EDIT

/**

* Copyright (C) 2007 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.model.description;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import javax.persistence.Entity;

import javax.persistence.FetchType;

import javax.persistence.ManyToOne;

import javax.persistence.MapKeyJoinColumn;

import javax.persistence.OneToMany;

import javax.persistence.Transient;

import javax.validation.constraints.NotNull;

import javax.xml.bind.annotation.XmlAccessType;

import javax.xml.bind.annotation.XmlAccessorType;

import javax.xml.bind.annotation.XmlElement;

import javax.xml.bind.annotation.XmlIDREF;

import javax.xml.bind.annotation.XmlRootElement;

import javax.xml.bind.annotation.XmlSchemaType;

import javax.xml.bind.annotation.XmlTransient;

import javax.xml.bind.annotation.XmlType;

import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;

import org.apache.log4j.Logger;

import org.hibernate.annotations.Cascade;

import org.hibernate.annotations.CascadeType;

import org.hibernate.envers.Audited;

import org.hibernate.search.annotations.Field;

import org.hibernate.search.annotations.FieldBridge;

import org.hibernate.search.annotations.Indexed;

import org.hibernate.search.annotations.Store;

import eu.etaxonomy.cdm.common.CdmUtils;

import eu.etaxonomy.cdm.hibernate.search.MultilanguageTextFieldBridge;

import eu.etaxonomy.cdm.jaxb.MultilanguageTextAdapter;

import eu.etaxonomy.cdm.model.common.IMultiLanguageTextHolder;

import eu.etaxonomy.cdm.model.common.Language;

import eu.etaxonomy.cdm.model.common.LanguageString;

import eu.etaxonomy.cdm.model.common.MultilanguageTextHelper;

import eu.etaxonomy.cdm.model.term.TermBase;

/**

 * This class represents information pieces expressed in one or several natural

 * languages (for the {@link Feature feature} "medical use" for instance).

 * A {@link TextFormat format} used for structuring the text may also be stated.

 * <P>

 * This class corresponds partially to NaturalLanguageDescriptionType according

 * to the SDD schema.

 *

 * @author m.doering

 * @version 1.0

 * @since 08-Nov-2007 13:06:59

 */

@SuppressWarnings("unused")

@XmlAccessorType(XmlAccessType.FIELD)

@XmlType(name = "TextData", propOrder = {

    "multilanguageText",

    "format"

})

@XmlRootElement(name = "TextData")

@Entity

@Audited

@Indexed(index = "eu.etaxonomy.cdm.model.description.DescriptionElementBase")

public class TextData extends DescriptionElementBase implements IMultiLanguageTextHolder, Cloneable{

    private static final long serialVersionUID = -2165015581278282615L;

    private static final Logger logger = Logger.getLogger(TextData.class);

    //@XmlElement(name = "MultiLanguageText", type = MultilanguageText.class)

    @XmlElement(name = "MultiLanguageText")

    @XmlJavaTypeAdapter(MultilanguageTextAdapter.class)

    @OneToMany (fetch= FetchType.LAZY, orphanRemoval=true)

    @MapKeyJoinColumn(name="multilanguagetext_mapkey_id")

    @Cascade({CascadeType.SAVE_UPDATE,CascadeType.MERGE, CascadeType.DELETE})

    @Field(name="text", store=Store.YES)

    @FieldBridge(impl=MultilanguageTextFieldBridge.class)

    @NotNull

    private Map<Language, LanguageString> multilanguageText = new HashMap<>();

    @XmlElement(name = "Format")

    @XmlIDREF

    @XmlSchemaType(name = "IDREF")

    @ManyToOne(fetch = FetchType.LAZY)

    private TextFormat format;

    @XmlTransient

    @Transient

    private boolean isHashMapHibernateBugFixed = false;

    // ************* CONSTRUCTORS *************/

    /**

     * Class constructor: creates a new empty text data instance.

     *

     * @see #TextData(Feature)

     */

    public TextData(){

        this(null);

    }

    /**

     * Class constructor: creates a new text data instance with the {@link Feature feature}

     * to be described.

     *

     * @param	feature	the feature the text data refer to

     * @see 			#TextData()

     */

    public TextData(Feature feature){

        super(feature);

    }

    //********* METHODS **************************************/

    /**

     * Creates a new empty text data instance.

     *

     * @see #NewInstance(Feature)

     * @see #NewInstance(String, Language, TextFormat)

     * @see	#NewInstance(Feature, String, Language, TextFormat)

     */

    public static TextData NewInstance(){

        return new TextData();

    }

    /**

     * Creates a new text data instance with the {@link Feature feature}

     * to be described.

     *

     * @param	feature	the feature the text data refer to

     * @see 			#NewInstance()

     * @see 			#NewInstance(String, Language, TextFormat)

     * @see					#NewInstance(Feature, String, Language, TextFormat)

     */

    public static TextData NewInstance(Feature feature){

        return new TextData(feature);

    }

    /**

     * Creates a new text data instance with a given text in a given particular

     * {@link Language language} and with the given text format for structuring it.

     *

     * @param	text		the text string with the content of the description

     * @param	language	the language in which the text string is formulated

     * @param	format		the text format used to structure the text string

     * @see 				#NewInstance()

     * @see 				#NewInstance(Feature)

     * @see					#NewInstance(Feature, String, Language, TextFormat)

     */

    public static TextData NewInstance(String text, Language language, TextFormat format){

        TextData result =  new TextData();

        result.putText(language, text);

        result.setFormat(format);

        return result;

    }

    /**

     * Creates a new text data instance with a given text in a given particular

     * {@link Language language} and with the given text format for structuring it.

     *

     * @param   feature	    the feature the text data refer to

     * @param	text		the text string with the content of the description

     * @param	language	the language in which the text string is formulated

     * @param	format		the text format used to structure the text string

     * @see 				#NewInstance()

     * @see 				#NewInstance(Feature)

     * @see					#NewInstance(String, Language, TextFormat)

     */

    public static TextData NewInstance(Feature feature, String text, Language language, TextFormat format){

        TextData result =  new TextData(feature);

        result.putText(language, text);

        result.setFormat(format);

        return result;

    }

    /**

     * Returns a copy of the multilanguage text with the content of <i>this</i> text data.

     * The different {@link LanguageString language strings} (texts) contained in the

     * multilanguage text should all have the same meaning.

     *

     * @see	#getText(Language)

     */

    public Map<Language, LanguageString> getMultilanguageText() {

        fixHashMapHibernateBug();

//    	HashMap<Language, LanguageString> result = new HashMap<>();

//		result.putAll(multilanguageText);

//		return result;

        return multilanguageText;

    }

//    /**

//     * Sets the multilanguage text.

//	 * The different {@link LanguageString language strings} (texts) contained in the

//	 * multilanguage text should all have the same meaning.

//     *

//     * @param multilanguageText

//     */

//    private void setMultilanguageText(Map<Language,LanguageString> multilanguageText) {

//    	this.multilanguageText = multilanguageText;

//    }

    /**

     * Returns the multilanguage text with the content of <i>this</i> text data for

     * a specific language.

     *

     * @param language the language in which the text string looked for is formulated

     * @return

     */

    public LanguageString getLanguageText(Language language){

        //work around for the problem that contains does not work correctly in persisted maps.

        //This is because the persisted uuid is not present when loading the map key and

        //therefore the hash code for language is not computed correctly

        //see DescriptionElementDaoHibernateTest and #2114

//    	for (Map.Entry<Language, LanguageString> entry : multilanguageText.entrySet()){

//    		if (entry.getKey() != null){

//        		if (entry.getKey().equals(language)){

//        			return entry.getValue();

//        		}

//    		}else{

//    			if (language == null){

//    				return entry.getValue();

//    			}

//    		}

//    	}

//    	return null;

        //old

        return getMultilanguageText().get(language);

    }

    /**

     * Returns the text string in the given {@link Language language} with the content

     * of <i>this</i> text data.

     *

     * @param language	the language in which the text string looked for is formulated

     * @see				#getMultilanguageText(Language)

     */

    public String getText(Language language) {

        LanguageString languageString = getLanguageText(language);

        if (languageString == null){

            return null;

        }else{

            return languageString.getText();

        }

    }

    /**

     * Returns the LanguageString in the preferred language. Preferred languages

     * are specified by the parameter languages, which receives a list of

     * Language instances in the order of preference. If no representation in

     * any preferred languages is found the method falls back to return the

     * Representation in Language.DEFAULT() and if neccesary further falls back

     * to return the first element found if any.

     *

     * TODO think about this fall-back strategy &

     * see also {@link TermBase#getPreferredRepresentation(List)}

     *

     * @param languages

     * @return

     */

    public LanguageString getPreferredLanguageString(List<Language> languages) {

        return MultilanguageTextHelper.getPreferredLanguageString(getMultilanguageText(), languages);

    }

    private void fixHashMapHibernateBug() {

        //workaround for key problem

        if(! isHashMapHibernateBugFixed){

            HashMap<Language, LanguageString> tmp = new HashMap<>();

            tmp.putAll(multilanguageText);

            multilanguageText.clear();

            multilanguageText.putAll(tmp);

            isHashMapHibernateBugFixed = true;

        }

    }

    /**

     * Creates a {@link LanguageString language string} based on the given text string

     * and the given {@link Language language}, returns it and adds it to the multilanguage

     * text representing the content of <i>this</i> text data.

     *

     * @param language	the language in which the text string is formulated

     * @param text		the string representing the content of the text data

     * 					in a particular language

     *

     * @see    	   		#getMultilanguageText()

     * @see    	   		#putText(LanguageString)

     * @return			the previous language string associated with the given Language, or null if there was no mapping for the given Language

     */

    public LanguageString putText(Language language, String text) {

        fixHashMapHibernateBug();

        //** end workaround

        LanguageString languageString = multilanguageText.get(language);

        if (languageString != null){

            languageString.setText(text);

        }else{

            languageString = LanguageString.NewInstance(text, language);

        }

        this.multilanguageText.put(language , languageString);

        return languageString;

    }

    /**

     * Adds a translated {@link LanguageString text in a particular language}

     * to the multi-language text representing the content of <i>this</i> text data.

     * The given language string will be returned.

     *

     * @param languageString	the language string representing the content of

     * 							the text data in a particular language

     * @see    	   				#getMultilanguageText()

     * @see    	   				#putText(String, Language)

     * @see						HashMap#put(Object, Object)

     * @return					the previous language string associated with key, or null if there was no mapping for key

     */

    public LanguageString putText(LanguageString languageString) {

        if (languageString == null){

            return null;

        }else{

            Language language = languageString.getLanguage();

            return this.multilanguageText.put(language, languageString);

        }

    }

    /**

     * Removes from the multilanguage representing the content of

     * <i>this</i> text data the one {@link LanguageString language string}

     * with the given {@link Language language}. Returns the removed

     * language string.

     *

     * @param  language	the language in which the language string to be removed

     * 					has been formulated

     * @return			the language string associated with the given language or null if there was no mapping for the given Language

     * @see     		#getMultilanguageText()

     */

    public LanguageString removeText(Language language) {

        fixHashMapHibernateBug();

        return this.multilanguageText.remove(language);

    }

    /**

     * Returns the number of {@link Language languages} in which the content

     * of <i>this</i> text data has been formulated.

     *

     * @see	#getMultilanguageText()

     */

    public int countLanguages(){

        return multilanguageText.size();

    }

    /**

     * Returns the {@link TextFormat format} used for structuring the text representing

     * the content of <i>this</i> text data.

     *

     * @see	#getMultilanguageText()

     */

    public TextFormat getFormat() {

        return format;

    }

    /**

     * @see	#getFormat()

     */

    public void setFormat(TextFormat format) {

        this.format = format;

    }

    /**

     * @see {@link java.util.Map#containsKey(Object)}

     * @param language

     * @return

     */

    public boolean containsKey(Language language){

        return getMultilanguageText().containsKey(language);

    }

    /**

     * @see {@link java.util.Map#containsValue(Object)}

     * @param languageString

     * @return

     */

    public boolean containsValue(LanguageString languageString){

        return getMultilanguageText().containsValue(languageString);

    }

    /**

     * Returns the number of languages available for this text data.

     * @see {@link java.util.Map#size()}

     * @return

     */

    public int size(){

        return this.multilanguageText.size();

    }

//*********************************** CLONE *****************************************/

    /**

     * {@inheritDoc}

     */

    @Override

    public String toString() {

        Map<Language, LanguageString> multiLangText = getMultilanguageText();

        if (multiLangText.isEmpty()){

            return super.toString();

        }else{

            String result = null;

            for(LanguageString ls : multiLangText.values()){

                result = CdmUtils.concat(";", result, ls.toString());

            }

            return "[" + result + "]";

        }

    }

    /**

     * Clones <i>this</i> text data. This is a shortcut that enables to create

     * a new instance that differs only slightly from <i>this</i> text data by

     * modifying only some of the attributes.

     *

     * @see eu.etaxonomy.cdm.model.description.DescriptionElementBase#clone()

     * @see java.lang.Object#clone()

     */

    @Override

    public Object clone() {

        try {

            TextData result = (TextData)super.clone();

            //description

            result.multilanguageText = new HashMap<Language, LanguageString>();

            for (Language language : getMultilanguageText().keySet()){

                //TODO clone needed? See also IndividualsAssociation

                LanguageString newLanguageString = (LanguageString)getMultilanguageText().get(language).clone();

                result.multilanguageText.put(language, newLanguageString);

            }

            return result;

            //no changes to: format

        } catch (CloneNotSupportedException e) {

            logger.warn("Object does not implement cloneable");

            e.printStackTrace();

            return null;

        }

    }

}