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/**
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* Copyright (C) 2009 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.io.dwca.in;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import org.apache.commons.lang.StringUtils;
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import org.apache.log4j.Logger;
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import eu.etaxonomy.cdm.io.common.events.IIoEvent;
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import eu.etaxonomy.cdm.io.common.events.IIoObserver;
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import eu.etaxonomy.cdm.io.common.events.IoProblemEvent;
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import eu.etaxonomy.cdm.io.dwca.TermUri;
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import eu.etaxonomy.cdm.io.stream.StreamImportBase;
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import eu.etaxonomy.cdm.io.stream.StreamImportStateBase;
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import eu.etaxonomy.cdm.io.stream.StreamItem;
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import eu.etaxonomy.cdm.model.common.CdmBase;
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import eu.etaxonomy.cdm.model.description.TaxonDescription;
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import eu.etaxonomy.cdm.model.taxon.Taxon;
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import eu.etaxonomy.cdm.model.taxon.TaxonBase;
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/**
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* @author a.mueller
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* @date 23.11.2011
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*
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* FIXME URI
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*/
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public abstract class PartitionableConverterBase<CONFIG extends DwcaDataImportConfiguratorBase, STATE extends StreamImportStateBase<CONFIG,StreamImportBase>>
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implements IPartitionableConverter<StreamItem, IReader<CdmBase>, String> {
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private static final Logger logger = Logger.getLogger(PartitionableConverterBase.class);
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protected STATE state;
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protected CONFIG config; //for convenience only (must always be same as state.getConfig())
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public PartitionableConverterBase(STATE state) {
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super();
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this.state = state;
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this.config = state.getConfig(); //for fast access
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}
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protected void fireWarningEvent(String message, StreamItem item, Integer severity) {
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fireWarningEvent(message, getDataLocation(item), severity, 1);
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}
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private String getDataLocation(StreamItem item) {
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String location = item.getLocation();
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return location;
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}
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protected void fireWarningEvent(String message, String dataLocation, Integer severity) {
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fireWarningEvent(message, dataLocation, severity, 1);
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}
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protected void fireWarningEvent(String message, String dataLocation, Integer severity, int stackDepth) {
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stackDepth++;
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StackTraceElement[] stackTrace = new Exception().getStackTrace();
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int lineNumber = stackTrace[stackDepth].getLineNumber();
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String methodName = stackTrace[stackDepth].getMethodName();
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String className = stackTrace[stackDepth].getClassName();
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Class<?> declaringClass;
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try {
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declaringClass = Class.forName(className);
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} catch (ClassNotFoundException e) {
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declaringClass = this.getClass();
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}
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IoProblemEvent event = IoProblemEvent.NewInstance(declaringClass, message, dataLocation,
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lineNumber, severity, methodName);
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//for performance improvement one may read:
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//http://stackoverflow.com/questions/421280/in-java-how-do-i-find-the-caller-of-a-method-using-stacktrace-or-reflection
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// Object o = new SecurityManager().getSecurityContext();
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fire(event);
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}
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protected void fire(IIoEvent event){
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Set<IIoObserver> observers = state.getConfig().getObservers();
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for (IIoObserver observer: observers){
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observer.handleEvent(event);
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}
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if (observers.size() == 0){
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logger.warn(event.getMessage() + " (no observer for message!).");
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}
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}
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/**
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* Returns the value for the given term in the item.
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*/
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protected String getValue(StreamItem item, TermUri term) {
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return item.get(term.getUriString());
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}
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/**
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* Checks if the given term has a value in item that is not blank (null, empty or whitespace only).
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* @param term
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* @param item
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* @return true if value is not blank
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*/
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protected boolean exists(TermUri term, StreamItem item) {
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return ! StringUtils.isBlank(getValue(item, term));
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}
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/*
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* To be implemented by subclasses if needed.
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*/
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@Override
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public ItemFilter<StreamItem> getItemFilter(){
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return null;
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}
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@Override
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public Map<String, Set<String>> getPartitionForeignKeys(IReader<StreamItem> instream) {
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Map<String, Set<String>> result = new HashMap<String, Set<String>>();
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while (instream.hasNext()){
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StreamItem next = instream.read();
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makeForeignKeysForItem(next, result);
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}
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return result;
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}
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/**
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* Fills the the foreign key map with foreign keys required for this item.
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* @param next
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* @param foreignKeyMap
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*/
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protected abstract void makeForeignKeysForItem(StreamItem next, Map<String, Set<String>> foreignKeyMap);
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/**
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* False if string is null, empty or whitespace only. True otherwise.
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* @param string String to test.
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*/
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protected boolean hasValue(String string) {
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return StringUtils.isNotBlank(string);
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}
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/**
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* Returns the key set for a given key or creates a new one.
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* @param key
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* @param fkMap
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* @return
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*/
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protected Set<String> getKeySet(String key, Map<String, Set<String>> fkMap) {
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Set<String> keySet = fkMap.get(key);
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if (keySet == null){
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keySet = new HashSet<String>();
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fkMap.put(key, keySet);
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}
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return keySet;
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}
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protected <T extends TaxonBase> T getTaxonBase(String id, StreamItem item, Class<T> clazz, STATE state) {
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if (clazz == null){
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clazz = (Class)TaxonBase.class;
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}
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List<T> taxonList = state.get(TermUri.DWC_TAXON.toString(), id, clazz);
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if (taxonList.size() > 1){
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String message = "Ambigous taxon mapping for id %s. There is more than 1 matching taxon.";
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message = String.format(message, id);
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fireWarningEvent(message, item, 8);
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logger.warn(message); //TODO remove when events are handled correctly
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return null;
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}else if (taxonList.isEmpty()){
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return null;
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}else{
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return taxonList.get(0);
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}
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}
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protected TaxonDescription getTaxonDescription(Taxon taxon, boolean isImageGallery) {
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TaxonDescription result = null;
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Set<TaxonDescription> descs = taxon.getDescriptions();
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for (TaxonDescription desc : descs){
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if (desc.isImageGallery() == isImageGallery){
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result = desc;
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break;
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}
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}
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if (result == null){
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result = TaxonDescription.NewInstance(taxon);
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result.setImageGallery(isImageGallery);
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}
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return result;
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}
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protected boolean isNotBlank(String str){
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return StringUtils.isNotBlank(str);
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}
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protected boolean isBlank(String str){
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return StringUtils.isBlank(str);
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}
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}
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