Application: gvSIG desktop » Library: org.gvsig.tools

package org.gvsig.tools.namestranslator;

import java.util.Arrays;

import java.util.List;

import java.util.function.Function;

import org.apache.commons.lang3.StringUtils;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynStruct;

import org.gvsig.tools.persistence.PersistenceManager;

import org.gvsig.tools.persistence.Persistent;

import org.gvsig.tools.persistence.PersistentState;

import org.gvsig.tools.persistence.exception.PersistenceException;

/**

 *

 * @author omartinez

 */

public class BaseNamesTranslator extends AbstractNamesTranslator implements NamesTranslator, Persistent {

    protected SimpleMap source2translation;

    protected SimpleMap translation2source;

    protected boolean hasTranslations;

    public static final String DEFAULT_FIELD_NAME = "field";

    protected SimpleList translatedNames;

    protected BaseNamesTranslator() {

    }

    @Override

    public NamesTranslator clone() throws CloneNotSupportedException {

        BaseNamesTranslator clone = (BaseNamesTranslator) super.clone();

        clone.translatedNames = this.translatedNames.clone();

        return clone;

    }

    @Override

    protected void build() {

        this.translatedNames = new SimpleList();

        if (!sourceNames.hasUniqueValues()) {

            throw new IllegalArgumentException("Source names contains duplicates.");

        }

        this.hasTranslations = false;

        for (String sourceName : this.sourceNames) {

            String translatedName = this.getSuggestion(sourceName);

            this.translatedNames.add(translatedName);

            if (!sourceName.equals(translatedName)) {

                this.hasTranslations = true;

            }

        }

        this.source2translation = null;

        this.translation2source = null;

    }

    @Override

    public List<String> getTranslatedNames() {

        return this.translatedNames.toList();

    }

    @Override

    public String getTranslation(String sourceName) {

        if (this.hasTranslations) {

            if (this.source2translation == null) {

                this.source2translation = new SimpleMap();

                for (int i = 0; i < this.sourceNames.size(); i++) {

                    this.source2translation.put(this.sourceNames.get(i), this.translatedNames.get(i));

                }

            }

            return this.source2translation.get(sourceName);

        }

        return sourceName;

    }

    @Override

    public String getSource(String translatedName) {

        if (this.hasTranslations) {

            if (this.translation2source == null) {

                this.translation2source = new SimpleMap();

                for (int i = 0; i < this.sourceNames.size(); i++) {

                    this.translation2source.put(this.translatedNames.get(i), this.sourceNames.get(i));

                }

            }

            return this.translation2source.get(translatedName);

        }

        return translatedName;

    }

    @Override

    public String getTranslation(int index) {

        return this.translatedNames.get(index);

    }

    @Override

    public int addSource(String sourceName) {

        if (this.sourceNames.contains(sourceName)) {

            throw new IllegalArgumentException("Source name already exists in the name translator");

        }

        String sugName = getSuggestion(sourceName);

        return this.setTranslation(sourceName, sugName);

    }

    @Override

    public int setTranslation(String sourceName, String translatedName) {

        if (StringUtils.isBlank(sourceName)) {

            throw new IllegalArgumentException("Source name not valid (null or empty string).");

        }

        if (StringUtils.isBlank(translatedName)) {

            throw new IllegalArgumentException("Translated name not valid (null or empty string).");

        }

        int translationToSet = this.sourceNames.indexOf(sourceName);

        if (translationToSet < 0) {

            throw new IllegalArgumentException("Don't exist name '" + sourceName + "'.");

        }

        int translationToFix = -1;

        for (int i = 0; i < translatedNames.size(); i++) {

            if (i == translationToSet) {

                continue;

            }

            if (StringUtils.equalsIgnoreCase(translatedName, (this.translatedNames.get(i)))) {

                translationToFix = i;

                break;

            }

        }

        this.translatedNames.set(translationToSet, translatedName);

        if (!this.hasTranslations) {

            this.hasTranslations = !StringUtils.equalsIgnoreCase(this.translatedNames.get(translationToSet), this.sourceNames.get(translationToSet));

        }

        if (translationToFix >= 0) {

            this.translatedNames.set(translationToFix, this.getSuggestion(this.sourceNames.get(translationToFix)));

            if (!this.hasTranslations) {

                this.hasTranslations = StringUtils.equalsIgnoreCase(this.translatedNames.get(translationToFix), this.sourceNames.get(translationToFix));

            }

        }

        this.source2translation = null;

        this.translation2source = null;

        return translationToFix;

    }

    @Override

    public String getSuggestion(String name) {

        String sourceName = name;

        if (StringUtils.isBlank(sourceName)) {

            sourceName = DEFAULT_FIELD_NAME;

        }

        if (!this.translatedNames.contains(sourceName)) {

            return sourceName;

        }

        String translatedName;

        for (int i = 0; i < 255; i++) {

            translatedName = sourceName + i;

            if (!this.translatedNames.contains(translatedName)) {

                return translatedName;

            }

        }

                    // Should not get here

        return sourceName + "_" + (System.currentTimeMillis() % 1000000);

    }

    @Override

    public boolean isValid(String name) {

        String sourceName = name;

        if (StringUtils.isBlank(sourceName)) {

            sourceName = DEFAULT_FIELD_NAME;

        }

        return !this.translatedNames.contains(sourceName);

    }

    public static void registerPersistence() {

        PersistenceManager manager = ToolsLocator.getPersistenceManager();

        if (manager.getDefinition("BaseNamesTranslator") == null) {

            DynStruct definition = manager.addDefinition(BaseNamesTranslator.class,

                    "BaseNamesTranslator", "BaseNamesTranslator persistence definition", null, null);

            definition.addDynFieldBoolean("hasTranslations");

            definition.addDynFieldList("translatedNames");

            definition.extend(manager.getDefinition("AbstractNamesTranslator"));

        }

    }

    @Override

    public void saveToState(PersistentState state) throws PersistenceException {

        super.saveToState(state);

        state.set("hasTranslations", this.hasTranslations);

        state.set("translatedNames", this.translatedNames.toList());

    }

    @Override

    public void loadFromState(PersistentState state) throws PersistenceException {

        super.loadFromState(state);

        this.hasTranslations = state.getBoolean("hasTranslations");

        List translatedNamesState = state.getList("translatedNames");

        SimpleList translatedNamesList = new SimpleList();

        for (Object object : translatedNamesState) {

            translatedNamesList.add((String) object);

        }

        this.translatedNames = translatedNamesList;

    }

    @Override

    public void rebuild() {

        this.build();

    }

    @Override

    public void updateSourceNames(String[] names) {

        List<String> asList = Arrays.asList(names);

        this.updateSourceNames(asList);

    }

    @Override

    public void updateSourceNames(Iterable<String> names) {

        SimpleList updateSources = new SimpleList();

        for (String name : names) {

            updateSources.add(name);

        }

        if(this.sourceNames==null) {

            this.sourceNames = updateSources;

            this.rebuild();

            return;

        }

        if(this.sourceNames.isEmpty()) {

            this.sourceNames = updateSources;

            this.rebuild();

            return;

        }

        SimpleList oldSources;

        SimpleList oldTranslated;

        try {

            oldSources = this.sourceNames.clone();

            oldTranslated = this.translatedNames.clone();

        } catch (CloneNotSupportedException ex) {

            throw new RuntimeException("Can't update names into the translator", ex);

        }

        this.sourceNames = updateSources;

        this.rebuild();

        for (int i = 0; i < oldSources.size(); i++) {

            String oldSource = oldSources.get(i);

            if(this.sourceNames.contains(oldSource)) {

                this.setTranslation(oldSource, oldTranslated.get(i));

            }

        }

        for (int i = 0; i < this.sourceNames.size(); i++) {

            String source = this.sourceNames.get(i);

            String target = this.translatedNames.get(i);

            if (!StringUtils.equalsIgnoreCase(source, target)) {

                this.hasTranslations = true;

                break;

            }

        }

        this.translation2source = null;

        this.source2translation = null;

    }

    @Override

    public void updateSourceNames(Iterable objs, Function<Object, String> name_getter) {

        SimpleList toUpdate = new SimpleList();

        for (Object obj : objs) {

            String name = name_getter.apply(obj);

            toUpdate.add(name);

        }

        this.updateSourceNames(toUpdate.toList());

    }

}