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/**
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* Copyright (C) 2007 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.hibernate;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.sql.Types;
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import org.apache.logging.log4j.LogManager;import org.apache.logging.log4j.Logger;
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import org.hibernate.HibernateException;
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import org.hibernate.engine.spi.SharedSessionContractImplementor;
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import org.hibernate.type.StandardBasicTypes;
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import org.hibernate.usertype.UserType;
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import org.jadira.usertype.spi.shared.AbstractUserType;
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import org.joda.time.DateTimeFieldType;
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import org.joda.time.Partial;
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/**
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* Persist {@link org.joda.time.Partial} via hibernate.
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* This is a preliminary implementation that fulfills the needs of CDM but does not fully store a Partial.
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* Only year, month and day is stored. Since 5.0 also hour and minute is supported.
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*
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* @author a.mueller
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* @since 11.11.2008
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*/
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public class PartialUserType extends AbstractUserType implements UserType /* extends AbstractSingleColumnUserType<Partial, String, ColumnMapper<Partial,String>> implements UserType */ {
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private static final long serialVersionUID = -5323104403077597869L;
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private static final Logger logger = LogManager.getLogger(PartialUserType.class);
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//not required
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public final static PartialUserType INSTANCE = new PartialUserType();
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private static final int[] SQL_TYPES = new int[]{
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Types.VARCHAR,
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};
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@Override
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public Partial nullSafeGet(ResultSet rs, String[] names, SharedSessionContractImplementor session, Object owner)
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throws HibernateException, SQLException {
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String partial = (String)StandardBasicTypes.STRING.nullSafeGet(rs, names, session, owner);
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Partial result = new Partial();
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if (partial == null || "00000000".equals(partial) || "0000000000000".equals(partial)) {
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return null;
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}else if (partial.length() != 8 && partial.length() != 13){
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throw new HibernateException("Format for Partial not supported. Length mus be 8 or 13: " + partial);
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}
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Integer year = Integer.valueOf(partial.substring(0,4));
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Integer month = Integer.valueOf(partial.substring(4,6));
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Integer day = Integer.valueOf(partial.substring(6,8));
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Integer hour = null;
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Integer minute = null;
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if (partial.length() == 13){
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hour = Integer.valueOf(partial.substring(9,11));
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minute = Integer.valueOf(partial.substring(11,13));
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}
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if (year != 0){
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result = result.with(DateTimeFieldType.year(), year);
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}
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if (month != 0){
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result = result.with(DateTimeFieldType.monthOfYear(), month);
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}
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if (day != 0){
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result = result.with(DateTimeFieldType.dayOfMonth(), day);
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}
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if (hour != null){
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result = result.with(DateTimeFieldType.hourOfDay(), hour);
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}
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if (minute != null){
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result = result.with(DateTimeFieldType.minuteOfHour(), minute);
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}
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return isEmptyOrNull(result)? null:result;
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}
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private boolean isEmptyOrNull(Partial partial) {
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return partial == null ? true : partial.getValues().length == 0;
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}
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@Override
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public void nullSafeSet(PreparedStatement preparedStatement, Object value, int index,
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SharedSessionContractImplementor session) throws HibernateException, SQLException {
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if (isEmptyOrNull((Partial)value)){
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StandardBasicTypes.STRING.nullSafeSet(preparedStatement, null, index, session);
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}else {
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Partial p = ((Partial) value);
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StandardBasicTypes.STRING.nullSafeSet(preparedStatement, partialToString(p), index, session);
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}
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}
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/**
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* @param p
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* @return an ISO 8601 like time representations of the form yyyyMMdd
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*/
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public static String partialToString(Partial p) {
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//FIXME reduce code by use org.joda.time.format.ISODateTimeFormat.basicDate() instead ?
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// for a date with unknown day this will produce e.g. 195712??
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//
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String strYear = getNullFilledString(p, DateTimeFieldType.year(),4);
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String strMonth = getNullFilledString(p, DateTimeFieldType.monthOfYear(),2);
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String strDay = getNullFilledString(p, DateTimeFieldType.dayOfMonth(),2);
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String strHour = getNullFilledString(p, DateTimeFieldType.hourOfDay(),2);
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String strMinute = getNullFilledString(p, DateTimeFieldType.minuteOfHour(),2);
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boolean timeExists = timeExists(p);
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String result = strYear + strMonth + strDay;
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if (timeExists) {
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result = result + "_" + strHour + strMinute;
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}
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return result;
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}
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private static boolean timeExists(Partial partial) {
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return partial.isSupported(DateTimeFieldType.hourOfDay()) ||
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partial.isSupported(DateTimeFieldType.minuteOfHour());
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}
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private static String getNullFilledString(Partial partial, DateTimeFieldType type, int count){
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String nul = "0000000000";
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if (! partial.isSupported(type)){
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return nul.substring(0, count);
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}else{
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int value = partial.get(type);
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String result = String.valueOf(value);
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if (result.length() > count){
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logger.error("value to long");
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result = result.substring(0, count);
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}else if (result.length() < count){
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result = nul.substring(0, count - result.length()) + result;
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}
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return result;
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}
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}
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@Override
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public Object deepCopy(Object value) throws HibernateException {
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if (value == null) {
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return null;
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}
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return value;
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}
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@Override
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public int[] sqlTypes() {
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return SQL_TYPES;
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}
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@Override
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public Class<?> returnedClass() {
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return Partial.class;
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}
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}
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