string_id = getStatementBBigStringId();
				break;
			case 2:
				big_string_id = getStatementCBigStringId();
				break;
			case 3:
				big_string_id = getStatementDBigStringId();
				break;
			case 4:
				big_string_id = getStatementEBigStringId();
				break;
			case 5:
				big_string_id = getStatementFBigStringId();
				break;
			case 6:
				big_string_id = getStatementGBigStringId();
				break;
			case 7:
				big_string_id = getStatementHBigStringId();
				break;
			case 8:
				big_string_id = getStatementIBigStringId();
				break;
			case 9:
				big_string_id = getStatementJBigStringId();
				break;
			}
			
		if ( big_string_id == null )
			return null;
			
		BigString bs = BigString.findBigString( big_string_id );
        
        // NOTE: this is required for backwards compatibility:
        if ( isStandardQuestion() && bs.toString().length() == 0 )
            return getStandardStatement( n );
		
		return bs.toString();
		}
    
    /**
     * Clear all the statements. This sets the text of all the statements to be
     * blank strings. This renders them <i>invalid</i>.
     * @see #getValidStatementIndices()
     */
    public void clearStatements() throws BuildingServerException
        {
        // TODO: this may well be a sub-optimal implementation.
        for ( int i = 0; i < MAX_STATEMENT_COUNT; i++ )
            setStatement( i, "" );
        }
		
	public void setStatement( int n, String s )
		throws BuildingServerException
		{
		if ( n<0 || n>MAX_STATEMENT_COUNT - 1 )
			return;

		PrimaryKey big_string_id = null;
		switch ( n )
			{
			case 0:
				big_string_id = getStatementABigStringId();
				break;
			case 1:
				big_string_id = getStatementBBigStringId();
				break;
			case 2:
				big_string_id = getStatementCBigStringId();
				break;
			case 3:
				big_string_id = getStatementDBigStringId();
				break;
			case 4:
				big_string_id = getStatementEBigStringId();
				break;
			case 5:
				big_string_id = getStatementFBigStringId();
				break;
			case 6:
				big_string_id = getStatementGBigStringId();
				break;
			case 7:
				big_string_id = getStatementHBigStringId();
				break;
			case 8:
				big_string_id = getStatementIBigStringId();
				break;
			case 9:
				big_string_id = getStatementJBigStringId();
				break;
			}
			
		BigString bs;
		
		if ( big_string_id == null )
			{
			bs = new BigString();
			bs.setString( s );
			bs.save();
			big_string_id = bs.getBigStringId();
			switch ( n )
				{
				case 0:
					setStatementABigStringId( big_string_id );
					break;
				case 1:
					setStatementBBigStringId( big_string_id );
					break;
				case 2:
					setStatementCBigStringId( big_string_id );
					break;
				case 3:
					setStatementDBigStringId( big_string_id );
					break;
				case 4:
					setStatementEBigStringId( big_string_id );
					break;
				case 5:
					setStatementFBigStringId( big_string_id );
					break;
				case 6:
					setStatementGBigStringId( big_string_id );
					break;
				case 7:
					setStatementHBigStringId( big_string_id );
					break;
				case 8:
					setStatementIBigStringId( big_string_id );
					break;
				case 9:
					setStatementJBigStringId( big_string_id );
					break;
				}
			setUnsaved();
			return;
			}

		bs = BigString.findBigString( big_string_id );
		
		if ( bs==null )
			return;

		bs.setString( s );
		bs.save();
		}
	
	/**
     * Get the ordinal of this question. The aggregating parent container for a
     * questionnaire question, is an instance of {@link Questionnaire}.
     * Questions within a questionnaire are ordered on the basis of their
     * ordinal. This allows the ordering of a question to be altered by changing
     * its ordinal.
     * @return the ordinal of this question.
     * @see Questionnaire
     */
	public int getOrdinal()
		{
		return ordinal;
		}
		
	public void setOrdinal( int o )
		{
		if ( o==ordinal )
			return;
		ordinal = o;
		setUnsaved();
		}
		
	public byte getFlags()
		{
		return flags;
		}
		
	public void setFlags( byte b )
		{
		if ( b==flags )
			return;
		flags = b;
		setUnsaved();
		}

	/**
     * Indicates whether this question allows for a free text response. Whether
     * or not a question allows for a free text response is mutually exclusive
     * of whether or not there are any statements.
     * @return <code>true</code> if this question allows for a free text
     *         response, otherwise <code>false</code>.
     */
	public boolean isCanComment()
		{
		return (flags & Q_FLAG_CAN_COMMENT) != 0;
		}
    
	/**
     * Set whether or not this question allows for a free text comment.
	 * @param b the value for this property to take.
     * @see #isCanComment()
	 */
	public void setCanComment( boolean b )
		{
		if ( isCanComment() == b )
			return;
		setFlags( (byte)(getFlags() ^ Q_FLAG_CAN_COMMENT) );
		}

	/**
     * Indicates whether or not this question is a standard one. A standard
     * question has {@link #STANDARD_STATEMENT_COUNT} number of statements. In
     * turn, the statement at each index corresponds with the statement returned
     * by {@link #getStandardStatement(int)}.
     * @return <code>true</code> if this question is a standard one, otherwise
     *         <code>false</code>.
     * @see #STANDARD_STATEMENT_COUNT
     */
	public boolean isStandardQuestion()
		{
		return (flags & Q_FLAG_STANDARD) != 0;
		}
    
	public void setStandardQuestion( boolean b )
		throws BuildingServerException
		{
		if ( isStandardQuestion() == b )
			return;


		setFlags( (byte)(getFlags() ^ Q_FLAG_STANDARD) );

		
		if ( isStandardQuestion() )
            {
            clearStatements();
			for ( int i=0; i<STANDARD_STATEMENT_COUNT; i++ )
				setStatement( i, getStandardStatement(i) );
            }
		}
    
    /**
     * Indicates whether or not the multiple-choice element allows for multiple
     * responses. Multiple responses means that where there are <code>N</code>
     * multiple-choice items to choose from, the respondent can select 
     * <code>0</code> to <code>N</code> of these items. 
     * @return <code>true</code> if the multiple-choice element allows for
     *         multiple responses, otherwise <code>false</code>.
     * @see #isMultipleChoice()        
     */
    public boolean isMultipleResponse()
        {
        return (flags & Q_FLAG_MULTI_RESPONSE) != 0;
        }
    
    /**
     * Set whether the multiple-choice element allows for multiple responses.
     * @param multiResponse the value to set.
     * @see #isMultipleResponse()
     */
    public void setMultipleResponse( boolean multiResponse ) 
        throws BuildingServerException
        {
        if ( isMultipleResponse() == multiResponse )
            return;
        if( multiResponse )
            setStandardQuestion( false );
        setFlags( (byte)(getFlags() ^ Q_FLAG_MULTI_RESPONSE) );
        }

	/**
     * Get the number of valid statements. An <i>invalid</i> statement is one
     * that only contains whitespace. Therefore, a valid statement is regarded
     * as one that actually contains content.
     * @return the number of valid statements.
     * @throws BuildingServerException
     * @see #getValidStatementIndices()
     */
	public int getStatementCount()
		throws BuildingServerException
		{
		if ( !isUnsaved() && statements>=0 )
			return statements;
			
		statements=getValidStatementIndices().length;
		return statements;
		}
    
    /**
     * Get the indices of the valid statements. A valid statement is regarded
     * as one that actually contains content. This method returns the indices
     * of the statements in order.
     * @return the indices of the valid statements.
     * @throws BuildingServerException
     * @see #getStatementCount()
     */
    public int[] getValidStatementIndices() throws BuildingServerException
        {
        int[] indices = new int[0];
        if ( isStandardQuestion() )
            {
            indices = new int[STANDARD_STATEMENT_COUNT];
            for ( int i = 0; i < indices.length; i++ )
                indices[i] = i;
            }
        else
            {
            Vector v = new Vector();
            for ( int i = 0; i < MAX_STATEMENT_COUNT; i++ )
                {
                String s = getStatement( i );
                if ( s != null && s.trim().length() > 0 )
                    v.add( new Integer( i ) );
                }
            indices = new int[v.size()];
            for ( int i = 0; i < indices.length; i++ )
                indices[i] = ((Integer)v.elementAt( i )).intValue();
            }

        return indices;
        }
    
    /**
     * Indicates whether or not this question has a multiple-choice element.
     * @return <code>true</code> if this question has a multiple-choice
     *         element, otherwise <code>false</code>.
     * @see #getStatementCount()
     */
    public boolean isMultipleChoice() throws BuildingServerException
        { 
        return getStatementCount() > 0; 
        }

	public void setUnsaved()
		{
		statements=-1;
		super.setUnsaved();
		}
		
	public void exportXml( PrintWriter xml_out )
	    throws IOException, BuildingServerException
	    {
	    exportXml( xml_out, true );
	    }
	    
	/**
	 * Export questions as QTI XML.
	 * 'Composite' refers to whether comment/free text response box is included in same 'item' element as the rest of the question or not.
	 */
	public void exportXml( PrintWriter xml_out, boolean allow_composite )
	    throws IOException, BuildingServerException
	    {
	    if ( isCanComment() )
	        {
	        if ( getStatementCount() > 0 )
	            {
	            if ( allow_composite )
	                exportXmlComposite( xml_out, "pk_" + getPrimaryKey() + "_composite"  );
	            else
	                {
	                exportXmlChoice( xml_out, "pk_" + getPrimaryKey() + "_choice", true  );
	                exportXmlComment( xml_out, "pk_" + getPrimaryKey() + "_comment", true  );
	                }
	            }
	        else
	            {
                exportXmlComment( xml_out, "pk_" + getPrimaryKey() + "_comment", false );
                }
	        }
	    else
	        {
	        if ( getStatementCount() > 0 )
                exportXmlChoice( xml_out, "pk_" + getPrimaryKey() + "_choice", false );
            else
                exportXmlExplanation( xml_out, "pk_" + getPrimaryKey() + "_explanation"  );
	        }
	    }

	private void exportXmlExplanation( PrintWriter xmlout, String ident )
	    throws IOException, BuildingServerException
	    {
        xmlout.print( "\t<item ident=\"" );
        xmlout.print( ident );
        xmlout.print( "\">" );
        xmlout.println();

        xmlout.println( "\t\t<itemmetadata>" );
        xmlout.println( "\t\t\t<qmd_computerscored>No</qmd_computerscored>" );
        xmlout.println( "\t\t\t<qmd_feedbackpermitted>No</qmd_feedbackpermitted>" );
        xmlout.println( "\t\t\t<qmd_hintspermitted>No</qmd_hintspermitted>" );
        xmlout.println( "\t\t\t<qmd_itemtype>Explanation</qmd_itemtype>" );
        xmlout.println( "\t\t\t<qmd_maximumscore>0</qmd_maximumscore>" );
        xmlout.println( "\t\t\t<qmd_renderingtype>None</qmd_renderingtype>" );
        xmlout.println( "\t\t\t<qmd_responsetype>None</qmd_responsetype>" );
        xmlout.println( "\t\t\t<qmd_scoringpermitted>No</qmd_scoringpermitted>" );
        xmlout.println( "\t\t\t<qmd_toolvendor>Bodington System</qmd_toolvendor>" );
        xmlout.println( "\t\t</itemmetadata>" );

        xmlout.println( "\t\t<presentation>" );
            xmlout.println( "\t\t\t<material>" );
                xmlout.print( "\t\t\t\t<mattext texttype=\"text/html\"><![CDATA[" );
                xmlout.print( getIntroduction() );
                xmlout.print( "]]></mattext>" );
                xmlout.println();
            xmlout.println( "\t\t\t</material>" );

            xmlout.println( "<response_extension/>" );
        xmlout.println( "\t\t</presentation>" );
        xmlout.print( "\t</item>" );
        xmlout.println();
        }
	    
	private void exportXmlComment( PrintWriter xmlout, String ident, boolean broken_composite )
	    throws IOException, BuildingServerException
	    {
        xmlout.print( "\t<item ident=\"" );
        xmlout.print( ident );
        xmlout.print( "\">" );
        xmlout.println();

        xmlout.println( "\t\t<itemmetadata>" );
        xmlout.println( "\t\t\t<qmd_computerscored>No</qmd_computerscored>" );
        xmlout.println( "\t\t\t<qmd_feedbackpermitted>No</qmd_feedbackpermitted>" );
        xmlout.println( "\t\t\t<qmd_hintspermitted>No</qmd_hintspermitted>" );
        xmlout.println( "\t\t\t<qmd_itemtype>String</qmd_itemtype>" );
        xmlout.println( "\t\t\t<qmd_maximumscore>0</qmd_maximumscore>" );
        xmlout.println( "\t\t\t<qmd_renderingtype>String</qmd_renderingtype>" );
        xmlout.println( "\t\t\t<qmd_responsetype>Single</qmd_responsetype>" );
        xmlout.println( "\t\t\t<qmd_scoringpermitted>No</qmd_scoringpermitted>" );
        xmlout.println( "\t\t\t<qmd_toolvendor>Bodington System</qmd_toolvendor>" );
        xmlout.println( "\t\t</itemmetadata>" );

        xmlout.println( "\t\t<presentation>" );
            xmlout.println( "\t\t\t<material>" );
                xmlout.print( "\t\t\t\t<mattext texttype=\"text/html\"><![CDATA[" );
                if ( broken_composite )
                    {
                    xmlout.println();
                    xmlout.println( "<P>This is the comment box for the previous question.</P>" );
                    }
                else
                    xmlout.print( getIntroduction() );
                xmlout.print( "]]></mattext>" );
                xmlout.println();
            xmlout.println( "\t\t\t</material>" );

            xmlout.println( "\t\t\t<response_str ident=\"1\" rcardinality=\"Single\">" );
            xmlout.println( "\t\t\t\t<render_fib fibtype=\"String\" prompt=\"Box\" rows=\"5\" columns=\"30\" />" );
            xmlout.println( "\t\t\t</response_str>" );

        xmlout.println( "\t\t</presentation>" );
        xmlout.print( "\t</item>" );
        xmlout.println();
        }
	    
	private void exportXmlChoice( PrintWriter xmlout, String ident, boolean broken_composite )
	    throws IOException, BuildingServerException
	    {
	    int i, j, n;

        xmlout.print( "\t<item ident=\"" );
        xmlout.print( ident );
        xmlout.print( "\">" );
        xmlout.println();

        xmlout.println( "\t\t<itemmetadata>" );
        xmlout.println( "\t\t\t<qmd_computerscored>No</qmd_computerscored>" );
        xmlout.println( "\t\t\t<qmd_feedbackpermitted>No</qmd_feedbackpermitted>" );
        xmlout.println( "\t\t\t<qmd_hintspermitted>No</qmd_hintspermitted>" );
        xmlout.println( "\t\t\t<qmd_itemtype>Logical Identifier</qmd_itemtype>" );
        xmlout.println( "\t\t\t<qmd_maximumscore>0</qmd_maximumscore>" );
        xmlout.println( "\t\t\t<qmd_renderingtype>Choice</qmd_renderingtype>" );
        xmlout.println( "\t\t\t<qmd_responsetype>Single</qmd_responsetype>" );
        xmlout.println( "\t\t\t<qmd_scoringpermitted>No</qmd_scoringpermitted>" );
        xmlout.println( "\t\t\t<qmd_toolvendor>Bodington System</qmd_toolvendor>" );
        xmlout.println( "\t\t</itemmetadata>" );
                
        xmlout.println( "\t\t<presentation>" );
            xmlout.println( "\t\t\t<material>" );
                xmlout.print( "\t\t\t\t<mattext texttype=\"text/html\"><![CDATA[" );
                xmlout.print( getIntroduction() );
                //if ( broken_composite )
                //    {
                //    xmlout.println();
                //    xmlout.println( "<P>(The next question contains the comment box for this question.)</P>" );
                //    }
                xmlout.print( "]]></mattext>" );
                xmlout.println();
            xmlout.println( "\t\t\t</material>" );
            String cardinality = isMultipleResponse() ? "Multiple" : "Single";
            xmlout.println( "\t\t\t<response_lid ident=\"1\" rcardinality=\"" 
                + cardinality + "\">" );

                xmlout.println( "\t\t\t\t<render_choice shuffle=\"No\">" );
                        
        n=getStatementCount();
        for ( j=0; j<n; j++ )
            {
            xmlout.print( "\t\t\t\t\t<response_label ident=\"" );
            xmlout.print( (char)('A'+j) );
            xmlout.print( "\">" );
            xmlout.println();
                        
            xmlout.println( "\t\t\t\t\t\t<material>" );

                xmlout.print( "\t\t\t\t\t\t\t<mattext texttype=\"text/html\"><![CDATA[" );
                xmlout.print( getStatement( j ) );
                xmlout.print( "]]></mattext>" );
                xmlout.println();

            xmlout.println( "\t\t\t\t\t\t</material>" );
            xmlout.println( "\t\t\t\t\t</response_label>" );
            }

                xmlout.println( "\t\t\t\t</render_choice>" );
            xmlout.println( "\t\t\t</response_lid>" );
        xmlout.println( "\t\t</presentation>" );
        xmlout.print( "\t</item>" );
        xmlout.println();
        }
	    	    
	private void exportXmlComposite( PrintWriter xmlout, String ident )
	    throws IOException, BuildingServerException
	    {
	    int i, j, n;
	        
        xmlout.print( "\t<item ident=\"" );
        xmlout.print( ident );
        xmlout.print( "\">" );
        xmlout.println();

        xmlout.println( "\t\t<itemmetadata>" );
        xmlout.println( "\t\t\t<qmd_computerscored>No</qmd_computerscored>" );
        xmlout.println( "\t\t\t<qmd_feedbackpermitted>No</qmd_feedbackpermitted>" );
        xmlout.println( "\t\t\t<qmd_hintspermitted>No</qmd_hintspermitted>" );
        xmlout.println( "\t\t\t<qmd_itemtype>Composite</qmd_itemtype>" );
        xmlout.println( "\t\t\t<qmd_maximumscore>0</qmd_maximumscore>" );
        //xmlout.println( "\t\t\t<qmd_renderingtype>Choice</qmd_renderingtype>" );
        xmlout.println( "\t\t\t<qmd_responsetype>Multiple</qmd_responsetype>" );
        xmlout.println( "\t\t\t<qmd_scoringpermitted>No</qmd_scoringpermitted>" );
        xmlout.println( "\t\t\t<qmd_toolvendor>Bodington System</qmd_toolvendor>" );
        xmlout.println( "\t\t</itemmetadata>" );
                
        xmlout.println( "\t\t<presentation>" );
            xmlout.println( "\t\t\t<material>" );
                xmlout.print( "\t\t\t\t<mattext texttype=\"text/html\"><![CDATA[" );
                xmlout.print( getIntroduction() );
                xmlout.print( "]]></mattext>" );
                xmlout.println();
            xmlout.println( "\t\t\t</material>" );
            String cardinality = isMultipleResponse() ? "Multiple" : "Single";
            xmlout.println( "\t\t\t<response_lid ident=\"1\" rcardinality=\""
                + cardinality + "\">" );

                xmlout.println( "\t\t\t\t<render_choice shuffle=\"No\">" );
                        
        n=getStatementCount();
        for ( j=0; j<n; j++ )
            {
            xmlout.print( "\t\t\t\t\t<response_label ident=\"" );
            xmlout.print( (char)('A'+j) );
            xmlout.print( "\">" );
            xmlout.println();
                        
            xmlout.println( "\t\t\t\t\t\t<material>" );

                xmlout.print( "\t\t\t\t\t\t\t<mattext texttype=\"text/html\"><![CDATA[" );
                xmlout.print( getStatement( j ) );
                xmlout.print( "]]></mattext>" );
                xmlout.println();

            xmlout.println( "\t\t\t\t\t\t</material>" );
            xmlout.println( "\t\t\t\t\t</response_label>" );
            }

                xmlout.println( "\t\t\t\t</render_choice>" );
            xmlout.println( "\t\t\t</response_lid>" );

            xmlout.println( "\t\t\t<response_str ident=\"2\" rcardinality=\"Single\">" );
            xmlout.println( "\t\t\t\t<render_fib fibtype=\"String\" prompt=\"Box\" rows=\"5\" columns=\"30\" />" );
            xmlout.println( "\t\t\t</response_str>" );

        xmlout.println( "\t\t</presentation>" );
        xmlout.print( "\t</item>" );
        xmlout.println();
        }
    }