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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.model.common;
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import java.beans.PropertyChangeEvent;
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import java.beans.PropertyChangeListener;
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import java.beans.PropertyChangeSupport;
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import java.io.Serializable;
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import java.lang.reflect.Method;
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import java.util.UUID;
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import javax.persistence.Basic;
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import javax.persistence.Column;
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import javax.persistence.FetchType;
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import javax.persistence.GeneratedValue;
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import javax.persistence.Id;
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import javax.persistence.ManyToOne;
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import javax.persistence.MappedSuperclass;
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import javax.persistence.Transient;
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import javax.validation.constraints.Min;
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import javax.validation.constraints.NotNull;
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import javax.xml.bind.annotation.XmlAccessType;
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import javax.xml.bind.annotation.XmlAccessorType;
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import javax.xml.bind.annotation.XmlAttribute;
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import javax.xml.bind.annotation.XmlElement;
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import javax.xml.bind.annotation.XmlID;
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import javax.xml.bind.annotation.XmlIDREF;
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import javax.xml.bind.annotation.XmlSchemaType;
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import javax.xml.bind.annotation.XmlTransient;
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import javax.xml.bind.annotation.XmlType;
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import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
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import org.apache.log4j.Logger;
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import org.hibernate.annotations.NaturalId;
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import org.hibernate.annotations.Type;
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import org.hibernate.search.annotations.DocumentId;
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import org.hibernate.search.annotations.Field;
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import org.hibernate.search.annotations.FieldBridge;
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import org.joda.time.DateTime;
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import eu.etaxonomy.cdm.hibernate.DateTimeBridge;
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import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;
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import eu.etaxonomy.cdm.jaxb.DateTimeAdapter;
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import eu.etaxonomy.cdm.jaxb.UUIDAdapter;
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import eu.etaxonomy.cdm.strategy.match.Match;
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import eu.etaxonomy.cdm.strategy.match.MatchMode;
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/**
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* The base class for all CDM domain classes implementing UUIDs and bean property change event firing.
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* It provides a globally unique UUID and keeps track of creation date and person.
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* The UUID is the same for different versions (see {@link VersionableEntity}) of a CDM object, so a locally unique id exists in addition
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* that allows to safely access and store several objects (=version) with the same UUID.
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*
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* This class together with the {@link eu.etaxonomy.cdm.aspectj.PropertyChangeAspect}
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* will fire bean change events to all registered listeners. Listener registration and event firing
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* is done with the help of the {@link PropertyChangeSupport} class.
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*
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* @author m.doering
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*
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*/
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@XmlAccessorType(XmlAccessType.FIELD)
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@XmlType(name = "CdmBase", propOrder = {
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"created",
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"createdBy"
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})
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@MappedSuperclass
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public abstract class CdmBase implements Serializable, ICdmBase, Cloneable{
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private static final long serialVersionUID = -3053225700018294809L;
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@SuppressWarnings("unused")
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private static final Logger logger = Logger.getLogger(CdmBase.class);
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@Transient
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@XmlTransient
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private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(this);
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//@XmlAttribute(name = "id", required = true)
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@XmlTransient
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@Id
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// @GeneratedValue(generator = "system-increment")
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@GeneratedValue(generator = "enhanced-table")
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@DocumentId
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@Match(MatchMode.IGNORE)
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@NotNull
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@Min(0)
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private int id;
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@XmlAttribute(required = true)
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@XmlJavaTypeAdapter(UUIDAdapter.class)
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@Type(type="uuidUserType")
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@NaturalId // This has the effect of placing a "unique" constraint on the database column
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@XmlID
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@Column(length=36)
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@Match(MatchMode.IGNORE)
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@NotNull
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protected UUID uuid;
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@XmlElement (name = "Created", type= String.class)
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@XmlJavaTypeAdapter(DateTimeAdapter.class)
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@Type(type="dateTimeUserType")
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@Basic(fetch = FetchType.LAZY)
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@Match(MatchMode.IGNORE)
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@Field(index = org.hibernate.search.annotations.Index.UN_TOKENIZED)
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@FieldBridge(impl = DateTimeBridge.class)
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private DateTime created;
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@XmlElement (name = "CreatedBy")
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@XmlIDREF
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@XmlSchemaType(name = "IDREF")
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@ManyToOne(fetch=FetchType.LAZY)
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@Match(MatchMode.IGNORE)
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private User createdBy;
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/**
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* Class constructor assigning a unique UUID and creation date.
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* UUID can be changed later via setUuid method.
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*/
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public CdmBase() {
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this.uuid = UUID.randomUUID();
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this.created = new DateTime().withMillisOfSecond(0);
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}
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/**
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* see {@link PropertyChangeSupport#addPropertyChangeListener(PropertyChangeListener)}
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* @param listener
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*/
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public void addPropertyChangeListener(PropertyChangeListener listener) {
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propertyChangeSupport.addPropertyChangeListener(listener);
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}
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/**
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* see {@link PropertyChangeSupport#addPropertyChangeListener(String, PropertyChangeListener)}
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*/
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public void addPropertyChangeListener(String propertyName, PropertyChangeListener listener) {
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propertyChangeSupport.addPropertyChangeListener(propertyName, listener);
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}
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/**
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* see {@link PropertyChangeSupport#addPropertyChangeListener(PropertyChangeListener)}
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*/
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public void removePropertyChangeListener(PropertyChangeListener listener) {
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propertyChangeSupport.removePropertyChangeListener(listener);
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}
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/**
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* @see PropertyChangeSupport#addPropertyChangeListener(String, PropertyChangeListener)
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*/
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public void removePropertyChangeListener(String propertyName, PropertyChangeListener listener) {
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propertyChangeSupport.removePropertyChangeListener(propertyName, listener);
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}
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public boolean hasListeners(String propertyName) {
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return propertyChangeSupport.hasListeners(propertyName);
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}
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public void firePropertyChange(String property, String oldval, String newval) {
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propertyChangeSupport.firePropertyChange(property, oldval, newval);
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}
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public void firePropertyChange(String property, int oldval, int newval) {
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propertyChangeSupport.firePropertyChange(property, oldval, newval);
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}
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public void firePropertyChange(String property, float oldval, float newval) {
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propertyChangeSupport.firePropertyChange(property, oldval, newval);
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}
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public void firePropertyChange(String property, boolean oldval, boolean newval) {
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propertyChangeSupport.firePropertyChange(property, oldval, newval);
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}
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public void firePropertyChange(String property, Object oldval, Object newval) {
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propertyChangeSupport.firePropertyChange(property, oldval, newval);
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}
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public void firePropertyChange(PropertyChangeEvent evt) {
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propertyChangeSupport.firePropertyChange(evt);
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}
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/* (non-Javadoc)
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* @see eu.etaxonomy.cdm.model.common.ICdmBase#getUuid()
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*/
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public UUID getUuid() {
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return uuid;
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}
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/* (non-Javadoc)
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* @see eu.etaxonomy.cdm.model.common.ICdmBase#setUuid(java.util.UUID)
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*/
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public void setUuid(UUID uuid) {
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this.uuid = uuid;
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}
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/* (non-Javadoc)
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* @see eu.etaxonomy.cdm.model.common.ICdmBase#getId()
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*/
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public int getId() {
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return this.id;
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}
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/* (non-Javadoc)
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* @see eu.etaxonomy.cdm.model.common.ICdmBase#setId(int)
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*/
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public void setId(int id) {
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this.id = id;
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}
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/* (non-Javadoc)
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* @see eu.etaxonomy.cdm.model.common.ICdmBase#getCreated()
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*/
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public DateTime getCreated() {
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return created;
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}
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/* (non-Javadoc)
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* @see eu.etaxonomy.cdm.model.common.ICdmBase#setCreated(java.util.Calendar)
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*/
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public void setCreated(DateTime created) {
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if (created != null){
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new DateTime();
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created = created.withMillisOfSecond(0);
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//created.set(Calendar.MILLISECOND, 0); //old, can be deleted
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}
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this.created = created;
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}
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/* (non-Javadoc)
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* @see eu.etaxonomy.cdm.model.common.ICdmBase#getCreatedBy()
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*/
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public User getCreatedBy() {
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return this.createdBy;
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}
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/* (non-Javadoc)
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* @see eu.etaxonomy.cdm.model.common.ICdmBase#setCreatedBy(eu.etaxonomy.cdm.model.agent.Person)
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*/
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public void setCreatedBy(User createdBy) {
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this.createdBy = createdBy;
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}
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// ************************** Hibernate proxies *******************/
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/**
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* These methods are present due to HHH-1517 - that in a one-to-many
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* relationship with a superclass at the "one" end, the proxy created
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* by hibernate is the superclass, and not the subclass, resulting in
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* a classcastexception when you try to cast it.
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*
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* Hopefully this will be resolved through improvements with the creation of
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* proxy objects by hibernate and the following methods will become redundant,
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* but for the time being . . .
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* @param <T>
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* @param object
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* @param clazz
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* @return
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* @throws ClassCastException
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*/
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//non-static does not work because javassist already unwrapps the proxy before calling the method
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public static <T extends CdmBase> T deproxy(Object object, Class<T> clazz) throws ClassCastException {
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return HibernateProxyHelper.deproxy(object, clazz);
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}
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public boolean isInstanceOf(Class<? extends CdmBase> clazz) throws ClassCastException {
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return HibernateProxyHelper.isInstanceOf(this, clazz);
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}
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// ************* Object overrides *************************/
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/**
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* Is true if UUID is the same for the passed Object and this one.
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* @see java.lang.Object#equals(java.lang.Object)
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* See {@link http://www.hibernate.org/109.html hibernate109}, {@link http://www.geocities.com/technofundo/tech/java/equalhash.html geocities}
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* or {@link http://www.ibm.com/developerworks/java/library/j-jtp05273.html ibm}
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* for more information about equals and hashcode.
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*/
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@Override
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public boolean equals(Object obj) {
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if (obj == this){
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return true;
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}
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if (obj == null){
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return false;
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}
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if (!CdmBase.class.isAssignableFrom(obj.getClass())){
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return false;
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}
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ICdmBase cdmObj = (ICdmBase)obj;
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boolean uuidEqual = cdmObj.getUuid().equals(this.getUuid());
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boolean createdEqual = cdmObj.getCreated().equals(this.getCreated());
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if (! uuidEqual || !createdEqual){
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return false;
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}
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return true;
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}
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/** Overrides {@link java.lang.Object#hashCode()}
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* See {@link http://www.hibernate.org/109.html hibernate109}, {@link http://www.geocities.com/technofundo/tech/java/equalhash.html geocities}
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* or {@link http://www.ibm.com/developerworks/java/library/j-jtp05273.html ibm}
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* for more information about equals and hashcode.
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*/
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@Override
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public int hashCode() {
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int hashCode = 7;
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if(this.getUuid() != null) {
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//this unfortunately leads to errors when loading maps via hibernate
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//as hibernate computes hash values for CdmBase objects used as key at
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// a time when the uuid is not yet loaded from the database. Therefore
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//the hash values later change and give wrong results when retrieving
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//data from the map (map.get(key) returns null, though there is an entry
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//for key in the map.
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//see further comments in #2114
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int result = 29 * hashCode + this.getUuid().hashCode();
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// int shresult = 29 * hashCode + Integer.valueOf(this.getId()).hashCode();
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return result;
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} else {
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return 29 * hashCode;
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}
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}
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/**
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* Overrides {@link java.lang.Object#toString()}.
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* This returns an String that identifies the object well without beeing necessarily unique.
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* Specification: This method should never call other object' methods so it can be well used for debugging
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* without problems like lazy loading, unreal states etc.
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* Note: If overriding this method's javadoc always copy or link the above requirement.
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* If not overwritten by a subclass method returns the class, id and uuid as a string for any CDM object.
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* For example: Taxon#13<b5938a98-c1de-4dda-b040-d5cc5bfb3bc0>
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* @see java.lang.Object#toString()
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*/
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@Override
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public String toString() {
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return this.getClass().getSimpleName()+"#"+this.getId()+"<"+this.getUuid()+">";
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}
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// **************** invoke methods **************************/
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protected void invokeSetMethod(Method method, Object object){
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try {
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method.invoke(object, this);
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} catch (Exception e) {
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e.printStackTrace();
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//TODO handle exceptioin;
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}
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}
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protected void invokeSetMethodWithNull(Method method, Object object){
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try {
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Object[] nul = new Object[]{null};
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method.invoke(object, nul);
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} catch (Exception e) {
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e.printStackTrace();
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//TODO handle exceptioin;
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}
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}
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//********************** CLONE *****************************************/
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protected void clone(CdmBase clone){
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clone.setCreatedBy(createdBy);
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clone.setId(id);
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clone.propertyChangeSupport=new PropertyChangeSupport(clone);
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//Constructor Attributes
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//clone.setCreated(created);
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//clone.setUuid(getUuid());
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}
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/* (non-Javadoc)
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* @see java.lang.Object#clone()
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*/
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@Override
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public Object clone() throws CloneNotSupportedException{
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CdmBase result = (CdmBase)super.clone();
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result.propertyChangeSupport=new PropertyChangeSupport(result);
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//TODO ?
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result.setId(0);
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result.setUuid(UUID.randomUUID());
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result.setCreated(new DateTime());
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result.setCreatedBy(null);
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//no changes to: -
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return result;
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}
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}
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