Java tutorial
/** * Licensed to Apereo under one or more contributor license * agreements. See the NOTICE file distributed with this work * for additional information regarding copyright ownership. * Apereo licenses this file to you under the Apache License, * Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a * copy of the License at the following location: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package org.jasig.portlet.blackboardvcportlet.dao.impl; import java.util.HashSet; import java.util.Set; import javax.persistence.Cacheable; import javax.persistence.CascadeType; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.EnumType; import javax.persistence.Enumerated; import javax.persistence.FetchType; import javax.persistence.GeneratedValue; import javax.persistence.Id; import javax.persistence.JoinColumn; import javax.persistence.JoinTable; import javax.persistence.ManyToMany; import javax.persistence.ManyToOne; import javax.persistence.OneToMany; import javax.persistence.OneToOne; import javax.persistence.PrePersist; import javax.persistence.PreUpdate; import javax.persistence.SequenceGenerator; import javax.persistence.Table; import javax.persistence.TableGenerator; import javax.persistence.Version; import org.apache.commons.lang.Validate; import org.hibernate.annotations.Cache; import org.hibernate.annotations.CacheConcurrencyStrategy; import org.hibernate.annotations.NaturalId; import org.hibernate.annotations.NaturalIdCache; import org.hibernate.annotations.Type; import org.jasig.portlet.blackboardvcportlet.data.AccessType; import org.jasig.portlet.blackboardvcportlet.data.Presentation; import org.jasig.portlet.blackboardvcportlet.data.RecordingMode; import org.jasig.portlet.blackboardvcportlet.data.Session; import org.jasig.portlet.blackboardvcportlet.data.UserSessionUrl; import org.joda.time.DateTime; import org.joda.time.Duration; import org.joda.time.Period; import org.joda.time.PeriodType; import org.joda.time.format.PeriodFormatter; import org.joda.time.format.PeriodFormatterBuilder; @Entity @Table(name = "VC2_SESSION") @SequenceGenerator(name = "VC2_SESSION_GEN", sequenceName = "VC2_SESSION_SEQ", allocationSize = 10) @TableGenerator(name = "VC2_SESSION_GEN", pkColumnValue = "VC2_SESSION", allocationSize = 10) @NaturalIdCache @Cacheable @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE) public class SessionImpl implements Session { private static final long serialVersionUID = 1L; @Id @GeneratedValue(generator = "VC2_SESSION_GEN") @Column(name = "SESSION_ID", nullable = false) private final long sessionId; @Version @Column(name = "ENTITY_VERSION", nullable = false) private final long entityVersion; @NaturalId @Column(name = "BB_SESSION_ID", nullable = false) private final long bbSessionId; @ManyToOne(targetEntity = ConferenceUserImpl.class, optional = false) @JoinColumn(name = "CREATOR", nullable = false) private final ConferenceUserImpl creator; @ManyToOne(targetEntity = PresentationImpl.class) @JoinColumn(name = "PRESENTATION", nullable = true) private PresentationImpl presentation; @Column(name = "SESSION_NAME", nullable = false, length = 1000) private String sessionName; @Column(name = "START_TIME", nullable = false) @Type(type = "dateTime") private DateTime startTime; @Column(name = "END_TIME", nullable = false) @Type(type = "dateTime") private DateTime endTime; @Column(name = "BOUNDARY_TIME", nullable = false) private int boundaryTime; @Column(name = "ACCESS_TYPE", nullable = false) @Enumerated(EnumType.STRING) private AccessType accessType; @Column(name = "RECORDINGS", nullable = false) private boolean recordings; @Column(name = "CHAIR_NOTES", length = 4000) private String chairNotes; @Column(name = "NON_CHAIR_NOTES", length = 4000) private String nonChairNotes; private String launchUrl; @ManyToMany(targetEntity = ConferenceUserImpl.class, fetch = FetchType.LAZY) @JoinTable(name = "VC2_SESSION_CHAIRS", joinColumns = @JoinColumn(name = "SESSION_ID"), inverseJoinColumns = @JoinColumn(name = "USER_ID")) @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE) private final Set<ConferenceUserImpl> chairs = new HashSet<ConferenceUserImpl>(0); @ManyToMany(targetEntity = ConferenceUserImpl.class, fetch = FetchType.LAZY) @JoinTable(name = "VC2_SESSION_NONCHAIRS", joinColumns = @JoinColumn(name = "SESSION_ID"), inverseJoinColumns = @JoinColumn(name = "USER_ID")) @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE) private final Set<ConferenceUserImpl> nonChairs = new HashSet<ConferenceUserImpl>(0); @ManyToMany(targetEntity = MultimediaImpl.class, fetch = FetchType.LAZY) @JoinTable(name = "VC2_SESSION_MULTIMEDIA", joinColumns = @JoinColumn(name = "SESSION_ID"), inverseJoinColumns = @JoinColumn(name = "MULTIMEDIA_ID")) @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE) private final Set<MultimediaImpl> multimedias = new HashSet<MultimediaImpl>(0); @Column(name = "OPEN_CHAIR", nullable = false) private boolean openChair; @Column(name = "MUST_BE_SUPERVISED", nullable = false) private boolean mustBeSupervised; @Column(name = "RECORDING_MODE", nullable = false) @Enumerated(EnumType.STRING) private RecordingMode recordingMode; @Column(name = "MAX_TALKERS", nullable = false) private int maxTalkers; @Column(name = "MAX_CAMERAS", nullable = false) private int maxCameras; @Column(name = "RAISE_HAND_ON_ENTER", nullable = false) private boolean raiseHandOnEnter; @Column(name = "RESERVE_SEATS", nullable = false) private int reserveSeats; @Column(name = "VERSION_ID", nullable = false) private long versionId; @Column(name = "ALLOW_IN_SESSION_INVITES", nullable = false) private boolean allowInSessionInvites = true; @Column(name = "HIDE_PARTICIPANT_NAMES", nullable = false) private boolean hideParticipantNames = true; @Column(name = "PERMISSIONS_ON", nullable = false) private boolean permissionsOn = false; @Column(name = "SECURE_SIGN_ON", nullable = false) private boolean secureSignOn = false; @Column(name = "GUEST_URL", nullable = false, length = 4000) private String guestUrl; @Column(name = "LAST_UPDATED", nullable = false) @Type(type = "dateTime") private DateTime lastUpdated; @OneToMany(mappedBy = "session", targetEntity = SessionRecordingImpl.class, cascade = { CascadeType.ALL }, fetch = FetchType.LAZY, orphanRemoval = true) @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE) private final Set<SessionRecordingImpl> sessionRecordings = new HashSet<SessionRecordingImpl>(0); //Really a onetoone but blackboard treats it like a one to many @OneToMany(mappedBy = "session", targetEntity = SessionTelephonyImpl.class, cascade = { CascadeType.ALL }, fetch = FetchType.LAZY, orphanRemoval = true) @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE) private final Set<SessionTelephonyImpl> sessionTelephony = new HashSet<SessionTelephonyImpl>(0); //Exists only to allow cascading deletes, should NEVER be accessed by normal code @OneToMany(mappedBy = "session", targetEntity = UserSessionUrlImpl.class, cascade = { CascadeType.ALL }, fetch = FetchType.LAZY, orphanRemoval = true) private final Set<UserSessionUrl> userUrls = new HashSet<UserSessionUrl>(0); /** * needed by hibernate */ @SuppressWarnings("unused") private SessionImpl() { this.sessionId = -1; this.entityVersion = -1; this.bbSessionId = -1; this.creator = null; } SessionImpl(long bbSessionId, ConferenceUserImpl creator) { Validate.notNull(creator, "creator cannot be null"); this.sessionId = -1; this.entityVersion = -1; this.bbSessionId = bbSessionId; this.creator = creator; } /** * Used to keep lastUpdated up to date */ @PreUpdate @PrePersist protected final void onUpdate() { lastUpdated = DateTime.now(); } @Override public boolean isPermissionsOn() { return this.permissionsOn; } public void setPermissionsOn(boolean permissionsOn) { this.permissionsOn = permissionsOn; } @Override public boolean isSecureSignOn() { return this.secureSignOn; } public void setSecureSignOn(boolean secureSignOn) { this.secureSignOn = secureSignOn; } @Override public String getSessionName() { return sessionName; } public void setSessionName(String sessionName) { this.sessionName = sessionName; } @Override public DateTime getStartTime() { return startTime; } public DateTime getStartTimeWithBoundaryTime() { return startTime.minusMinutes(boundaryTime); } public void setStartTime(DateTime startTime) { this.startTime = startTime; } public DateTime getEndTime() { return endTime; } public void setEndTime(DateTime endTime) { this.endTime = endTime; } @Override public int getBoundaryTime() { return boundaryTime; } public void setBoundaryTime(int boundaryTime) { this.boundaryTime = boundaryTime; } @Override public AccessType getAccessType() { return accessType; } public void setAccessType(AccessType accessType) { this.accessType = accessType; } @Override public boolean isRecordings() { return recordings; } public void setRecordings(boolean recordings) { this.recordings = recordings; } @Override public String getChairNotes() { return chairNotes; } public void setChairNotes(String chairNotes) { this.chairNotes = chairNotes; } @Override public String getNonChairNotes() { return nonChairNotes; } public void setNonChairNotes(String nonChairNotes) { this.nonChairNotes = nonChairNotes; } Set<ConferenceUserImpl> getChairs() { return chairs; } Set<ConferenceUserImpl> getNonChairs() { return nonChairs; } Set<MultimediaImpl> getMultimedias() { return multimedias; } Set<SessionRecordingImpl> getSessionRecordings() { return sessionRecordings; } Set<SessionTelephonyImpl> getSessionTelephony() { return sessionTelephony; } @Override public DateTime getLastUpdated() { return lastUpdated; } @Override public boolean isOpenChair() { return openChair; } public void setOpenChair(boolean openChair) { this.openChair = openChair; } @Override public boolean isMustBeSupervised() { return mustBeSupervised; } public void setMustBeSupervised(boolean mustBeSupervised) { this.mustBeSupervised = mustBeSupervised; } @Override public RecordingMode getRecordingMode() { return recordingMode; } public void setRecordingMode(RecordingMode recordingMode) { this.recordingMode = recordingMode; } @Override public int getMaxTalkers() { return maxTalkers; } public void setMaxTalkers(int maxTalkers) { this.maxTalkers = maxTalkers; } public int getMaxCameras() { return maxCameras; } public void setMaxCameras(int maxCameras) { this.maxCameras = maxCameras; } @Override public boolean isRaiseHandOnEnter() { return raiseHandOnEnter; } public void setRaiseHandOnEnter(boolean raiseHandOnEnter) { this.raiseHandOnEnter = raiseHandOnEnter; } @Override public int getReserveSeats() { return reserveSeats; } public void setReserveSeats(int reserveSeats) { this.reserveSeats = reserveSeats; } @Override public long getVersionId() { return versionId; } public void setVersionId(long versionId) { this.versionId = versionId; } @Override public boolean isAllowInSessionInvites() { return allowInSessionInvites; } public void setAllowInSessionInvites(boolean allowInSessionInvites) { this.allowInSessionInvites = allowInSessionInvites; } @Override public boolean isHideParticipantNames() { return hideParticipantNames; } public void setHideParticipantNames(boolean hideParticipantNames) { this.hideParticipantNames = hideParticipantNames; } @Override public String getGuestUrl() { return guestUrl; } public void setGuestUrl(String guestUrl) { this.guestUrl = guestUrl; } @Override public long getSessionId() { return sessionId; } @Override public long getEntityVersion() { return entityVersion; } @Override public long getBbSessionId() { return bbSessionId; } @Override public ConferenceUserImpl getCreator() { return creator; } @Override public Presentation getPresentation() { return presentation; } void setPresentation(PresentationImpl value) { this.presentation = value; } @Override public void setLaunchUrl(String launchUrl) { this.launchUrl = launchUrl; } @Override public String getLaunchUrl() { return launchUrl; } @Override public String getTimeFancyText(DateTime from, DateTime to) { final String prefix = "Join in "; if (to != null) { Duration d = new Duration(to, from); Period timeUntil = new Period(to.toInstant(), from.toInstant(), PeriodType.dayTime()); long standardDays = d.getStandardDays(); if (standardDays > 0) { PeriodFormatter daysHours = new PeriodFormatterBuilder().appendDays().appendSuffix(" day", " days") .appendSeparator(", and ").appendHours().appendSuffix(" hour", " hours").toFormatter(); return prefix + daysHours.print(timeUntil.normalizedStandard(PeriodType.dayTime())); } else { PeriodFormatter dafaultFormatter = new PeriodFormatterBuilder().appendHours() .appendSuffix(" hour", " hours").appendSeparator(", and ").appendMinutes() .appendSuffix(" minute", " minutes").toFormatter(); return prefix + dafaultFormatter.print(timeUntil.normalizedStandard(PeriodType.dayTime())); } } else { return null; } } @Override public String getTimeUntilJoin() { return getTimeFancyText(startTime, DateTime.now()); } @Override public String toString() { return "BlackboardSessionImpl [sessionId=" + sessionId + ", sessionName=" + sessionName + ", startTime=" + startTime + ", endTime=" + endTime + "]"; } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + (int) (bbSessionId ^ (bbSessionId >>> 32)); return result; } @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; SessionImpl other = (SessionImpl) obj; if (bbSessionId != other.bbSessionId) return false; return true; } }